./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.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_9c560bf1-edda-43bf-8bce-96e1ac813bc5/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/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_9c560bf1-edda-43bf-8bce-96e1ac813bc5/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/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_9c560bf1-edda-43bf-8bce-96e1ac813bc5/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 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 --- 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 07:58:19,252 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:58:19,254 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:58:19,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:58:19,282 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:58:19,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:58:19,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:58:19,287 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:58:19,288 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:58:19,289 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:58:19,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:58:19,292 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:58:19,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:58:19,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:58:19,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:58:19,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:58:19,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:58:19,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:58:19,299 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:58:19,306 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:58:19,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:58:19,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:58:19,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:58:19,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:58:19,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:58:19,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:58:19,329 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:58:19,330 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:58:19,330 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:58:19,331 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:58:19,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:58:19,332 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:58:19,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:58:19,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:58:19,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:58:19,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:58:19,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:58:19,336 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:58:19,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:58:19,337 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:58:19,338 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:58:19,339 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:58:19,361 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:58:19,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:58:19,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:58:19,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:58:19,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:58:19,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:58:19,362 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:58:19,363 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:58:19,363 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:58:19,363 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:58:19,363 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:58:19,363 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:58:19,364 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:58:19,364 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:58:19,364 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:58:19,364 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:58:19,365 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:58:19,365 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:58:19,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:58:19,366 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:58:19,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:58:19,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:58:19,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:58:19,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:58:19,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:58:19,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:58:19,367 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:58:19,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:58:19,368 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:58:19,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:58:19,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:58:19,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:58:19,368 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:58:19,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:58:19,371 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:58:19,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:58:19,372 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:58:19,373 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:58:19,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:58:19,373 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:58:19,373 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:58:19,374 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_9c560bf1-edda-43bf-8bce-96e1ac813bc5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c45fd7cfbad1c12ff3ef6a6150c824b5f7de404c290f417bc2834c0c8e69422 [2022-11-19 07:58:19,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:58:19,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:58:19,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:58:19,720 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:58:19,721 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:58:19,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2022-11-19 07:58:19,793 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/bin/utaipan-I9t0OCRTmS/data/81ec1c02f/d35edcaac28c46c48d263afb552c8738/FLAG8c1d081bb [2022-11-19 07:58:20,342 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:58:20,343 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c [2022-11-19 07:58:20,349 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/bin/utaipan-I9t0OCRTmS/data/81ec1c02f/d35edcaac28c46c48d263afb552c8738/FLAG8c1d081bb [2022-11-19 07:58:20,725 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/bin/utaipan-I9t0OCRTmS/data/81ec1c02f/d35edcaac28c46c48d263afb552c8738 [2022-11-19 07:58:20,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:58:20,729 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:58:20,730 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:58:20,731 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:58:20,734 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:58:20,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:20" (1/1) ... [2022-11-19 07:58:20,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12554996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:20, skipping insertion in model container [2022-11-19 07:58:20,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:20" (1/1) ... [2022-11-19 07:58:20,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:58:20,759 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:58:20,989 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_9c560bf1-edda-43bf-8bce-96e1ac813bc5/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c[2652,2665] [2022-11-19 07:58:20,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:58:21,002 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:58:21,022 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_9c560bf1-edda-43bf-8bce-96e1ac813bc5/sv-benchmarks/c/weaver/parallel-ticket-2.wvr.c[2652,2665] [2022-11-19 07:58:21,023 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:58:21,036 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:58:21,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:21 WrapperNode [2022-11-19 07:58:21,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:58:21,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:58:21,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:58:21,038 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:58:21,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:21" (1/1) ... [2022-11-19 07:58:21,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:21" (1/1) ... [2022-11-19 07:58:21,071 INFO L138 Inliner]: procedures = 21, calls = 40, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 118 [2022-11-19 07:58:21,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:58:21,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:58:21,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:58:21,073 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:58:21,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:21" (1/1) ... [2022-11-19 07:58:21,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:21" (1/1) ... [2022-11-19 07:58:21,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:21" (1/1) ... [2022-11-19 07:58:21,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:21" (1/1) ... [2022-11-19 07:58:21,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:21" (1/1) ... [2022-11-19 07:58:21,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:21" (1/1) ... [2022-11-19 07:58:21,092 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:21" (1/1) ... [2022-11-19 07:58:21,093 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:21" (1/1) ... [2022-11-19 07:58:21,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:58:21,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:58:21,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:58:21,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:58:21,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:21" (1/1) ... [2022-11-19 07:58:21,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:58:21,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:58:21,129 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:58:21,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:58:21,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:58:21,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-19 07:58:21,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-19 07:58:21,174 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-19 07:58:21,174 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-19 07:58:21,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:58:21,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:58:21,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:58:21,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-19 07:58:21,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-19 07:58:21,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:58:21,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:58:21,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:58:21,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:58:21,178 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 07:58:21,274 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:58:21,276 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:58:21,535 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:58:21,631 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:58:21,631 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:58:21,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:21 BoogieIcfgContainer [2022-11-19 07:58:21,634 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:58:21,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:58:21,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:58:21,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:58:21,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:20" (1/3) ... [2022-11-19 07:58:21,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31477577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:21, skipping insertion in model container [2022-11-19 07:58:21,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:21" (2/3) ... [2022-11-19 07:58:21,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31477577 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:21, skipping insertion in model container [2022-11-19 07:58:21,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:21" (3/3) ... [2022-11-19 07:58:21,653 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-2.wvr.c [2022-11-19 07:58:21,661 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 07:58:21,671 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:58:21,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:58:21,673 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:58:21,778 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-19 07:58:21,819 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:58:21,831 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 96 transitions, 208 flow [2022-11-19 07:58:21,834 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 96 transitions, 208 flow [2022-11-19 07:58:21,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 96 transitions, 208 flow [2022-11-19 07:58:21,905 INFO L130 PetriNetUnfolder]: 2/94 cut-off events. [2022-11-19 07:58:21,905 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-19 07:58:21,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 2/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2022-11-19 07:58:21,911 INFO L119 LiptonReduction]: Number of co-enabled transitions 282 [2022-11-19 07:58:25,830 INFO L134 LiptonReduction]: Checked pairs total: 704 [2022-11-19 07:58:25,830 INFO L136 LiptonReduction]: Total number of compositions: 86 [2022-11-19 07:58:25,841 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 24 places, 17 transitions, 50 flow [2022-11-19 07:58:25,862 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 42 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 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 07:58:25,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:58:25,896 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;@381de55b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:58:25,897 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-19 07:58:25,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 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 07:58:25,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:58:25,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:25,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:58:25,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-19 07:58:25,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:25,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1262463839, now seen corresponding path program 1 times [2022-11-19 07:58:25,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:25,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679304905] [2022-11-19 07:58:25,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:25,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:26,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:26,754 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 07:58:26,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:26,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679304905] [2022-11-19 07:58:26,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679304905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:26,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:26,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:58:26,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188012771] [2022-11-19 07:58:26,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:26,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:58:26,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:26,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:58:26,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:58:26,795 INFO L87 Difference]: Start difference. First operand has 42 states, 41 states have (on average 1.8048780487804879) internal successors, (74), 41 states have internal predecessors, (74), 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) Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 07:58:26,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:26,999 INFO L93 Difference]: Finished difference Result 53 states and 89 transitions. [2022-11-19 07:58:27,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:58:27,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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) Word has length 14 [2022-11-19 07:58:27,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:27,010 INFO L225 Difference]: With dead ends: 53 [2022-11-19 07:58:27,010 INFO L226 Difference]: Without dead ends: 30 [2022-11-19 07:58:27,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:58:27,014 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:27,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:58:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-19 07:58:27,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2022-11-19 07:58:27,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.5555555555555556) internal successors, (42), 27 states have internal predecessors, (42), 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 07:58:27,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 42 transitions. [2022-11-19 07:58:27,041 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 42 transitions. Word has length 14 [2022-11-19 07:58:27,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:27,042 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 42 transitions. [2022-11-19 07:58:27,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 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 07:58:27,042 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 42 transitions. [2022-11-19 07:58:27,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:58:27,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:27,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:58:27,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:58:27,044 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-19 07:58:27,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:27,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1546564125, now seen corresponding path program 2 times [2022-11-19 07:58:27,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:27,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325613460] [2022-11-19 07:58:27,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:27,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:27,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:27,366 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 07:58:27,369 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:27,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325613460] [2022-11-19 07:58:27,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325613460] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:27,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:27,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:58:27,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717430475] [2022-11-19 07:58:27,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:27,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:58:27,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:27,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:58:27,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:58:27,378 INFO L87 Difference]: Start difference. First operand 28 states and 42 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 07:58:27,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:27,476 INFO L93 Difference]: Finished difference Result 32 states and 46 transitions. [2022-11-19 07:58:27,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:58:27,477 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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) Word has length 14 [2022-11-19 07:58:27,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:27,479 INFO L225 Difference]: With dead ends: 32 [2022-11-19 07:58:27,479 INFO L226 Difference]: Without dead ends: 20 [2022-11-19 07:58:27,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:58:27,483 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:27,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:58:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-11-19 07:58:27,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-11-19 07:58:27,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 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 07:58:27,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-11-19 07:58:27,493 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2022-11-19 07:58:27,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:27,493 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-11-19 07:58:27,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 07:58:27,493 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-11-19 07:58:27,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-19 07:58:27,495 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:58:27,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:58:27,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:58:27,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-19 07:58:27,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:58:27,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1508419271, now seen corresponding path program 3 times [2022-11-19 07:58:27,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:58:27,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356623979] [2022-11-19 07:58:27,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:58:27,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:58:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:58:27,713 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 07:58:27,713 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:58:27,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356623979] [2022-11-19 07:58:27,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356623979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:58:27,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:58:27,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:58:27,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233766782] [2022-11-19 07:58:27,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:58:27,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:58:27,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:58:27,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:58:27,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:58:27,716 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 07:58:27,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:58:27,751 INFO L93 Difference]: Finished difference Result 10 states and 11 transitions. [2022-11-19 07:58:27,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:58:27,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) Word has length 14 [2022-11-19 07:58:27,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:58:27,752 INFO L225 Difference]: With dead ends: 10 [2022-11-19 07:58:27,752 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 07:58:27,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:58:27,753 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:58:27,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 07:58:27,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 07:58:27,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 07:58:27,755 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 07:58:27,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 07:58:27,755 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-11-19 07:58:27,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:58:27,755 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 07:58:27,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 07:58:27,756 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 07:58:27,756 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 07:58:27,758 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-19 07:58:27,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-19 07:58:27,759 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-19 07:58:27,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:58:27,762 INFO L444 BasicCegarLoop]: Path program histogram: [3] [2022-11-19 07:58:27,765 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-19 07:58:27,765 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 07:58:27,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:58:27 BasicIcfg [2022-11-19 07:58:27,767 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 07:58:27,768 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 07:58:27,768 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 07:58:27,768 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 07:58:27,769 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:21" (3/4) ... [2022-11-19 07:58:27,772 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 07:58:27,777 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-19 07:58:27,777 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-19 07:58:27,781 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-19 07:58:27,782 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-19 07:58:27,782 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 07:58:27,782 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 07:58:27,824 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 07:58:27,824 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 07:58:27,825 INFO L158 Benchmark]: Toolchain (without parser) took 7096.10ms. Allocated memory was 111.1MB in the beginning and 186.6MB in the end (delta: 75.5MB). Free memory was 82.7MB in the beginning and 89.3MB in the end (delta: -6.5MB). Peak memory consumption was 72.1MB. Max. memory is 16.1GB. [2022-11-19 07:58:27,825 INFO L158 Benchmark]: CDTParser took 0.68ms. Allocated memory is still 111.1MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:58:27,826 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.75ms. Allocated memory is still 111.1MB. Free memory was 82.4MB in the beginning and 85.5MB in the end (delta: -3.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 07:58:27,826 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.96ms. Allocated memory is still 111.1MB. Free memory was 85.5MB in the beginning and 83.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 07:58:27,826 INFO L158 Benchmark]: Boogie Preprocessor took 22.83ms. Allocated memory is still 111.1MB. Free memory was 83.7MB in the beginning and 82.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 07:58:27,826 INFO L158 Benchmark]: RCFGBuilder took 538.04ms. Allocated memory is still 111.1MB. Free memory was 82.3MB in the beginning and 66.1MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-19 07:58:27,827 INFO L158 Benchmark]: TraceAbstraction took 6131.86ms. Allocated memory was 111.1MB in the beginning and 186.6MB in the end (delta: 75.5MB). Free memory was 65.5MB in the beginning and 92.4MB in the end (delta: -26.9MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. [2022-11-19 07:58:27,827 INFO L158 Benchmark]: Witness Printer took 56.42ms. Allocated memory is still 186.6MB. Free memory was 92.4MB in the beginning and 89.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 07:58:27,830 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.68ms. Allocated memory is still 111.1MB. Free memory is still 64.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.75ms. Allocated memory is still 111.1MB. Free memory was 82.4MB in the beginning and 85.5MB in the end (delta: -3.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.96ms. Allocated memory is still 111.1MB. Free memory was 85.5MB in the beginning and 83.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.83ms. Allocated memory is still 111.1MB. Free memory was 83.7MB in the beginning and 82.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 538.04ms. Allocated memory is still 111.1MB. Free memory was 82.3MB in the beginning and 66.1MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6131.86ms. Allocated memory was 111.1MB in the beginning and 186.6MB in the end (delta: 75.5MB). Free memory was 65.5MB in the beginning and 92.4MB in the end (delta: -26.9MB). Peak memory consumption was 50.7MB. Max. memory is 16.1GB. * Witness Printer took 56.42ms. Allocated memory is still 186.6MB. Free memory was 92.4MB in the beginning and 89.3MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.0s, 101 PlacesBefore, 24 PlacesAfterwards, 96 TransitionsBefore, 17 TransitionsAfterwards, 282 CoEnabledTransitionPairs, 7 FixpointIterations, 65 TrivialSequentialCompositions, 15 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 86 TotalNumberOfCompositions, 704 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 465, independent: 405, independent conditional: 0, independent unconditional: 405, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 214, independent: 198, independent conditional: 0, independent unconditional: 198, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 214, independent: 193, independent conditional: 0, independent unconditional: 193, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 21, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 94, independent: 17, independent conditional: 0, independent unconditional: 17, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 465, independent: 207, independent conditional: 0, independent unconditional: 207, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 214, unknown conditional: 0, unknown unconditional: 214] , Statistics on independence cache: Total cache size (in pairs): 29, Positive cache size: 23, Positive conditional cache size: 0, Positive unconditional cache size: 23, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 102]: 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 with 1 thread instances CFG has 5 procedures, 112 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 50 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 50 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 201 IncrementalHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 0 mSDtfsCounter, 201 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 220 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! [2022-11-19 07:58:27,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c560bf1-edda-43bf-8bce-96e1ac813bc5/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE