./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2bb4b23c61a0ce6fb5d219efb233ba1e5b1970509ba14aea9115d570a0ea376d --- 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-5e519f3 [2022-11-03 01:36:15,752 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 01:36:15,755 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 01:36:15,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 01:36:15,794 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 01:36:15,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 01:36:15,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 01:36:15,805 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 01:36:15,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 01:36:15,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 01:36:15,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 01:36:15,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 01:36:15,820 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 01:36:15,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 01:36:15,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 01:36:15,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 01:36:15,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 01:36:15,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 01:36:15,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 01:36:15,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 01:36:15,840 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 01:36:15,842 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 01:36:15,843 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 01:36:15,845 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 01:36:15,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 01:36:15,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 01:36:15,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 01:36:15,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 01:36:15,854 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 01:36:15,855 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 01:36:15,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 01:36:15,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 01:36:15,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 01:36:15,861 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 01:36:15,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 01:36:15,862 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 01:36:15,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 01:36:15,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 01:36:15,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 01:36:15,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 01:36:15,865 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 01:36:15,865 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 01:36:15,905 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 01:36:15,905 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 01:36:15,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 01:36:15,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 01:36:15,907 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 01:36:15,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 01:36:15,908 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 01:36:15,908 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 01:36:15,908 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 01:36:15,908 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 01:36:15,910 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 01:36:15,910 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 01:36:15,910 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 01:36:15,910 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 01:36:15,910 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 01:36:15,911 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 01:36:15,911 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 01:36:15,911 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 01:36:15,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 01:36:15,912 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 01:36:15,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 01:36:15,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 01:36:15,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 01:36:15,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 01:36:15,915 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 01:36:15,915 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 01:36:15,915 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 01:36:15,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 01:36:15,916 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 01:36:15,916 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 01:36:15,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 01:36:15,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 01:36:15,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:36:15,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 01:36:15,917 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 01:36:15,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 01:36:15,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 01:36:15,918 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 01:36:15,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 01:36:15,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 01:36:15,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 01:36:15,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bb4b23c61a0ce6fb5d219efb233ba1e5b1970509ba14aea9115d570a0ea376d [2022-11-03 01:36:16,224 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 01:36:16,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 01:36:16,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 01:36:16,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 01:36:16,263 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 01:36:16,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c [2022-11-03 01:36:16,354 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/data/0adabd526/86292f8e34ec411e8db70c9664bf34e0/FLAG142069c0b [2022-11-03 01:36:16,932 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 01:36:16,932 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c [2022-11-03 01:36:16,957 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/data/0adabd526/86292f8e34ec411e8db70c9664bf34e0/FLAG142069c0b [2022-11-03 01:36:17,238 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/data/0adabd526/86292f8e34ec411e8db70c9664bf34e0 [2022-11-03 01:36:17,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 01:36:17,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 01:36:17,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 01:36:17,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 01:36:17,252 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 01:36:17,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,255 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@355dec7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17, skipping insertion in model container [2022-11-03 01:36:17,255 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,263 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 01:36:17,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 01:36:17,505 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c[1605,1618] [2022-11-03 01:36:17,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:36:17,624 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 01:36:17,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/sv-benchmarks/c/product-lines/minepump_spec2_product47.cil.c[1605,1618] [2022-11-03 01:36:17,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 01:36:17,764 INFO L208 MainTranslator]: Completed translation [2022-11-03 01:36:17,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17 WrapperNode [2022-11-03 01:36:17,765 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 01:36:17,766 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 01:36:17,767 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 01:36:17,767 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 01:36:17,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,828 INFO L138 Inliner]: procedures = 56, calls = 158, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 249 [2022-11-03 01:36:17,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 01:36:17,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 01:36:17,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 01:36:17,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 01:36:17,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,856 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,856 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,867 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,871 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 01:36:17,872 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 01:36:17,872 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 01:36:17,872 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 01:36:17,873 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17" (1/1) ... [2022-11-03 01:36:17,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 01:36:17,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:36:17,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 01:36:17,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 01:36:17,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 01:36:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-03 01:36:17,986 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-03 01:36:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-03 01:36:17,986 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-03 01:36:17,986 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-03 01:36:17,987 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-03 01:36:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-03 01:36:17,987 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-03 01:36:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-03 01:36:17,987 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-03 01:36:17,987 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-11-03 01:36:17,987 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-11-03 01:36:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-03 01:36:17,988 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-03 01:36:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2022-11-03 01:36:17,988 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2022-11-03 01:36:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 01:36:17,988 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-03 01:36:17,988 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-03 01:36:17,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 01:36:17,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 01:36:18,109 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 01:36:18,112 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 01:36:18,520 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 01:36:18,686 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 01:36:18,686 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-03 01:36:18,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:36:18 BoogieIcfgContainer [2022-11-03 01:36:18,689 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 01:36:18,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 01:36:18,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 01:36:18,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 