./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec2_product38.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/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_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec2_product38.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/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_e76750f9-9578-4962-89a8-eb3d3b7c8065/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 ca9ad45e9cd0fa7cfc478092837003ff1c91f26680d4fb1c37c440560090c9e6 --- 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 07:57:42,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:57:42,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:57:42,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:57:42,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:57:42,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:57:42,041 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:57:42,046 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:57:42,048 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:57:42,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:57:42,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:57:42,054 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:57:42,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:57:42,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:57:42,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:57:42,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:57:42,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:57:42,068 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:57:42,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:57:42,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:57:42,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:57:42,078 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:57:42,079 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:57:42,084 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:57:42,088 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:57:42,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:57:42,095 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:57:42,096 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:57:42,096 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:57:42,097 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:57:42,097 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:57:42,098 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:57:42,099 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:57:42,100 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:57:42,101 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:57:42,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:57:42,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:57:42,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:57:42,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:57:42,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:57:42,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:57:42,108 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:57:42,145 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:57:42,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:57:42,150 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:57:42,150 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:57:42,151 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:57:42,151 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:57:42,151 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:57:42,151 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:57:42,152 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:57:42,152 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:57:42,153 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:57:42,153 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:57:42,153 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:57:42,154 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:57:42,154 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:57:42,154 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:57:42,154 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:57:42,154 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:57:42,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:57:42,155 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:57:42,156 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:57:42,156 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:57:42,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:57:42,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:57:42,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:57:42,157 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:57:42,157 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:57:42,157 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:57:42,157 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:57:42,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:57:42,158 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:57:42,158 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:57:42,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:57:42,159 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:57:42,159 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:57:42,159 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:57:42,159 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:57:42,160 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:57:42,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:57:42,160 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:57:42,160 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:57:42,161 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_e76750f9-9578-4962-89a8-eb3d3b7c8065/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca9ad45e9cd0fa7cfc478092837003ff1c91f26680d4fb1c37c440560090c9e6 [2022-11-19 07:57:42,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:57:42,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:57:42,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:57:42,476 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:57:42,477 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:57:42,478 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/minepump_spec2_product38.cil.c [2022-11-19 07:57:42,563 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/data/4548ac3f4/1370dbcfe41149d19067f895105fea08/FLAGca851648c [2022-11-19 07:57:43,138 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:57:43,139 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/sv-benchmarks/c/product-lines/minepump_spec2_product38.cil.c [2022-11-19 07:57:43,153 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/data/4548ac3f4/1370dbcfe41149d19067f895105fea08/FLAGca851648c [2022-11-19 07:57:43,453 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/data/4548ac3f4/1370dbcfe41149d19067f895105fea08 [2022-11-19 07:57:43,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:57:43,458 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:57:43,463 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:57:43,464 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:57:43,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:57:43,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:43" (1/1) ... [2022-11-19 07:57:43,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee24eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43, skipping insertion in model container [2022-11-19 07:57:43,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:43" (1/1) ... [2022-11-19 07:57:43,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:57:43,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:57:43,752 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_e76750f9-9578-4962-89a8-eb3d3b7c8065/sv-benchmarks/c/product-lines/minepump_spec2_product38.cil.c[1605,1618] [2022-11-19 07:57:43,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:57:43,913 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:57:43,927 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_e76750f9-9578-4962-89a8-eb3d3b7c8065/sv-benchmarks/c/product-lines/minepump_spec2_product38.cil.c[1605,1618] [2022-11-19 07:57:43,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:57:43,993 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:57:43,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43 WrapperNode [2022-11-19 07:57:43,994 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:57:43,995 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:57:43,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:57:43,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:57:44,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43" (1/1) ... [2022-11-19 07:57:44,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43" (1/1) ... [2022-11-19 07:57:44,051 INFO L138 Inliner]: procedures = 55, calls = 99, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 194 [2022-11-19 07:57:44,052 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:57:44,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:57:44,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:57:44,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:57:44,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43" (1/1) ... [2022-11-19 07:57:44,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43" (1/1) ... [2022-11-19 07:57:44,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43" (1/1) ... [2022-11-19 07:57:44,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43" (1/1) ... [2022-11-19 07:57:44,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43" (1/1) ... [2022-11-19 07:57:44,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43" (1/1) ... [2022-11-19 07:57:44,075 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43" (1/1) ... [2022-11-19 07:57:44,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43" (1/1) ... [2022-11-19 07:57:44,078 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:57:44,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:57:44,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:57:44,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:57:44,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43" (1/1) ... [2022-11-19 07:57:44,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:57:44,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:57:44,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:57:44,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:57:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:57:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2022-11-19 07:57:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2022-11-19 07:57:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 