./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-theta/unwind1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-theta/unwind1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC --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 369675afdce9f24a16d648c2af0379dafe84b15f75fb11d38697f731d0b5b69e --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:57:25,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:57:25,275 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:57:25,280 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:57:25,281 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:57:25,303 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:57:25,303 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:57:25,303 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:57:25,304 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:57:25,304 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:57:25,304 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:57:25,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:57:25,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:57:25,305 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:57:25,305 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:57:25,305 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:57:25,305 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:57:25,306 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:57:25,306 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:57:25,306 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:57:25,306 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:57:25,306 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:57:25,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:57:25,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:57:25,307 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:57:25,307 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:57:25,307 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:57:25,307 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:57:25,307 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:57:25,307 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:57:25,307 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:57:25,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:57:25,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:57:25,308 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:57:25,308 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:57:25,308 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:57:25,308 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:57:25,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:57:25,309 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:57:25,309 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:57:25,309 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:57:25,309 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:57:25,309 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:57:25,309 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:57:25,309 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:57:25,310 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:57:25,310 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:57:25,310 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:57:25,310 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_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC 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 -> 369675afdce9f24a16d648c2af0379dafe84b15f75fb11d38697f731d0b5b69e [2024-11-24 00:57:25,641 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:57:25,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:57:25,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:57:25,659 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:57:25,659 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:57:25,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/pthread-theta/unwind1-1.i [2024-11-24 00:57:28,637 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/data/3887872b8/828be51b83644b6f9a7595762fb5d5cb/FLAG8d6bef411 [2024-11-24 00:57:29,042 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:57:29,042 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/sv-benchmarks/c/pthread-theta/unwind1-1.i [2024-11-24 00:57:29,056 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/data/3887872b8/828be51b83644b6f9a7595762fb5d5cb/FLAG8d6bef411 [2024-11-24 00:57:29,069 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/data/3887872b8/828be51b83644b6f9a7595762fb5d5cb [2024-11-24 00:57:29,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:57:29,073 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:57:29,075 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:57:29,075 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:57:29,080 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:57:29,081 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,081 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11cb4749 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29, skipping insertion in model container [2024-11-24 00:57:29,082 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,126 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:57:29,482 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_29b65094-2628-4b56-b916-849a37c2ad56/sv-benchmarks/c/pthread-theta/unwind1-1.i[33026,33039] [2024-11-24 00:57:29,508 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:57:29,518 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:57:29,576 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_29b65094-2628-4b56-b916-849a37c2ad56/sv-benchmarks/c/pthread-theta/unwind1-1.i[33026,33039] [2024-11-24 00:57:29,586 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:57:29,624 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:57:29,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29 WrapperNode [2024-11-24 00:57:29,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:57:29,626 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:57:29,626 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:57:29,626 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:57:29,634 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,647 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,670 INFO L138 Inliner]: procedures = 169, calls = 10, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2024-11-24 00:57:29,671 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:57:29,671 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:57:29,671 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:57:29,671 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:57:29,681 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,681 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,686 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,708 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]. [2024-11-24 00:57:29,708 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,708 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,717 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,721 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,724 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,726 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,732 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:57:29,733 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:57:29,734 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:57:29,734 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:57:29,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29" (1/1) ... [2024-11-24 00:57:29,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:57:29,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:29,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:57:29,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:57:29,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:57:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2024-11-24 00:57:29,817 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2024-11-24 00:57:29,817 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2024-11-24 00:57:29,818 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2024-11-24 00:57:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:57:29,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:57:29,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:57:29,819 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 00:57:29,991 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:57:29,994 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:57:30,167 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 00:57:30,167 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:57:30,262 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:57:30,262 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 00:57:30,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:57:30 BoogieIcfgContainer [2024-11-24 00:57:30,263 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:57:30,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:57:30,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:57:30,273 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:57:30,274 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:57:29" (1/3) ... [2024-11-24 00:57:30,274 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264700df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:57:30, skipping insertion in model container [2024-11-24 00:57:30,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:57:29" (2/3) ... [2024-11-24 00:57:30,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264700df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:57:30, skipping insertion in model container [2024-11-24 00:57:30,275 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:57:30" (3/3) ... [2024-11-24 00:57:30,276 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind1-1.i [2024-11-24 00:57:30,293 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:57:30,295 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind1-1.i that has 3 procedures, 22 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:57:30,295 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 00:57:30,363 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-24 00:57:30,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 24 transitions, 62 flow [2024-11-24 00:57:30,438 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-11-24 00:57:30,440 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-24 00:57:30,444 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 4. Compared 28 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. [2024-11-24 00:57:30,444 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 24 transitions, 62 flow [2024-11-24 00:57:30,447 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 49 flow [2024-11-24 00:57:30,465 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:57:30,481 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;@43957463, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:57:30,481 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-24 00:57:30,498 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 00:57:30,498 INFO L124 PetriNetUnfolderBase]: 3/17 cut-off events. [2024-11-24 00:57:30,498 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-24 00:57:30,498 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:30,503 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:30,504 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 00:57:30,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:30,512 INFO L85 PathProgramCache]: Analyzing trace with hash -367970190, now seen corresponding path program 1 times [2024-11-24 00:57:30,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:30,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115894777] [2024-11-24 00:57:30,521 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:30,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:30,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:30,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115894777] [2024-11-24 00:57:30,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115894777] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:30,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:57:30,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:57:30,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072175731] [2024-11-24 00:57:30,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:30,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:57:30,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:30,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:57:30,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:57:31,023 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-24 00:57:31,025 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) [2024-11-24 00:57:31,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:31,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-24 00:57:31,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:31,292 INFO L124 PetriNetUnfolderBase]: 151/284 cut-off events. [2024-11-24 00:57:31,292 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-24 00:57:31,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 284 events. 151/284 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1116 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. [2024-11-24 00:57:31,301 INFO L140 encePairwiseOnDemand]: 16/24 looper letters, 25 selfloop transitions, 7 changer transitions 6/41 dead transitions. [2024-11-24 00:57:31,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 41 transitions, 176 flow [2024-11-24 00:57:31,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:57:31,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:57:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-11-24 00:57:31,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-11-24 00:57:31,323 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 49 flow. Second operand 6 states and 70 transitions. [2024-11-24 00:57:31,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 41 transitions, 176 flow [2024-11-24 00:57:31,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 41 transitions, 165 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-24 00:57:31,332 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 83 flow [2024-11-24 00:57:31,334 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} [2024-11-24 00:57:31,337 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 5 predicate places. [2024-11-24 00:57:31,337 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 83 flow [2024-11-24 00:57:31,337 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) [2024-11-24 00:57:31,338 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:31,338 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:31,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:57:31,338 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 00:57:31,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:31,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1477795366, now seen corresponding path program 1 times [2024-11-24 00:57:31,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:31,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678047227] [2024-11-24 00:57:31,339 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:31,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:31,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:31,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678047227] [2024-11-24 00:57:31,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678047227] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:31,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:57:31,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:57:31,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633897546] [2024-11-24 00:57:31,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:31,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:57:31,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:31,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:57:31,522 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:57:31,532 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-24 00:57:31,532 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) [2024-11-24 00:57:31,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:31,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-24 00:57:31,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:31,742 INFO L124 PetriNetUnfolderBase]: 106/228 cut-off events. [2024-11-24 00:57:31,742 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2024-11-24 00:57:31,744 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 877 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. [2024-11-24 00:57:31,745 INFO L140 encePairwiseOnDemand]: 19/24 looper letters, 16 selfloop transitions, 3 changer transitions 18/40 dead transitions. [2024-11-24 00:57:31,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 40 transitions, 212 flow [2024-11-24 00:57:31,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:57:31,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 00:57:31,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2024-11-24 00:57:31,753 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-24 00:57:31,754 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 83 flow. Second operand 5 states and 60 transitions. [2024-11-24 00:57:31,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 40 transitions, 212 flow [2024-11-24 00:57:31,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 40 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 00:57:31,761 INFO L231 Difference]: Finished difference. Result has 35 places, 19 transitions, 76 flow [2024-11-24 00:57:31,762 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} [2024-11-24 00:57:31,762 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 11 predicate places. [2024-11-24 00:57:31,763 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 19 transitions, 76 flow [2024-11-24 00:57:31,763 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) [2024-11-24 00:57:31,763 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:31,763 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:31,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:57:31,763 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 00:57:31,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:31,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1171723523, now seen corresponding path program 1 times [2024-11-24 00:57:31,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:31,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404132444] [2024-11-24 00:57:31,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:31,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:31,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:31,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:31,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404132444] [2024-11-24 00:57:31,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404132444] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:57:31,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548093929] [2024-11-24 00:57:31,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:31,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:31,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:31,986 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:57:31,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:57:32,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:57:32,076 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:57:32,081 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:57:32,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:32,267 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:57:32,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:32,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548093929] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:57:32,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:57:32,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-24 00:57:32,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321757572] [2024-11-24 00:57:32,341 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:57:32,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 00:57:32,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:32,342 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 00:57:32,343 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:57:32,394 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-24 00:57:32,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 19 transitions, 76 flow. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 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) [2024-11-24 00:57:32,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:32,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-24 00:57:32,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:32,581 INFO L124 PetriNetUnfolderBase]: 59/128 cut-off events. [2024-11-24 00:57:32,581 INFO L125 PetriNetUnfolderBase]: For 41/42 co-relation queries the response was YES. [2024-11-24 00:57:32,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 357 conditions, 128 events. 59/128 cut-off events. For 41/42 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 361 event pairs, 27 based on Foata normal form. 5/118 useless extension candidates. Maximal degree in co-relation 318. Up to 69 conditions per place. [2024-11-24 00:57:32,586 INFO L140 encePairwiseOnDemand]: 18/24 looper letters, 18 selfloop transitions, 4 changer transitions 9/34 dead transitions. [2024-11-24 00:57:32,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 34 transitions, 179 flow [2024-11-24 00:57:32,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-24 00:57:32,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-24 00:57:32,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 67 transitions. [2024-11-24 00:57:32,588 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39880952380952384 [2024-11-24 00:57:32,588 INFO L175 Difference]: Start difference. First operand has 35 places, 19 transitions, 76 flow. Second operand 7 states and 67 transitions. [2024-11-24 00:57:32,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 34 transitions, 179 flow [2024-11-24 00:57:32,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 34 transitions, 155 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-11-24 00:57:32,591 INFO L231 Difference]: Finished difference. Result has 32 places, 19 transitions, 71 flow [2024-11-24 00:57:32,591 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=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=71, PETRI_PLACES=32, PETRI_TRANSITIONS=19} [2024-11-24 00:57:32,595 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 8 predicate places. [2024-11-24 00:57:32,595 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 19 transitions, 71 flow [2024-11-24 00:57:32,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 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) [2024-11-24 00:57:32,595 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:32,595 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:32,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:57:32,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-24 00:57:32,799 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 00:57:32,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:32,799 INFO L85 PathProgramCache]: Analyzing trace with hash 289914957, now seen corresponding path program 2 times [2024-11-24 00:57:32,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:32,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938528591] [2024-11-24 00:57:32,800 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:57:32,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:32,823 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:57:32,823 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:57:32,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:32,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:57:32,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938528591] [2024-11-24 00:57:32,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938528591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:57:32,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567978018] [2024-11-24 00:57:32,966 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:57:32,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:32,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:57:32,970 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:57:32,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:57:33,037 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:57:33,038 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:57:33,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:57:33,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:57:33,094 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:57:33,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:57:33,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567978018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:57:33,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:57:33,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-24 00:57:33,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188616601] [2024-11-24 00:57:33,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:57:33,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:57:33,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:57:33,096 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:57:33,096 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-24 00:57:33,102 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 24 [2024-11-24 00:57:33,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 19 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 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) [2024-11-24 00:57:33,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 00:57:33,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 24 [2024-11-24 00:57:33,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 00:57:33,231 INFO L124 PetriNetUnfolderBase]: 56/131 cut-off events. [2024-11-24 00:57:33,231 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-24 00:57:33,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 365 conditions, 131 events. 