01:36:18,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:36:17" (1/3) ... [2022-11-03 01:36:18,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64384b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:36:18, skipping insertion in model container [2022-11-03 01:36:18,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:36:17" (2/3) ... [2022-11-03 01:36:18,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64384b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:36:18, skipping insertion in model container [2022-11-03 01:36:18,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:36:18" (3/3) ... [2022-11-03 01:36:18,701 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product47.cil.c [2022-11-03 01:36:18,720 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 01:36:18,721 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 01:36:18,794 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 01:36:18,814 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3d304a3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 01:36:18,814 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 01:36:18,821 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 54 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-03 01:36:18,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-03 01:36:18,832 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:18,833 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:36:18,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:18,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:18,841 INFO L85 PathProgramCache]: Analyzing trace with hash 198426105, now seen corresponding path program 1 times [2022-11-03 01:36:18,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:18,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020923177] [2022-11-03 01:36:18,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:18,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:36:19,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:36:19,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020923177] [2022-11-03 01:36:19,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020923177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:36:19,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:36:19,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 01:36:19,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590987014] [2022-11-03 01:36:19,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:36:19,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 01:36:19,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:36:19,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 01:36:19,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 01:36:19,130 INFO L87 Difference]: Start difference. First operand has 72 states, 45 states have (on average 1.4222222222222223) internal successors, (64), 54 states have internal predecessors, (64), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:36:19,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:36:19,244 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2022-11-03 01:36:19,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 01:36:19,246 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-03 01:36:19,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:36:19,257 INFO L225 Difference]: With dead ends: 142 [2022-11-03 01:36:19,257 INFO L226 Difference]: Without dead ends: 67 [2022-11-03 01:36:19,274 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 [2022-11-03 01:36:19,277 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:36:19,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 76 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:36:19,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2022-11-03 01:36:19,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2022-11-03 01:36:19,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 42 states have (on average 1.3333333333333333) internal successors, (56), 50 states have internal predecessors, (56), 16 states have call successors, (16), 9 states have call predecessors, (16), 8 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 01:36:19,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 87 transitions. [2022-11-03 01:36:19,328 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 87 transitions. Word has length 17 [2022-11-03 01:36:19,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:36:19,329 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 87 transitions. [2022-11-03 01:36:19,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:36:19,329 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 87 transitions. [2022-11-03 01:36:19,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 01:36:19,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:19,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:36:19,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 01:36:19,332 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:19,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:19,333 INFO L85 PathProgramCache]: Analyzing trace with hash -290554321, now seen corresponding path program 1 times [2022-11-03 01:36:19,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:19,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196857662] [2022-11-03 01:36:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:19,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:19,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:19,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:36:19,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:36:19,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196857662] [2022-11-03 01:36:19,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196857662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:36:19,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:36:19,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:36:19,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611715424] [2022-11-03 01:36:19,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:36:19,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:36:19,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:36:19,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:36:19,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:36:19,458 INFO L87 Difference]: Start difference. First operand 67 states and 87 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:36:19,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:36:19,515 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2022-11-03 01:36:19,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:36:19,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-03 01:36:19,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:36:19,517 INFO L225 Difference]: With dead ends: 106 [2022-11-03 01:36:19,517 INFO L226 Difference]: Without dead ends: 59 [2022-11-03 01:36:19,518 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 [2022-11-03 01:36:19,519 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 14 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:36:19,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 107 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:36:19,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-03 01:36:19,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-03 01:36:19,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 45 states have internal predecessors, (50), 13 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-03 01:36:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 76 transitions. [2022-11-03 01:36:19,529 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 76 transitions. Word has length 18 [2022-11-03 01:36:19,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:36:19,529 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 76 transitions. [2022-11-03 01:36:19,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:36:19,530 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 76 transitions. [2022-11-03 01:36:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-03 01:36:19,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:19,531 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] [2022-11-03 01:36:19,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 01:36:19,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash 101083766, now seen corresponding path program 1 times [2022-11-03 01:36:19,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:19,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591962615] [2022-11-03 01:36:19,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:19,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:36:19,653 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:36:19,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591962615] [2022-11-03 01:36:19,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591962615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:36:19,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:36:19,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:36:19,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744608833] [2022-11-03 01:36:19,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:36:19,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:36:19,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:36:19,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:36:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:36:19,655 INFO L87 Difference]: Start difference. First operand 59 states and 76 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (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) [2022-11-03 01:36:19,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:36:19,723 INFO L93 Difference]: Finished difference Result 173 states and 225 transitions. [2022-11-03 01:36:19,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:36:19,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 2 states have call successors, (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 21 [2022-11-03 01:36:19,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:36:19,725 INFO L225 Difference]: With dead ends: 173 [2022-11-03 01:36:19,725 INFO L226 Difference]: Without dead ends: 116 [2022-11-03 01:36:19,726 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 [2022-11-03 01:36:19,727 INFO L413 NwaCegarLoop]: 83 mSDtfsCounter, 63 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:36:19,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 143 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:36:19,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-03 01:36:19,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2022-11-03 01:36:19,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 70 states have (on average 1.3571428571428572) internal successors, (95), 85 states have internal predecessors, (95), 26 states have call successors, (26), 16 states have call predecessors, (26), 16 states have return successors, (26), 19 states have call predecessors, (26), 26 states have call successors, (26) [2022-11-03 01:36:19,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 147 transitions. [2022-11-03 01:36:19,766 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 147 transitions. Word has length 21 [2022-11-03 01:36:19,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:36:19,767 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 147 transitions. [2022-11-03 01:36:19,767 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-03 01:36:19,767 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 147 transitions. [2022-11-03 