07:57:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 07:57:44,184 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 07:57:44,184 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 07:57:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2022-11-19 07:57:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2022-11-19 07:57:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 07:57:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 07:57:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2022-11-19 07:57:44,185 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2022-11-19 07:57:44,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:57:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2022-11-19 07:57:44,186 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2022-11-19 07:57:44,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:57:44,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:57:44,311 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:57:44,314 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:57:44,676 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:57:44,787 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:57:44,788 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 07:57:44,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:44 BoogieIcfgContainer [2022-11-19 07:57:44,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:57:44,793 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:57:44,793 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:57:44,798 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:57:44,798 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:43" (1/3) ... [2022-11-19 07:57:44,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ca768a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:44, skipping insertion in model container [2022-11-19 07:57:44,799 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:43" (2/3) ... [2022-11-19 07:57:44,799 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25ca768a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:44, skipping insertion in model container [2022-11-19 07:57:44,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:44" (3/3) ... [2022-11-19 07:57:44,801 INFO L112 eAbstractionObserver]: Analyzing ICFG minepump_spec2_product38.cil.c [2022-11-19 07:57:44,832 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:57:44,833 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:57:44,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:57:44,907 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;@56f17086, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:57:44,908 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:57:44,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-19 07:57:44,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-19 07:57:44,926 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:44,927 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 07:57:44,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:44,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:44,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1323498237, now seen corresponding path program 1 times [2022-11-19 07:57:44,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:44,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686241557] [2022-11-19 07:57:44,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:44,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:45,189 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 07:57:45,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:45,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686241557] [2022-11-19 07:57:45,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686241557] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:45,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:45,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:57:45,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169178816] [2022-11-19 07:57:45,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:45,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:57:45,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:45,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:57:45,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:57:45,238 INFO L87 Difference]: Start difference. First operand has 58 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 45 states have internal predecessors, (53), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) 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 07:57:45,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:45,352 INFO L93 Difference]: Finished difference Result 114 states and 155 transitions. [2022-11-19 07:57:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:57:45,354 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 07:57:45,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:45,369 INFO L225 Difference]: With dead ends: 114 [2022-11-19 07:57:45,370 INFO L226 Difference]: Without dead ends: 53 [2022-11-19 07:57:45,374 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 07:57:45,378 INFO L413 NwaCegarLoop]: 57 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, 57 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 07:57:45,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 57 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:57:45,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-19 07:57:45,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2022-11-19 07:57:45,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 41 states have internal predecessors, (45), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2022-11-19 07:57:45,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2022-11-19 07:57:45,441 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 17 [2022-11-19 07:57:45,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:45,442 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2022-11-19 07:57:45,444 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 07:57:45,444 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2022-11-19 07:57:45,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 07:57:45,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:45,448 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 07:57:45,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:57:45,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:45,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:45,450 INFO L85 PathProgramCache]: Analyzing trace with hash -166525126, now seen corresponding path program 1 times [2022-11-19 07:57:45,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:45,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291969304] [2022-11-19 07:57:45,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:45,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:45,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:45,609 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 07:57:45,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:45,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291969304] [2022-11-19 07:57:45,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291969304] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:45,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:45,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:57:45,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660004106] [2022-11-19 07:57:45,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:45,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:45,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:45,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:45,615 INFO L87 Difference]: Start difference. First operand 53 states and 68 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 07:57:45,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:45,675 INFO L93 Difference]: Finished difference Result 83 states and 107 transitions. [2022-11-19 07:57:45,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:45,676 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 07:57:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:45,679 INFO L225 Difference]: With dead ends: 83 [2022-11-19 07:57:45,679 INFO L226 Difference]: Without dead ends: 45 [2022-11-19 07:57:45,684 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 07:57:45,686 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 7 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:45,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 77 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:57:45,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2022-11-19 07:57:45,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2022-11-19 07:57:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 36 states have internal predecessors, (39), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (9), 7 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-19 07:57:45,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 57 transitions. [2022-11-19 07:57:45,705 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 57 transitions. Word has length 18 [2022-11-19 07:57:45,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:45,706 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 57 transitions. [2022-11-19 07:57:45,707 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 07:57:45,707 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 57 transitions. [2022-11-19 07:57:45,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-19 07:57:45,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:45,709 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 07:57:45,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:57:45,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:45,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:45,715 INFO L85 PathProgramCache]: Analyzing trace with hash -914581479, now seen corresponding path program 1 times [2022-11-19 07:57:45,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:45,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560647429] [2022-11-19 07:57:45,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:45,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:45,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:45,876 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 07:57:45,882 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:45,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560647429] [2022-11-19 07:57:45,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560647429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:45,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:45,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:57:45,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077452511] [2022-11-19 