56/131 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 376 event pairs, 27 based on Foata normal form. 5/127 useless extension candidates. Maximal degree in co-relation 343. Up to 60 conditions per place. [2024-11-24 00:57:33,233 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 16 selfloop transitions, 2 changer transitions 12/32 dead transitions. [2024-11-24 00:57:33,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 171 flow [2024-11-24 00:57:33,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:57:33,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 00:57:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 59 transitions. [2024-11-24 00:57:33,234 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-11-24 00:57:33,234 INFO L175 Difference]: Start difference. First operand has 32 places, 19 transitions, 71 flow. Second operand 6 states and 59 transitions. [2024-11-24 00:57:33,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 171 flow [2024-11-24 00:57:33,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 156 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-24 00:57:33,237 INFO L231 Difference]: Finished difference. Result has 32 places, 17 transitions, 66 flow [2024-11-24 00:57:33,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=59, 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=6, PETRI_FLOW=66, PETRI_PLACES=32, PETRI_TRANSITIONS=17} [2024-11-24 00:57:33,237 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 8 predicate places. [2024-11-24 00:57:33,238 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 17 transitions, 66 flow [2024-11-24 00:57:33,238 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 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) [2024-11-24 00:57:33,238 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 00:57:33,238 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:57:33,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:57:33,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:57:33,439 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-24 00:57:33,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:57:33,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1043709431, now seen corresponding path program 1 times [2024-11-24 00:57:33,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:57:33,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315408270] [2024-11-24 00:57:33,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:57:33,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:57:33,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:57:33,451 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 00:57:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 00:57:33,481 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 00:57:33,482 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 00:57:33,483 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-11-24 00:57:33,484 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-11-24 00:57:33,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-11-24 00:57:33,485 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-24 00:57:33,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:57:33,485 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2024-11-24 00:57:33,514 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-24 00:57:33,514 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 00:57:33,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 12:57:33 BasicIcfg [2024-11-24 00:57:33,523 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 00:57:33,524 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 00:57:33,524 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 00:57:33,524 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 00:57:33,525 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:57:30" (3/4) ... [2024-11-24 00:57:33,530 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-24 00:57:33,596 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 10. [2024-11-24 00:57:33,664 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/witness.graphml [2024-11-24 00:57:33,665 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/witness.yml [2024-11-24 00:57:33,665 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 00:57:33,667 INFO L158 Benchmark]: Toolchain (without parser) took 4592.86ms. Allocated memory is still 117.4MB. Free memory was 88.8MB in the beginning and 73.6MB in the end (delta: 15.1MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2024-11-24 00:57:33,668 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory is still 39.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:57:33,669 INFO L158 Benchmark]: CACSL2BoogieTranslator took 551.02ms. Allocated memory is still 117.4MB. Free memory was 88.4MB in the beginning and 68.8MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 00:57:33,669 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.66ms. Allocated memory is still 117.4MB. Free memory was 68.8MB in the beginning and 67.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:57:33,670 INFO L158 Benchmark]: Boogie Preprocessor took 61.49ms. Allocated memory is still 117.4MB. Free memory was 67.0MB in the beginning and 65.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:57:33,670 INFO L158 Benchmark]: RCFGBuilder took 530.01ms. Allocated memory is still 117.4MB. Free memory was 65.5MB in the beginning and 47.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-24 00:57:33,671 INFO L158 Benchmark]: TraceAbstraction took 3256.24ms. Allocated memory is still 117.4MB. Free memory was 47.1MB in the beginning and 79.3MB in the end (delta: -32.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:57:33,671 INFO L158 Benchmark]: Witness Printer took 141.19ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 73.6MB in the end (delta: 5.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 00:57:33,674 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 83.9MB. Free memory is still 39.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 551.02ms. Allocated memory is still 117.4MB. Free memory was 88.4MB in the beginning and 68.8MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.66ms. Allocated memory is still 117.4MB. Free memory was 68.8MB in the beginning and 67.0MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 61.49ms. Allocated memory is still 117.4MB. Free memory was 67.0MB in the beginning and 65.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 530.01ms. Allocated memory is still 117.4MB. Free memory was 65.5MB in the beginning and 47.8MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 3256.24ms. Allocated memory is still 117.4MB. Free memory was 47.1MB in the beginning and 79.3MB in the end (delta: -32.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 141.19ms. Allocated memory is still 117.4MB. Free memory was 79.3MB in the beginning and 73.6MB in the end (delta: 5.7MB). 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 = 1 [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=1, limit=0, t1=0] [L757] COND FALSE 1 !(__VERIFIER_nondet_int()) [L776] FCALL, FORK 0 pthread_create(&t2, 0, f2, 0) VAL [\old(arg)={0:0}, _N=1, arg={0:0}, limit=0, t1=0, t2=1] [L760] 1 limit = _N + 1 VAL [\old(arg)={0:0}, _N=1, arg={0:0}, limit=2] [L765] 2 int i, bound; [L766] 2 bound = limit [L767] 2 i = 0 VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=0, limit=2] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=1, limit=2] [L767] COND TRUE 2 i < bound [L767] 2 i++ VAL [\old(arg)={0:0}, \old(arg)={0:0}, _N=1, arg={0:0}, arg={0:0}, bound=2, i=2, limit=2] [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=1, arg={0:0}, expression=0, limit=2] [L753] 2 reach_error() VAL [\old(arg)={0:0}, \old(expression)=0, _N=1, arg={0:0}, expression=0, limit=2] - 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. - 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. - 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: 3.1s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 151 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 141 mSDsluCounter, 19 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 346 IncrementalHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 2 mSDtfsCounter, 346 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=83occurred in iteration=1, InterpolantAutomatonStates: 24, 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, 1.1s InterpolantComputationTime, 80 NumberOfCodeBlocks, 80 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 222 SizeOfPredicates, 5 NumberOfNonLiveVariables, 163 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 6/10 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! [2024-11-24 00:57:33,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_29b65094-2628-4b56-b916-849a37c2ad56/bin/uautomizer-verify-LYvppIcaGC/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