01:36:19,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-03 01:36:19,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:19,770 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] [2022-11-03 01:36:19,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 01:36:19,770 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:19,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:19,771 INFO L85 PathProgramCache]: Analyzing trace with hash -421871571, now seen corresponding path program 1 times [2022-11-03 01:36:19,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:19,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006663180] [2022-11-03 01:36:19,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:19,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:19,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:36:19,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:36:19,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006663180] [2022-11-03 01:36:19,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006663180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:36:19,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:36:19,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:36:19,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338168120] [2022-11-03 01:36:19,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:36:19,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:36:19,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:36:19,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:36:19,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:36:19,910 INFO L87 Difference]: Start difference. First operand 113 states and 147 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-11-03 01:36:20,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:36:20,158 INFO L93 Difference]: Finished difference Result 331 states and 434 transitions. [2022-11-03 01:36:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 01:36:20,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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 24 [2022-11-03 01:36:20,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:36:20,171 INFO L225 Difference]: With dead ends: 331 [2022-11-03 01:36:20,171 INFO L226 Difference]: Without dead ends: 220 [2022-11-03 01:36:20,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-03 01:36:20,177 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 51 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:36:20,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 322 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:36:20,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-11-03 01:36:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 212. [2022-11-03 01:36:20,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 131 states have (on average 1.3358778625954197) internal successors, (175), 158 states have internal predecessors, (175), 50 states have call successors, (50), 30 states have call predecessors, (50), 30 states have return successors, (50), 36 states have call predecessors, (50), 50 states have call successors, (50) [2022-11-03 01:36:20,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 275 transitions. [2022-11-03 01:36:20,208 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 275 transitions. Word has length 24 [2022-11-03 01:36:20,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:36:20,208 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 275 transitions. [2022-11-03 01:36:20,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 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) [2022-11-03 01:36:20,208 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 275 transitions. [2022-11-03 01:36:20,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-03 01:36:20,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:20,211 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] [2022-11-03 01:36:20,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 01:36:20,211 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:20,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:20,212 INFO L85 PathProgramCache]: Analyzing trace with hash -166311705, now seen corresponding path program 1 times [2022-11-03 01:36:20,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:20,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87887592] [2022-11-03 01:36:20,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:20,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 01:36:20,290 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:36:20,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87887592] [2022-11-03 01:36:20,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87887592] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:36:20,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:36:20,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 01:36:20,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781199049] [2022-11-03 01:36:20,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:36:20,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 01:36:20,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:36:20,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 01:36:20,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:36:20,293 INFO L87 Difference]: Start difference. First operand 212 states and 275 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:36:20,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:36:20,384 INFO L93 Difference]: Finished difference Result 323 states and 424 transitions. [2022-11-03 01:36:20,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 01:36:20,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 27 [2022-11-03 01:36:20,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:36:20,390 INFO L225 Difference]: With dead ends: 323 [2022-11-03 01:36:20,390 INFO L226 Difference]: Without dead ends: 321 [2022-11-03 01:36:20,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 01:36:20,396 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 51 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 01:36:20,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 133 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 01:36:20,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-03 01:36:20,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 321. [2022-11-03 01:36:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 198 states have (on average 1.3383838383838385) internal successors, (265), 239 states have internal predecessors, (265), 76 states have call successors, (76), 46 states have call predecessors, (76), 46 states have return successors, (80), 55 states have call predecessors, (80), 76 states have call successors, (80) [2022-11-03 01:36:20,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 421 transitions. [2022-11-03 01:36:20,469 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 421 transitions. Word has length 27 [2022-11-03 01:36:20,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:36:20,470 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 421 transitions. [2022-11-03 01:36:20,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 01:36:20,471 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 421 transitions. [2022-11-03 01:36:20,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 01:36:20,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:20,477 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 01:36:20,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 01:36:20,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:20,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:20,478 INFO L85 PathProgramCache]: Analyzing trace with hash 579601810, now seen corresponding path program 1 times [2022-11-03 01:36:20,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:20,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906990614] [2022-11-03 01:36:20,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:20,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:20,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:20,749 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-03 01:36:20,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:36:20,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906990614] [2022-11-03 01:36:20,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906990614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:36:20,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:36:20,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 01:36:20,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074575580] [2022-11-03 01:36:20,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:36:20,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 01:36:20,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:36:20,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 01:36:20,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 01:36:20,753 INFO L87 Difference]: Start difference. First operand 321 states and 421 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:36:21,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:36:21,119 INFO L93 Difference]: Finished difference Result 1030 states and 1368 transitions. [2022-11-03 01:36:21,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 01:36:21,120 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 47 [2022-11-03 01:36:21,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:36:21,125 INFO L225 Difference]: With dead ends: 1030 [2022-11-03 01:36:21,125 INFO L226 Difference]: Without dead ends: 711 [2022-11-03 01:36:21,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-03 01:36:21,128 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 141 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:36:21,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 186 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:36:21,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2022-11-03 01:36:21,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 664. [2022-11-03 01:36:21,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 436 states have (on average 1.2454128440366972) internal successors, (543), 475 states have internal predecessors, (543), 116 states have call successors, (116), 95 states have call predecessors, (116), 111 states have return successors, (162), 117 states have call predecessors, (162), 116 states have call successors, (162) [2022-11-03 01:36:21,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 821 transitions. [2022-11-03 01:36:21,199 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 821 transitions. Word has length 47 [2022-11-03 01:36:21,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:36:21,199 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 821 transitions. [2022-11-03 01:36:21,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-11-03 01:36:21,200 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 821 transitions. [2022-11-03 01:36:21,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-03 01:36:21,202 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:21,203 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-03 01:36:21,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 01:36:21,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:21,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:21,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1849141451, now seen corresponding path program 1 times [2022-11-03 01:36:21,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:21,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257329440] [2022-11-03 01:36:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:21,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:21,264 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 01:36:21,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:36:21,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257329440] [2022-11-03 01:36:21,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257329440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:36:21,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:36:21,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 01:36:21,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679298342] [2022-11-03 01:36:21,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:36:21,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 01:36:21,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:36:21,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 01:36:21,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:36:21,266 INFO L87 Difference]: Start difference. First operand 664 states and 821 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-03 01:36:21,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:36:21,417 INFO L93 Difference]: Finished difference Result 743 states and 923 transitions. [2022-11-03 01:36:21,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 01:36:21,417 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 63 [2022-11-03 01:36:21,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:36:21,420 INFO L225 Difference]: With dead ends: 743 [2022-11-03 01:36:21,420 INFO L226 Difference]: Without dead ends: 322 [2022-11-03 01:36:21,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 01:36:21,422 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 94 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 01:36:21,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 134 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 01:36:21,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2022-11-03 01:36:21,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 322. [2022-11-03 01:36:21,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 212 states have (on average 1.2028301886792452) internal successors, (255), 229 states have internal predecessors, (255), 55 states have call successors, (55), 46 states have call predecessors, (55), 54 states have return successors, (78), 57 states have call predecessors, (78), 55 states have call successors, (78) [2022-11-03 01:36:21,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 388 transitions. [2022-11-03 01:36:21,460 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 388 transitions. Word has length 63 [2022-11-03 01:36:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:36:21,460 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 388 transitions. [2022-11-03 01:36:21,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 4 states have internal predecessors, (46), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-03 01:36:21,461 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 388 transitions. [2022-11-03 01:36:21,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-03 01:36:21,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:21,463 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:36:21,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 01:36:21,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:21,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:21,464 INFO L85 PathProgramCache]: Analyzing trace with hash -687178477, now seen corresponding path program 1 times [2022-11-03 01:36:21,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:21,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862821660] [2022-11-03 01:36:21,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:21,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 01:36:21,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:36:21,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862821660] [2022-11-03 01:36:21,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862821660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:36:21,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 01:36:21,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 01:36:21,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100636319] [2022-11-03 01:36:21,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:36:21,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 01:36:21,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:36:21,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 01:36:21,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-03 01:36:21,981 INFO L87 Difference]: Start difference. First operand 322 states and 388 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-03 01:36:22,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:36:22,331 INFO L93 Difference]: Finished difference Result 779 states and 960 transitions. [2022-11-03 01:36:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 01:36:22,332 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) Word has length 74 [2022-11-03 01:36:22,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:36:22,335 INFO L225 Difference]: With dead ends: 779 [2022-11-03 01:36:22,335 INFO L226 Difference]: Without dead ends: 459 [2022-11-03 01:36:22,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-03 01:36:22,339 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 133 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:36:22,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 191 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:36:22,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2022-11-03 01:36:22,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 392. [2022-11-03 01:36:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 261 states have (on average 1.1915708812260537) internal successors, (311), 279 states have internal predecessors, (311), 64 states have call successors, (64), 58 states have call predecessors, (64), 66 states have return successors, (87), 66 states have call predecessors, (87), 64 states have call successors, (87) [2022-11-03 01:36:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 462 transitions. [2022-11-03 01:36:22,402 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 462 transitions. Word has length 74 [2022-11-03 01:36:22,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:36:22,402 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 462 transitions. [2022-11-03 01:36:22,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 6 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 5 states have call predecessors, (9), 6 states have call successors, (9) [2022-11-03 01:36:22,403 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 462 transitions. [2022-11-03 01:36:22,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-03 01:36:22,404 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:36:22,405 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:36:22,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 01:36:22,405 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:36:22,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:36:22,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1279016965, now seen corresponding path program 1 times [2022-11-03 01:36:22,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:36:22,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069173890] [2022-11-03 01:36:22,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:22,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:36:22,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-03 01:36:22,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:36:22,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069173890] [2022-11-03 01:36:22,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069173890] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:36:22,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877158842] [2022-11-03 01:36:22,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:36:22,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:36:22,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:36:22,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:36:22,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 01:36:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:36:23,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 01:36:23,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:36:23,488 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-03 01:36:23,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 01:36:24,201 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 01:36:24,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877158842] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 01:36:24,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [521255549] [2022-11-03 01:36:24,227 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2022-11-03 01:36:24,227 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 01:36:24,231 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 01:36:24,237 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 01:36:24,237 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 01:36:45,359 INFO L197 IcfgInterpreter]: Interpreting procedure waterRise with input of size 307 for LOIs [2022-11-03 01:36:45,430 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 34 for LOIs [2022-11-03 01:36:46,050 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 28 for LOIs [2022-11-03 01:36:46,173 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 53 for LOIs [2022-11-03 01:36:46,279 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 27 for LOIs [2022-11-03 01:36:46,281 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 29 for LOIs [2022-11-03 01:36:46,285 INFO L197 IcfgInterpreter]: Interpreting procedure deactivatePump with input of size 52 for LOIs [2022-11-03 01:36:46,293 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 01:37:00,795 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '9225#(and (<= 0 |old(~pumpRunning~0)|) (<= ~pumpRunning~0 1) (<= |old(~pumpRunning~0)| 1) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1| ~methaneLevelCritical~0) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~10#1|) (<= |#NULL.offset| 0) (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1|) (= 1 ~systemActive~0) (<= 0 ~methAndRunningLastTime~0) (<= 0 |old(~methAndRunningLastTime~0)|) (<= |old(~methAndRunningLastTime~0)| 1) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1| 0)) (<= 0 ~head~0.base) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~10#1|) (<= 0 ~methaneLevelCritical~0) (<= 0 ~pumpRunning~0) (<= ~head~0.base 0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 0)) (<= 0 |#NULL.offset|) (not (= ~methAndRunningLastTime~0 0)) (<= ~methAndRunningLastTime~0 1) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1| 1) (<= 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-03 01:37:00,795 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-03 01:37:00,795 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 01:37:00,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 33 [2022-11-03 01:37:00,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551483417] [2022-11-03 01:37:00,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 01:37:00,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-03 01:37:00,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:00,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-03 01:37:00,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=466, Invalid=4646, Unknown=0, NotChecked=0, Total=5112 [2022-11-03 01:37:00,799 INFO L87 Difference]: Start difference. First operand 392 states and 462 transitions. Second operand has 33 states, 24 states have (on average 4.333333333333333) internal successors, (104), 24 states have internal predecessors, (104), 10 states have call successors, (25), 6 states have call predecessors, (25), 15 states have return successors, (26), 16 states have call predecessors, (26), 10 states have call successors, (26) [2022-11-03 01:37:07,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:07,288 INFO L93 Difference]: Finished difference Result 1172 states and 1519 transitions. [2022-11-03 01:37:07,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-11-03 01:37:07,289 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 24 states have (on average 4.333333333333333) internal successors, (104), 24 states have internal predecessors, (104), 10 states have call successors, (25), 6 states have call predecessors, (25), 15 states have return successors, (26), 16 states have call predecessors, (26), 10 states have call successors, (26) Word has length 77 [2022-11-03 01:37:07,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:07,292 INFO L225 Difference]: With dead ends: 1172 [2022-11-03 01:37:07,293 INFO L226 Difference]: Without dead ends: 779 [2022-11-03 01:37:07,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 189 SyntacticMatches, 2 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8222 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=2144, Invalid=20808, Unknown=0, NotChecked=0, Total=22952 [2022-11-03 01:37:07,301 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 1062 mSDsluCounter, 888 mSDsCounter, 0 mSdLazyCounter, 3917 mSolverCounterSat, 939 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 4856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 939 IncrementalHoareTripleChecker+Valid, 3917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:07,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 902 Invalid, 4856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [939 Valid, 3917 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 01:37:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-11-03 01:37:07,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 556. [2022-11-03 01:37:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 368 states have (on average 1.1603260869565217) internal successors, (427), 395 states have internal predecessors, (427), 91 states have call successors, (91), 86 states have call predecessors, (91), 96 states have return successors, (112), 92 states have call predecessors, (112), 91 states have call successors, (112) [2022-11-03 01:37:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 630 transitions. [2022-11-03 01:37:07,376 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 630 transitions. Word has length 77 [2022-11-03 01:37:07,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:07,376 INFO L495 AbstractCegarLoop]: Abstraction has 556 states and 630 transitions. [2022-11-03 01:37:07,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 24 states have (on average 4.333333333333333) internal successors, (104), 24 states have internal predecessors, (104), 10 states have call successors, (25), 6 states have call predecessors, (25), 15 states have return successors, (26), 16 states have call predecessors, (26), 10 states have call successors, (26) [2022-11-03 01:37:07,377 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 630 transitions. [2022-11-03 01:37:07,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-11-03 01:37:07,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:07,385 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 01:37:07,424 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:07,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:37:07,598 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:37:07,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:07,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1382207215, now seen corresponding path program 1 times [2022-11-03 01:37:07,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:07,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120613412] [2022-11-03 01:37:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:07,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:07,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 42 proven. 21 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-03 01:37:07,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:07,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120613412] [2022-11-03 01:37:07,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120613412] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:37:07,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564282007] [2022-11-03 01:37:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:07,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:37:07,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:37:07,975 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:37:08,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 01:37:08,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:08,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 01:37:08,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:08,273 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-03 01:37:08,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:37:08,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564282007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:08,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:37:08,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 20 [2022-11-03 01:37:08,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663743238] [2022-11-03 01:37:08,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:08,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:37:08,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:08,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:37:08,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-03 01:37:08,276 INFO L87 Difference]: Start difference. First operand 556 states and 630 transitions. Second operand has 11 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 01:37:08,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:08,704 INFO L93 Difference]: Finished difference Result 1083 states and 1261 transitions. [2022-11-03 01:37:08,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 01:37:08,705 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) Word has length 119 [2022-11-03 01:37:08,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:08,708 INFO L225 Difference]: With dead ends: 1083 [2022-11-03 01:37:08,709 INFO L226 Difference]: Without dead ends: 784 [2022-11-03 01:37:08,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=671, Unknown=0, NotChecked=0, Total=756 [2022-11-03 01:37:08,711 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 45 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:08,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 733 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 01:37:08,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-11-03 01:37:08,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 676. [2022-11-03 01:37:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 449 states have (on average 1.1559020044543429) internal successors, (519), 479 states have internal predecessors, (519), 109 states have call successors, (109), 104 states have call predecessors, (109), 117 states have return successors, (143), 111 states have call predecessors, (143), 109 states have call successors, (143) [2022-11-03 01:37:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 771 transitions. [2022-11-03 01:37:08,786 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 771 transitions. Word has length 119 [2022-11-03 01:37:08,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:08,786 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 771 transitions. [2022-11-03 01:37:08,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 8.375) internal successors, (67), 8 states have internal predecessors, (67), 3 states have call successors, (16), 3 states have call predecessors, (16), 6 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 01:37:08,787 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 771 transitions. [2022-11-03 01:37:08,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 01:37:08,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 01:37:08,790 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 01:37:08,829 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:09,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:37:09,006 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 01:37:09,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 01:37:09,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1362279203, now seen corresponding path program 2 times [2022-11-03 01:37:09,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 01:37:09,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442022254] [2022-11-03 01:37:09,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 01:37:09,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 01:37:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 01:37:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 43 proven. 23 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-03 01:37:09,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 01:37:09,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442022254] [2022-11-03 01:37:09,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442022254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 01:37:09,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504613255] [2022-11-03 01:37:09,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 01:37:09,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 01:37:09,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 01:37:09,335 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 01:37:09,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 01:37:09,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-03 01:37:09,456 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 01:37:09,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 01:37:09,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 01:37:09,545 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 01:37:09,545 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 01:37:09,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [504613255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 01:37:09,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 01:37:09,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 16 [2022-11-03 01:37:09,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7398450] [2022-11-03 01:37:09,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 01:37:09,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 01:37:09,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 01:37:09,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 01:37:09,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-03 01:37:09,548 INFO L87 Difference]: Start difference. First operand 676 states and 771 transitions. Second operand has 11 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:37:10,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 01:37:10,026 INFO L93 Difference]: Finished difference Result 1104 states and 1278 transitions. [2022-11-03 01:37:10,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-03 01:37:10,027 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) Word has length 122 [2022-11-03 01:37:10,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 01:37:10,028 INFO L225 Difference]: With dead ends: 1104 [2022-11-03 01:37:10,028 INFO L226 Difference]: Without dead ends: 0 [2022-11-03 01:37:10,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2022-11-03 01:37:10,031 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 50 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 01:37:10,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 451 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 01:37:10,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-03 01:37:10,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-03 01:37:10,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 01:37:10,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-03 01:37:10,032 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 122 [2022-11-03 01:37:10,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 01:37:10,033 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-03 01:37:10,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (15), 5 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 01:37:10,033 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-03 01:37:10,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-03 01:37:10,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 01:37:10,070 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 01:37:10,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-03 01:37:10,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-03 01:37:16,605 INFO L895 garLoopResultBuilder]: At program point deactivatePumpENTRY(lines 818 825) the Hoare annotation is: (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= 0 ~systemActive~0)) [2022-11-03 01:37:16,606 INFO L899 garLoopResultBuilder]: For program point deactivatePumpEXIT(lines 818 825) no Hoare annotation was computed. [2022-11-03 01:37:16,606 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 734 740) no Hoare annotation was computed. [2022-11-03 01:37:16,606 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 734 740) the Hoare annotation is: true [2022-11-03 01:37:16,606 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 636 647) the Hoare annotation is: (or (not (= 1 ~systemActive~0)) (= |old(~methaneLevelCritical~0)| ~methaneLevelCritical~0) (not (= ~methAndRunningLastTime~0 0))) [2022-11-03 01:37:16,606 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 636 647) no Hoare annotation was computed. [2022-11-03 01:37:16,607 INFO L895 garLoopResultBuilder]: At program point L787(line 787) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1) (or .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~pumpRunning~0 0) (or (= |old(~waterLevel~0)| ~waterLevel~0) (= ~waterLevel~0 1))) .cse1) (or (not (= |old(~pumpRunning~0)| 0)) (not (= 0 ~systemActive~0))))) [2022-11-03 01:37:16,607 INFO L895 garLoopResultBuilder]: At program point L787-1(lines 768 792) the Hoare annotation is: (let ((.cse10 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse7 (= ~pumpRunning~0 0)) (.cse9 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse8 (= ~waterLevel~0 1)) (.cse11 (= 1 ~systemActive~0))) (let ((.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse3 (not .cse11)) (.cse5 (= ~methAndRunningLastTime~0 0)) (.cse2 (= ~methaneLevelCritical~0 0)) (.cse6 (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0)) (.cse4 (and .cse10 .cse7 .cse11 (or .cse9 .cse8))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse1 .cse3 (and .cse5 .cse6) (not (= |old(~pumpRunning~0)| 1))) (or .cse0 .cse1 .cse5 .cse3) (or .cse1 .cse3 (and .cse7 .cse5 .cse6 (not (= |timeShift_processEnvironment_~tmp~6#1| 0))) (and (not .cse8) .cse2 (or .cse0 .cse9) (= ~pumpRunning~0 1)) (and .cse10 .cse0 .cse5 .cse2 .cse6) .cse4) (or .cse0 (not (= 0 ~systemActive~0)))))) [2022-11-03 01:37:16,607 INFO L899 garLoopResultBuilder]: For program point L721-1(lines 721 727) no Hoare annotation was computed. [2022-11-03 01:37:16,607 INFO L899 garLoopResultBuilder]: For program point L486(lines 486 496) no Hoare annotation was computed. [2022-11-03 01:37:16,608 INFO L895 garLoopResultBuilder]: At program point L482(lines 482 499) the Hoare annotation is: (let ((.cse1 (= ~methaneLevelCritical~0 0)) (.cse7 (not (= |old(~pumpRunning~0)| 0))) (.cse12 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse11 (= ~waterLevel~0 1))) (let ((.cse4 (not (= 1 ~systemActive~0))) (.cse8 (= ~pumpRunning~0 0)) (.cse5 (or .cse7 .cse12 .cse11)) (.cse2 (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0)) (.cse0 (= ~methAndRunningLastTime~0 0)) (.cse3 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse6 (not .cse1)) (.cse9 (not (= 0 ~systemActive~0)))) (and (or (and .cse0 .cse1 .cse2) .cse3 .cse4 (and .cse1 (not (= |old(~pumpRunning~0)| 1))) (and .cse5 .cse6)) (or .cse7 .cse8 .cse9) (or .cse7 .cse3 .cse0 .cse4 .cse6) (let ((.cse13 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse10 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1| ~methaneLevelCritical~0))) (or (and .cse8 .cse10 .cse2 (not (= |timeShift_processEnvironment_~tmp~6#1| 0))) .cse3 (and (not .cse11) .cse1 .cse10 (or .cse7 .cse12) (= ~pumpRunning~0 1)) .cse4 (and .cse13 .cse8 .cse5 .cse10) (and .cse13 .cse7 .cse0 .cse1 .cse10 .cse2))) (or (and (= |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1| 0) .cse0) .cse7 .cse3 .cse6 .cse9)))) [2022-11-03 01:37:16,608 INFO L895 garLoopResultBuilder]: At program point L482-1(lines 474 502) the Hoare annotation is: (let ((.cse12 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse11 (= ~waterLevel~0 1)) (.cse7 (= ~methaneLevelCritical~0 0))) (let ((.cse4 (not .cse7)) (.cse1 (not (= 0 ~systemActive~0))) (.cse5 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse6 (not (= 1 ~systemActive~0))) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse8 (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0)) (.cse9 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse2 (= ~pumpRunning~0 0)) (.cse10 (or .cse12 .cse11)) (.cse3 (= ~methAndRunningLastTime~0 0))) (and (or .cse0 .cse1 (and .cse2 .cse3)) (or (and (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1| 0) .cse4) .cse5 .cse6 (and (or .cse0 .cse7) (or .cse4 (not (= |old(~pumpRunning~0)| 1)))) (and .cse7 .cse8)) (or (and .cse9 .cse0 .cse8) .cse5 .cse6 .cse4 (and .cse9 .cse2 .cse3 .cse10) (and (not .cse11) (or .cse0 .cse12) (= ~pumpRunning~0 1))) (or .cse0 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1| 0) .cse5 .cse4 .cse1) (let ((.cse13 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~3#1| ~methaneLevelCritical~0))) (or .cse5 .cse6 (and .cse0 .cse2 .cse3 .cse13 .cse8) (and .cse9 .cse2 .cse3 .cse13 .cse10) (and .cse3 .cse7 .cse13)))))) [2022-11-03 01:37:16,608 INFO L899 garLoopResultBuilder]: For program point L714-1(lines 713 732) no Hoare annotation was computed. [2022-11-03 01:37:16,608 INFO L899 garLoopResultBuilder]: For program point L776(lines 776 784) no Hoare annotation was computed. [2022-11-03 01:37:16,609 INFO L899 garLoopResultBuilder]: For program point L487(lines 487 493) no Hoare annotation was computed. [2022-11-03 01:37:16,609 INFO L899 garLoopResultBuilder]: For program point L772(lines 772 789) no Hoare annotation was computed. [2022-11-03 01:37:16,609 INFO L895 garLoopResultBuilder]: At program point L54(line 54) the Hoare annotation is: (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) (not (= 1 ~systemActive~0))) (or (not (= |old(~pumpRunning~0)| 0)) (not (= 0 ~systemActive~0)))) [2022-11-03 01:37:16,609 INFO L895 garLoopResultBuilder]: At program point L480(line 480) the Hoare annotation is: (let ((.cse11 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse5 (= ~pumpRunning~0 0)) (.cse10 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse9 (= ~waterLevel~0 1)) (.cse12 (= 1 ~systemActive~0))) (let ((.cse6 (not (= 0 ~systemActive~0))) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse3 (not .cse12)) (.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse7 (= ~methAndRunningLastTime~0 0)) (.cse2 (= ~methaneLevelCritical~0 0)) (.cse8 (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0)) (.cse4 (and .cse11 .cse5 .cse12 (or .cse10 .cse9)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse0 .cse5 .cse6) (or .cse0 .cse1 .cse7 .cse6) (or .cse1 .cse3 (and .cse7 .cse8) (not (= |old(~pumpRunning~0)| 1))) (or .cse0 .cse1 .cse7 .cse3) (or .cse1 .cse3 (and .cse5 .cse7 .cse8 (not (= |timeShift_processEnvironment_~tmp~6#1| 0))) (and (not .cse9) .cse2 (or .cse0 .cse10) (= ~pumpRunning~0 1)) (and .cse11 .cse0 .cse7 .cse2 .cse8) .cse4)))) [2022-11-03 01:37:16,609 INFO L899 garLoopResultBuilder]: For program point L480-1(line 480) no Hoare annotation was computed. [2022-11-03 01:37:16,610 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 710 733) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0))) (.cse1 (not (= 0 ~systemActive~0))) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse2 (not (= |old(~methAndRunningLastTime~0)| 0)))) (and (or .cse0 (= ~pumpRunning~0 0) .cse1) (or .cse0 .cse2 .cse3 .cse1) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) .cse2 (not (= 1 ~systemActive~0))))) [2022-11-03 01:37:16,610 INFO L895 garLoopResultBuilder]: At program point L782(line 782) the Hoare annotation is: (let ((.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) (not (= 1 ~systemActive~0)) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (= ~methAndRunningLastTime~0 0) (= ~methaneLevelCritical~0 0) (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0))) (or .cse0 (not (= 0 ~systemActive~0))))) [2022-11-03 01:37:16,610 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 710 733) no Hoare annotation was computed. [2022-11-03 01:37:16,610 INFO L895 garLoopResultBuilder]: At program point L778(line 778) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))) (or .cse2 .cse0 .cse1) (or .cse0 .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methAndRunningLastTime~0 0) (= |timeShift_processEnvironment_~tmp~6#1| ~methaneLevelCritical~0))) (or .cse2 (not (= 0 ~systemActive~0))))) [2022-11-03 01:37:16,611 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-03 01:37:16,611 INFO L895 garLoopResultBuilder]: At program point L774(line 774) the Hoare annotation is: (let ((.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse0 (not (= |old(~pumpRunning~0)| 0)))) (and (or .cse0 .cse1 .cse2) (or .cse1 .cse2 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methAndRunningLastTime~0 0))) (or .cse0 (not (= 0 ~systemActive~0))))) [2022-11-03 01:37:16,611 INFO L899 garLoopResultBuilder]: For program point L774-1(line 774) no Hoare annotation was computed. [2022-11-03 01:37:16,611 INFO L902 garLoopResultBuilder]: At program point L512(line 512) the Hoare annotation is: true [2022-11-03 01:37:16,611 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 506 535) no Hoare annotation was computed. [2022-11-03 01:37:16,611 INFO L899 garLoopResultBuilder]: For program point L512-1(line 512) no Hoare annotation was computed. [2022-11-03 01:37:16,612 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 506 535) the Hoare annotation is: true [2022-11-03 01:37:16,612 INFO L902 garLoopResultBuilder]: At program point L531(lines 506 535) the Hoare annotation is: true [2022-11-03 01:37:16,612 INFO L899 garLoopResultBuilder]: For program point L527(line 527) no Hoare annotation was computed. [2022-11-03 01:37:16,612 INFO L899 garLoopResultBuilder]: For program point L520(lines 520 524) no Hoare annotation was computed. [2022-11-03 01:37:16,612 INFO L902 garLoopResultBuilder]: At program point L520-1(lines 520 524) the Hoare annotation is: true [2022-11-03 01:37:16,612 INFO L902 garLoopResultBuilder]: At program point L516-2(lines 516 530) the Hoare annotation is: true [2022-11-03 01:37:16,612 INFO L902 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 648 656) the Hoare annotation is: true [2022-11-03 01:37:16,613 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 648 656) no Hoare annotation was computed. [2022-11-03 01:37:16,613 INFO L895 garLoopResultBuilder]: At program point L907(line 907) the Hoare annotation is: (and (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0) (not (= 0 ~systemActive~0))) [2022-11-03 01:37:16,613 INFO L899 garLoopResultBuilder]: For program point L928(lines 927 974) no Hoare annotation was computed. [2022-11-03 01:37:16,613 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-03 01:37:16,613 INFO L899 garLoopResultBuilder]: For program point L957(lines 957 970) no Hoare annotation was computed. [2022-11-03 01:37:16,614 INFO L895 garLoopResultBuilder]: At program point L949(line 949) the Hoare annotation is: (let ((.cse0 (= ~methAndRunningLastTime~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= 1 ~systemActive~0) .cse1) (and (= ~pumpRunning~0 0) .cse0 .cse1 (= 0 ~systemActive~0)))) [2022-11-03 01:37:16,614 INFO L902 garLoopResultBuilder]: At program point L978(lines 917 982) the Hoare annotation is: true [2022-11-03 01:37:16,614 INFO L899 garLoopResultBuilder]: For program point L937(lines 937 943) no Hoare annotation was computed. [2022-11-03 01:37:16,614 INFO L899 garLoopResultBuilder]: For program point L937-1(lines 937 943) no Hoare annotation was computed. [2022-11-03 01:37:16,614 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-03 01:37:16,614 INFO L895 garLoopResultBuilder]: At program point L975(lines 926 976) the Hoare annotation is: false [2022-11-03 01:37:16,614 INFO L899 garLoopResultBuilder]: For program point L905(lines 905 911) no Hoare annotation was computed. [2022-11-03 01:37:16,615 INFO L895 garLoopResultBuilder]: At program point L905-1(lines 905 911) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 .cse1 (not (= 0 ~systemActive~0))) (and .cse0 (= ~methAndRunningLastTime~0 0) .cse1))) [2022-11-03 01:37:16,615 INFO L899 garLoopResultBuilder]: For program point L963(lines 963 969) no Hoare annotation was computed. [2022-11-03 01:37:16,615 INFO L895 garLoopResultBuilder]: At program point L963-2(lines 957 970) the Hoare annotation is: (let ((.cse0 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~pumpRunning~0 0) .cse0 (= 0 ~systemActive~0)) (and (= ~methAndRunningLastTime~0 0) (= 1 ~systemActive~0) .cse0))) [2022-11-03 01:37:16,615 INFO L899 garLoopResultBuilder]: For program point L947(lines 947 953) no Hoare annotation was computed. [2022-11-03 01:37:16,615 INFO L899 garLoopResultBuilder]: For program point L947-1(lines 947 953) no Hoare annotation was computed. [2022-11-03 01:37:16,615 INFO L895 garLoopResultBuilder]: At program point L592(lines 592 599) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= ~methaneLevelCritical~0 0) (= 1 ~systemActive~0) (= ~waterLevel~0 1)) [2022-11-03 01:37:16,616 INFO L902 garLoopResultBuilder]: At program point L592-2(lines 592 599) the Hoare annotation is: true [2022-11-03 01:37:16,616 INFO L895 garLoopResultBuilder]: At program point L972(lines 927 974) the Hoare annotation is: (let ((.cse1 (= 1 ~systemActive~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse0 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= ~methaneLevelCritical~0 0) .cse1 .cse2) (and .cse3 .cse0 .cse1 .cse2) (and .cse3 .cse0 .cse2 (= 0 ~systemActive~0)))) [2022-11-03 01:37:16,616 INFO L895 garLoopResultBuilder]: At program point L939(line 939) the Hoare annotation is: (let ((.cse1 (= 1 ~systemActive~0)) (.cse3 (= ~pumpRunning~0 0)) (.cse0 (= ~methAndRunningLastTime~0 0)) (.cse2 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and .cse0 (= ~methaneLevelCritical~0 0) .cse1 .cse2) (and .cse3 .cse0 .cse1 .cse2) (and .cse3 .cse0 .cse2 (= 0 ~systemActive~0)))) [2022-11-03 01:37:16,616 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 624 635) no Hoare annotation was computed. [2022-11-03 01:37:16,616 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 624 635) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2) (or (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2))) [2022-11-03 01:37:16,616 INFO L895 garLoopResultBuilder]: At program point L756(line 756) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) .cse1 (and (= ~pumpRunning~0 0) (or (not (= ~waterLevel~0 1)) (= |processEnvironment__wrappee__methaneQuery_~tmp~5#1| 0)))) (or .cse1 .cse0 (not (= ~methaneLevelCritical~0 0)) (not (= ~methAndRunningLastTime~0 0))))) [2022-11-03 01:37:16,617 INFO L899 garLoopResultBuilder]: For program point L750(lines 750 758) no Hoare annotation was computed. [2022-11-03 01:37:16,617 INFO L895 garLoopResultBuilder]: At program point L746(lines 746 763) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (= ~methaneLevelCritical~0 0)) (not (= ~methAndRunningLastTime~0 0))) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0))) [2022-11-03 01:37:16,617 INFO L895 garLoopResultBuilder]: At program point L806(line 806) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0)) (not (= ~methAndRunningLastTime~0 0))) (or (not .cse1) .cse0 (and (not (= ~waterLevel~0 1)) (= ~pumpRunning~0 0))))) [2022-11-03 01:37:16,617 INFO L895 garLoopResultBuilder]: At program point L806-1(line 806) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) .cse1 (and (not (= ~waterLevel~0 1)) (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__methaneQuery_activatePump_#t~ret38#1| ~methaneLevelCritical~0))) (or .cse1 .cse0 (not (= ~methaneLevelCritical~0 0)) (not (= ~methAndRunningLastTime~0 0))))) [2022-11-03 01:37:16,617 INFO L895 garLoopResultBuilder]: At program point L761(line 761) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (= ~methaneLevelCritical~0 0)) (not (= ~methAndRunningLastTime~0 0))) (or (not (= |old(~pumpRunning~0)| 0)) .cse0))) [2022-11-03 01:37:16,618 INFO L899 garLoopResultBuilder]: For program point L761-1(lines 742 766) no Hoare annotation was computed. [2022-11-03 01:37:16,618 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 742 766) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse0 (not (= ~methaneLevelCritical~0 0)) (not (= ~methAndRunningLastTime~0 0))) (or (not (= |old(~pumpRunning~0)| 0)) (= ~pumpRunning~0 0) .cse0))) [2022-11-03 01:37:16,618 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 742 766) no Hoare annotation was computed. [2022-11-03 01:37:16,618 INFO L902 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 826 836) the Hoare annotation is: true [2022-11-03 01:37:16,618 INFO L902 garLoopResultBuilder]: At program point L831(line 831) the Hoare annotation is: true [2022-11-03 01:37:16,618 INFO L899 garLoopResultBuilder]: For program point L831-1(line 831) no Hoare annotation was computed. [2022-11-03 01:37:16,619 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 826 836) no Hoare annotation was computed. [2022-11-03 01:37:16,622 INFO L444 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 01:37:16,624 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 01:37:16,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 01:37:16 BoogieIcfgContainer [2022-11-03 01:37:16,671 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 01:37:16,672 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 01:37:16,672 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 01:37:16,672 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 01:37:16,673 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:36:18" (3/4) ... [2022-11-03 01:37:16,676 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-03 01:37:16,682 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure deactivatePump [2022-11-03 01:37:16,682 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-03 01:37:16,682 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-03 01:37:16,682 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-03 01:37:16,682 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-03 01:37:16,682 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-11-03 01:37:16,683 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-03 01:37:16,683 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2022-11-03 01:37:16,683 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2022-11-03 01:37:16,703 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 73 nodes and edges [2022-11-03 01:37:16,705 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-03 01:37:16,706 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-03 01:37:16,707 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-03 01:37:16,707 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-03 01:37:16,708 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 01:37:16,708 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-03 01:37:16,736 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0) || !(0 == systemActive))) && ((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) [2022-11-03 01:37:16,737 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methaneLevelCritical == 0) || !(1 == systemActive)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && 1 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1))) && (((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (methAndRunningLastTime == 0 && tmp == methaneLevelCritical)) || !(\old(pumpRunning) == 1))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0) || !(1 == systemActive))) && (((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && !(tmp == 0))) || (((!(waterLevel == 1) && methaneLevelCritical == 0) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel)) && pumpRunning == 1)) || ((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == methaneLevelCritical)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && 1 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1)))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2022-11-03 01:37:16,738 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0)) && ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) [2022-11-03 01:37:16,739 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((((methAndRunningLastTime == 0 && methaneLevelCritical == 0) && tmp == methaneLevelCritical) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || (methaneLevelCritical == 0 && !(\old(pumpRunning) == 1))) || (((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1) && !(methaneLevelCritical == 0))) && ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && ((((((((pumpRunning == 0 && tmp == methaneLevelCritical) && tmp == methaneLevelCritical) && !(tmp == 0)) || !(\old(methAndRunningLastTime) == 0)) || ((((!(waterLevel == 1) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel)) && pumpRunning == 1)) || !(1 == systemActive)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1)) && tmp == methaneLevelCritical)) || (((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical))) && (((((tmp == 0 && methAndRunningLastTime == 0) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(methaneLevelCritical == 0)) || !(0 == systemActive)) [2022-11-03 01:37:16,739 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) || !(0 == systemActive)) || (pumpRunning == 0 && methAndRunningLastTime == 0)) && (((((tmp___0 == 0 && !(methaneLevelCritical == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || (methaneLevelCritical == 0 && tmp == methaneLevelCritical))) && (((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && (\old(waterLevel) == waterLevel || waterLevel == 1))) || ((!(waterLevel == 1) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel)) && pumpRunning == 1))) && ((((!(\old(pumpRunning) == 0) || tmp == 0) || !(\old(methAndRunningLastTime) == 0)) || !(methaneLevelCritical == 0)) || !(0 == systemActive))) && ((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || ((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) || ((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && (\old(waterLevel) == waterLevel || waterLevel == 1))) || ((methAndRunningLastTime == 0 && methaneLevelCritical == 0) && tmp == methaneLevelCritical)) [2022-11-03 01:37:16,740 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || ((!(waterLevel == 1) && pumpRunning == 0) && aux-isMethaneAlarm()-aux == methaneLevelCritical)) && (((!(1 == systemActive) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0)) [2022-11-03 01:37:16,741 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) [2022-11-03 01:37:16,791 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/witness.graphml [2022-11-03 01:37:16,792 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 01:37:16,793 INFO L158 Benchmark]: Toolchain (without parser) took 59550.63ms. Allocated memory was 136.3MB in the beginning and 398.5MB in the end (delta: 262.1MB). Free memory was 102.3MB in the beginning and 249.1MB in the end (delta: -146.8MB). Peak memory consumption was 113.8MB. Max. memory is 16.1GB. [2022-11-03 01:37:16,793 INFO L158 Benchmark]: CDTParser took 16.71ms. Allocated memory is still 83.9MB. Free memory was 38.1MB in the beginning and 55.4MB in the end (delta: -17.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-11-03 01:37:16,793 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.29ms. Allocated memory is still 136.3MB. Free memory was 102.1MB in the beginning and 103.7MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 01:37:16,794 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.63ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 101.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:37:16,794 INFO L158 Benchmark]: Boogie Preprocessor took 41.80ms. Allocated memory is still 136.3MB. Free memory was 101.7MB in the beginning and 99.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 01:37:16,795 INFO L158 Benchmark]: RCFGBuilder took 816.79ms. Allocated memory is still 136.3MB. Free memory was 99.6MB in the beginning and 68.9MB in the end (delta: 30.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2022-11-03 01:37:16,796 INFO L158 Benchmark]: TraceAbstraction took 57979.47ms. Allocated memory was 136.3MB in the beginning and 398.5MB in the end (delta: 262.1MB). Free memory was 68.1MB in the beginning and 255.4MB in the end (delta: -187.3MB). Peak memory consumption was 203.2MB. Max. memory is 16.1GB. [2022-11-03 01:37:16,796 INFO L158 Benchmark]: Witness Printer took 120.54ms. Allocated memory is still 398.5MB. Free memory was 255.4MB in the beginning and 249.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-03 01:37:16,799 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 16.71ms. Allocated memory is still 83.9MB. Free memory was 38.1MB in the beginning and 55.4MB in the end (delta: -17.3MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 521.29ms. Allocated memory is still 136.3MB. Free memory was 102.1MB in the beginning and 103.7MB in the end (delta: -1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.63ms. Allocated memory is still 136.3MB. Free memory was 103.7MB in the beginning and 101.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.80ms. Allocated memory is still 136.3MB. Free memory was 101.7MB in the beginning and 99.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 816.79ms. Allocated memory is still 136.3MB. Free memory was 99.6MB in the beginning and 68.9MB in the end (delta: 30.7MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * TraceAbstraction took 57979.47ms. Allocated memory was 136.3MB in the beginning and 398.5MB in the end (delta: 262.1MB). Free memory was 68.1MB in the beginning and 255.4MB in the end (delta: -187.3MB). Peak memory consumption was 203.2MB. Max. memory is 16.1GB. * Witness Printer took 120.54ms. Allocated memory is still 398.5MB. Free memory was 255.4MB in the beginning and 249.1MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 57.8s, OverallIterations: 11, TraceHistogramMax: 6, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1738 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1704 mSDsluCounter, 3378 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2962 mSDsCounter, 1112 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5472 IncrementalHoareTripleChecker+Invalid, 6584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1112 mSolverCounterUnsat, 878 mSDtfsCounter, 5472 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 681 GetRequests, 449 SyntacticMatches, 2 SemanticMatches, 230 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8397 ImplicationChecksByTransitivity, 19.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=676occurred in iteration=10, InterpolantAutomatonStates: 167, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 456 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 39 LocationsWithAnnotation, 1599 PreInvPairs, 1799 NumberOfFragments, 1378 HoareAnnotationTreeSize, 1599 FomulaSimplifications, 5788 FormulaSimplificationTreeSizeReduction, 1.1s HoareSimplificationTime, 39 FomulaSimplificationsInter, 39174 FormulaSimplificationTreeSizeReductionInter, 5.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 927 NumberOfCodeBlocks, 873 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 989 ConstructedInterpolants, 0 QuantifiedInterpolants, 2363 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1459 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 15 InterpolantComputations, 10 PerfectInterpolantSequences, 565/634 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 592]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 506]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: (!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 768]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methaneLevelCritical == 0) || !(1 == systemActive)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && 1 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1))) && (((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (methAndRunningLastTime == 0 && tmp == methaneLevelCritical)) || !(\old(pumpRunning) == 1))) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0) || !(1 == systemActive))) && (((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && !(tmp == 0))) || (((!(waterLevel == 1) && methaneLevelCritical == 0) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel)) && pumpRunning == 1)) || ((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == methaneLevelCritical)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && 1 == systemActive) && (\old(waterLevel) == waterLevel || waterLevel == 1)))) && (!(\old(pumpRunning) == 0) || !(0 == systemActive)) - InvariantResult [Line: 516]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 474]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) || !(0 == systemActive)) || (pumpRunning == 0 && methAndRunningLastTime == 0)) && (((((tmp___0 == 0 && !(methaneLevelCritical == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((!(\old(pumpRunning) == 0) || methaneLevelCritical == 0) && (!(methaneLevelCritical == 0) || !(\old(pumpRunning) == 1)))) || (methaneLevelCritical == 0 && tmp == methaneLevelCritical))) && (((((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && tmp == methaneLevelCritical) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && (\old(waterLevel) == waterLevel || waterLevel == 1))) || ((!(waterLevel == 1) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel)) && pumpRunning == 1))) && ((((!(\old(pumpRunning) == 0) || tmp == 0) || !(\old(methAndRunningLastTime) == 0)) || !(methaneLevelCritical == 0)) || !(0 == systemActive))) && ((((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || ((((!(\old(pumpRunning) == 0) && pumpRunning == 0) && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) || ((((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && (\old(waterLevel) == waterLevel || waterLevel == 1))) || ((methAndRunningLastTime == 0 && methaneLevelCritical == 0) && tmp == methaneLevelCritical)) - InvariantResult [Line: 482]: Loop Invariant Derived loop invariant: (((((((((methAndRunningLastTime == 0 && methaneLevelCritical == 0) && tmp == methaneLevelCritical) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || (methaneLevelCritical == 0 && !(\old(pumpRunning) == 1))) || (((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1) && !(methaneLevelCritical == 0))) && ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && ((((((((pumpRunning == 0 && tmp == methaneLevelCritical) && tmp == methaneLevelCritical) && !(tmp == 0)) || !(\old(methAndRunningLastTime) == 0)) || ((((!(waterLevel == 1) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) && (!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel)) && pumpRunning == 1)) || !(1 == systemActive)) || (((pumpRunning == \old(pumpRunning) && pumpRunning == 0) && ((!(\old(pumpRunning) == 0) || \old(waterLevel) == waterLevel) || waterLevel == 1)) && tmp == methaneLevelCritical)) || (((((pumpRunning == \old(pumpRunning) && !(\old(pumpRunning) == 0)) && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical))) && (((((tmp == 0 && methAndRunningLastTime == 0) || !(\old(pumpRunning) == 0)) || !(\old(methAndRunningLastTime) == 0)) || !(methaneLevelCritical == 0)) || !(0 == systemActive)) - InvariantResult [Line: 746]: Loop Invariant Derived loop invariant: (((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0)) && ((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) - InvariantResult [Line: 710]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(0 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || methAndRunningLastTime == 0) || !(0 == systemActive))) && ((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && \old(waterLevel) == waterLevel) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) - InvariantResult [Line: 917]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 926]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 905]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && splverifierCounter == 0) && !(0 == systemActive)) || ((pumpRunning == 0 && methAndRunningLastTime == 0) && splverifierCounter == 0) - InvariantResult [Line: 927]: Loop Invariant Derived loop invariant: ((((methAndRunningLastTime == 0 && methaneLevelCritical == 0) && 1 == systemActive) && splverifierCounter == 0) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && splverifierCounter == 0)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && splverifierCounter == 0) && 0 == systemActive) - InvariantResult [Line: 592]: Loop Invariant Derived loop invariant: (((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && 1 == systemActive) && waterLevel == 1 - InvariantResult [Line: 806]: Loop Invariant Derived loop invariant: ((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || ((!(waterLevel == 1) && pumpRunning == 0) && aux-isMethaneAlarm()-aux == methaneLevelCritical)) && (((!(1 == systemActive) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) || !(methAndRunningLastTime == 0)) RESULT: Ultimate proved your program to be correct! [2022-11-03 01:37:16,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f32a20c6-d357-4d00-b773-ce02dfc5ebc3/bin/utaipan-7li7fVZpFI/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 Result: TRUE