./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-theta/unwind1-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-theta/unwind1-nondet.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:18:27,612 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:18:27,679 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:18:27,684 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:18:27,684 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:18:27,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:18:27,707 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:18:27,707 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:18:27,708 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:18:27,708 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:18:27,708 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:18:27,708 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:18:27,708 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:18:27,708 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:18:27,709 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:18:27,709 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:18:27,709 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:18:27,709 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:18:27,709 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:18:27,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:18:27,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:18:27,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:18:27,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:18:27,710 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:18:27,710 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:18:27,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:18:27,710 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:18:27,710 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:18:27,710 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:18:27,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:18:27,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:18:27,710 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:18:27,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:18:27,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:18:27,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:18:27,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:18:27,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:18:27,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:18:27,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:18:27,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:18:27,711 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:18:27,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:18:27,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:18:27,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:18:27,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:18:27,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:18:27,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:18:27,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:18:27,712 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB 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 -> Automizer 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 -> 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 [2024-11-27 23:18:27,978 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:18:27,992 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:18:27,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:18:28,000 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:18:28,001 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:18:28,003 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2024-11-27 23:18:30,923 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/data/05bb320d6/3152a3c73e224bb6b87d75d8c3a9d049/FLAGa9c8fc364 [2024-11-27 23:18:31,322 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:18:31,325 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2024-11-27 23:18:31,345 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/data/05bb320d6/3152a3c73e224bb6b87d75d8c3a9d049/FLAGa9c8fc364 [2024-11-27 23:18:31,496 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/data/05bb320d6/3152a3c73e224bb6b87d75d8c3a9d049 [2024-11-27 23:18:31,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:18:31,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:18:31,504 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:18:31,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:18:31,512 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:18:31,514 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,515 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52625719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31, skipping insertion in model container [2024-11-27 23:18:31,515 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:31,561 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:18:31,880 WARN L250 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_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/sv-benchmarks/c/pthread-theta/unwind1-nondet.i[33026,33039] [2024-11-27 23:18:31,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:18:31,915 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:18:31,963 WARN L250 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_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/sv-benchmarks/c/pthread-theta/unwind1-nondet.i[33026,33039] [2024-11-27 23:18:31,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:18:31,993 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:18:31,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31 WrapperNode [2024-11-27 23:18:31,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:18:31,995 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:18:31,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:18:31,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:18:32,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:32,020 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:32,045 INFO L138 Inliner]: procedures = 169, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2024-11-27 23:18:32,045 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:18:32,046 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:18:32,046 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:18:32,046 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:18:32,055 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:32,056 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:32,061 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:32,072 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 23:18:32,072 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:32,072 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:32,076 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:32,076 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:32,083 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:32,084 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:32,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:32,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:18:32,091 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:18:32,091 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:18:32,091 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:18:32,092 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (1/1) ... [2024-11-27 23:18:32,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:18:32,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:32,140 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:18:32,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:18:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:18:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-27 23:18:32,167 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-27 23:18:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-27 23:18:32,167 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-27 23:18:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:18:32,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:18:32,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:18:32,169 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 23:18:32,304 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:18:32,306 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:18:32,531 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 23:18:32,531 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:18:32,694 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:18:32,694 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 23:18:32,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:18:32 BoogieIcfgContainer [2024-11-27 23:18:32,695 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:18:32,699 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:18:32,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:18:32,706 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:18:32,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:18:31" (1/3) ... [2024-11-27 23:18:32,707 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a04d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:18:32, skipping insertion in model container [2024-11-27 23:18:32,708 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:18:31" (2/3) ... [2024-11-27 23:18:32,709 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a04d15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:18:32, skipping insertion in model container [2024-11-27 23:18:32,710 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:18:32" (3/3) ... [2024-11-27 23:18:32,711 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind1-nondet.i [2024-11-27 23:18:32,731 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:18:32,735 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind1-nondet.i that has 3 procedures, 22 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:18:32,735 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 23:18:32,804 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-27 23:18:32,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 62 flow [2024-11-27 23:18:32,895 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-11-27 23:18:32,899 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-27 23:18:32,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 3/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 25 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-11-27 23:18:32,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 62 flow [2024-11-27 23:18:32,907 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 49 flow [2024-11-27 23:18:32,921 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:18:32,937 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, 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;@65542ef0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:18:32,937 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-27 23:18:32,953 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 23:18:32,953 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2024-11-27 23:18:32,954 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-27 23:18:32,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:18:32,954 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:32,955 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-27 23:18:32,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:32,961 INFO L85 PathProgramCache]: Analyzing trace with hash 933352434, now seen corresponding path program 1 times [2024-11-27 23:18:32,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:32,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885488808] [2024-11-27 23:18:32,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:32,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:33,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:18:33,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:33,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885488808] [2024-11-27 23:18:33,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885488808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:33,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:33,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:18:33,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183509426] [2024-11-27 23:18:33,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:33,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:18:33,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:33,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:18:33,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:18:33,535 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 23:18:33,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 49 flow. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2024-11-27 23:18:33,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:18:33,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 23:18:33,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:18:33,736 INFO L124 PetriNetUnfolderBase]: 151/284 cut-off events. [2024-11-27 23:18:33,736 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2024-11-27 23:18:33,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 284 events. 151/284 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1131 event pairs, 68 based on Foata normal form. 11/239 useless extension candidates. Maximal degree in co-relation 520. Up to 145 conditions per place. [2024-11-27 23:18:33,741 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 7 changer transitions 6/41 dead transitions. [2024-11-27 23:18:33,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 176 flow [2024-11-27 23:18:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:18:33,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 23:18:33,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-11-27 23:18:33,756 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-11-27 23:18:33,757 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 49 flow. Second operand 6 states and 70 transitions. [2024-11-27 23:18:33,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 41 transitions, 176 flow [2024-11-27 23:18:33,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 41 transitions, 165 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-27 23:18:33,768 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 83 flow [2024-11-27 23:18:33,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=83, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-11-27 23:18:33,776 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2024-11-27 23:18:33,777 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 83 flow [2024-11-27 23:18:33,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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) [2024-11-27 23:18:33,778 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:18:33,779 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:33,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:18:33,779 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-27 23:18:33,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:33,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1130876244, now seen corresponding path program 1 times [2024-11-27 23:18:33,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:33,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409246479] [2024-11-27 23:18:33,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:33,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:18:33,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:33,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409246479] [2024-11-27 23:18:33,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409246479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:18:33,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:18:33,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:18:33,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692625849] [2024-11-27 23:18:33,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:18:33,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:18:33,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:33,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:18:33,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:18:33,894 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-27 23:18:33,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 83 flow. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-27 23:18:33,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:18:33,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-27 23:18:33,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:18:34,037 INFO L124 PetriNetUnfolderBase]: 106/228 cut-off events. [2024-11-27 23:18:34,037 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2024-11-27 23:18:34,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599 conditions, 228 events. 106/228 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 888 event pairs, 27 based on Foata normal form. 13/226 useless extension candidates. Maximal degree in co-relation 355. Up to 85 conditions per place. [2024-11-27 23:18:34,060 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 16 selfloop transitions, 3 changer transitions 18/40 dead transitions. [2024-11-27 23:18:34,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 212 flow [2024-11-27 23:18:34,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:18:34,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 23:18:34,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-27 23:18:34,064 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-27 23:18:34,064 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 83 flow. Second operand 5 states and 60 transitions. [2024-11-27 23:18:34,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 212 flow [2024-11-27 23:18:34,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 23:18:34,070 INFO L231 Difference]: Finished difference. Result has 35 places, 19 transitions, 76 flow [2024-11-27 23:18:34,070 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=76, PETRI_PLACES=35, PETRI_TRANSITIONS=19} [2024-11-27 23:18:34,071 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 11 predicate places. [2024-11-27 23:18:34,071 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 76 flow [2024-11-27 23:18:34,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-27 23:18:34,071 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:18:34,071 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:34,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:18:34,071 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-27 23:18:34,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:34,072 INFO L85 PathProgramCache]: Analyzing trace with hash 468998787, now seen corresponding path program 1 times [2024-11-27 23:18:34,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:34,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197064742] [2024-11-27 23:18:34,072 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:34,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:34,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:18:34,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:18:34,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197064742] [2024-11-27 23:18:34,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197064742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:18:34,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1073455757] [2024-11-27 23:18:34,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:34,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:34,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:18:34,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:18:34,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:18:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:18:34,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 23:18:34,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:18:34,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:18:34,420 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:18:34,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:18:34,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1073455757] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:18:34,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:18:34,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2024-11-27 23:18:34,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629536749] [2024-11-27 23:18:34,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:18:34,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:18:34,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:18:34,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:18:34,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:18:34,512 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 24 [2024-11-27 23:18:34,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2024-11-27 23:18:34,512 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 23:18:34,512 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 24 [2024-11-27 23:18:34,512 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 23:18:34,729 INFO L124 PetriNetUnfolderBase]: 76/161 cut-off events. [2024-11-27 23:18:34,729 INFO L125 PetriNetUnfolderBase]: For 84/84 co-relation queries the response was YES. [2024-11-27 23:18:34,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 161 events. 76/161 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 492 event pairs, 27 based on Foata normal form. 5/152 useless extension candidates. Maximal degree in co-relation 437. Up to 61 conditions per place. [2024-11-27 23:18:34,731 INFO L140 encePairwiseOnDemand]: 17/24 looper letters, 16 selfloop transitions, 2 changer transitions 22/41 dead transitions. [2024-11-27 23:18:34,731 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 41 transitions, 228 flow [2024-11-27 23:18:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:18:34,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 23:18:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 61 transitions. [2024-11-27 23:18:34,737 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3630952380952381 [2024-11-27 23:18:34,738 INFO L175 Difference]: Start difference. First operand has 35 places, 19 transitions, 76 flow. Second operand 7 states and 61 transitions. [2024-11-27 23:18:34,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 41 transitions, 228 flow [2024-11-27 23:18:34,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 41 transitions, 194 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-11-27 23:18:34,741 INFO L231 Difference]: Finished difference. Result has 34 places, 16 transitions, 60 flow [2024-11-27 23:18:34,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=60, PETRI_PLACES=34, PETRI_TRANSITIONS=16} [2024-11-27 23:18:34,742 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 10 predicate places. [2024-11-27 23:18:34,742 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 16 transitions, 60 flow [2024-11-27 23:18:34,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 7 states have internal predecessors, (34), 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) [2024-11-27 23:18:34,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 23:18:34,742 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:18:34,753 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:18:34,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:18:34,949 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-27 23:18:34,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:18:34,950 INFO L85 PathProgramCache]: Analyzing trace with hash -2054529023, now seen corresponding path program 1 times [2024-11-27 23:18:34,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:18:34,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262415487] [2024-11-27 23:18:34,950 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:18:34,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:18:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:18:34,979 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-27 23:18:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-27 23:18:35,026 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-27 23:18:35,026 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-27 23:18:35,029 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-27 23:18:35,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-27 23:18:35,031 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-27 23:18:35,032 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-27 23:18:35,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:18:35,032 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-27 23:18:35,070 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-27 23:18:35,070 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-27 23:18:35,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.11 11:18:35 BasicIcfg [2024-11-27 23:18:35,074 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-27 23:18:35,075 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-27 23:18:35,075 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-27 23:18:35,075 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-27 23:18:35,076 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:18:32" (3/4) ... [2024-11-27 23:18:35,077 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-27 23:18:35,138 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 9. [2024-11-27 23:18:35,181 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-27 23:18:35,182 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-27 23:18:35,182 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-27 23:18:35,183 INFO L158 Benchmark]: Toolchain (without parser) took 3681.67ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 93.1MB in the beginning and 276.1MB in the end (delta: -182.9MB). Peak memory consumption was 49.1MB. Max. memory is 16.1GB. [2024-11-27 23:18:35,183 INFO L158 Benchmark]: CDTParser took 1.26ms. Allocated memory is still 167.8MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:18:35,183 INFO L158 Benchmark]: CACSL2BoogieTranslator took 490.52ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 73.1MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:18:35,183 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.31ms. Allocated memory is still 117.4MB. Free memory was 73.1MB in the beginning and 71.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:18:35,184 INFO L158 Benchmark]: Boogie Preprocessor took 44.77ms. Allocated memory is still 117.4MB. Free memory was 71.2MB in the beginning and 69.7MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-27 23:18:35,184 INFO L158 Benchmark]: RCFGBuilder took 603.67ms. Allocated memory is still 117.4MB. Free memory was 69.7MB in the beginning and 50.8MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-27 23:18:35,184 INFO L158 Benchmark]: TraceAbstraction took 2375.69ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 50.1MB in the beginning and 281.5MB in the end (delta: -231.4MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. [2024-11-27 23:18:35,185 INFO L158 Benchmark]: Witness Printer took 106.78ms. Allocated memory is still 352.3MB. Free memory was 281.5MB in the beginning and 276.1MB in the end (delta: 5.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-27 23:18:35,186 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.26ms. Allocated memory is still 167.8MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 490.52ms. Allocated memory is still 117.4MB. Free memory was 93.1MB in the beginning and 73.1MB in the end (delta: 20.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.31ms. Allocated memory is still 117.4MB. Free memory was 73.1MB in the beginning and 71.2MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 44.77ms. Allocated memory is still 117.4MB. Free memory was 71.2MB in the beginning and 69.7MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 603.67ms. Allocated memory is still 117.4MB. Free memory was 69.7MB in the beginning and 50.8MB in the end (delta: 18.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2375.69ms. Allocated memory was 117.4MB in the beginning and 352.3MB in the end (delta: 234.9MB). Free memory was 50.1MB in the beginning and 281.5MB in the end (delta: -231.4MB). Peak memory consumption was 7.1MB. Max. memory is 16.1GB. * Witness Printer took 106.78ms. Allocated memory is still 352.3MB. Free memory was 281.5MB in the beginning and 276.1MB in the end (delta: 5.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 753]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L754] 0 int _N; [L755] 0 atomic_int limit; [L772] 0 _N = __VERIFIER_nondet_int() [L773] CALL 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L750] COND FALSE 0 !(!cond) [L773] RET 0 assume_abort_if_not(0 <= _N && _N <= 0x7fffffff - 1) [L774] 0 pthread_t t1, t2; [L775] FCALL, FORK 0 pthread_create(&t1, 0, f1, 0) VAL [\old(arg)={0:0}, _N=0, limit=0, t1=-1] [L757] COND FALSE 1 !(__VERIFIER_nondet_int()) [L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=0, t1=-1, t2=0] [L760] 1 limit = _N + 1 VAL [\old(arg)={0:0}, _N=0, arg={0:0}, limit=1] [L765] 2 int i, bound; [L766] 2 bound = limit [L767] 2 i = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=0, limit=1] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=0, arg={0:0}, arg={0:0}, bound=1, i=1, limit=1] [L767] COND FALSE 2 !(i < bound) [L768] CALL 2 __VERIFIER_assert(i <= _N) [L753] COND TRUE 2 !expression VAL [\old(arg)={0:0}, \old(expression)=0, _N=0, arg={0:0}, expression=0, limit=1] [L753] 2 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, _N=0, arg={0:0}, expression=0, limit=1] - UnprovableResult [Line: 775]: 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. - UnprovableResult [Line: 776]: 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 5 procedures, 37 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 107 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 103 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 244 IncrementalHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 2 mSDtfsCounter, 244 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 22 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=1, InterpolantAutomatonStates: 18, 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, 0.7s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 102 SizeOfPredicates, 6 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 1/4 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, ConComCheckerStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-27 23:18:35,203 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_529bf1cb-1af7-42fd-ad0d-20b2d14f977d/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with 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