./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product45.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_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/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_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/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_87a12e48-18ef-45be-8e23-33c9e9330947/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 69f20c6619059452dea710c235d91f0e8ca980fcacc48c7e37668ab8a6397c50 --- 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 07:52:54,720 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:52:54,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:52:54,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:52:54,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:52:54,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:52:54,762 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:52:54,766 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:52:54,774 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:52:54,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:52:54,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:52:54,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:52:54,777 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:52:54,778 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:52:54,780 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:52:54,781 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:52:54,782 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:52:54,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:52:54,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:52:54,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:52:54,788 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:52:54,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:52:54,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:52:54,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:52:54,795 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:52:54,796 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:52:54,796 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:52:54,797 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:52:54,798 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:52:54,799 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:52:54,799 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:52:54,800 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:52:54,801 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:52:54,802 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:52:54,803 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:52:54,803 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:52:54,804 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:52:54,804 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:52:54,804 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:52:54,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:52:54,806 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:52:54,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:52:54,842 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:52:54,842 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:52:54,842 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:52:54,843 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:52:54,843 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:52:54,843 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:52:54,844 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:52:54,844 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:52:54,844 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:52:54,844 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:52:54,844 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:52:54,845 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:52:54,845 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:52:54,845 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:52:54,845 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:52:54,846 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:52:54,846 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:52:54,846 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:52:54,853 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:52:54,854 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:52:54,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:52:54,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:52:54,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:52:54,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:52:54,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:52:54,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:52:54,856 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:52:54,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:52:54,858 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:52:54,858 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:52:54,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:52:54,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:52:54,859 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:52:54,859 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:52:54,859 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:52:54,859 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:52:54,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:52:54,861 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:52:54,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:52:54,861 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:52:54,861 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:52:54,861 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_87a12e48-18ef-45be-8e23-33c9e9330947/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 69f20c6619059452dea710c235d91f0e8ca980fcacc48c7e37668ab8a6397c50 [2022-11-19 07:52:55,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:52:55,135 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:52:55,138 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:52:55,139 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:52:55,140 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:52:55,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c [2022-11-19 07:52:55,214 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/data/81457ab3e/d5671795d49d4a0fb7cb734e8b14a476/FLAG44b58d168 [2022-11-19 07:52:55,761 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:52:55,762 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c [2022-11-19 07:52:55,777 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/data/81457ab3e/d5671795d49d4a0fb7cb734e8b14a476/FLAG44b58d168 [2022-11-19 07:52:56,087 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/data/81457ab3e/d5671795d49d4a0fb7cb734e8b14a476 [2022-11-19 07:52:56,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:52:56,094 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:52:56,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:52:56,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:52:56,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:52:56,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:52:56" (1/1) ... [2022-11-19 07:52:56,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce709fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:56, skipping insertion in model container [2022-11-19 07:52:56,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:52:56" (1/1) ... [2022-11-19 07:52:56,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:52:56,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:52:56,430 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_87a12e48-18ef-45be-8e23-33c9e9330947/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c[11292,11305] [2022-11-19 07:52:56,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:52:56,526 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:52:56,620 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_87a12e48-18ef-45be-8e23-33c9e9330947/sv-benchmarks/c/product-lines/minepump_spec2_product45.cil.c[11292,11305] [2022-11-19 07:52:56,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:52:56,665 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:52:56,666 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:56 WrapperNode [2022-11-19 07:52:56,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:52:56,667 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:52:56,668 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:52:56,668 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:52:56,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:56" (1/1) ... [2022-11-19 07:52:56,715 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:56" (1/1) ... [2022-11-19 07:52:56,747 INFO L138 Inliner]: procedures = 55, calls = 100, calls flagged for inlining = 22, calls inlined = 19, statements flattened = 190 [2022-11-19 07:52:56,753 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:52:56,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:52:56,754 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:52:56,754 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:52:56,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:56" (1/1) ... [2022-11-19 07:52:56,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:56" (1/1) ... [2022-11-19 07:52:56,766 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:56" (1/1) ... [2022-11-19 07:52:56,766 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:56" (1/1) ... [2022-11-19 07:52:56,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:56" (1/1) ... [2022-11-19 07:52:56,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:56" (1/1) ... [2022-11-19 07:52:56,788 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:56" (1/1) ... [2022-11-19 07:52:56,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:56" (1/1) ... [2022-11-19 07:52:56,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:52:56,793 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:52:56,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:52:56,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:52:56,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:56" (1/1) ... [2022-11-19 07:52:56,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:52:56,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:52:56,843 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:52:56,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:52:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:52:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-19 07:52:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-19 07:52:56,876 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-19 07:52:56,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-19 07:52:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 07:52:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 07:52:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 07:52:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 07:52:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-19 07:52:56,877 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-19 07:52:56,877 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2022-11-19 07:52:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2022-11-19 07:52:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2022-11-19 07:52:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2022-11-19 07:52:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:52:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-19 07:52:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-19 07:52:56,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:52:56,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:52:56,947 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:52:56,949 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:52:57,234 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:52:57,427 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:52:57,442 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:52:57,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:52:57 BoogieIcfgContainer [2022-11-19 07:52:57,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:52:57,450 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:52:57,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:52:57,455 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:52:57,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:52:56" (1/3) ... [2022-11-19 07:52:57,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f010599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:52:57, skipping insertion in model container [2022-11-19 07:52:57,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:52:56" (2/3) ... [2022-11-19 07:52:57,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f010599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:52:57, skipping insertion in model container [2022-11-19 07:52:57,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:52:57" (3/3) ... [2022-11-19 07:52:57,463 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product45.cil.c [2022-11-19 07:52:57,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:52:57,487 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:52:57,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:52:57,560 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;@837f850, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:52:57,561 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:52:57,566 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 07:52:57,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:52:57,576 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:57,577 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 07:52:57,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:57,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:57,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1712081906, now seen corresponding path program 1 times [2022-11-19 07:52:57,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:57,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172941691] [2022-11-19 07:52:57,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:57,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:57,848 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 07:52:57,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:57,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172941691] [2022-11-19 07:52:57,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172941691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:57,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:57,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:52:57,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006223102] [2022-11-19 07:52:57,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:57,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:52:57,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:57,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:52:57,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:52:57,908 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 07:52:58,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:58,019 INFO L93 Difference]: Finished difference Result 126 states and 169 transitions. [2022-11-19 07:52:58,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:52:58,027 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 07:52:58,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:58,041 INFO L225 Difference]: With dead ends: 126 [2022-11-19 07:52:58,041 INFO L226 Difference]: Without dead ends: 59 [2022-11-19 07:52:58,045 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 07:52:58,058 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 07:52:58,059 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 07:52:58,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-11-19 07:52:58,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-11-19 07:52:58,127 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 07:52:58,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 75 transitions. [2022-11-19 07:52:58,140 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 75 transitions. Word has length 17 [2022-11-19 07:52:58,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:58,141 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 75 transitions. [2022-11-19 07:52:58,142 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 07:52:58,142 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 75 transitions. [2022-11-19 07:52:58,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:52:58,148 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:58,149 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 07:52:58,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:52:58,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:58,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:58,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1728878015, now seen corresponding path program 1 times [2022-11-19 07:52:58,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:58,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833834189] [2022-11-19 07:52:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:58,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:58,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:58,321 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 07:52:58,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:58,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833834189] [2022-11-19 07:52:58,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833834189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:58,323 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:58,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:58,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492634845] [2022-11-19 07:52:58,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:58,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:58,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:58,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:58,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:58,332 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 07:52:58,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:58,419 INFO L93 Difference]: Finished difference Result 95 states and 121 transitions. [2022-11-19 07:52:58,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:58,421 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 07:52:58,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:58,423 INFO L225 Difference]: With dead ends: 95 [2022-11-19 07:52:58,424 INFO L226 Difference]: Without dead ends: 51 [2022-11-19 07:52:58,426 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 07:52:58,428 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 07:52:58,431 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 07:52:58,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-19 07:52:58,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-19 07:52:58,444 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 07:52:58,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2022-11-19 07:52:58,448 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 18 [2022-11-19 07:52:58,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:58,450 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2022-11-19 07:52:58,451 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 07:52:58,452 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2022-11-19 07:52:58,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:52:58,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:58,459 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 07:52:58,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:52:58,459 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:58,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:58,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1819320372, now seen corresponding path program 1 times [2022-11-19 07:52:58,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:58,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13552985] [2022-11-19 07:52:58,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:58,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:58,554 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 07:52:58,554 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:58,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13552985] [2022-11-19 07:52:58,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13552985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:58,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:58,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:58,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495487845] [2022-11-19 07:52:58,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:58,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:58,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:58,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:58,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:58,557 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:52:58,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:58,596 INFO L93 Difference]: Finished difference Result 100 states and 127 transitions. [2022-11-19 07:52:58,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:58,596 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-19 07:52:58,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:58,598 INFO L225 Difference]: With dead ends: 100 [2022-11-19 07:52:58,598 INFO L226 Difference]: Without dead ends: 51 [2022-11-19 07:52:58,599 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 07:52:58,600 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:58,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 48 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:52:58,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-19 07:52:58,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-19 07:52:58,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 32 states have (on average 1.28125) internal successors, (41), 39 states have internal predecessors, (41), 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 07:52:58,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2022-11-19 07:52:58,611 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 20 [2022-11-19 07:52:58,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:58,612 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2022-11-19 07:52:58,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:52:58,612 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2022-11-19 07:52:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 07:52:58,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:58,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:58,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:52:58,614 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:58,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:58,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1221128221, now seen corresponding path program 1 times [2022-11-19 07:52:58,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:58,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736632824] [2022-11-19 07:52:58,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:58,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:58,711 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 07:52:58,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:58,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736632824] [2022-11-19 07:52:58,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736632824] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:58,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:58,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:52:58,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328064043] [2022-11-19 07:52:58,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:58,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:52:58,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:58,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:52:58,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:52:58,714 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:52:59,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:59,028 INFO L93 Difference]: Finished difference Result 165 states and 204 transitions. [2022-11-19 07:52:59,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:52:59,029 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 30 [2022-11-19 07:52:59,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:59,030 INFO L225 Difference]: With dead ends: 165 [2022-11-19 07:52:59,031 INFO L226 Difference]: Without dead ends: 116 [2022-11-19 07:52:59,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:52:59,032 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 126 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:59,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 161 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:52:59,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-11-19 07:52:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2022-11-19 07:52:59,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 80 states have internal predecessors, (92), 18 states have call successors, (18), 15 states have call predecessors, (18), 18 states have return successors, (23), 19 states have call predecessors, (23), 18 states have call successors, (23) [2022-11-19 07:52:59,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 133 transitions. [2022-11-19 07:52:59,054 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 133 transitions. Word has length 30 [2022-11-19 07:52:59,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:59,055 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 133 transitions. [2022-11-19 07:52:59,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 07:52:59,055 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 133 transitions. [2022-11-19 07:52:59,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 07:52:59,056 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:59,056 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:59,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:52:59,057 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:59,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:59,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1529467977, now seen corresponding path program 1 times [2022-11-19 07:52:59,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:59,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177463565] [2022-11-19 07:52:59,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:59,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:59,180 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 07:52:59,180 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:59,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177463565] [2022-11-19 07:52:59,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177463565] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:59,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:59,181 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:52:59,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293414985] [2022-11-19 07:52:59,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:59,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:52:59,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:59,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:52:59,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:52:59,182 INFO L87 Difference]: Start difference. First operand 110 states and 133 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:52:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:59,336 INFO L93 Difference]: Finished difference Result 322 states and 394 transitions. [2022-11-19 07:52:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:52:59,337 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2022-11-19 07:52:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:59,339 INFO L225 Difference]: With dead ends: 322 [2022-11-19 07:52:59,339 INFO L226 Difference]: Without dead ends: 214 [2022-11-19 07:52:59,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:52:59,341 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 40 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 253 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 07:52:59,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 253 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:52:59,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-19 07:52:59,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 202. [2022-11-19 07:52:59,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 133 states have (on average 1.1954887218045114) internal successors, (159), 144 states have internal predecessors, (159), 34 states have call successors, (34), 28 states have call predecessors, (34), 34 states have return successors, (44), 36 states have call predecessors, (44), 34 states have call successors, (44) [2022-11-19 07:52:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 237 transitions. [2022-11-19 07:52:59,382 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 237 transitions. Word has length 31 [2022-11-19 07:52:59,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:59,382 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 237 transitions. [2022-11-19 07:52:59,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 07:52:59,382 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 237 transitions. [2022-11-19 07:52:59,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 07:52:59,384 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:59,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:59,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:52:59,384 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:59,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:59,385 INFO L85 PathProgramCache]: Analyzing trace with hash 702241949, now seen corresponding path program 1 times [2022-11-19 07:52:59,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:59,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623554534] [2022-11-19 07:52:59,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:59,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:59,468 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 07:52:59,468 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:59,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623554534] [2022-11-19 07:52:59,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623554534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:59,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:59,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:52:59,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109875877] [2022-11-19 07:52:59,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:59,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:52:59,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:59,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:52:59,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:52:59,471 INFO L87 Difference]: Start difference. First operand 202 states and 237 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 07:52:59,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:59,578 INFO L93 Difference]: Finished difference Result 310 states and 380 transitions. [2022-11-19 07:52:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:52:59,578 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-11-19 07:52:59,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:59,588 INFO L225 Difference]: With dead ends: 310 [2022-11-19 07:52:59,588 INFO L226 Difference]: Without dead ends: 308 [2022-11-19 07:52:59,589 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 07:52:59,593 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 39 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:59,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 105 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:52:59,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-11-19 07:52:59,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 308. [2022-11-19 07:52:59,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 203 states have (on average 1.2019704433497538) internal successors, (244), 220 states have internal predecessors, (244), 52 states have call successors, (52), 43 states have call predecessors, (52), 52 states have return successors, (79), 55 states have call predecessors, (79), 52 states have call successors, (79) [2022-11-19 07:52:59,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 375 transitions. [2022-11-19 07:52:59,672 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 375 transitions. Word has length 34 [2022-11-19 07:52:59,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:59,673 INFO L495 AbstractCegarLoop]: Abstraction has 308 states and 375 transitions. [2022-11-19 07:52:59,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 07:52:59,673 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 375 transitions. [2022-11-19 07:52:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-11-19 07:52:59,682 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:59,682 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 07:52:59,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:52:59,683 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:59,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:59,683 INFO L85 PathProgramCache]: Analyzing trace with hash -533843979, now seen corresponding path program 1 times [2022-11-19 07:52:59,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:59,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771783851] [2022-11-19 07:52:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:59,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:59,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:59,992 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 07:52:59,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:59,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771783851] [2022-11-19 07:52:59,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771783851] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:52:59,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308539798] [2022-11-19 07:52:59,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:59,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:52:59,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:52:59,997 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:53:00,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:53:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:00,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:53:00,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:53:00,205 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 07:53:00,205 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:53:00,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308539798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:00,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:53:00,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-11-19 07:53:00,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314353457] [2022-11-19 07:53:00,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:00,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:53:00,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:00,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:53:00,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:53:00,208 INFO L87 Difference]: Start difference. First operand 308 states and 375 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 07:53:00,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:00,310 INFO L93 Difference]: Finished difference Result 506 states and 628 transitions. [2022-11-19 07:53:00,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:53:00,311 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 07:53:00,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:00,313 INFO L225 Difference]: With dead ends: 506 [2022-11-19 07:53:00,313 INFO L226 Difference]: Without dead ends: 292 [2022-11-19 07:53:00,314 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 07:53:00,315 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 35 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:00,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 157 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:53:00,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-11-19 07:53:00,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 278. [2022-11-19 07:53:00,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 180 states have (on average 1.1722222222222223) internal successors, (211), 196 states have internal predecessors, (211), 49 states have call successors, (49), 40 states have call predecessors, (49), 48 states have return successors, (68), 50 states have call predecessors, (68), 49 states have call successors, (68) [2022-11-19 07:53:00,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 328 transitions. [2022-11-19 07:53:00,351 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 328 transitions. Word has length 64 [2022-11-19 07:53:00,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:00,352 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 328 transitions. [2022-11-19 07:53:00,352 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 07:53:00,352 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 328 transitions. [2022-11-19 07:53:00,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-19 07:53:00,354 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:00,354 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 07:53:00,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:53:00,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:53:00,561 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:00,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:00,562 INFO L85 PathProgramCache]: Analyzing trace with hash 938898117, now seen corresponding path program 1 times [2022-11-19 07:53:00,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:00,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764954279] [2022-11-19 07:53:00,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:00,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:00,995 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 07:53:00,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:00,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764954279] [2022-11-19 07:53:00,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764954279] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:53:00,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [622743054] [2022-11-19 07:53:00,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:00,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:53:00,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:53:00,997 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:53:01,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:53:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:01,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 07:53:01,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:53:01,157 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:53:01,157 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:53:01,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [622743054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:01,157 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:53:01,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 12 [2022-11-19 07:53:01,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499464204] [2022-11-19 07:53:01,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:01,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:53:01,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:01,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:53:01,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:53:01,160 INFO L87 Difference]: Start difference. First operand 278 states and 328 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 07:53:01,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:01,289 INFO L93 Difference]: Finished difference Result 560 states and 677 transitions. [2022-11-19 07:53:01,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:53:01,289 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 74 [2022-11-19 07:53:01,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:01,291 INFO L225 Difference]: With dead ends: 560 [2022-11-19 07:53:01,292 INFO L226 Difference]: Without dead ends: 284 [2022-11-19 07:53:01,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:53:01,293 INFO L413 NwaCegarLoop]: 76 mSDtfsCounter, 40 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:01,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 159 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:53:01,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-11-19 07:53:01,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 278. [2022-11-19 07:53:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 183 states have (on average 1.1530054644808743) internal successors, (211), 199 states have internal predecessors, (211), 48 states have call successors, (48), 41 states have call predecessors, (48), 46 states have return successors, (66), 49 states have call predecessors, (66), 48 states have call successors, (66) [2022-11-19 07:53:01,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 325 transitions. [2022-11-19 07:53:01,347 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 325 transitions. Word has length 74 [2022-11-19 07:53:01,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:01,348 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 325 transitions. [2022-11-19 07:53:01,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-19 07:53:01,349 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 325 transitions. [2022-11-19 07:53:01,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-19 07:53:01,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:01,351 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:01,362 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-19 07:53:01,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 07:53:01,557 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:01,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:01,558 INFO L85 PathProgramCache]: Analyzing trace with hash 405738871, now seen corresponding path program 1 times [2022-11-19 07:53:01,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:01,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162566989] [2022-11-19 07:53:01,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:01,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:02,019 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:53:02,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:02,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162566989] [2022-11-19 07:53:02,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162566989] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:53:02,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301905953] [2022-11-19 07:53:02,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:02,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:53:02,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:53:02,021 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:53:02,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:53:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:02,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-19 07:53:02,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:53:02,416 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:53:02,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:53:02,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301905953] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:02,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:53:02,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16] total 25 [2022-11-19 07:53:02,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233728610] [2022-11-19 07:53:02,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:02,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 07:53:02,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:02,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 07:53:02,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2022-11-19 07:53:02,420 INFO L87 Difference]: Start difference. First operand 278 states and 325 transitions. Second operand has 14 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 3 states have call successors, (12), 3 states have call predecessors, (12), 7 states have return successors, (11), 8 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:53:02,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:02,945 INFO L93 Difference]: Finished difference Result 549 states and 664 transitions. [2022-11-19 07:53:02,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 07:53:02,946 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 3 states have call successors, (12), 3 states have call predecessors, (12), 7 states have return successors, (11), 8 states have call predecessors, (11), 3 states have call successors, (11) Word has length 77 [2022-11-19 07:53:02,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:02,951 INFO L225 Difference]: With dead ends: 549 [2022-11-19 07:53:02,951 INFO L226 Difference]: Without dead ends: 378 [2022-11-19 07:53:02,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=1014, Unknown=0, NotChecked=0, Total=1122 [2022-11-19 07:53:02,955 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 49 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:02,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 685 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:53:02,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-11-19 07:53:03,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 374. [2022-11-19 07:53:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 246 states have (on average 1.1382113821138211) internal successors, (280), 265 states have internal predecessors, (280), 65 states have call successors, (65), 56 states have call predecessors, (65), 62 states have return successors, (96), 65 states have call predecessors, (96), 65 states have call successors, (96) [2022-11-19 07:53:03,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 441 transitions. [2022-11-19 07:53:03,015 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 441 transitions. Word has length 77 [2022-11-19 07:53:03,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:03,016 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 441 transitions. [2022-11-19 07:53:03,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 5.3) internal successors, (53), 9 states have internal predecessors, (53), 3 states have call successors, (12), 3 states have call predecessors, (12), 7 states have return successors, (11), 8 states have call predecessors, (11), 3 states have call successors, (11) [2022-11-19 07:53:03,016 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 441 transitions. [2022-11-19 07:53:03,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-19 07:53:03,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:53:03,019 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:03,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:53:03,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:53:03,223 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:53:03,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:53:03,223 INFO L85 PathProgramCache]: Analyzing trace with hash 758767547, now seen corresponding path program 1 times [2022-11-19 07:53:03,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:53:03,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729071729] [2022-11-19 07:53:03,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:03,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:53:03,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:03,626 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 07:53:03,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:53:03,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729071729] [2022-11-19 07:53:03,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729071729] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:53:03,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194139203] [2022-11-19 07:53:03,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:53:03,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:53:03,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:53:03,631 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:53:03,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:53:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:53:03,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-19 07:53:03,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:53:03,915 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 07:53:03,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:53:03,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194139203] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:53:03,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:53:03,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [16] total 22 [2022-11-19 07:53:03,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710094396] [2022-11-19 07:53:03,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:53:03,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-19 07:53:03,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:53:03,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-19 07:53:03,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=406, Unknown=0, NotChecked=0, Total=462 [2022-11-19 07:53:03,918 INFO L87 Difference]: Start difference. First operand 374 states and 441 transitions. Second operand has 11 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 5 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:53:04,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:53:04,375 INFO L93 Difference]: Finished difference Result 751 states and 892 transitions. [2022-11-19 07:53:04,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-19 07:53:04,376 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 5 states have call predecessors, (11), 2 states have call successors, (11) Word has length 80 [2022-11-19 07:53:04,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:53:04,376 INFO L225 Difference]: With dead ends: 751 [2022-11-19 07:53:04,377 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:53:04,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=823, Unknown=0, NotChecked=0, Total=930 [2022-11-19 07:53:04,380 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 49 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:53:04,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 404 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:53:04,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:53:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:53:04,381 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 07:53:04,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:53:04,382 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 80 [2022-11-19 07:53:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:53:04,382 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:53:04,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 2 states have call successors, (10), 2 states have call predecessors, (10), 5 states have return successors, (11), 5 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-19 07:53:04,382 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:53:04,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:53:04,385 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:53:04,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:53:04,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:53:04,600 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 07:53:07,284 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 566 572) no Hoare annotation was computed. [2022-11-19 07:53:07,284 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 566 572) the Hoare annotation is: true [2022-11-19 07:53:07,284 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 826 837) the Hoare annotation is: (let ((.cse2 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~methaneLevelCritical~0)| 0)) (.cse1 (= ~methaneLevelCritical~0 0))) (and (or (not .cse0) .cse1 .cse2 (not (= ~methAndRunningLastTime~0 0))) (or (= ~pumpRunning~0 0) .cse2 .cse0 (not .cse1)))) [2022-11-19 07:53:07,285 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 826 837) no Hoare annotation was computed. [2022-11-19 07:53:07,285 INFO L902 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 838 846) the Hoare annotation is: true [2022-11-19 07:53:07,285 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 838 846) no Hoare annotation was computed. [2022-11-19 07:53:07,285 INFO L895 garLoopResultBuilder]: At program point L944(line 944) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) (= ~methAndRunningLastTime~0 0) .cse0) (let ((.cse1 (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0))) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methaneLevelCritical~0 0) .cse1) .cse0 (= |old(~pumpRunning~0)| 0) (and (= ~pumpRunning~0 0) (not (= |timeShift_processEnvironment_~tmp~5#1| 0)) .cse1))))) [2022-11-19 07:53:07,285 INFO L899 garLoopResultBuilder]: For program point L944-1(line 944) no Hoare annotation was computed. [2022-11-19 07:53:07,286 INFO L895 garLoopResultBuilder]: At program point L614(line 614) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 (and .cse1 (= ~methAndRunningLastTime~0 0) (not (= ~pumpRunning~0 0)))) (or (and .cse1 (= ~methaneLevelCritical~0 0) (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0)) .cse0 (= |old(~pumpRunning~0)| 0)))) [2022-11-19 07:53:07,286 INFO L895 garLoopResultBuilder]: At program point L420(line 420) 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 07:53:07,286 INFO L895 garLoopResultBuilder]: At program point L606(line 606) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 |old(~pumpRunning~0)|)) (.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 (and .cse1 (= ~methAndRunningLastTime~0 0) (not (= ~pumpRunning~0 0)))) (or .cse1 .cse0 (= |old(~pumpRunning~0)| 0)))) [2022-11-19 07:53:07,286 INFO L899 garLoopResultBuilder]: For program point L606-1(line 606) no Hoare annotation was computed. [2022-11-19 07:53:07,287 INFO L895 garLoopResultBuilder]: At program point L619(line 619) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 (= |old(~pumpRunning~0)| 0)) (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0))))) [2022-11-19 07:53:07,287 INFO L895 garLoopResultBuilder]: At program point L619-1(lines 600 624) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) (= ~methAndRunningLastTime~0 0) .cse0) (let ((.cse1 (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0))) (or (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= ~methaneLevelCritical~0 0) .cse1) .cse0 (= |old(~pumpRunning~0)| 0) (and (= ~pumpRunning~0 0) (not (= |timeShift_processEnvironment_~tmp~5#1| 0)) .cse1))))) [2022-11-19 07:53:07,287 INFO L899 garLoopResultBuilder]: For program point L553-1(lines 553 559) no Hoare annotation was computed. [2022-11-19 07:53:07,287 INFO L899 garLoopResultBuilder]: For program point L950(lines 950 960) no Hoare annotation was computed. [2022-11-19 07:53:07,287 INFO L895 garLoopResultBuilder]: At program point L946(lines 946 963) the Hoare annotation is: (let ((.cse3 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| ~methaneLevelCritical~0))) (let ((.cse1 (= ~pumpRunning~0 0)) (.cse4 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse0 (not (= 1 ~systemActive~0))) (.cse5 (and (= ~methAndRunningLastTime~0 0) .cse3))) (and (let ((.cse2 (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0))) (or .cse0 (= |old(~pumpRunning~0)| 0) (and .cse1 (not (= |timeShift_processEnvironment_~tmp~5#1| 0)) .cse2 .cse3) (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| 0) .cse2 .cse3))) (or .cse4 .cse0 .cse5 (and .cse1 .cse3)) (or .cse4 .cse0 .cse5 (not (= ~methaneLevelCritical~0 0)))))) [2022-11-19 07:53:07,288 INFO L895 garLoopResultBuilder]: At program point L946-1(lines 938 966) the Hoare annotation is: (let ((.cse2 (not (= ~methaneLevelCritical~0 0))) (.cse6 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse5 (not (= 1 ~systemActive~0))) (.cse1 (= ~methAndRunningLastTime~0 0)) (.cse0 (= ~pumpRunning~0 0)) (.cse4 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| ~methaneLevelCritical~0))) (and (let ((.cse3 (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) .cse5 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~9#1| 0) .cse3 .cse4) (= |old(~pumpRunning~0)| 0))) (or .cse6 .cse1 .cse5 .cse2) (or .cse6 .cse5 (and .cse1 .cse4) (and (= ~pumpRunning~0 |timeShift___utac_acc__Specification2_spec__2_~tmp___0~2#1|) (not .cse0) .cse4)))) [2022-11-19 07:53:07,288 INFO L899 garLoopResultBuilder]: For program point L546-1(lines 545 564) no Hoare annotation was computed. [2022-11-19 07:53:07,288 INFO L895 garLoopResultBuilder]: At program point L608(lines 608 616) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (= |old(~pumpRunning~0)| 0))) (and (or .cse0 .cse1 (and (= ~pumpRunning~0 |old(~pumpRunning~0)|) (= |timeShift_processEnvironment_~tmp~5#1| ~methaneLevelCritical~0))) (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 (and (not .cse1) (= ~methAndRunningLastTime~0 0))))) [2022-11-19 07:53:07,288 INFO L899 garLoopResultBuilder]: For program point L604(lines 604 621) no Hoare annotation was computed. [2022-11-19 07:53:07,289 INFO L899 garLoopResultBuilder]: For program point L951(lines 951 957) no Hoare annotation was computed. [2022-11-19 07:53:07,289 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 542 565) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= ~pumpRunning~0 |old(~pumpRunning~0)|))) (and (or .cse0 .cse1 (= |old(~pumpRunning~0)| 0)) (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse1 (and .cse0 (= ~methAndRunningLastTime~0 0))))) [2022-11-19 07:53:07,289 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 542 565) no Hoare annotation was computed. [2022-11-19 07:53:07,289 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 420) no Hoare annotation was computed. [2022-11-19 07:53:07,289 INFO L899 garLoopResultBuilder]: For program point L448(line 448) no Hoare annotation was computed. [2022-11-19 07:53:07,289 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 427 456) no Hoare annotation was computed. [2022-11-19 07:53:07,290 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 427 456) the Hoare annotation is: true [2022-11-19 07:53:07,290 INFO L899 garLoopResultBuilder]: For program point L441(lines 441 445) no Hoare annotation was computed. [2022-11-19 07:53:07,290 INFO L902 garLoopResultBuilder]: At program point L441-1(lines 441 445) the Hoare annotation is: true [2022-11-19 07:53:07,290 INFO L902 garLoopResultBuilder]: At program point L437-2(lines 437 451) the Hoare annotation is: true [2022-11-19 07:53:07,290 INFO L902 garLoopResultBuilder]: At program point L433(line 433) the Hoare annotation is: true [2022-11-19 07:53:07,290 INFO L899 garLoopResultBuilder]: For program point L433-1(line 433) no Hoare annotation was computed. [2022-11-19 07:53:07,291 INFO L902 garLoopResultBuilder]: At program point L452(lines 427 456) the Hoare annotation is: true [2022-11-19 07:53:07,291 INFO L895 garLoopResultBuilder]: At program point L766(line 766) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1))) [2022-11-19 07:53:07,291 INFO L895 garLoopResultBuilder]: At program point L787(lines 744 789) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1))) [2022-11-19 07:53:07,291 INFO L899 garLoopResultBuilder]: For program point L754(lines 754 760) no Hoare annotation was computed. [2022-11-19 07:53:07,291 INFO L899 garLoopResultBuilder]: For program point L754-1(lines 754 760) no Hoare annotation was computed. [2022-11-19 07:53:07,292 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-19 07:53:07,292 INFO L895 garLoopResultBuilder]: At program point L780-2(lines 774 785) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1) (and (not (= ~pumpRunning~0 0)) .cse0 .cse1))) [2022-11-19 07:53:07,292 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 07:53:07,292 INFO L899 garLoopResultBuilder]: For program point L764(lines 764 770) no Hoare annotation was computed. [2022-11-19 07:53:07,292 INFO L899 garLoopResultBuilder]: For program point L764-1(lines 764 770) no Hoare annotation was computed. [2022-11-19 07:53:07,292 INFO L902 garLoopResultBuilder]: At program point L793(lines 734 797) the Hoare annotation is: true [2022-11-19 07:53:07,293 INFO L895 garLoopResultBuilder]: At program point L756(line 756) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0))) (or (and (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1) (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1))) [2022-11-19 07:53:07,293 INFO L895 garLoopResultBuilder]: At program point L517(lines 517 524) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= ~methaneLevelCritical~0 0) (= 1 ~systemActive~0)) [2022-11-19 07:53:07,293 INFO L902 garLoopResultBuilder]: At program point L517-2(lines 517 524) the Hoare annotation is: true [2022-11-19 07:53:07,293 INFO L895 garLoopResultBuilder]: At program point L790(lines 743 791) the Hoare annotation is: false [2022-11-19 07:53:07,293 INFO L899 garLoopResultBuilder]: For program point L745(lines 744 789) no Hoare annotation was computed. [2022-11-19 07:53:07,293 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 814 825) no Hoare annotation was computed. [2022-11-19 07:53:07,294 INFO L902 garLoopResultBuilder]: At program point waterRiseENTRY(lines 814 825) the Hoare annotation is: true [2022-11-19 07:53:07,294 INFO L895 garLoopResultBuilder]: At program point L638(line 638) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))) (or (not .cse1) (= ~pumpRunning~0 0) .cse0 (not (= ~methAndRunningLastTime~0 0))))) [2022-11-19 07:53:07,294 INFO L895 garLoopResultBuilder]: At program point L638-1(line 638) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))) (or (not .cse1) .cse0 (and (= ~pumpRunning~0 0) (= |processEnvironment__wrappee__methaneQuery_activatePump_#t~ret30#1| ~methaneLevelCritical~0)) (not (= ~methAndRunningLastTime~0 0))))) [2022-11-19 07:53:07,294 INFO L895 garLoopResultBuilder]: At program point L593(line 593) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) .cse1 (not (= ~methAndRunningLastTime~0 0))) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 .cse0 (not (= ~methaneLevelCritical~0 0))))) [2022-11-19 07:53:07,294 INFO L899 garLoopResultBuilder]: For program point L593-1(lines 574 598) no Hoare annotation was computed. [2022-11-19 07:53:07,295 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__methaneQueryENTRY(lines 574 598) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0) .cse1 (not (= ~methAndRunningLastTime~0 0))) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 .cse0 (not (= ~methaneLevelCritical~0 0))))) [2022-11-19 07:53:07,295 INFO L895 garLoopResultBuilder]: At program point L588(line 588) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0)) (.cse0 (not (= 1 ~systemActive~0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))) (or (not .cse1) (= ~pumpRunning~0 0) .cse0 (not (= ~methAndRunningLastTime~0 0))))) [2022-11-19 07:53:07,295 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__methaneQueryEXIT(lines 574 598) no Hoare annotation was computed. [2022-11-19 07:53:07,295 INFO L899 garLoopResultBuilder]: For program point L582(lines 582 590) no Hoare annotation was computed. [2022-11-19 07:53:07,296 INFO L895 garLoopResultBuilder]: At program point L578(lines 578 595) the Hoare annotation is: (let ((.cse1 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) (= ~pumpRunning~0 0) .cse1 (not (= ~methAndRunningLastTime~0 0))) (or (= ~pumpRunning~0 |old(~pumpRunning~0)|) .cse1 .cse0 (not (= ~methaneLevelCritical~0 0))))) [2022-11-19 07:53:07,296 INFO L902 garLoopResultBuilder]: At program point isMethaneAlarmENTRY(lines 658 668) the Hoare annotation is: true [2022-11-19 07:53:07,296 INFO L899 garLoopResultBuilder]: For program point isMethaneAlarmEXIT(lines 658 668) no Hoare annotation was computed. [2022-11-19 07:53:07,296 INFO L902 garLoopResultBuilder]: At program point L663(line 663) the Hoare annotation is: true [2022-11-19 07:53:07,296 INFO L899 garLoopResultBuilder]: For program point L663-1(line 663) no Hoare annotation was computed. [2022-11-19 07:53:07,300 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:53:07,302 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:53:07,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:53:07 BoogieIcfgContainer [2022-11-19 07:53:07,321 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:53:07,321 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:53:07,321 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:53:07,322 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:53:07,322 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:52:57" (3/4) ... [2022-11-19 07:53:07,325 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:53:07,334 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-19 07:53:07,335 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-19 07:53:07,335 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-11-19 07:53:07,335 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-19 07:53:07,335 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-19 07:53:07,336 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-19 07:53:07,336 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__methaneQuery [2022-11-19 07:53:07,336 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneAlarm [2022-11-19 07:53:07,346 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2022-11-19 07:53:07,348 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-19 07:53:07,349 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-19 07:53:07,349 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:53:07,349 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:53:07,376 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || \old(pumpRunning) == 0) && ((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0)) [2022-11-19 07:53:07,378 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) && (((((pumpRunning == \old(pumpRunning) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((pumpRunning == 0 && !(tmp == 0)) && tmp == methaneLevelCritical)) [2022-11-19 07:53:07,378 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methAndRunningLastTime == 0)) && (((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) [2022-11-19 07:53:07,379 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(1 == systemActive) || \old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && tmp == methaneLevelCritical)) && ((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (!(\old(pumpRunning) == 0) && methAndRunningLastTime == 0)) [2022-11-19 07:53:07,380 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!(1 == systemActive) || \old(pumpRunning) == 0) || (((pumpRunning == 0 && !(tmp == 0)) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) || (((pumpRunning == \old(pumpRunning) && tmp == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) && (((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (methAndRunningLastTime == 0 && tmp == methaneLevelCritical)) || (pumpRunning == 0 && tmp == methaneLevelCritical))) && (((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (methAndRunningLastTime == 0 && tmp == methaneLevelCritical)) || !(methaneLevelCritical == 0)) [2022-11-19 07:53:07,380 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((pumpRunning == 0 && methAndRunningLastTime == 0) && !(methaneLevelCritical == 0)) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical) || !(1 == systemActive)) || ((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && tmp == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) || \old(pumpRunning) == 0) && (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && (((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (methAndRunningLastTime == 0 && tmp == methaneLevelCritical)) || ((pumpRunning == tmp___0 && !(pumpRunning == 0)) && tmp == methaneLevelCritical)) [2022-11-19 07:53:07,381 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((!(1 == systemActive) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (pumpRunning == 0 && aux-isMethaneAlarm()-aux == methaneLevelCritical)) || !(methAndRunningLastTime == 0)) [2022-11-19 07:53:07,381 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(1 == systemActive) || \old(pumpRunning) == 0) && (!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) [2022-11-19 07:53:07,411 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:53:07,412 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:53:07,412 INFO L158 Benchmark]: Toolchain (without parser) took 11317.87ms. Allocated memory was 109.1MB in the beginning and 192.9MB in the end (delta: 83.9MB). Free memory was 66.1MB in the beginning and 102.5MB in the end (delta: -36.4MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2022-11-19 07:53:07,413 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 109.1MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:53:07,413 INFO L158 Benchmark]: CACSL2BoogieTranslator took 567.77ms. Allocated memory is still 109.1MB. Free memory was 65.9MB in the beginning and 76.3MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:53:07,413 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.58ms. Allocated memory is still 109.1MB. Free memory was 76.3MB in the beginning and 74.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:53:07,414 INFO L158 Benchmark]: Boogie Preprocessor took 38.18ms. Allocated memory is still 109.1MB. Free memory was 74.2MB in the beginning and 72.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:53:07,414 INFO L158 Benchmark]: RCFGBuilder took 654.90ms. Allocated memory is still 109.1MB. Free memory was 72.4MB in the beginning and 48.4MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-19 07:53:07,415 INFO L158 Benchmark]: TraceAbstraction took 9871.24ms. Allocated memory was 109.1MB in the beginning and 192.9MB in the end (delta: 83.9MB). Free memory was 47.8MB in the beginning and 107.8MB in the end (delta: -59.9MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. [2022-11-19 07:53:07,415 INFO L158 Benchmark]: Witness Printer took 90.46ms. Allocated memory is still 192.9MB. Free memory was 107.8MB in the beginning and 102.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:53:07,417 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 109.1MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 567.77ms. Allocated memory is still 109.1MB. Free memory was 65.9MB in the beginning and 76.3MB in the end (delta: -10.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.58ms. Allocated memory is still 109.1MB. Free memory was 76.3MB in the beginning and 74.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.18ms. Allocated memory is still 109.1MB. Free memory was 74.2MB in the beginning and 72.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 654.90ms. Allocated memory is still 109.1MB. Free memory was 72.4MB in the beginning and 48.4MB in the end (delta: 23.9MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 9871.24ms. Allocated memory was 109.1MB in the beginning and 192.9MB in the end (delta: 83.9MB). Free memory was 47.8MB in the beginning and 107.8MB in the end (delta: -59.9MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. * Witness Printer took 90.46ms. Allocated memory is still 192.9MB. Free memory was 107.8MB in the beginning and 102.5MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. 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: 420]: 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: 9.8s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 457 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 438 mSDsluCounter, 2127 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1488 mSDsCounter, 81 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1366 IncrementalHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 81 mSolverCounterUnsat, 639 mSDtfsCounter, 1366 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 398 GetRequests, 305 SyntacticMatches, 1 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=374occurred in iteration=9, InterpolantAutomatonStates: 77, 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, 10 MinimizatonAttempts, 42 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 36 LocationsWithAnnotation, 933 PreInvPairs, 1071 NumberOfFragments, 766 HoareAnnotationTreeSize, 933 FomulaSimplifications, 224 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 36 FomulaSimplificationsInter, 8755 FormulaSimplificationTreeSizeReductionInter, 2.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 740 NumberOfCodeBlocks, 740 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 726 ConstructedInterpolants, 0 QuantifiedInterpolants, 1632 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1304 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 14 InterpolantComputations, 10 PerfectInterpolantSequences, 244/292 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: 938]: Loop Invariant Derived loop invariant: ((((((((pumpRunning == 0 && methAndRunningLastTime == 0) && !(methaneLevelCritical == 0)) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical) || !(1 == systemActive)) || ((((pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0) && tmp == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) || \old(pumpRunning) == 0) && (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) || !(methaneLevelCritical == 0))) && (((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (methAndRunningLastTime == 0 && tmp == methaneLevelCritical)) || ((pumpRunning == tmp___0 && !(pumpRunning == 0)) && tmp == methaneLevelCritical)) - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 946]: Loop Invariant Derived loop invariant: ((((!(1 == systemActive) || \old(pumpRunning) == 0) || (((pumpRunning == 0 && !(tmp == 0)) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) || (((pumpRunning == \old(pumpRunning) && tmp == 0) && tmp == methaneLevelCritical) && tmp == methaneLevelCritical)) && (((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (methAndRunningLastTime == 0 && tmp == methaneLevelCritical)) || (pumpRunning == 0 && tmp == methaneLevelCritical))) && (((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (methAndRunningLastTime == 0 && tmp == methaneLevelCritical)) || !(methaneLevelCritical == 0)) - InvariantResult [Line: 744]: Loop Invariant Derived loop invariant: (((!(pumpRunning == 0) && 1 == systemActive) && !(methaneLevelCritical == 0)) && splverifierCounter == 0) || ((methAndRunningLastTime == 0 && 1 == systemActive) && splverifierCounter == 0) - InvariantResult [Line: 608]: Loop Invariant Derived loop invariant: ((!(1 == systemActive) || \old(pumpRunning) == 0) || (pumpRunning == \old(pumpRunning) && tmp == methaneLevelCritical)) && ((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (!(\old(pumpRunning) == 0) && methAndRunningLastTime == 0)) - InvariantResult [Line: 437]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 743]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 427]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 542]: Loop Invariant Derived loop invariant: ((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || \old(pumpRunning) == 0) && ((!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) || (pumpRunning == \old(pumpRunning) && methAndRunningLastTime == 0)) - InvariantResult [Line: 420]: Loop Invariant Derived loop invariant: (!(1 == systemActive) || \old(pumpRunning) == 0) && (!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) - InvariantResult [Line: 517]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 734]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 638]: Loop Invariant Derived loop invariant: ((!(1 == systemActive) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) && (((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (pumpRunning == 0 && aux-isMethaneAlarm()-aux == methaneLevelCritical)) || !(methAndRunningLastTime == 0)) - InvariantResult [Line: 578]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methAndRunningLastTime == 0)) && (((pumpRunning == \old(pumpRunning) || !(1 == systemActive)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) - InvariantResult [Line: 600]: Loop Invariant Derived loop invariant: ((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) && (((((pumpRunning == \old(pumpRunning) && methaneLevelCritical == 0) && tmp == methaneLevelCritical) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((pumpRunning == 0 && !(tmp == 0)) && tmp == methaneLevelCritical)) - InvariantResult [Line: 517]: Loop Invariant Derived loop invariant: ((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && 1 == systemActive RESULT: Ultimate proved your program to be correct! [2022-11-19 07:53:07,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_87a12e48-18ef-45be-8e23-33c9e9330947/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