./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/25_stack_longer-1-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/25_stack_longer-1-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --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 d8aeba05368f3114a9c95156cfeec5f871d57fefc291ffe35d850d07bff2e31c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:04:18,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:04:18,591 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 05:04:18,597 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:04:18,598 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:04:18,643 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:04:18,644 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:04:18,645 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:04:18,646 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:04:18,646 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:04:18,647 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:04:18,648 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:04:18,648 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:04:18,649 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:04:18,649 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:04:18,650 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:04:18,651 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:04:18,651 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:04:18,652 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:04:18,652 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:04:18,653 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:04:18,653 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:04:18,654 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:04:18,655 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:04:18,655 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:04:18,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:04:18,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:04:18,657 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:04:18,657 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:04:18,677 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:04:18,677 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:04:18,678 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:04:18,678 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:04:18,678 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:04:18,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:04:18,679 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:04:18,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:18,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:04:18,680 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:04:18,680 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:04:18,680 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:04:18,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:04:18,681 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:04:18,681 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:04:18,681 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:04:18,682 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d8aeba05368f3114a9c95156cfeec5f871d57fefc291ffe35d850d07bff2e31c [2023-11-19 05:04:18,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:04:18,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:04:18,936 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:04:18,938 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:04:18,938 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:04:18,940 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-ext/25_stack_longer-1-pthread.i [2023-11-19 05:04:22,128 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:04:22,521 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:04:22,521 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/sv-benchmarks/c/pthread-ext/25_stack_longer-1-pthread.i [2023-11-19 05:04:22,537 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/data/b7d5ea8fb/63d9269ec6bd49ca85681a8914f07f79/FLAGfb43a62fe [2023-11-19 05:04:22,552 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/data/b7d5ea8fb/63d9269ec6bd49ca85681a8914f07f79 [2023-11-19 05:04:22,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:04:22,556 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:04:22,558 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:22,558 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:04:22,563 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:04:22,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:22" (1/1) ... [2023-11-19 05:04:22,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b88446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:22, skipping insertion in model container [2023-11-19 05:04:22,566 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:22" (1/1) ... [2023-11-19 05:04:22,635 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:04:23,048 WARN L240 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_8c0134f6-f47e-46d7-9848-027ba8abad27/sv-benchmarks/c/pthread-ext/25_stack_longer-1-pthread.i[31358,31371] [2023-11-19 05:04:23,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:23,076 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:04:23,117 WARN L240 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_8c0134f6-f47e-46d7-9848-027ba8abad27/sv-benchmarks/c/pthread-ext/25_stack_longer-1-pthread.i[31358,31371] [2023-11-19 05:04:23,122 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:04:23,160 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:04:23,160 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:04:23,169 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:04:23,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:23 WrapperNode [2023-11-19 05:04:23,169 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:04:23,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:23,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:04:23,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:04:23,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:23" (1/1) ... [2023-11-19 05:04:23,218 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:23" (1/1) ... [2023-11-19 05:04:23,259 INFO L138 Inliner]: procedures = 171, calls = 34, calls flagged for inlining = 9, calls inlined = 8, statements flattened = 122 [2023-11-19 05:04:23,266 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:04:23,267 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:04:23,268 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:04:23,268 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:04:23,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:23" (1/1) ... [2023-11-19 05:04:23,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:23" (1/1) ... [2023-11-19 05:04:23,305 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:23" (1/1) ... [2023-11-19 05:04:23,305 