07:57:45,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:45,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:57:45,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:45,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:57:45,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:57:45,885 INFO L87 Difference]: Start difference. First operand 45 states and 57 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:57:45,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:45,982 INFO L93 Difference]: Finished difference Result 88 states and 114 transitions. [2022-11-19 07:57:45,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:57:45,983 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2022-11-19 07:57:45,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:45,985 INFO L225 Difference]: With dead ends: 88 [2022-11-19 07:57:45,985 INFO L226 Difference]: Without dead ends: 86 [2022-11-19 07:57:45,986 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 07:57:45,987 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 37 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 91 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 07:57:45,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 91 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:57:45,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-19 07:57:46,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-19 07:57:46,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 55 states have (on average 1.3454545454545455) internal successors, (74), 68 states have internal predecessors, (74), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (20), 14 states have call predecessors, (20), 18 states have call successors, (20) [2022-11-19 07:57:46,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 112 transitions. [2022-11-19 07:57:46,011 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 112 transitions. Word has length 20 [2022-11-19 07:57:46,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:46,012 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 112 transitions. [2022-11-19 07:57:46,012 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), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 07:57:46,012 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 112 transitions. [2022-11-19 07:57:46,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-19 07:57:46,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:46,020 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:57:46,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:57:46,020 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:46,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:46,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1907760329, now seen corresponding path program 1 times [2022-11-19 07:57:46,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:46,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076651621] [2022-11-19 07:57:46,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:46,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:46,329 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:57:46,329 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:46,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076651621] [2022-11-19 07:57:46,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076651621] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:57:46,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825212214] [2022-11-19 07:57:46,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:46,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:57:46,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:57:46,334 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:57:46,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:57:46,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:46,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 07:57:46,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:57:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:57:46,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:57:46,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [825212214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:46,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:57:46,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2022-11-19 07:57:46,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009303612] [2022-11-19 07:57:46,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:46,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:57:46,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:46,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:57:46,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:57:46,611 INFO L87 Difference]: Start difference. First operand 86 states and 112 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:57:46,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:46,704 INFO L93 Difference]: Finished difference Result 170 states and 226 transitions. [2022-11-19 07:57:46,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:57:46,705 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2022-11-19 07:57:46,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:46,711 INFO L225 Difference]: With dead ends: 170 [2022-11-19 07:57:46,711 INFO L226 Difference]: Without dead ends: 86 [2022-11-19 07:57:46,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:57:46,721 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 47 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:46,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 55 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:57:46,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2022-11-19 07:57:46,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2022-11-19 07:57:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 55 states have (on average 1.309090909090909) internal successors, (72), 68 states have internal predecessors, (72), 18 states have call successors, (18), 12 states have call predecessors, (18), 12 states have return successors, (20), 14 states have call predecessors, (20), 18 states have call successors, (20) [2022-11-19 07:57:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 110 transitions. [2022-11-19 07:57:46,752 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 110 transitions. Word has length 39 [2022-11-19 07:57:46,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:46,753 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 110 transitions. [2022-11-19 07:57:46,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-19 07:57:46,753 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 110 transitions. [2022-11-19 07:57:46,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-19 07:57:46,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:46,755 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] [2022-11-19 07:57:46,766 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:57:46,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-19 07:57:46,961 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:46,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:46,962 INFO L85 PathProgramCache]: Analyzing trace with hash -2088862183, now seen corresponding path program 1 times [2022-11-19 07:57:46,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:46,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851911415] [2022-11-19 07:57:46,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:46,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:47,066 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 07:57:47,066 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:47,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851911415] [2022-11-19 07:57:47,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851911415] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:47,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:47,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:57:47,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466801984] [2022-11-19 07:57:47,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:47,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:57:47,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:47,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:57:47,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:57:47,069 INFO L87 Difference]: Start difference. First operand 86 states and 110 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-19 07:57:47,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:47,171 INFO L93 Difference]: Finished difference Result 220 states and 293 transitions. [2022-11-19 07:57:47,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:57:47,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 53 [2022-11-19 07:57:47,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:47,174 INFO L225 Difference]: With dead ends: 220 [2022-11-19 07:57:47,178 INFO L226 Difference]: Without dead ends: 136 [2022-11-19 07:57:47,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:57:47,183 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 38 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:47,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 148 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:57:47,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-19 07:57:47,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 124. [2022-11-19 07:57:47,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 81 states have (on average 1.2469135802469136) internal successors, (101), 92 states have internal predecessors, (101), 22 states have call successors, (22), 20 states have call predecessors, (22), 20 states have return successors, (32), 21 states have call predecessors, (32), 22 states have call successors, (32) [2022-11-19 07:57:47,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 155 transitions. [2022-11-19 07:57:47,208 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 155 transitions. Word has length 53 [2022-11-19 07:57:47,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:47,209 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 155 transitions. [2022-11-19 07:57:47,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-19 07:57:47,209 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 155 transitions. [2022-11-19 07:57:47,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-19 07:57:47,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:47,211 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:57:47,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:57:47,212 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:47,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:47,212 INFO L85 PathProgramCache]: Analyzing trace with hash -691239881, now seen corresponding path program 1 times [2022-11-19 07:57:47,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:47,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360958852] [2022-11-19 07:57:47,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:47,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:47,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:47,333 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 07:57:47,333 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:47,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360958852] [2022-11-19 07:57:47,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360958852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:47,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:57:47,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:57:47,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80535697] [2022-11-19 07:57:47,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:47,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:57:47,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:47,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:57:47,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:57:47,336 INFO L87 Difference]: Start difference. First operand 124 states and 155 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:57:47,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:47,452 INFO L93 Difference]: Finished difference Result 239 states and 310 transitions. [2022-11-19 07:57:47,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:57:47,454 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 55 [2022-11-19 07:57:47,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:47,458 INFO L225 Difference]: With dead ends: 239 [2022-11-19 07:57:47,458 INFO L226 Difference]: Without dead ends: 117 [2022-11-19 07:57:47,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:57:47,465 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 39 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:47,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 117 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:57:47,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-19 07:57:47,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2022-11-19 07:57:47,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 76 states have (on average 1.1710526315789473) internal successors, (89), 85 states have internal predecessors, (89), 20 states have call successors, (20), 18 states have call predecessors, (20), 18 states have return successors, (27), 20 states have call predecessors, (27), 20 states have call successors, (27) [2022-11-19 07:57:47,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 136 transitions. [2022-11-19 07:57:47,504 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 136 transitions. Word has length 55 [2022-11-19 07:57:47,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:47,506 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 136 transitions. [2022-11-19 07:57:47,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-19 07:57:47,506 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 136 transitions. [2022-11-19 07:57:47,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-19 07:57:47,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:47,519 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-19 07:57:47,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:57:47,520 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:47,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:47,520 INFO L85 PathProgramCache]: Analyzing trace with hash -755845242, now seen corresponding path program 1 times [2022-11-19 07:57:47,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:47,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488728136] [2022-11-19 07:57:47,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:47,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:47,827 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:57:47,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:47,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488728136] [2022-11-19 07:57:47,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488728136] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:57:47,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124959962] [2022-11-19 07:57:47,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:47,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:57:47,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:57:47,829 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:57:47,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:57:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:47,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 07:57:47,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:57:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 07:57:48,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:57:48,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124959962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:48,354 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:57:48,354 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 15 [2022-11-19 07:57:48,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564960910] [2022-11-19 07:57:48,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:48,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:57:48,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:57:48,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-19 07:57:48,357 INFO L87 Difference]: Start difference. First operand 115 states and 136 transitions. Second operand has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-19 07:57:48,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:48,847 INFO L93 Difference]: Finished difference Result 309 states and 375 transitions. [2022-11-19 07:57:48,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 07:57:48,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) Word has length 62 [2022-11-19 07:57:48,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:48,850 INFO L225 Difference]: With dead ends: 309 [2022-11-19 07:57:48,850 INFO L226 Difference]: Without dead ends: 196 [2022-11-19 07:57:48,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:57:48,851 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 137 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:48,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 164 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:57:48,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2022-11-19 07:57:48,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 157. [2022-11-19 07:57:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 106 states have (on average 1.1603773584905661) internal successors, (123), 116 states have internal predecessors, (123), 25 states have call successors, (25), 23 states have call predecessors, (25), 25 states have return successors, (32), 25 states have call predecessors, (32), 25 states have call successors, (32) [2022-11-19 07:57:48,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2022-11-19 07:57:48,890 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 62 [2022-11-19 07:57:48,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:48,891 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2022-11-19 07:57:48,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-19 07:57:48,891 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2022-11-19 07:57:48,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-19 07:57:48,893 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:48,893 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:57:48,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:57:49,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:57:49,108 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:49,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:49,109 INFO L85 PathProgramCache]: Analyzing trace with hash 213876582, now seen corresponding path program 1 times [2022-11-19 07:57:49,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:49,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480353425] [2022-11-19 07:57:49,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:49,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:49,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:49,268 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:57:49,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:49,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480353425] [2022-11-19 07:57:49,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480353425] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:57:49,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [25934869] [2022-11-19 07:57:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:49,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:57:49,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:57:49,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:57:49,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:57:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:49,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 07:57:49,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:57:49,676 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 07:57:49,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:57:49,881 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 07:57:49,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [25934869] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 07:57:49,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 07:57:49,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 5] total 11 [2022-11-19 07:57:49,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176274374] [2022-11-19 07:57:49,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:49,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:57:49,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:49,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:57:49,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-19 07:57:49,884 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:57:50,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:50,055 INFO L93 Difference]: Finished difference Result 423 states and 491 transitions. [2022-11-19 07:57:50,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:57:50,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 65 [2022-11-19 07:57:50,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:50,058 INFO L225 Difference]: With dead ends: 423 [2022-11-19 07:57:50,058 INFO L226 Difference]: Without dead ends: 268 [2022-11-19 07:57:50,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 125 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:57:50,060 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 29 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:50,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 212 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:57:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-19 07:57:50,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 255. [2022-11-19 07:57:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 174 states have (on average 1.1436781609195403) internal successors, (199), 187 states have internal predecessors, (199), 40 states have call successors, (40), 37 states have call predecessors, (40), 40 states have return successors, (50), 40 states have call predecessors, (50), 40 states have call successors, (50) [2022-11-19 07:57:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 289 transitions. [2022-11-19 07:57:50,114 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 289 transitions. Word has length 65 [2022-11-19 07:57:50,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:50,114 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 289 transitions. [2022-11-19 07:57:50,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 07:57:50,115 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 289 transitions. [2022-11-19 07:57:50,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-19 07:57:50,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:50,117 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:57:50,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:57:50,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:57:50,323 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:50,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash -304665198, now seen corresponding path program 1 times [2022-11-19 07:57:50,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:50,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162610569] [2022-11-19 07:57:50,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:50,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:57:50,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:50,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162610569] [2022-11-19 07:57:50,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162610569] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:57:50,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443552516] [2022-11-19 07:57:50,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:50,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:57:50,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:57:50,643 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:57:50,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:57:50,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:50,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-19 07:57:50,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:57:50,850 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:57:50,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:57:50,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443552516] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:50,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:57:50,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 14 [2022-11-19 07:57:50,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194487978] [2022-11-19 07:57:50,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:50,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:57:50,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:50,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:57:50,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:57:50,853 INFO L87 Difference]: Start difference. First operand 255 states and 289 transitions. Second operand has 9 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 3 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-19 07:57:51,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:51,219 INFO L93 Difference]: Finished difference Result 487 states and 568 transitions. [2022-11-19 07:57:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 07:57:51,220 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 3 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) Word has length 68 [2022-11-19 07:57:51,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:51,223 INFO L225 Difference]: With dead ends: 487 [2022-11-19 07:57:51,224 INFO L226 Difference]: Without dead ends: 332 [2022-11-19 07:57:51,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2022-11-19 07:57:51,227 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 45 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:51,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 472 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:57:51,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-19 07:57:51,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 328. [2022-11-19 07:57:51,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 226 states have (on average 1.1327433628318584) internal successors, (256), 239 states have internal predecessors, (256), 51 states have call successors, (51), 48 states have call predecessors, (51), 50 states have return successors, (67), 50 states have call predecessors, (67), 51 states have call successors, (67) [2022-11-19 07:57:51,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 374 transitions. [2022-11-19 07:57:51,290 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 374 transitions. Word has length 68 [2022-11-19 07:57:51,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:51,293 INFO L495 AbstractCegarLoop]: Abstraction has 328 states and 374 transitions. [2022-11-19 07:57:51,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 3 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (9), 5 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-19 07:57:51,297 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 374 transitions. [2022-11-19 07:57:51,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 07:57:51,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:57:51,299 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:57:51,310 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:57:51,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:57:51,504 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:57:51,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:57:51,505 INFO L85 PathProgramCache]: Analyzing trace with hash 632776250, now seen corresponding path program 1 times [2022-11-19 07:57:51,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:57:51,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821553235] [2022-11-19 07:57:51,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:51,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:57:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:51,730 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:57:51,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:57:51,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821553235] [2022-11-19 07:57:51,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821553235] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:57:51,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706794348] [2022-11-19 07:57:51,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:57:51,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:57:51,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:57:51,733 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:57:51,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:57:51,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:57:51,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-19 07:57:51,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:57:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:57:51,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:57:51,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1706794348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:57:51,919 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:57:51,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 14 [2022-11-19 07:57:51,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535753105] [2022-11-19 07:57:51,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:57:51,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:57:51,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:57:51,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:57:51,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:57:51,922 INFO L87 Difference]: Start difference. First operand 328 states and 374 transitions. Second operand has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:57:52,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:57:52,235 INFO L93 Difference]: Finished difference Result 660 states and 762 transitions. [2022-11-19 07:57:52,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 07:57:52,236 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) Word has length 71 [2022-11-19 07:57:52,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:57:52,238 INFO L225 Difference]: With dead ends: 660 [2022-11-19 07:57:52,238 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:57:52,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:57:52,240 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 45 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:57:52,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 311 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:57:52,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:57:52,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:57:52,242 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 07:57:52,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:57:52,244 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 71 [2022-11-19 07:57:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:57:52,244 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:57:52,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 6.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 4 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-19 07:57:52,244 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:57:52,245 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:57:52,247 INFO L805 garLoopResultBuilder]: Registering result SAFE for location timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 07:57:52,258 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:57:52,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:57:52,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 07:57:56,620 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__baseEXIT(lines 173 179) no Hoare annotation was computed. [2022-11-19 07:57:56,620 INFO L902 garLoopResultBuilder]: At program point processEnvironment__wrappee__baseFINAL(lines 173 179) the Hoare annotation is: true [2022-11-19 07:57:56,620 INFO L895 garLoopResultBuilder]: At program point changeMethaneLevelENTRY(lines 526 537) 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 07:57:56,621 INFO L899 garLoopResultBuilder]: For program point changeMethaneLevelEXIT(lines 526 537) no Hoare annotation was computed. [2022-11-19 07:57:56,621 INFO L899 garLoopResultBuilder]: For program point L417(lines 417 421) no Hoare annotation was computed. [2022-11-19 07:57:56,621 INFO L902 garLoopResultBuilder]: At program point L417-1(lines 417 421) the Hoare annotation is: true [2022-11-19 07:57:56,621 INFO L899 garLoopResultBuilder]: For program point cleanupEXIT(lines 403 432) no Hoare annotation was computed. [2022-11-19 07:57:56,621 INFO L902 garLoopResultBuilder]: At program point cleanupENTRY(lines 403 432) the Hoare annotation is: true [2022-11-19 07:57:56,621 INFO L902 garLoopResultBuilder]: At program point L413-2(lines 413 427) the Hoare annotation is: true [2022-11-19 07:57:56,621 INFO L902 garLoopResultBuilder]: At program point L409(line 409) the Hoare annotation is: true [2022-11-19 07:57:56,621 INFO L899 garLoopResultBuilder]: For program point L409-1(line 409) no Hoare annotation was computed. [2022-11-19 07:57:56,621 INFO L902 garLoopResultBuilder]: At program point L428(lines 403 432) the Hoare annotation is: true [2022-11-19 07:57:56,621 INFO L899 garLoopResultBuilder]: For program point L424(line 424) no Hoare annotation was computed. [2022-11-19 07:57:56,622 INFO L895 garLoopResultBuilder]: At program point L221(line 221) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= |old(~pumpRunning~0)| 0))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1) (or (not .cse2) .cse0 .cse1) (or .cse1 .cse2 (and (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and (not (< 0 ~waterLevel~0)) (<= ~waterLevel~0 |old(~waterLevel~0)|))) (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0) (not (= ~pumpRunning~0 0)) (= ~methaneLevelCritical~0 0))))) [2022-11-19 07:57:56,622 INFO L895 garLoopResultBuilder]: At program point L226(line 226) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0)))) (and (or (not (= |old(~methAndRunningLastTime~0)| 0)) .cse0 (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (<= ~waterLevel~0 |old(~waterLevel~0)|))) (or .cse0 (= |old(~pumpRunning~0)| 0)))) [2022-11-19 07:57:56,622 INFO L895 garLoopResultBuilder]: At program point L226-1(lines 207 231) the Hoare annotation is: (let ((.cse6 (= ~pumpRunning~0 0)) (.cse9 (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0)) (.cse7 (= 1 ~systemActive~0)) (.cse5 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (let ((.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse8 (and .cse6 (not (= |timeShift_processEnvironment_~tmp~2#1| 0)) .cse9 .cse7 .cse5)) (.cse4 (not .cse6)) (.cse2 (not .cse7)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) .cse1 .cse2 (and .cse3 .cse4 (<= 2 ~waterLevel~0) .cse5) (and .cse6 (<= ~waterLevel~0 1) .cse7 .cse5)) (or .cse1 .cse3 .cse8 .cse2 .cse0) (or .cse8 .cse2 .cse0 (and .cse9 .cse4 .cse5)) (or (= ~methaneLevelCritical~0 0) .cse2 .cse0 (and .cse6 .cse7))))) [2022-11-19 07:57:56,622 INFO L899 garLoopResultBuilder]: For program point L160-1(lines 160 166) no Hoare annotation was computed. [2022-11-19 07:57:56,622 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 92) no Hoare annotation was computed. [2022-11-19 07:57:56,622 INFO L895 garLoopResultBuilder]: At program point L78(lines 78 95) the Hoare annotation is: (let ((.cse3 (= ~pumpRunning~0 0)) (.cse10 (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0)) (.cse4 (= 1 ~systemActive~0)) (.cse5 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~0#1| ~methaneLevelCritical~0)) (.cse6 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (let ((.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse7 (= ~methAndRunningLastTime~0 0)) (.cse9 (and .cse3 (not (= |timeShift_processEnvironment_~tmp~2#1| 0)) .cse10 .cse4 .cse5 .cse6)) (.cse2 (not .cse4)) (.cse0 (= |old(~pumpRunning~0)| 0)) (.cse8 (not .cse3))) (and (or (not .cse0) .cse1 .cse2 (and .cse3 (<= ~waterLevel~0 1) .cse4 .cse5 .cse6) (and .cse7 .cse8 (<= 2 ~waterLevel~0) .cse5 .cse6)) (or .cse1 .cse7 .cse9 .cse2 .cse0) (or .cse9 .cse2 .cse0 (and .cse10 .cse8 .cse5 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~0#1| 0) .cse6))))) [2022-11-19 07:57:56,623 INFO L895 garLoopResultBuilder]: At program point L78-1(lines 70 98) the Hoare annotation is: (let ((.cse0 (= ~pumpRunning~0 0)) (.cse3 (= 1 ~systemActive~0)) (.cse7 (= |old(~pumpRunning~0)| 0))) (let ((.cse9 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~0#1| 0)) (.cse4 (= |timeShift___utac_acc__Specification2_spec__2_~tmp~0#1| ~methaneLevelCritical~0)) (.cse10 (not .cse7)) (.cse11 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse6 (not .cse3)) (.cse13 (<= ~waterLevel~0 1)) (.cse2 (= ~methAndRunningLastTime~0 0)) (.cse8 (not .cse0)) (.cse12 (<= 2 ~waterLevel~0)) (.cse5 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (and (let ((.cse1 (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0))) (or (and .cse0 .cse1 .cse2 .cse3 (not (= ~methaneLevelCritical~0 0)) .cse4 .cse5) .cse6 .cse7 (and .cse1 .cse2 .cse8 .cse3 .cse4 .cse9 .cse5))) (or .cse10 (and .cse4 .cse9) .cse11 (and .cse8 .cse12 .cse4 (= ~pumpRunning~0 |timeShift___utac_acc__Specification2_spec__2_~tmp___0~0#1|) .cse5) .cse6 (and .cse0 .cse2 .cse13 .cse3 .cse4 .cse5)) (or .cse10 .cse11 .cse6 (not (<= ~methaneLevelCritical~0 0)) (and .cse0 .cse2 .cse13 .cse3 .cse5) (not (<= 0 ~methaneLevelCritical~0)) (and .cse2 .cse8 .cse12 .cse3 .cse5))))) [2022-11-19 07:57:56,623 INFO L899 garLoopResultBuilder]: For program point L153-1(lines 152 171) no Hoare annotation was computed. [2022-11-19 07:57:56,623 INFO L895 garLoopResultBuilder]: At program point L215(lines 215 223) the Hoare annotation is: (let ((.cse2 (= |old(~pumpRunning~0)| 0)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1) (or .cse1 .cse2 (and (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and (not (< 0 ~waterLevel~0)) (<= ~waterLevel~0 |old(~waterLevel~0)|))) (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0) (not (= ~pumpRunning~0 0)))) (or (not .cse2) .cse0 .cse1))) [2022-11-19 07:57:56,623 INFO L895 garLoopResultBuilder]: At program point L54(line 54) 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 07:57:56,623 INFO L899 garLoopResultBuilder]: For program point L211(lines 211 228) no Hoare annotation was computed. [2022-11-19 07:57:56,623 INFO L899 garLoopResultBuilder]: For program point L83(lines 83 89) no Hoare annotation was computed. [2022-11-19 07:57:56,623 INFO L895 garLoopResultBuilder]: At program point L253(line 253) the Hoare annotation is: (let ((.cse2 (= |old(~pumpRunning~0)| 0)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1) (or .cse1 .cse2 (and (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and (not (< 0 ~waterLevel~0)) (<= ~waterLevel~0 |old(~waterLevel~0)|))) (not (= ~pumpRunning~0 0)))) (or (not .cse2) .cse0 .cse1))) [2022-11-19 07:57:56,624 INFO L895 garLoopResultBuilder]: At program point L253-1(line 253) the Hoare annotation is: (let ((.cse2 (= |old(~pumpRunning~0)| 0)) (.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0)))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1) (or (and (or (<= (+ ~waterLevel~0 1) |old(~waterLevel~0)|) (and (not (< 0 ~waterLevel~0)) (<= ~waterLevel~0 |old(~waterLevel~0)|))) (not (= ~pumpRunning~0 0)) (= |timeShift_isMethaneAlarm_#t~ret9#1| ~methaneLevelCritical~0)) .cse1 .cse2) (or (not .cse2) .cse0 .cse1))) [2022-11-19 07:57:56,624 INFO L895 garLoopResultBuilder]: At program point timeShiftENTRY(lines 149 172) the Hoare annotation is: (let ((.cse0 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse1 (not (= 1 ~systemActive~0))) (.cse2 (= |old(~pumpRunning~0)| 0)) (.cse3 (= ~pumpRunning~0 0)) (.cse4 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (and (or .cse0 (= ~methAndRunningLastTime~0 0) .cse1) (or (not .cse2) .cse0 .cse1 (and .cse3 .cse4)) (or .cse1 .cse2 (and (not .cse3) .cse4)))) [2022-11-19 07:57:56,624 INFO L895 garLoopResultBuilder]: At program point L76(line 76) the Hoare annotation is: (let ((.cse6 (= ~pumpRunning~0 0)) (.cse9 (= |timeShift_processEnvironment_~tmp~2#1| ~methaneLevelCritical~0)) (.cse7 (= 1 ~systemActive~0)) (.cse5 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (let ((.cse1 (not (= |old(~methAndRunningLastTime~0)| 0))) (.cse3 (= ~methAndRunningLastTime~0 0)) (.cse8 (and .cse6 (not (= |timeShift_processEnvironment_~tmp~2#1| 0)) .cse9 .cse7 .cse5)) (.cse4 (not .cse6)) (.cse2 (not .cse7)) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) .cse1 .cse2 (and .cse3 .cse4 (<= 2 ~waterLevel~0) .cse5) (and .cse6 (<= ~waterLevel~0 1) .cse7 .cse5)) (or .cse1 .cse3 .cse8 .cse2 .cse0) (or .cse8 .cse2 .cse0 (and .cse9 .cse4 .cse5)) (or (= ~methaneLevelCritical~0 0) .cse2 .cse0 (and .cse6 .cse7))))) [2022-11-19 07:57:56,624 INFO L899 garLoopResultBuilder]: For program point L76-1(line 76) no Hoare annotation was computed. [2022-11-19 07:57:56,624 INFO L899 garLoopResultBuilder]: For program point timeShiftEXIT(lines 149 172) no Hoare annotation was computed. [2022-11-19 07:57:56,624 INFO L899 garLoopResultBuilder]: For program point timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2022-11-19 07:57:56,624 INFO L902 garLoopResultBuilder]: At program point isMethaneLevelCriticalENTRY(lines 538 546) the Hoare annotation is: true [2022-11-19 07:57:56,624 INFO L899 garLoopResultBuilder]: For program point isMethaneLevelCriticalEXIT(lines 538 546) no Hoare annotation was computed. [2022-11-19 07:57:56,625 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-11-19 07:57:56,625 INFO L895 garLoopResultBuilder]: At program point L383-2(lines 375 388) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~5#1| 1))) (or (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2) (and (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2))) [2022-11-19 07:57:56,625 INFO L899 garLoopResultBuilder]: For program point L346(lines 345 392) no Hoare annotation was computed. [2022-11-19 07:57:56,625 INFO L895 garLoopResultBuilder]: At program point L367(line 367) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~5#1| 1))) (or (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2) (and (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2))) [2022-11-19 07:57:56,625 INFO L902 garLoopResultBuilder]: At program point L396(lines 335 400) the Hoare annotation is: true [2022-11-19 07:57:56,625 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 361) no Hoare annotation was computed. [2022-11-19 07:57:56,625 INFO L899 garLoopResultBuilder]: For program point L355-1(lines 355 361) no Hoare annotation was computed. [2022-11-19 07:57:56,625 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 07:57:56,625 INFO L895 garLoopResultBuilder]: At program point L393(lines 344 394) the Hoare annotation is: false [2022-11-19 07:57:56,625 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 371) no Hoare annotation was computed. [2022-11-19 07:57:56,626 INFO L895 garLoopResultBuilder]: At program point L365-1(lines 365 371) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~5#1| 1))) (or (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2) (and (not (= ~pumpRunning~0 0)) .cse0 .cse1 .cse2))) [2022-11-19 07:57:56,626 INFO L895 garLoopResultBuilder]: At program point L390(lines 345 392) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~5#1| 1))) (or (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2) (and (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2))) [2022-11-19 07:57:56,626 INFO L895 garLoopResultBuilder]: At program point L485(lines 485 492) the Hoare annotation is: (and (= ~pumpRunning~0 0) (= ~methAndRunningLastTime~0 0) (= ~methaneLevelCritical~0 0) (<= ~waterLevel~0 1) (= 1 ~systemActive~0) (= |ULTIMATE.start_main_~tmp~5#1| 1)) [2022-11-19 07:57:56,626 INFO L895 garLoopResultBuilder]: At program point L357(line 357) the Hoare annotation is: (let ((.cse0 (= 1 ~systemActive~0)) (.cse1 (= |ULTIMATE.start_test_~splverifierCounter~0#1| 0)) (.cse2 (= |ULTIMATE.start_main_~tmp~5#1| 1))) (or (and (= ~methAndRunningLastTime~0 0) .cse0 .cse1 .cse2) (and (not (= ~pumpRunning~0 0)) .cse0 (not (= ~methaneLevelCritical~0 0)) .cse1 .cse2))) [2022-11-19 07:57:56,626 INFO L902 garLoopResultBuilder]: At program point L485-2(lines 485 492) the Hoare annotation is: true [2022-11-19 07:57:56,626 INFO L895 garLoopResultBuilder]: At program point processEnvironment__wrappee__highWaterSensorENTRY(lines 181 205) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) .cse1 .cse2 (not (= ~methAndRunningLastTime~0 0))) (or (not .cse1) .cse2 .cse0 (not (= ~methaneLevelCritical~0 0))))) [2022-11-19 07:57:56,626 INFO L895 garLoopResultBuilder]: At program point L195(line 195) 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) (<= ~waterLevel~0 1) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 0)) (not (= ~methAndRunningLastTime~0 0))))) [2022-11-19 07:57:56,631 INFO L895 garLoopResultBuilder]: At program point L189(lines 189 197) the Hoare annotation is: (let ((.cse1 (= |old(~pumpRunning~0)| 0))) (let ((.cse2 (not .cse1)) (.cse0 (not (= 1 ~systemActive~0))) (.cse3 (not (= ~methAndRunningLastTime~0 0)))) (and (or .cse0 .cse1 (not (= ~methaneLevelCritical~0 0))) (or .cse2 (= ~pumpRunning~0 0) .cse0 .cse3) (let ((.cse4 (< ~waterLevel~0 2))) (or .cse2 .cse0 (and .cse4 (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 0)) .cse3 (and (not .cse4) (= |processEnvironment__wrappee__highWaterSensor_~tmp~1#1| 1))))))) [2022-11-19 07:57:56,632 INFO L899 garLoopResultBuilder]: For program point processEnvironment__wrappee__highWaterSensorEXIT(lines 181 205) no Hoare annotation was computed. [2022-11-19 07:57:56,632 INFO L895 garLoopResultBuilder]: At program point L185(lines 185 202) the Hoare annotation is: (let ((.cse1 (= ~pumpRunning~0 0)) (.cse2 (not (= 1 ~systemActive~0))) (.cse0 (= |old(~pumpRunning~0)| 0))) (and (or (not .cse0) .cse1 .cse2 (not (= ~methAndRunningLastTime~0 0))) (or (not .cse1) .cse2 .cse0 (not (= ~methaneLevelCritical~0 0))))) [2022-11-19 07:57:56,632 INFO L895 garLoopResultBuilder]: At program point L200(line 200) 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 (not (= ~pumpRunning~0 0)) .cse1 .cse0 (not (= ~methaneLevelCritical~0 0))))) [2022-11-19 07:57:56,632 INFO L899 garLoopResultBuilder]: For program point L200-1(lines 181 205) no Hoare annotation was computed. [2022-11-19 07:57:56,632 INFO L899 garLoopResultBuilder]: For program point waterRiseEXIT(lines 514 525) no Hoare annotation was computed. [2022-11-19 07:57:56,633 INFO L895 garLoopResultBuilder]: At program point waterRiseENTRY(lines 514 525) the Hoare annotation is: (let ((.cse0 (not (= 1 ~systemActive~0))) (.cse1 (<= ~waterLevel~0 |old(~waterLevel~0)|))) (and (or (= ~pumpRunning~0 0) (= ~methaneLevelCritical~0 0) .cse0 .cse1) (or .cse0 .cse1 (not (= ~methAndRunningLastTime~0 0))))) [2022-11-19 07:57:56,636 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:57:56,638 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:57:56,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:57:56 BoogieIcfgContainer [2022-11-19 07:57:56,679 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:57:56,680 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:57:56,680 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:57:56,680 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:57:56,681 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:44" (3/4) ... [2022-11-19 07:57:56,683 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:57:56,688 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__base [2022-11-19 07:57:56,688 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure changeMethaneLevel [2022-11-19 07:57:56,688 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure cleanup [2022-11-19 07:57:56,689 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure timeShift [2022-11-19 07:57:56,689 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isMethaneLevelCritical [2022-11-19 07:57:56,689 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure processEnvironment__wrappee__highWaterSensor [2022-11-19 07:57:56,689 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure waterRise [2022-11-19 07:57:56,702 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 42 nodes and edges [2022-11-19 07:57:56,702 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2022-11-19 07:57:56,703 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-19 07:57:56,703 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:57:56,704 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:57:56,732 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || (!(pumpRunning == 0) && waterLevel <= \old(waterLevel))) [2022-11-19 07:57:56,733 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || (((methAndRunningLastTime == 0 && !(pumpRunning == 0)) && 2 <= waterLevel) && waterLevel <= \old(waterLevel))) || (((pumpRunning == 0 && waterLevel <= 1) && 1 == systemActive) && waterLevel <= \old(waterLevel))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || ((((pumpRunning == 0 && !(tmp == 0)) && tmp == methaneLevelCritical) && 1 == systemActive) && waterLevel <= \old(waterLevel))) || !(1 == systemActive)) || \old(pumpRunning) == 0)) && (((((((pumpRunning == 0 && !(tmp == 0)) && tmp == methaneLevelCritical) && 1 == systemActive) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((tmp == methaneLevelCritical && !(pumpRunning == 0)) && waterLevel <= \old(waterLevel)))) && (((methaneLevelCritical == 0 || !(1 == systemActive)) || \old(pumpRunning) == 0) || (pumpRunning == 0 && 1 == systemActive)) [2022-11-19 07:57:56,733 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methAndRunningLastTime == 0)) && (((!(pumpRunning == 0) || !(1 == systemActive)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) [2022-11-19 07:57:56,734 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((((pumpRunning == 0 && waterLevel <= 1) && 1 == systemActive) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel))) || ((((methAndRunningLastTime == 0 && !(pumpRunning == 0)) && 2 <= waterLevel) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || (((((pumpRunning == 0 && !(tmp == 0)) && tmp == methaneLevelCritical) && 1 == systemActive) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel))) || !(1 == systemActive)) || \old(pumpRunning) == 0)) && ((((((((pumpRunning == 0 && !(tmp == 0)) && tmp == methaneLevelCritical) && 1 == systemActive) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((((tmp == methaneLevelCritical && !(pumpRunning == 0)) && tmp == methaneLevelCritical) && tmp == 0) && waterLevel <= \old(waterLevel))) [2022-11-19 07:57:56,735 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) && (((((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) && !(pumpRunning == 0)) && aux-isMethaneLevelCritical()-aux == methaneLevelCritical) || !(1 == systemActive)) || \old(pumpRunning) == 0)) && ((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) [2022-11-19 07:57:56,735 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((((pumpRunning == 0 && tmp == methaneLevelCritical) && methAndRunningLastTime == 0) && 1 == systemActive) && !(methaneLevelCritical == 0)) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((((((tmp == methaneLevelCritical && methAndRunningLastTime == 0) && !(pumpRunning == 0)) && 1 == systemActive) && tmp == methaneLevelCritical) && tmp == 0) && waterLevel <= \old(waterLevel))) && (((((!(\old(pumpRunning) == 0) || (tmp == methaneLevelCritical && tmp == 0)) || !(\old(methAndRunningLastTime) == 0)) || ((((!(pumpRunning == 0) && 2 <= waterLevel) && tmp == methaneLevelCritical) && pumpRunning == tmp___0) && waterLevel <= \old(waterLevel))) || !(1 == systemActive)) || (((((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel <= 1) && 1 == systemActive) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel)))) && ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical <= 0)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel <= 1) && 1 == systemActive) && waterLevel <= \old(waterLevel))) || !(0 <= methaneLevelCritical)) || ((((methAndRunningLastTime == 0 && !(pumpRunning == 0)) && 2 <= waterLevel) && 1 == systemActive) && waterLevel <= \old(waterLevel))) [2022-11-19 07:57:56,736 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || (((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) && tmp == methaneLevelCritical) && !(pumpRunning == 0)))) && ((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) [2022-11-19 07:57:56,736 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!(1 == systemActive) || \old(pumpRunning) == 0) && (!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) [2022-11-19 07:57:56,736 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!(1 == systemActive) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methAndRunningLastTime == 0))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (waterLevel < 2 && tmp == 0)) || !(methAndRunningLastTime == 0)) || (!(waterLevel < 2) && tmp == 1)) [2022-11-19 07:57:56,776 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:57:56,776 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:57:56,777 INFO L158 Benchmark]: Toolchain (without parser) took 13318.63ms. Allocated memory was 130.0MB in the beginning and 224.4MB in the end (delta: 94.4MB). Free memory was 95.4MB in the beginning and 164.7MB in the end (delta: -69.3MB). Peak memory consumption was 23.3MB. Max. memory is 16.1GB. [2022-11-19 07:57:56,777 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 86.0MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:57:56,777 INFO L158 Benchmark]: CACSL2BoogieTranslator took 530.70ms. Allocated memory is still 130.0MB. Free memory was 95.1MB in the beginning and 97.6MB in the end (delta: -2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 07:57:56,778 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.44ms. Allocated memory is still 130.0MB. Free memory was 96.9MB in the beginning and 94.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:57:56,778 INFO L158 Benchmark]: Boogie Preprocessor took 25.97ms. Allocated memory is still 130.0MB. Free memory was 94.7MB in the beginning and 93.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:57:56,778 INFO L158 Benchmark]: RCFGBuilder took 711.31ms. Allocated memory is still 130.0MB. Free memory was 93.4MB in the beginning and 69.0MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-19 07:57:56,779 INFO L158 Benchmark]: TraceAbstraction took 11886.84ms. Allocated memory was 130.0MB in the beginning and 224.4MB in the end (delta: 94.4MB). Free memory was 68.3MB in the beginning and 169.9MB in the end (delta: -101.7MB). Peak memory consumption was 96.3MB. Max. memory is 16.1GB. [2022-11-19 07:57:56,780 INFO L158 Benchmark]: Witness Printer took 96.26ms. Allocated memory is still 224.4MB. Free memory was 169.9MB in the beginning and 164.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:57:56,782 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 86.0MB. Free memory is still 40.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 530.70ms. Allocated memory is still 130.0MB. Free memory was 95.1MB in the beginning and 97.6MB in the end (delta: -2.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.44ms. Allocated memory is still 130.0MB. Free memory was 96.9MB in the beginning and 94.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 25.97ms. Allocated memory is still 130.0MB. Free memory was 94.7MB in the beginning and 93.4MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 711.31ms. Allocated memory is still 130.0MB. Free memory was 93.4MB in the beginning and 69.0MB in the end (delta: 24.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 11886.84ms. Allocated memory was 130.0MB in the beginning and 224.4MB in the end (delta: 94.4MB). Free memory was 68.3MB in the beginning and 169.9MB in the end (delta: -101.7MB). Peak memory consumption was 96.3MB. Max. memory is 16.1GB. * Witness Printer took 96.26ms. Allocated memory is still 224.4MB. Free memory was 169.9MB in the beginning and 164.7MB 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: 54]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.8s, OverallIterations: 10, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 445 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 424 mSDsluCounter, 1704 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1177 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1239 IncrementalHoareTripleChecker+Invalid, 1337 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 527 mSDtfsCounter, 1239 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 461 GetRequests, 377 SyntacticMatches, 3 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=328occurred in iteration=9, InterpolantAutomatonStates: 74, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 70 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 35 LocationsWithAnnotation, 894 PreInvPairs, 1011 NumberOfFragments, 1295 HoareAnnotationTreeSize, 894 FomulaSimplifications, 570 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 35 FomulaSimplificationsInter, 12138 FormulaSimplificationTreeSizeReductionInter, 3.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 773 NumberOfCodeBlocks, 773 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 822 ConstructedInterpolants, 0 QuantifiedInterpolants, 2147 SizeOfPredicates, 31 NumberOfNonLiveVariables, 1436 ConjunctsInSsa, 93 ConjunctsInUnsatCore, 16 InterpolantComputations, 10 PerfectInterpolantSequences, 314/340 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: 344]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 413]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: -1]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 54]: Loop Invariant Derived loop invariant: (!(1 == systemActive) || \old(pumpRunning) == 0) && (!(\old(methAndRunningLastTime) == 0) || !(1 == systemActive)) - InvariantResult [Line: 207]: Loop Invariant Derived loop invariant: ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || (((methAndRunningLastTime == 0 && !(pumpRunning == 0)) && 2 <= waterLevel) && waterLevel <= \old(waterLevel))) || (((pumpRunning == 0 && waterLevel <= 1) && 1 == systemActive) && waterLevel <= \old(waterLevel))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || ((((pumpRunning == 0 && !(tmp == 0)) && tmp == methaneLevelCritical) && 1 == systemActive) && waterLevel <= \old(waterLevel))) || !(1 == systemActive)) || \old(pumpRunning) == 0)) && (((((((pumpRunning == 0 && !(tmp == 0)) && tmp == methaneLevelCritical) && 1 == systemActive) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((tmp == methaneLevelCritical && !(pumpRunning == 0)) && waterLevel <= \old(waterLevel)))) && (((methaneLevelCritical == 0 || !(1 == systemActive)) || \old(pumpRunning) == 0) || (pumpRunning == 0 && 1 == systemActive)) - InvariantResult [Line: 403]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 485]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 335]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) && (((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || (pumpRunning == 0 && waterLevel <= \old(waterLevel)))) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || (!(pumpRunning == 0) && waterLevel <= \old(waterLevel))) - InvariantResult [Line: 365]: Loop Invariant Derived loop invariant: (((methAndRunningLastTime == 0 && 1 == systemActive) && splverifierCounter == 0) && tmp == 1) || (((!(pumpRunning == 0) && 1 == systemActive) && splverifierCounter == 0) && tmp == 1) - InvariantResult [Line: 345]: Loop Invariant Derived loop invariant: (((methAndRunningLastTime == 0 && 1 == systemActive) && splverifierCounter == 0) && tmp == 1) || ((((!(pumpRunning == 0) && 1 == systemActive) && !(methaneLevelCritical == 0)) && splverifierCounter == 0) && tmp == 1) - InvariantResult [Line: 485]: Loop Invariant Derived loop invariant: ((((pumpRunning == 0 && methAndRunningLastTime == 0) && methaneLevelCritical == 0) && waterLevel <= 1) && 1 == systemActive) && tmp == 1 - InvariantResult [Line: 253]: Loop Invariant Derived loop invariant: (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) && (((((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) && !(pumpRunning == 0)) && aux-isMethaneLevelCritical()-aux == methaneLevelCritical) || !(1 == systemActive)) || \old(pumpRunning) == 0)) && ((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) - InvariantResult [Line: 78]: Loop Invariant Derived loop invariant: (((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || ((((pumpRunning == 0 && waterLevel <= 1) && 1 == systemActive) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel))) || ((((methAndRunningLastTime == 0 && !(pumpRunning == 0)) && 2 <= waterLevel) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel))) && ((((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || (((((pumpRunning == 0 && !(tmp == 0)) && tmp == methaneLevelCritical) && 1 == systemActive) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel))) || !(1 == systemActive)) || \old(pumpRunning) == 0)) && ((((((((pumpRunning == 0 && !(tmp == 0)) && tmp == methaneLevelCritical) && 1 == systemActive) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((((tmp == methaneLevelCritical && !(pumpRunning == 0)) && tmp == methaneLevelCritical) && tmp == 0) && waterLevel <= \old(waterLevel))) - InvariantResult [Line: 70]: Loop Invariant Derived loop invariant: ((((((((((pumpRunning == 0 && tmp == methaneLevelCritical) && methAndRunningLastTime == 0) && 1 == systemActive) && !(methaneLevelCritical == 0)) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel)) || !(1 == systemActive)) || \old(pumpRunning) == 0) || ((((((tmp == methaneLevelCritical && methAndRunningLastTime == 0) && !(pumpRunning == 0)) && 1 == systemActive) && tmp == methaneLevelCritical) && tmp == 0) && waterLevel <= \old(waterLevel))) && (((((!(\old(pumpRunning) == 0) || (tmp == methaneLevelCritical && tmp == 0)) || !(\old(methAndRunningLastTime) == 0)) || ((((!(pumpRunning == 0) && 2 <= waterLevel) && tmp == methaneLevelCritical) && pumpRunning == tmp___0) && waterLevel <= \old(waterLevel))) || !(1 == systemActive)) || (((((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel <= 1) && 1 == systemActive) && tmp == methaneLevelCritical) && waterLevel <= \old(waterLevel)))) && ((((((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) || !(methaneLevelCritical <= 0)) || ((((pumpRunning == 0 && methAndRunningLastTime == 0) && waterLevel <= 1) && 1 == systemActive) && waterLevel <= \old(waterLevel))) || !(0 <= methaneLevelCritical)) || ((((methAndRunningLastTime == 0 && !(pumpRunning == 0)) && 2 <= waterLevel) && 1 == systemActive) && waterLevel <= \old(waterLevel))) - InvariantResult [Line: 185]: Loop Invariant Derived loop invariant: (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methAndRunningLastTime == 0)) && (((!(pumpRunning == 0) || !(1 == systemActive)) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) - InvariantResult [Line: 189]: Loop Invariant Derived loop invariant: (((!(1 == systemActive) || \old(pumpRunning) == 0) || !(methaneLevelCritical == 0)) && (((!(\old(pumpRunning) == 0) || pumpRunning == 0) || !(1 == systemActive)) || !(methAndRunningLastTime == 0))) && ((((!(\old(pumpRunning) == 0) || !(1 == systemActive)) || (waterLevel < 2 && tmp == 0)) || !(methAndRunningLastTime == 0)) || (!(waterLevel < 2) && tmp == 1)) - InvariantResult [Line: 215]: Loop Invariant Derived loop invariant: (((!(\old(methAndRunningLastTime) == 0) || methAndRunningLastTime == 0) || !(1 == systemActive)) && ((!(1 == systemActive) || \old(pumpRunning) == 0) || (((waterLevel + 1 <= \old(waterLevel) || (!(0 < waterLevel) && waterLevel <= \old(waterLevel))) && tmp == methaneLevelCritical) && !(pumpRunning == 0)))) && ((!(\old(pumpRunning) == 0) || !(\old(methAndRunningLastTime) == 0)) || !(1 == systemActive)) RESULT: Ultimate proved your program to be correct! [2022-11-19 07:57:56,834 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e76750f9-9578-4962-89a8-eb3d3b7c8065/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