./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product46.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product46.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS --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 02fb1fa00f2030f7900be70496baf2f4c44344da378fa11ef09f1f26dc14ae9d --- 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-8393723 [2022-11-19 07:05:01,708 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:05:01,711 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:05:01,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:05:01,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:05:01,746 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:05:01,749 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:05:01,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:05:01,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:05:01,767 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:05:01,768 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:05:01,770 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:05:01,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:05:01,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:05:01,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:05:01,777 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:05:01,780 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:05:01,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:05:01,789 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:05:01,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:05:01,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:05:01,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:05:01,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:05:01,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:05:01,799 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:05:01,799 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:05:01,799 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:05:01,800 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:05:01,801 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:05:01,801 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:05:01,802 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:05:01,802 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:05:01,803 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:05:01,804 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:05:01,809 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:05:01,810 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:05:01,811 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:05:01,811 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:05:01,811 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:05:01,812 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:05:01,813 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:05:01,814 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:05:01,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:05:01,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:05:01,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:05:01,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:05:01,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:05:01,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:05:01,856 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:05:01,856 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:05:01,856 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:05:01,856 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:05:01,862 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:05:01,862 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:05:01,863 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:05:01,863 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:05:01,863 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:05:01,863 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:05:01,863 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:05:01,863 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:05:01,864 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:05:01,864 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:05:01,865 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:05:01,865 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:05:01,865 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:05:01,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:05:01,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:05:01,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:05:01,867 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:05:01,867 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:05:01,868 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:05:01,868 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:05:01,868 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:05:01,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:05:01,869 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:05:01,869 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:05:01,869 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:05:01,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:05:01,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:05:01,870 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:05:01,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:05:01,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:05:01,870 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:05:01,870 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_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02fb1fa00f2030f7900be70496baf2f4c44344da378fa11ef09f1f26dc14ae9d [2022-11-19 07:05:02,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:05:02,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:05:02,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:05:02,191 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:05:02,192 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:05:02,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/minepump_spec2_product46.cil.c [2022-11-19 07:05:02,297 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/data/031f731c6/86735631d7484bc7bce8103ca9d22f89/FLAG1338db1bf [2022-11-19 07:05:02,931 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:05:02,932 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/sv-benchmarks/c/product-lines/minepump_spec2_product46.cil.c [2022-11-19 07:05:02,943 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/data/031f731c6/86735631d7484bc7bce8103ca9d22f89/FLAG1338db1bf [2022-11-19 07:05:03,198 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/data/031f731c6/86735631d7484bc7bce8103ca9d22f89 [2022-11-19 07:05:03,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:05:03,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:05:03,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:05:03,214 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:05:03,218 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:05:03,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:05:03" (1/1) ... [2022-11-19 07:05:03,221 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77e544ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:03, skipping insertion in model container [2022-11-19 07:05:03,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:05:03" (1/1) ... [2022-11-19 07:05:03,229 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:05:03,272 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:05:03,603 WARN L234 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_e2df162f-d4fe-49c6-970f-adc8ace5bba4/sv-benchmarks/c/product-lines/minepump_spec2_product46.cil.c[17174,17187] [2022-11-19 07:05:03,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:05:03,620 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:05:03,705 WARN L234 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_e2df162f-d4fe-49c6-970f-adc8ace5bba4/sv-benchmarks/c/product-lines/minepump_spec2_product46.cil.c[17174,17187] [2022-11-19 07:05:03,709 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:05:03,734 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:05:03,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:03 WrapperNode [2022-11-19 07:05:03,734 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:05:03,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:05:03,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:05:03,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:05:03,743 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:03" (1/1) ... [2022-11-19 07:05:03,766 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:03" (1/1) ... [2022-11-19 07:05:03,802 INFO L138 Inliner]: procedures = 56, calls = 101, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 193 [2022-11-19 07:05:03,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:05:03,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:05:03,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:05:03,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:05:03,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:03" (1/1) ... [2022-11-19 07:05:03,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:03" (1/1) ... [2022-11-19 07:05:03,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:03" (1/1) ... [2022-11-19 07:05:03,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:03" (1/1) ... [2022-11-19 07:05:03,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:03" (1/1) ... [2022-11-19 07:05:03,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:03" (1/1) ... [2022-11-19 07:05:03,837 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:03" (1/1) ... [2022-11-19 07:05:03,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:03" (1/1) ... [2022-11-19 07:05:03,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:05:03,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:05:03,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:05:03,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:05:03,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:03" (1/1) ... [2022-11-19 07:05:03,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:05:03,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:03,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:05:03,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:05:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:05:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-19 07:05:03,946 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-19 07:05:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 07:05:03,947 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 07:05:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 07:05:03,947 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 07:05:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-19 07:05:03,947 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-19 07:05:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-19 07:05:03,948 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-19 07:05:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-11-19 07:05:03,948 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-11-19 07:05:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-19 07:05:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-19 07:05:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:05:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-19 07:05:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-19 07:05:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:05:03,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:05:04,080 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:05:04,083 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:05:04,591 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:05:04,761 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:05:04,761 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:05:04,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:05:04 BoogieIcfgContainer [2022-11-19 07:05:04,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:05:04,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:05:04,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:05:04,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:05:04,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:05:03" (1/3) ... [2022-11-19 07:05:04,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a74282f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:05:04, skipping insertion in model container [2022-11-19 07:05:04,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:05:03" (2/3) ... [2022-11-19 07:05:04,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a74282f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:05:04, skipping insertion in model container [2022-11-19 07:05:04,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:05:04" (3/3) ... [2022-11-19 07:05:04,781 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product46.cil.c [2022-11-19 07:05:04,803 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:05:04,803 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:05:04,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:05:04,903 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;@5393f8b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:05:04,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:05:04,908 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 40 states have (on average 1.4) internal successors, (56), 48 states have internal predecessors, (56), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2022-11-19 07:05:04,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:05:04,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:04,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:04,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:04,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:04,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1173042195, now seen corresponding path program 1 times [2022-11-19 07:05:04,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:04,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275438564] [2022-11-19 07:05:04,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:04,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:05,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:05,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:05,184 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:05,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275438564] [2022-11-19 07:05:05,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275438564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:05,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:05:05,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:05:05,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625823089] [2022-11-19 07:05:05,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:05,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:05:05,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:05,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:05:05,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:05:05,258 INFO L87 Difference]: Start difference. First operand has 64 states, 40 states have (on average 1.4) internal successors, (56), 48 states have internal predecessors, (56), 14 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) 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) [2022-11-19 07:05:05,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:05,361 INFO L93 Difference]: Finished difference Result 126 states and 169 transitions. [2022-11-19 07:05:05,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:05:05,369 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 [2022-11-19 07:05:05,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:05,379 INFO L225 Difference]: With dead ends: 126 [2022-11-19 07:05:05,379 INFO L226 Difference]: Without dead ends: 59 [2022-11-19 07:05:05,383 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 [2022-11-19 07:05:05,386 INFO L413 NwaCegarLoop]: 64 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, 64 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 [2022-11-19 07:05:05,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:05:05,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-19 07:05:05,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-19 07:05:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 37 states have (on average 1.2972972972972974) internal successors, (48), 44 states have internal predecessors, (48), 14 states have call successors, (14), 8 states have call predecessors, (14), 7 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2022-11-19 07:05:05,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2022-11-19 07:05:05,431 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 17 [2022-11-19 07:05:05,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:05,431 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2022-11-19 07:05:05,432 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) [2022-11-19 07:05:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2022-11-19 07:05:05,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:05:05,434 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:05,434 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:05,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:05:05,435 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:05,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:05,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1353294789, now seen corresponding path program 1 times [2022-11-19 07:05:05,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:05,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433131520] [2022-11-19 07:05:05,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:05,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:05,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:05,597 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:05,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433131520] [2022-11-19 07:05:05,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433131520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:05,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:05:05,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:05:05,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796250696] [2022-11-19 07:05:05,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:05,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:05:05,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:05,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:05:05,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:05:05,605 INFO L87 Difference]: Start difference. First operand 59 states and 75 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) [2022-11-19 07:05:05,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:05,683 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2022-11-19 07:05:05,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:05:05,684 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 [2022-11-19 07:05:05,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:05,685 INFO L225 Difference]: With dead ends: 95 [2022-11-19 07:05:05,685 INFO L226 Difference]: Without dead ends: 51 [2022-11-19 07:05:05,686 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 [2022-11-19 07:05:05,687 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 7 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:05,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 91 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:05:05,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-19 07:05:05,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-19 07:05:05,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.3125) internal successors, (42), 39 states have internal predecessors, (42), 11 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 07:05:05,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2022-11-19 07:05:05,709 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 18 [2022-11-19 07:05:05,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:05,709 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2022-11-19 07:05:05,710 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) [2022-11-19 07:05:05,710 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2022-11-19 07:05:05,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:05:05,711 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:05,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:05,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:05:05,712 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:05,712 INFO L85 PathProgramCache]: Analyzing trace with hash 619708999, now seen corresponding path program 1 times [2022-11-19 07:05:05,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:05,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325586782] [2022-11-19 07:05:05,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:05,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:05,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:05,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325586782] [2022-11-19 07:05:05,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325586782] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:05,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:05:05,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:05:05,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275285494] [2022-11-19 07:05:05,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:05,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:05:05,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:05,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:05:05,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:05:05,953 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-19 07:05:06,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:06,176 INFO L93 Difference]: Finished difference Result 146 states and 186 transitions. [2022-11-19 07:05:06,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:05:06,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 20 [2022-11-19 07:05:06,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:06,179 INFO L225 Difference]: With dead ends: 146 [2022-11-19 07:05:06,179 INFO L226 Difference]: Without dead ends: 97 [2022-11-19 07:05:06,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:05:06,181 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 44 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:06,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 258 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:05:06,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-11-19 07:05:06,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2022-11-19 07:05:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 58 states have (on average 1.293103448275862) internal successors, (75), 70 states have internal predecessors, (75), 21 states have call successors, (21), 13 states have call predecessors, (21), 13 states have return successors, (21), 17 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-19 07:05:06,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 117 transitions. [2022-11-19 07:05:06,200 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 117 transitions. Word has length 20 [2022-11-19 07:05:06,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:06,201 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 117 transitions. [2022-11-19 07:05:06,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-19 07:05:06,201 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 117 transitions. [2022-11-19 07:05:06,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 07:05:06,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:06,203 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:06,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:05:06,203 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:06,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:06,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1973783159, now seen corresponding path program 1 times [2022-11-19 07:05:06,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:06,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222410600] [2022-11-19 07:05:06,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:06,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:06,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:05:06,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:06,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222410600] [2022-11-19 07:05:06,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222410600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:06,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:05:06,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:05:06,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283435567] [2022-11-19 07:05:06,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:06,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:05:06,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:06,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:05:06,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:05:06,269 INFO L87 Difference]: Start difference. First operand 93 states and 117 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (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) [2022-11-19 07:05:06,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:06,329 INFO L93 Difference]: Finished difference Result 142 states and 181 transitions. [2022-11-19 07:05:06,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:05:06,330 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (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 23 [2022-11-19 07:05:06,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:06,332 INFO L225 Difference]: With dead ends: 142 [2022-11-19 07:05:06,333 INFO L226 Difference]: Without dead ends: 140 [2022-11-19 07:05:06,333 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 [2022-11-19 07:05:06,334 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 43 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 107 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 [2022-11-19 07:05:06,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 107 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:05:06,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-19 07:05:06,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-11-19 07:05:06,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 87 states have (on average 1.2988505747126438) internal successors, (113), 105 states have internal predecessors, (113), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (34), 26 states have call predecessors, (34), 32 states have call successors, (34) [2022-11-19 07:05:06,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 179 transitions. [2022-11-19 07:05:06,356 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 179 transitions. Word has length 23 [2022-11-19 07:05:06,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:06,357 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 179 transitions. [2022-11-19 07:05:06,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (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) [2022-11-19 07:05:06,357 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 179 transitions. [2022-11-19 07:05:06,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-19 07:05:06,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:06,360 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] [2022-11-19 07:05:06,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:05:06,360 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:06,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:06,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1579255446, now seen corresponding path program 1 times [2022-11-19 07:05:06,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:06,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231948652] [2022-11-19 07:05:06,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:06,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-19 07:05:06,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:06,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231948652] [2022-11-19 07:05:06,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231948652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:06,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940349533] [2022-11-19 07:05:06,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:06,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:06,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:06,773 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:05:06,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:05:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:06,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:05:06,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:07,003 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:05:07,003 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:05:07,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1940349533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:07,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:05:07,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 14 [2022-11-19 07:05:07,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317973619] [2022-11-19 07:05:07,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:07,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:05:07,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:07,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:05:07,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:05:07,006 INFO L87 Difference]: Start difference. First operand 140 states and 179 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:05:07,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:07,090 INFO L93 Difference]: Finished difference Result 278 states and 361 transitions. [2022-11-19 07:05:07,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:05:07,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2022-11-19 07:05:07,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:07,093 INFO L225 Difference]: With dead ends: 278 [2022-11-19 07:05:07,093 INFO L226 Difference]: Without dead ends: 140 [2022-11-19 07:05:07,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:05:07,095 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 57 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:07,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 65 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:05:07,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-19 07:05:07,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2022-11-19 07:05:07,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 87 states have (on average 1.264367816091954) internal successors, (110), 105 states have internal predecessors, (110), 32 states have call successors, (32), 20 states have call predecessors, (32), 20 states have return successors, (34), 26 states have call predecessors, (34), 32 states have call successors, (34) [2022-11-19 07:05:07,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 176 transitions. [2022-11-19 07:05:07,161 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 176 transitions. Word has length 42 [2022-11-19 07:05:07,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:07,161 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 176 transitions. [2022-11-19 07:05:07,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:05:07,162 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 176 transitions. [2022-11-19 07:05:07,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-19 07:05:07,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:07,164 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 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] [2022-11-19 07:05:07,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-19 07:05:07,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:07,370 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:07,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:07,371 INFO L85 PathProgramCache]: Analyzing trace with hash -925240330, now seen corresponding path program 1 times [2022-11-19 07:05:07,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:07,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461393490] [2022-11-19 07:05:07,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:07,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:07,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:07,548 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:05:07,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:07,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461393490] [2022-11-19 07:05:07,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461393490] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:07,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000175969] [2022-11-19 07:05:07,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:07,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:07,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:07,557 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:05:07,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:05:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:07,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:05:07,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:07,758 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:05:07,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:05:07,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000175969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:07,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:05:07,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 7 [2022-11-19 07:05:07,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123701959] [2022-11-19 07:05:07,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:07,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:05:07,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:07,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:05:07,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:05:07,765 INFO L87 Difference]: Start difference. First operand 140 states and 176 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-19 07:05:08,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:08,108 INFO L93 Difference]: Finished difference Result 497 states and 646 transitions. [2022-11-19 07:05:08,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:05:08,109 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 62 [2022-11-19 07:05:08,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:08,117 INFO L225 Difference]: With dead ends: 497 [2022-11-19 07:05:08,118 INFO L226 Difference]: Without dead ends: 359 [2022-11-19 07:05:08,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:05:08,127 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 126 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:08,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 196 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:05:08,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-19 07:05:08,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 353. [2022-11-19 07:05:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 235 states have (on average 1.2) internal successors, (282), 254 states have internal predecessors, (282), 60 states have call successors, (60), 51 states have call predecessors, (60), 57 states have return successors, (94), 63 states have call predecessors, (94), 60 states have call successors, (94) [2022-11-19 07:05:08,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 436 transitions. [2022-11-19 07:05:08,201 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 436 transitions. Word has length 62 [2022-11-19 07:05:08,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:08,202 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 436 transitions. [2022-11-19 07:05:08,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-19 07:05:08,202 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 436 transitions. [2022-11-19 07:05:08,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-19 07:05:08,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:08,218 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2022-11-19 07:05:08,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:05:08,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:08,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:08,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:08,420 INFO L85 PathProgramCache]: Analyzing trace with hash -558180248, now seen corresponding path program 1 times [2022-11-19 07:05:08,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:08,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078747176] [2022-11-19 07:05:08,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:08,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:08,584 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 17 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 07:05:08,585 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:08,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078747176] [2022-11-19 07:05:08,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078747176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:08,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331269867] [2022-11-19 07:05:08,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:08,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:08,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:08,587 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:05:08,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:05:08,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:08,692 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:05:08,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:08,733 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 07:05:08,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:05:08,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331269867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:08,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:05:08,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-19 07:05:08,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205822282] [2022-11-19 07:05:08,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:08,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:05:08,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:08,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:05:08,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:05:08,736 INFO L87 Difference]: Start difference. First operand 353 states and 436 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:05:08,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:08,869 INFO L93 Difference]: Finished difference Result 583 states and 737 transitions. [2022-11-19 07:05:08,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:05:08,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 64 [2022-11-19 07:05:08,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:08,872 INFO L225 Difference]: With dead ends: 583 [2022-11-19 07:05:08,872 INFO L226 Difference]: Without dead ends: 337 [2022-11-19 07:05:08,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:05:08,889 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 35 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:08,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 157 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:05:08,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-19 07:05:08,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 323. [2022-11-19 07:05:08,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 212 states have (on average 1.1745283018867925) internal successors, (249), 230 states have internal predecessors, (249), 57 states have call successors, (57), 48 states have call predecessors, (57), 53 states have return successors, (81), 58 states have call predecessors, (81), 57 states have call successors, (81) [2022-11-19 07:05:08,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 387 transitions. [2022-11-19 07:05:08,977 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 387 transitions. Word has length 64 [2022-11-19 07:05:08,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:08,977 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 387 transitions. [2022-11-19 07:05:08,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:05:08,977 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 387 transitions. [2022-11-19 07:05:08,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-19 07:05:08,980 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:08,980 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:08,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:05:09,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-19 07:05:09,181 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:09,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:09,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1892726250, now seen corresponding path program 1 times [2022-11-19 07:05:09,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:09,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602739187] [2022-11-19 07:05:09,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:09,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:09,510 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:05:09,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:09,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602739187] [2022-11-19 07:05:09,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602739187] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:09,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050492791] [2022-11-19 07:05:09,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:09,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:09,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:09,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:05:09,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:05:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:09,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-19 07:05:09,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 32 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:05:09,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:05:10,629 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:05:10,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050492791] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:05:10,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1009561286] [2022-11-19 07:05:10,652 INFO L159 IcfgInterpreter]: Started Sifa with 40 locations of interest [2022-11-19 07:05:10,652 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:05:10,656 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:05:10,661 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:05:10,662 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:05:13,627 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 33 for LOIs [2022-11-19 07:05:13,995 INFO L197 IcfgInterpreter]: Interpreting procedure processEnvironment__wrappee__methaneQuery with input of size 29 for LOIs [2022-11-19 07:05:14,110 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneAlarm with input of size 28 for LOIs [2022-11-19 07:05:14,138 INFO L197 IcfgInterpreter]: Interpreting procedure isMethaneLevelCritical with input of size 46 for LOIs [2022-11-19 07:05:14,145 INFO L197 IcfgInterpreter]: Interpreting procedure changeMethaneLevel with input of size 31 for LOIs [2022-11-19 07:05:14,149 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:05:20,557 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5733#(and (= |timeShift_isPumpRunning_#res#1| |timeShift___utac_acc__Specification2_spec__2_~tmp___0~1#1|) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~8#1| ~methaneLevelCritical~0) (not (= |timeShift___utac_acc__Specification2_spec__2_~tmp~8#1| 0)) (= ~head~0.offset 0) (= ~pumpRunning~0 |timeShift_isPumpRunning_~retValue_acc~10#1|) (= 1 ~systemActive~0) (<= |timeShift___utac_acc__Specification2_spec__2_~tmp~8#1| 1) (= |old(~pumpRunning~0)| 0) (<= 2 |old(~waterLevel~0)|) (<= 0 |old(~methAndRunningLastTime~0)|) (= |timeShift_isPumpRunning_#res#1| |timeShift_isPumpRunning_~retValue_acc~10#1|) (= |old(~waterLevel~0)| ~waterLevel~0) (= ~head~0.base 0) (<= 0 |timeShift___utac_acc__Specification2_spec__2_~tmp~8#1|) (= |#NULL.offset| 0) (= |old(~methAndRunningLastTime~0)| ~methAndRunningLastTime~0) (not (= ~methAndRunningLastTime~0 0)) (<= 0 |#StackHeapBarrier|) (= ~pumpRunning~0 1) (= ~cleanupTimeShifts~0 4) (= |#NULL.base| 0))' at error location [2022-11-19 07:05:20,558 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 07:05:20,559 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:05:20,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 13] total 31 [2022-11-19 07:05:20,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407397237] [2022-11-19 07:05:20,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 07:05:20,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-19 07:05:20,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:20,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-19 07:05:20,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=3410, Unknown=0, NotChecked=0, Total=3782 [2022-11-19 07:05:20,564 INFO L87 Difference]: Start difference. First operand 323 states and 387 transitions. Second operand has 31 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 22 states have internal predecessors, (100), 10 states have call successors, (22), 6 states have call predecessors, (22), 14 states have return successors, (24), 15 states have call predecessors, (24), 10 states have call successors, (24) [2022-11-19 07:05:28,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:28,207 INFO L93 Difference]: Finished difference Result 1118 states and 1384 transitions. [2022-11-19 07:05:28,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-11-19 07:05:28,208 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 22 states have internal predecessors, (100), 10 states have call successors, (22), 6 states have call predecessors, (22), 14 states have return successors, (24), 15 states have call predecessors, (24), 10 states have call successors, (24) Word has length 74 [2022-11-19 07:05:28,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:28,212 INFO L225 Difference]: With dead ends: 1118 [2022-11-19 07:05:28,213 INFO L226 Difference]: Without dead ends: 769 [2022-11-19 07:05:28,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 197 SyntacticMatches, 4 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13031 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=2939, Invalid=31471, Unknown=0, NotChecked=0, Total=34410 [2022-11-19 07:05:28,224 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 1117 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 3930 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 4659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 3930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:28,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 1217 Invalid, 4659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 3930 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-19 07:05:28,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-11-19 07:05:28,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 714. [2022-11-19 07:05:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 474 states have (on average 1.1350210970464134) internal successors, (538), 510 states have internal predecessors, (538), 126 states have call successors, (126), 96 states have call predecessors, (126), 113 states have return successors, (172), 125 states have call predecessors, (172), 126 states have call successors, (172) [2022-11-19 07:05:28,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 836 transitions. [2022-11-19 07:05:28,309 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 836 transitions. Word has length 74 [2022-11-19 07:05:28,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:28,309 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 836 transitions. [2022-11-19 07:05:28,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 22 states have internal predecessors, (100), 10 states have call successors, (22), 6 states have call predecessors, (22), 14 states have return successors, (24), 15 states have call predecessors, (24), 10 states have call successors, (24) [2022-11-19 07:05:28,310 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 836 transitions. [2022-11-19 07:05:28,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-19 07:05:28,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:05:28,314 INFO L195 NwaCegarLoop]: trace histogram [6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-19 07:05:28,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:05:28,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 07:05:28,521 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:05:28,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:05:28,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1602679000, now seen corresponding path program 1 times [2022-11-19 07:05:28,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:05:28,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941109611] [2022-11-19 07:05:28,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:28,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:05:28,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:28,932 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 47 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-11-19 07:05:28,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:05:28,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941109611] [2022-11-19 07:05:28,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941109611] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:05:28,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043523696] [2022-11-19 07:05:28,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:05:28,933 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:28,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:05:28,934 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:05:28,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:05:29,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:05:29,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-19 07:05:29,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:05:29,242 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-19 07:05:29,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:05:29,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043523696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:05:29,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:05:29,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 19 [2022-11-19 07:05:29,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346281399] [2022-11-19 07:05:29,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:05:29,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 07:05:29,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:05:29,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 07:05:29,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:05:29,244 INFO L87 Difference]: Start difference. First operand 714 states and 836 transitions. Second operand has 11 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2022-11-19 07:05:29,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:05:29,704 INFO L93 Difference]: Finished difference Result 1161 states and 1374 transitions. [2022-11-19 07:05:29,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-19 07:05:29,705 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 116 [2022-11-19 07:05:29,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:05:29,706 INFO L225 Difference]: With dead ends: 1161 [2022-11-19 07:05:29,707 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:05:29,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=621, Unknown=0, NotChecked=0, Total=702 [2022-11-19 07:05:29,710 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 41 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:05:29,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 537 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:05:29,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:05:29,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:05:29,711 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) [2022-11-19 07:05:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:05:29,711 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 116 [2022-11-19 07:05:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:05:29,711 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:05:29,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2022-11-19 07:05:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:05:29,712 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:05:29,715 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:05:29,736 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:05:29,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:05:29,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 07:05:35,179 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 688 694) no Hoare annotation was computed. [2022-11-19 07:05:35,180 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 688 694) the Hoare annotation is: true [2022-11-19 07:05:35,180 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 487 498) the Hoare annotation is: (let ((.cse5 (= ~methaneLevelCritical~0 0))) (let ((.cse2 (not .cse5)) (.cse4 (= ~pumpRunning~0 0)) (.cse1 (= |old(~methaneLevelCritical~0)| 0)) (.cse0 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse0 .cse1 .cse2) (or .cse4 (not .cse1) .cse5 .cse0 .cse3)))) [2022-11-19 07:05:35,181 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 487 498) no Hoare annotation was computed. [2022-11-19 07:05:35,181 INFO L899 garLoopResultBuilder]: For program point L894(lines 894 904) no Hoare annotation was computed. [2022-11-19 07:05:35,181 INFO L895 garLoopResultBuilder]: At program point L890(lines 890 907) the Hoare annotation is: (let ((.cse8 (= |old(~pumpRunning~0)| 0))) (let ((.cse3 (= ~pumpRunning~0 0)) (.cse4 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~8#1| ~methaneLevelCritical~0)) (.cse0 (not .cse8)) (.cse5 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= 1 ~systemActive~0))) (.cse6 (= ~methaneLevelCritical~0 0))) (and (or .cse0 .cse1 .cse2 (and .cse3 .cse4 (or .cse5 (= ~waterLevel~0 1))) (and .cse4 .cse6 (<= 2 ~waterLevel~0) .cse5)) (let ((.cse7 (or (not (= |old(~waterLevel~0)| 1)) (<= ~waterLevel~0 1)))) (or (and .cse3 (not (= |timeShift_processEnvironment_~tmp~5#1| 0)) .cse4 .cse7) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse4 .cse6 .cse7) .cse2 .cse8)) (or .cse0 .cse1 .cse2 .cse5 (not (<= 2 |old(~waterLevel~0)|))) (or .cse1 (= ~methAndRunningLastTime~0 0) .cse2 (not .cse6))))) [2022-11-19 07:05:35,182 INFO L895 garLoopResultBuilder]: At program point L890-1(lines 882 910) the Hoare annotation is: (let ((.cse9 (= 1 ~systemActive~0)) (.cse10 (= |old(~pumpRunning~0)| 0))) (let ((.cse3 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~8#1| ~methaneLevelCritical~0)) (.cse0 (not .cse10)) (.cse5 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse4 (= ~methaneLevelCritical~0 0)) (.cse6 (not .cse9)) (.cse7 (= ~pumpRunning~0 0)) (.cse2 (= ~methAndRunningLastTime~0 0)) (.cse11 (= |timeShift___utac_acc__Specification2_spec__2_~tmp___0~1#1| 0))) (and (or .cse0 .cse1 (and .cse2 .cse3 .cse4 (<= 2 ~waterLevel~0) .cse5) .cse6 (and .cse7 .cse2 .cse3 (or .cse5 (= ~waterLevel~0 1)))) (let ((.cse8 (or (not (= |old(~waterLevel~0)| 1)) (<= ~waterLevel~0 1)))) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse2 .cse3 .cse8) .cse6 (and .cse7 .cse2 (not (= |timeShift_processEnvironment_~tmp~5#1| 0)) .cse3 .cse9 .cse8) .cse10)) (or .cse0 .cse1 .cse6 .cse5 (not (<= 2 |old(~waterLevel~0)|))) (or .cse1 .cse4 .cse6 .cse11) (or .cse4 .cse6 (and .cse7 .cse2 .cse9 .cse11) .cse10)))) [2022-11-19 07:05:35,182 INFO L899 garLoopResultBuilder]: For program point L895(lines 895 901) no Hoare annotation was computed. [2022-11-19 07:05:35,182 INFO L899 garLoopResultBuilder]: For program point L668-1(lines 667 686) no Hoare annotation was computed. [2022-11-19 07:05:35,182 INFO L895 garLoopResultBuilder]: At program point L730(lines 730 738) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= |old(~pumpRunning~0)| 0))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1) (or .cse1 .cse2 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (not (= |old(~waterLevel~0)| 1)) (<= ~waterLevel~0 1)))) (or (not .cse2) .cse0 .cse1) (or (not (= |timeShift_processEnvironment_~tmp~5#1| 0)) (= ~methaneLevelCritical~0 0) .cse1 .cse2))) [2022-11-19 07:05:35,182 INFO L899 garLoopResultBuilder]: For program point L726(lines 726 743) no Hoare annotation was computed. [2022-11-19 07:05:35,183 INFO L895 garLoopResultBuilder]: At program point L888(line 888) the Hoare annotation is: (let ((.cse4 (= |old(~pumpRunning~0)| 0)) (.cse8 (= ~pumpRunning~0 0)) (.cse5 (or (not (= |old(~waterLevel~0)| 1)) (<= ~waterLevel~0 1)))) (let ((.cse3 (and .cse8 (not (= |timeShift_processEnvironment_~tmp~5#1| 0)) .cse5)) (.cse6 (not .cse4)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= ~methaneLevelCritical~0 0)) (.cse7 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1) (or .cse2 .cse1 .cse3 .cse4) (or .cse1 .cse3 .cse4 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse5)) (or .cse6 .cse0 .cse1 .cse7 (not (<= 2 |old(~waterLevel~0)|))) (or .cse6 .cse0 .cse1 (and .cse2 (<= 2 ~waterLevel~0) .cse7) (and .cse8 (or .cse7 (= ~waterLevel~0 1))))))) [2022-11-19 07:05:35,183 INFO L899 garLoopResultBuilder]: For program point L888-1(line 888) no Hoare annotation was computed. [2022-11-19 07:05:35,183 INFO L895 garLoopResultBuilder]: At program point L868(line 868) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 (= |old(~pumpRunning~0)| 0)) (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0))) [2022-11-19 07:05:35,183 INFO L895 garLoopResultBuilder]: At program point L736(line 736) the Hoare annotation is: (let ((.cse2 (= |old(~pumpRunning~0)| 0)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1) (or .cse1 .cse2 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (not (= |old(~waterLevel~0)| 1)) (<= ~waterLevel~0 1)))) (or (= ~methaneLevelCritical~0 0) .cse1 .cse2) (or (not .cse2) .cse0 .cse1))) [2022-11-19 07:05:35,184 INFO L895 garLoopResultBuilder]: At program point L728(line 728) the Hoare annotation is: (let ((.cse2 (= |old(~pumpRunning~0)| 0)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1) (or .cse1 .cse2 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (or (not (= |old(~waterLevel~0)| 1)) (<= ~waterLevel~0 1)))) (or (not .cse2) .cse0 .cse1))) [2022-11-19 07:05:35,184 INFO L899 garLoopResultBuilder]: For program point L728-1(line 728) no Hoare annotation was computed. [2022-11-19 07:05:35,184 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 664 687) the Hoare annotation is: (let ((.cse4 (= |old(~waterLevel~0)| ~waterLevel~0))) (let ((.cse0 (= |old(~pumpRunning~0)| 0)) (.cse3 (or .cse4 (= ~waterLevel~0 1))) (.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse2 (not (= 1 ~systemActive~0)))) (and (or (not .cse0) .cse1 .cse2 (and (= ~pumpRunning~0 0) .cse3)) (or .cse2 .cse0 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse3)) (or .cse1 (= ~methAndRunningLastTime~0 0) .cse2) (or .cse1 .cse2 .cse4 (not (<= 2 |old(~waterLevel~0)|)))))) [2022-11-19 07:05:35,184 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 664 687) no Hoare annotation was computed. [2022-11-19 07:05:35,185 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 868) no Hoare annotation was computed. [2022-11-19 07:05:35,185 INFO L895 garLoopResultBuilder]: At program point L741(line 741) the Hoare annotation is: (let ((.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse2 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 (= |old(~pumpRunning~0)| 0)) (or .cse1 .cse0 (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (or .cse2 (= ~waterLevel~0 1)))) (or .cse1 .cse0 .cse2 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-19 07:05:35,185 INFO L895 garLoopResultBuilder]: At program point L741-1(lines 722 746) the Hoare annotation is: (let ((.cse4 (= |old(~pumpRunning~0)| 0)) (.cse8 (= ~pumpRunning~0 0)) (.cse5 (or (not (= |old(~waterLevel~0)| 1)) (<= ~waterLevel~0 1)))) (let ((.cse3 (and .cse8 (not (= |timeShift_processEnvironment_~tmp~5#1| 0)) .cse5)) (.cse6 (not .cse4)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= ~methaneLevelCritical~0 0)) (.cse7 (= |old(~waterLevel~0)| ~waterLevel~0))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1) (or .cse2 .cse1 .cse3 .cse4) (or .cse1 .cse3 .cse4 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse5)) (or .cse6 .cse0 .cse1 .cse7 (not (<= 2 |old(~waterLevel~0)|))) (or .cse6 .cse0 .cse1 (and .cse2 (<= 2 ~waterLevel~0) .cse7) (and .cse8 (or .cse7 (= ~waterLevel~0 1))))))) [2022-11-19 07:05:35,185 INFO L899 garLoopResultBuilder]: For program point L675-1(lines 675 681) no Hoare annotation was computed. [2022-11-19 07:05:35,186 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 557 586) no Hoare annotation was computed. [2022-11-19 07:05:35,186 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 557 586) the Hoare annotation is: true [2022-11-19 07:05:35,186 INFO L899 garLoopResultBuilder]: For program point L571(lines 571 575) no Hoare annotation was computed. [2022-11-19 07:05:35,186 INFO L902 garLoopResultBuilder]: At program point L571-1(lines 571 575) the Hoare annotation is: true [2022-11-19 07:05:35,186 INFO L902 garLoopResultBuilder]: At program point L567-2(lines 567 581) the Hoare annotation is: true [2022-11-19 07:05:35,186 INFO L902 garLoopResultBuilder]: At program point L563(line 563) the Hoare annotation is: true [2022-11-19 07:05:35,187 INFO L899 garLoopResultBuilder]: For program point L563-1(line 563) no Hoare annotation was computed. [2022-11-19 07:05:35,187 INFO L902 garLoopResultBuilder]: At program point L582(lines 557 586) the Hoare annotation is: true [2022-11-19 07:05:35,187 INFO L899 garLoopResultBuilder]: For program point L578(line 578) no Hoare annotation was computed. [2022-11-19 07:05:35,187 INFO L902 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 499 507) the Hoare annotation is: true [2022-11-19 07:05:35,187 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 499 507) no Hoare annotation was computed. [2022-11-19 07:05:35,187 INFO L902 garLoopResultBuilder]: At program point L642-2(lines 642 649) the Hoare annotation is: true [2022-11-19 07:05:35,188 INFO L895 garLoopResultBuilder]: At program point L960-2(lines 952 965) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~3#1| 1))) (or (and (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2) (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2))) [2022-11-19 07:05:35,188 INFO L899 garLoopResultBuilder]: For program point L923(lines 922 969) no Hoare annotation was computed. [2022-11-19 07:05:35,188 INFO L895 garLoopResultBuilder]: At program point L944(line 944) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~3#1| 1))) (or (and (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2) (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2))) [2022-11-19 07:05:35,188 INFO L902 garLoopResultBuilder]: At program point L973(lines 912 977) the Hoare annotation is: true [2022-11-19 07:05:35,188 INFO L899 garLoopResultBuilder]: For program point L932(lines 932 938) no Hoare annotation was computed. [2022-11-19 07:05:35,189 INFO L899 garLoopResultBuilder]: For program point L932-1(lines 932 938) no Hoare annotation was computed. [2022-11-19 07:05:35,189 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-19 07:05:35,189 INFO L895 garLoopResultBuilder]: At program point L970(lines 921 971) the Hoare annotation is: false [2022-11-19 07:05:35,189 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 07:05:35,189 INFO L899 garLoopResultBuilder]: For program point L942(lines 942 948) no Hoare annotation was computed. [2022-11-19 07:05:35,189 INFO L895 garLoopResultBuilder]: At program point L942-1(lines 942 948) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~3#1| 1))) (or (and (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2) (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2))) [2022-11-19 07:05:35,190 INFO L895 garLoopResultBuilder]: At program point L967(lines 922 969) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~3#1| 1))) (or (and (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2) (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2))) [2022-11-19 07:05:35,190 INFO L895 garLoopResultBuilder]: At program point L934(line 934) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~3#1| 1))) (or (and (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2) (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2))) [2022-11-19 07:05:35,190 INFO L895 garLoopResultBuilder]: At program point L642(lines 642 649) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= ~methaneLevelCritical~0 0) (= 1 ~systemActive~0) (= |ULTIMATE.start_main_~tmp~3#1| 1) (= ~waterLevel~0 1)) [2022-11-19 07:05:35,190 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 475 486) no Hoare annotation was computed. [2022-11-19 07:05:35,191 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 475 486) the Hoare annotation is: (let ((.cse4 (= ~waterLevel~0 1)) (.cse0 (= ~pumpRunning~0 0)) (.cse1 (= ~methaneLevelCritical~0 0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse3 (= |old(~waterLevel~0)| ~waterLevel~0)) (.cse5 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or .cse2 .cse3 .cse4 .cse5) (or (and (not .cse0) (not .cse1)) .cse2 .cse3 .cse5 (not (<= 2 |old(~waterLevel~0)|))))) [2022-11-19 07:05:35,191 INFO L899 garLoopResultBuilder]: For program point L704(lines 704 712) no Hoare annotation was computed. [2022-11-19 07:05:35,191 INFO L895 garLoopResultBuilder]: At program point L700(lines 700 717) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= ~methAndRunningLastTime~0 0))) (or .cse0 .cse1 (= |old(~pumpRunning~0)| 0) (not (= ~methaneLevelCritical~0 0))))) [2022-11-19 07:05:35,191 INFO L895 garLoopResultBuilder]: At program point L760(line 760) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= |old(~pumpRunning~0)| 0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))) (or .cse0 (and (= ~pumpRunning~0 0) (<= 2 ~waterLevel~0)) .cse2) (or .cse0 .cse1 .cse2))) [2022-11-19 07:05:35,192 INFO L895 garLoopResultBuilder]: At program point L760-1(line 760) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse2 (= |old(~pumpRunning~0)| 0)) (.cse1 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 (and (= ~pumpRunning~0 0) (<= 2 ~waterLevel~0) (= |processEnvironment__wrappee__methaneQuery_activatePump_#t~ret36#1| ~methaneLevelCritical~0)) .cse1) (or .cse0 .cse2 (not (= ~methaneLevelCritical~0 0))) (or .cse0 .cse2 .cse1))) [2022-11-19 07:05:35,192 INFO L895 garLoopResultBuilder]: At program point L715(line 715) the Hoare annotation is: (let ((.cse2 (not (= ~methAndRunningLastTime~0 0))) (.cse3 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) .cse1 .cse2) (or .cse3 .cse1 .cse2) (or .cse3 .cse1 .cse0 (not (= ~methaneLevelCritical~0 0))))) [2022-11-19 07:05:35,192 INFO L899 garLoopResultBuilder]: For program point L715-1(lines 696 720) no Hoare annotation was computed. [2022-11-19 07:05:35,192 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 696 720) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= ~methAndRunningLastTime~0 0))) (or .cse0 .cse1 (= |old(~pumpRunning~0)| 0) (not (= ~methaneLevelCritical~0 0))))) [2022-11-19 07:05:35,192 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 696 720) no Hoare annotation was computed. [2022-11-19 07:05:35,193 INFO L895 garLoopResultBuilder]: At program point L710(line 710) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= |old(~pumpRunning~0)| 0)) (.cse2 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))) (or .cse0 (and (= ~pumpRunning~0 0) (or (<= 2 ~waterLevel~0) (= |processEnvironment__wrappee__methaneQuery_~tmp~4#1| 0))) .cse2) (or .cse0 .cse1 .cse2))) [2022-11-19 07:05:35,193 INFO L902 garLoopResultBuilder]: At program point L785(line 785) the Hoare annotation is: true [2022-11-19 07:05:35,193 INFO L899 garLoopResultBuilder]: For program point L785-1(line 785) no Hoare annotation was computed. [2022-11-19 07:05:35,193 INFO L902 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 780 790) the Hoare annotation is: true [2022-11-19 07:05:35,193 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 780 790) no Hoare annotation was computed. [2022-11-19 07:05:35,197 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:05:35,199 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:05:35,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:05:35 BoogieIcfgContainer [2022-11-19 07:05:35,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:05:35,223 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:05:35,223 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:05:35,223 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:05:35,224 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:05:04" (3/4) ... [2022-11-19 07:05:35,227 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:05:35,232 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-19 07:05:35,233 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-19 07:05:35,233 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-19 07:05:35,233 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-19 07:05:35,233 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-11-19 07:05:35,233 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-19 07:05:35,234 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2022-11-19 07:05:35,234 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2022-11-19 07:05:35,240 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2022-11-19 07:05:35,241 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-19 07:05:35,241 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-19 07:05:35,242 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:05:35,242 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:05:35,267 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || (pumpRunning == 0 && (\old(waterLevel) == waterLevel || waterLevel == 1))) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && (\old(waterLevel) == waterLevel || waterLevel == 1)))) && ((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive))) && (((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel))) [2022-11-19 07:05:35,268 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) && (((methaneLevelCritical == 0 || !(1 == systemActive)) || ((pumpRunning == 0 && !(tmp == 0)) && (!(\old(waterLevel) == 1) || waterLevel <= 1))) || \old(pumpRunning) == 0)) && (((!(1 == systemActive) || ((pumpRunning == 0 && !(tmp == 0)) && (!(\old(waterLevel) == 1) || waterLevel <= 1))) || \old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && (!(\old(waterLevel) == 1) || waterLevel <= 1)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((methaneLevelCritical == 0 && 2 <= waterLevel) && \old(waterLevel) == waterLevel)) || (pumpRunning == 0 && (\old(waterLevel) == waterLevel || waterLevel == 1))) [2022-11-19 07:05:35,269 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(methAndRunningLastTime == 0)) && (((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) [2022-11-19 07:05:35,269 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && (!(\old(waterLevel) == 1) || waterLevel <= 1)))) && ((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive))) && (((!(tmp == 0) || methaneLevelCritical == 0) || !(1 == systemActive)) || \old(pumpRunning) == 0) [2022-11-19 07:05:35,269 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && tmp == methaneLevelCritical) && (\old(waterLevel) == waterLevel || waterLevel == 1))) || (((tmp == methaneLevelCritical && methaneLevelCritical == 0) && 2 <= waterLevel) && \old(waterLevel) == waterLevel)) && ((((((pumpRunning == 0 && !(tmp == 0)) && tmp == methaneLevelCritical) && (!(\old(waterLevel) == 1) || waterLevel <= 1)) || (((pumpRunning == \old(pumpRunning) && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && (!(\old(waterLevel) == 1) || waterLevel <= 1))) || !(1 == systemActive)) || \old(pumpRunning) == 0)) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel)))) && (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) [2022-11-19 07:05:35,270 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || ((((methAndRunningLastTime == 0 && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && 2 <= waterLevel) && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && (\old(waterLevel) == waterLevel || waterLevel == 1))) && ((((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && (!(\old(waterLevel) == 1) || waterLevel <= 1)) || !(1 == systemActive)) || (((((pumpRunning == 0 && methAndRunningLastTime == 0) && !(tmp == 0)) && tmp == methaneLevelCritical) && 1 == systemActive) && (!(\old(waterLevel) == 1) || waterLevel <= 1))) || \old(pumpRunning) == 0)) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel)))) && (((!(\old(methAndRunningLastTime) == 0) || methaneLevelCritical == 0) || !(1 == systemActive)) || tmp___0 == 0)) && (((methaneLevelCritical == 0 || !(1 == systemActive)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && tmp___0 == 0)) || \old(pumpRunning) == 0) [2022-11-19 07:05:35,270 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(1 == systemActive) || ((pumpRunning == 0 && 2 <= waterLevel) && aux-isMethaneAlarm()-aux == methaneLevelCritical)) || !(methAndRunningLastTime == 0)) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0))) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || !(methAndRunningLastTime == 0)) [2022-11-19 07:05:35,271 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(1 == systemActive) || \old(pumpRunning) == 0) && (!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) [2022-11-19 07:05:35,316 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:05:35,317 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:05:35,317 INFO L158 Benchmark]: Toolchain (without parser) took 32109.42ms. Allocated memory was 163.6MB in the beginning and 425.7MB in the end (delta: 262.1MB). Free memory was 130.0MB in the beginning and 289.3MB in the end (delta: -159.3MB). Peak memory consumption was 102.1MB. Max. memory is 16.1GB. [2022-11-19 07:05:35,318 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 100.7MB. Free memory was 56.1MB in the beginning and 56.1MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:05:35,318 INFO L158 Benchmark]: CACSL2BoogieTranslator took 521.18ms. Allocated memory is still 163.6MB. Free memory was 129.7MB in the beginning and 131.9MB in the end (delta: -2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:05:35,318 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.43ms. Allocated memory is still 163.6MB. Free memory was 131.9MB in the beginning and 129.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:05:35,319 INFO L158 Benchmark]: Boogie Preprocessor took 51.40ms. Allocated memory is still 163.6MB. Free memory was 129.8MB in the beginning and 127.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:05:35,319 INFO L158 Benchmark]: RCFGBuilder took 908.30ms. Allocated memory is still 163.6MB. Free memory was 127.9MB in the beginning and 103.7MB in the end (delta: 24.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-19 07:05:35,319 INFO L158 Benchmark]: TraceAbstraction took 30455.85ms. Allocated memory was 163.6MB in the beginning and 425.7MB in the end (delta: 262.1MB). Free memory was 102.9MB in the beginning and 294.5MB in the end (delta: -191.6MB). Peak memory consumption was 222.4MB. Max. memory is 16.1GB. [2022-11-19 07:05:35,320 INFO L158 Benchmark]: Witness Printer took 93.78ms. Allocated memory is still 425.7MB. Free memory was 294.5MB in the beginning and 289.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:05:35,322 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 100.7MB. Free memory was 56.1MB in the beginning and 56.1MB in the end (delta: 76.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 521.18ms. Allocated memory is still 163.6MB. Free memory was 129.7MB in the beginning and 131.9MB in the end (delta: -2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.43ms. Allocated memory is still 163.6MB. Free memory was 131.9MB in the beginning and 129.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.40ms. Allocated memory is still 163.6MB. Free memory was 129.8MB in the beginning and 127.9MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 908.30ms. Allocated memory is still 163.6MB. Free memory was 127.9MB in the beginning and 103.7MB in the end (delta: 24.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 30455.85ms. Allocated memory was 163.6MB in the beginning and 425.7MB in the end (delta: 262.1MB). Free memory was 102.9MB in the beginning and 294.5MB in the end (delta: -191.6MB). Peak memory consumption was 222.4MB. Max. memory is 16.1GB. * Witness Printer took 93.78ms. Allocated memory is still 425.7MB. Free memory was 294.5MB in the beginning and 289.3MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 868]: 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 9 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.3s, OverallIterations: 9, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 9.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1495 SdHoareTripleChecker+Valid, 3.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1470 mSDsluCounter, 2692 SdHoareTripleChecker+Invalid, 2.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2075 mSDsCounter, 800 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4784 IncrementalHoareTripleChecker+Invalid, 5584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 800 mSolverCounterUnsat, 617 mSDtfsCounter, 4784 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 736 GetRequests, 491 SyntacticMatches, 5 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13113 ImplicationChecksByTransitivity, 12.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=714occurred in iteration=8, InterpolantAutomatonStates: 184, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 79 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 1281 PreInvPairs, 1529 NumberOfFragments, 1361 HoareAnnotationTreeSize, 1281 FomulaSimplifications, 2651 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 37 FomulaSimplificationsInter, 17305 FormulaSimplificationTreeSizeReductionInter, 4.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 794 NumberOfCodeBlocks, 794 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 853 ConstructedInterpolants, 0 QuantifiedInterpolants, 1730 SizeOfPredicates, 27 NumberOfNonLiveVariables, 1572 ConjunctsInSsa, 102 ConjunctsInUnsatCore, 15 InterpolantComputations, 8 PerfectInterpolantSequences, 450/487 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: 882]: Loop Invariant Derived loop invariant: (((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || ((((methAndRunningLastTime == 0 && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && 2 <= waterLevel) && \old(waterLevel) == waterLevel)) || !(1 == systemActive)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && (\old(waterLevel) == waterLevel || waterLevel == 1))) && ((((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && tmp == methaneLevelCritical) && (!(\old(waterLevel) == 1) || waterLevel <= 1)) || !(1 == systemActive)) || (((((pumpRunning == 0 && methAndRunningLastTime == 0) && !(tmp == 0)) && tmp == methaneLevelCritical) && 1 == systemActive) && (!(\old(waterLevel) == 1) || waterLevel <= 1))) || \old(pumpRunning) == 0)) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel)))) && (((!(\old(methAndRunningLastTime) == 0) || methaneLevelCritical == 0) || !(1 == systemActive)) || tmp___0 == 0)) && (((methaneLevelCritical == 0 || !(1 == systemActive)) || (((pumpRunning == 0 && methAndRunningLastTime == 0) && 1 == systemActive) && tmp___0 == 0)) || \old(pumpRunning) == 0) - InvariantResult [Line: 730]: Loop Invariant Derived loop invariant: ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && (!(\old(waterLevel) == 1) || waterLevel <= 1)))) && ((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive))) && (((!(tmp == 0) || methaneLevelCritical == 0) || !(1 == systemActive)) || \old(pumpRunning) == 0) - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 700]: Loop Invariant Derived loop invariant: ((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || !(methAndRunningLastTime == 0)) && (((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) - InvariantResult [Line: 642]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 921]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 664]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || (pumpRunning == 0 && (\old(waterLevel) == waterLevel || waterLevel == 1))) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && (\old(waterLevel) == waterLevel || waterLevel == 1)))) && ((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive))) && (((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel))) - InvariantResult [Line: 868]: Loop Invariant Derived loop invariant: (!(1 == systemActive) || \old(pumpRunning) == 0) && (!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) - InvariantResult [Line: 760]: Loop Invariant Derived loop invariant: (((!(1 == systemActive) || ((pumpRunning == 0 && 2 <= waterLevel) && aux-isMethaneAlarm()-aux == methaneLevelCritical)) || !(methAndRunningLastTime == 0)) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0))) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 922]: Loop Invariant Derived loop invariant: ((((!(pumpRunning == 0) && 1 == systemActive) && !(methaneLevelCritical == 0)) && splverifierCounter == 0) && tmp == 1) || (((methAndRunningLastTime == 0 && 1 == systemActive) && splverifierCounter == 0) && tmp == 1) - InvariantResult [Line: 722]: Loop Invariant Derived loop invariant: (((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) && (((methaneLevelCritical == 0 || !(1 == systemActive)) || ((pumpRunning == 0 && !(tmp == 0)) && (!(\old(waterLevel) == 1) || waterLevel <= 1))) || \old(pumpRunning) == 0)) && (((!(1 == systemActive) || ((pumpRunning == 0 && !(tmp == 0)) && (!(\old(waterLevel) == 1) || waterLevel <= 1))) || \old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && (!(\old(waterLevel) == 1) || waterLevel <= 1)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel)))) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((methaneLevelCritical == 0 && 2 <= waterLevel) && \old(waterLevel) == waterLevel)) || (pumpRunning == 0 && (\old(waterLevel) == waterLevel || waterLevel == 1))) - InvariantResult [Line: 567]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 642]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && 1 == systemActive) && tmp == 1) && waterLevel == 1 - InvariantResult [Line: 890]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((pumpRunning == 0 && tmp == methaneLevelCritical) && (\old(waterLevel) == waterLevel || waterLevel == 1))) || (((tmp == methaneLevelCritical && methaneLevelCritical == 0) && 2 <= waterLevel) && \old(waterLevel) == waterLevel)) && ((((((pumpRunning == 0 && !(tmp == 0)) && tmp == methaneLevelCritical) && (!(\old(waterLevel) == 1) || waterLevel <= 1)) || (((pumpRunning == \old(pumpRunning) && tmp == methaneLevelCritical) && methaneLevelCritical == 0) && (!(\old(waterLevel) == 1) || waterLevel <= 1))) || !(1 == systemActive)) || \old(pumpRunning) == 0)) && ((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || \old(waterLevel) == waterLevel) || !(2 <= \old(waterLevel)))) && (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0)) - InvariantResult [Line: 557]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 912]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 942]: Loop Invariant Derived loop invariant: (((!(pumpRunning == 0) && 1 == systemActive) && splverifierCounter == 0) && tmp == 1) || (((methAndRunningLastTime == 0 && 1 == systemActive) && splverifierCounter == 0) && tmp == 1) RESULT: Ultimate proved your program to be correct! [2022-11-19 07:05:35,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2df162f-d4fe-49c6-970f-adc8ace5bba4/bin/utaipan-I9t0OCRTmS/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