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:23" (1/1) ... [2023-11-19 05:04:23,313 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:23" (1/1) ... [2023-11-19 05:04:23,324 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:23" (1/1) ... [2023-11-19 05:04:23,326 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:23" (1/1) ... [2023-11-19 05:04:23,328 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:23" (1/1) ... [2023-11-19 05:04:23,332 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:04:23,333 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:04:23,333 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:04:23,333 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:04:23,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:23" (1/1) ... [2023-11-19 05:04:23,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:04:23,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:04:23,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:04:23,418 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:04:23,437 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 05:04:23,438 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 05:04:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:04:23,438 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 05:04:23,440 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 05:04:23,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:04:23,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:04:23,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:04:23,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:04:23,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 05:04:23,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:04:23,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:04:23,444 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:04:23,632 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:04:23,635 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:04:23,924 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:04:24,028 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:04:24,032 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 05:04:24,036 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:24 BoogieIcfgContainer [2023-11-19 05:04:24,037 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:04:24,042 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:04:24,042 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:04:24,047 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:04:24,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:22" (1/3) ... [2023-11-19 05:04:24,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a07b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:24, skipping insertion in model container [2023-11-19 05:04:24,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:23" (2/3) ... [2023-11-19 05:04:24,051 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a07b43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:24, skipping insertion in model container [2023-11-19 05:04:24,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:24" (3/3) ... [2023-11-19 05:04:24,053 INFO L112 eAbstractionObserver]: Analyzing ICFG 25_stack_longer-1-pthread.i [2023-11-19 05:04:24,064 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 05:04:24,076 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:04:24,077 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:04:24,077 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:04:24,237 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:04:24,318 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:04:24,341 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 111 transitions, 226 flow [2023-11-19 05:04:24,343 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 111 transitions, 226 flow [2023-11-19 05:04:24,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 111 transitions, 226 flow [2023-11-19 05:04:24,408 INFO L124 PetriNetUnfolderBase]: 9/122 cut-off events. [2023-11-19 05:04:24,409 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 05:04:24,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 122 events. 9/122 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 112 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 82. Up to 4 conditions per place. [2023-11-19 05:04:24,419 INFO L119 LiptonReduction]: Number of co-enabled transitions 1932 [2023-11-19 05:04:31,285 INFO L134 LiptonReduction]: Checked pairs total: 1632 [2023-11-19 05:04:31,286 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-11-19 05:04:31,295 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 11 transitions, 26 flow [2023-11-19 05:04:31,316 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 22 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 21 states have internal predecessors, (41), 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) [2023-11-19 05:04:31,344 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:04:31,354 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=LoopHeads, 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;@1652c2e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:04:31,354 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-19 05:04:31,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 19 states have (on average 2.1578947368421053) internal successors, (41), 21 states have internal predecessors, (41), 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) [2023-11-19 05:04:31,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 05:04:31,362 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:04:31,363 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 05:04:31,364 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:04:31,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:04:31,372 INFO L85 PathProgramCache]: Analyzing trace with hash 507909278, now seen corresponding path program 1 times [2023-11-19 05:04:31,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:04:31,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805807660] [2023-11-19 05:04:31,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:04:31,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:04:31,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:04:31,598 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 05:04:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 05:04:31,702 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 05:04:31,704 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 05:04:31,705 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-19 05:04:31,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-11-19 05:04:31,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-19 05:04:31,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:04:31,712 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-19 05:04:31,719 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 05:04:31,720 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 05:04:31,744 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-19 05:04:31,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 05:04:31 BasicIcfg [2023-11-19 05:04:31,755 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 05:04:31,756 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 05:04:31,756 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 05:04:31,756 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 05:04:31,757 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:24" (3/4) ... [2023-11-19 05:04:31,758 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2023-11-19 05:04:31,778 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-19 05:04:31,826 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/witness.graphml [2023-11-19 05:04:31,826 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 05:04:31,828 INFO L158 Benchmark]: Toolchain (without parser) took 9271.38ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 138.6MB in the beginning and 86.0MB in the end (delta: 52.6MB). Peak memory consumption was 86.9MB. Max. memory is 16.1GB. [2023-11-19 05:04:31,828 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 05:04:31,829 INFO L158 Benchmark]: CACSL2BoogieTranslator took 612.38ms. Allocated memory is still 169.9MB. Free memory was 138.0MB in the beginning and 117.7MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-19 05:04:31,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 95.92ms. Allocated memory is still 169.9MB. Free memory was 117.7MB in the beginning and 115.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:04:31,830 INFO L158 Benchmark]: Boogie Preprocessor took 64.78ms. Allocated memory is still 169.9MB. Free memory was 115.6MB in the beginning and 113.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:04:31,831 INFO L158 Benchmark]: RCFGBuilder took 704.31ms. Allocated memory is still 169.9MB. Free memory was 113.5MB in the beginning and 93.2MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-19 05:04:31,831 INFO L158 Benchmark]: TraceAbstraction took 7713.29ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 92.5MB in the beginning and 89.1MB in the end (delta: 3.4MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. [2023-11-19 05:04:31,832 INFO L158 Benchmark]: Witness Printer took 70.78ms. Allocated memory is still 205.5MB. Free memory was 89.1MB in the beginning and 86.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 05:04:31,835 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 117.4MB. Free memory is still 83.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 612.38ms. Allocated memory is still 169.9MB. Free memory was 138.0MB in the beginning and 117.7MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 95.92ms. Allocated memory is still 169.9MB. Free memory was 117.7MB in the beginning and 115.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.78ms. Allocated memory is still 169.9MB. Free memory was 115.6MB in the beginning and 113.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 704.31ms. Allocated memory is still 169.9MB. Free memory was 113.5MB in the beginning and 93.2MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 7713.29ms. Allocated memory was 169.9MB in the beginning and 205.5MB in the end (delta: 35.7MB). Free memory was 92.5MB in the beginning and 89.1MB in the end (delta: 3.4MB). Peak memory consumption was 38.7MB. Max. memory is 16.1GB. * Witness Printer took 70.78ms. Allocated memory is still 205.5MB. Free memory was 89.1MB in the beginning and 86.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9s, 106 PlacesBefore, 12 PlacesAfterwards, 111 TransitionsBefore, 11 TransitionsAfterwards, 1932 CoEnabledTransitionPairs, 7 FixpointIterations, 26 TrivialSequentialCompositions, 67 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 6 ChoiceCompositions, 116 TotalNumberOfCompositions, 1632 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1632, independent: 1632, independent conditional: 0, independent unconditional: 1632, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1271, independent: 1271, independent conditional: 0, independent unconditional: 1271, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1271, independent: 1271, independent conditional: 0, independent unconditional: 1271, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1632, independent: 361, independent conditional: 0, independent unconditional: 361, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1271, unknown conditional: 0, unknown unconditional: 1271] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 5, Positive conditional cache size: 0, Positive unconditional cache size: 5, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, 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 - CounterExampleResult [Line: 736]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L688] 0 int memory[(2*320+1)]; [L689] 0 int next_alloc_idx = 1; [L690] 0 pthread_mutex_t m = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L691] 0 int top; [L746] 0 pthread_mutex_t m2 = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L747] 0 int state = 0; [L765] 0 pthread_t t; VAL [m2={4:0}, m={3:0}, next_alloc_idx=1, state=0, t={5:0}, top=0] [L766] COND TRUE 0 1 [L766] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [m2={4:0}, m={3:0}, next_alloc_idx=1, state=0, t={5:0}, top=0] [L753] 1 case 0: [L754] CALL 1 EBStack_init() [L706] 1 top = 0 [L754] RET 1 EBStack_init() [L755] 1 state = 1 [L756] 1 case 1: [L758] CALL 1 push_loop() [L739] 1 int r = -1; [L740] 1 int arg = __VERIFIER_nondet_int(); [L741] COND TRUE 1 1 [L742] CALL, EXPR 1 push(arg) [L715] 1 int oldTop = -1, newTop = -1; [L716] CALL, EXPR 1 index_malloc() [L693] 1 int curr_alloc_idx = -1; [L695] COND FALSE 1 !(next_alloc_idx+2-1 > (2*320+1)) [L699] 1 curr_alloc_idx = next_alloc_idx [L700] 1 next_alloc_idx += 2 [L703] 1 return curr_alloc_idx; [L716] RET, EXPR 1 index_malloc() [L716] 1 newTop = index_malloc() [L717] COND FALSE 1 !(newTop == 0) [L720] 1 memory[newTop+0] = d [L722] 1 oldTop = top [L723] 1 memory[newTop+1] = oldTop [L725] 1 top = newTop [L728] 1 return 1; [L742] RET, EXPR 1 push(arg) [L742] 1 r = push(arg) [L743] CALL 1 __VERIFIER_atomic_assert(r) [L736] EXPR 1 !r || !isEmpty() [L736] CALL, EXPR 1 isEmpty() [L709] COND FALSE 1 !(top == 0) [L712] 1 return 0; [L736] RET, EXPR 1 isEmpty() [L736] EXPR 1 !r || !isEmpty() [L736] COND TRUE 1 !(!(!r || !isEmpty())) [L736] 1 reach_error() VAL [\old(r)=1, m2={4:0}, m={3:0}, next_alloc_idx=3, r=1, state=1, top=1] - UnprovableResult [Line: 766]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 167 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 7.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 RESULT: Ultimate proved your program to be incorrect! [2023-11-19 05:04:31,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8c0134f6-f47e-46d7-9848-027ba8abad27/bin/utaipan-verify-t7M7D8N6sZ/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE