./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/40_barrier_vf.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b858ffbb-3f7a-476b-a257-906eef63c199/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b858ffbb-3f7a-476b-a257-906eef63c199/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b858ffbb-3f7a-476b-a257-906eef63c199/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b858ffbb-3f7a-476b-a257-906eef63c199/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/40_barrier_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b858ffbb-3f7a-476b-a257-906eef63c199/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b858ffbb-3f7a-476b-a257-906eef63c199/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e83225601d835c9b02ede9a5751213533e33817a9795ca1ab6ec7c2abd672056 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:15:54,890 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:15:54,951 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b858ffbb-3f7a-476b-a257-906eef63c199/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 13:15:54,956 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:15:54,957 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:15:54,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:15:54,980 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:15:54,980 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:15:54,981 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:15:54,981 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:15:54,981 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:15:54,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:15:54,981 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:15:54,982 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:15:54,982 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:15:54,982 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:15:54,982 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:15:54,982 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:15:54,982 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:15:54,983 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:15:54,983 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 13:15:54,983 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 13:15:54,983 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 13:15:54,983 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:15:54,983 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:15:54,983 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:15:54,984 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:15:54,984 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:15:54,984 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:15:54,984 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:15:54,984 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:15:54,984 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:15:54,984 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:15:54,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:15:54,985 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:15:54,985 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:15:54,985 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:15:54,985 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:15:54,985 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:15:54,985 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:15:54,986 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:15:54,986 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:15:54,986 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_b858ffbb-3f7a-476b-a257-906eef63c199/bin/uautomizer-verify-qhAvR1uOyd 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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> e83225601d835c9b02ede9a5751213533e33817a9795ca1ab6ec7c2abd672056 [2024-11-13 13:15:55,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:15:55,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:15:55,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:15:55,330 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:15:55,331 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:15:55,332 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b858ffbb-3f7a-476b-a257-906eef63c199/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/pthread-ext/40_barrier_vf.i Unable to find full path for "g++" [2024-11-13 13:15:57,408 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:15:57,696 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:15:57,697 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b858ffbb-3f7a-476b-a257-906eef63c199/sv-benchmarks/c/pthread-ext/40_barrier_vf.i [2024-11-13 13:15:57,718 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b858ffbb-3f7a-476b-a257-906eef63c199/bin/uautomizer-verify-qhAvR1uOyd/data/8890b7547/e22b6fb4500c41699cf1558cb16fcc9a/FLAGabaf0d4e2 [2024-11-13 13:15:57,735 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b858ffbb-3f7a-476b-a257-906eef63c199/bin/uautomizer-verify-qhAvR1uOyd/data/8890b7547/e22b6fb4500c41699cf1558cb16fcc9a [2024-11-13 13:15:57,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:15:57,739 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:15:57,742 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:15:57,743 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:15:57,748 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:15:57,749 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:15:57" (1/1) ... [2024-11-13 13:15:57,750 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9d3b86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:57, skipping insertion in model container [2024-11-13 13:15:57,753 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:15:57" (1/1) ... [2024-11-13 13:15:57,803 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:15:58,297 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:15:58,319 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:15:58,360 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:15:58,405 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:15:58,406 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:58 WrapperNode [2024-11-13 13:15:58,406 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:15:58,407 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:15:58,407 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:15:58,407 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:15:58,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:58" (1/1) ... [2024-11-13 13:15:58,435 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:58" (1/1) ... [2024-11-13 13:15:58,482 INFO L138 Inliner]: procedures = 167, calls = 22, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 175 [2024-11-13 13:15:58,482 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:15:58,484 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:15:58,484 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:15:58,486 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:15:58,496 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:58" (1/1) ... [2024-11-13 13:15:58,496 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:58" (1/1) ... [2024-11-13 13:15:58,502 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:58" (1/1) ... [2024-11-13 13:15:58,527 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [2, 8]. The 0 writes are split as follows [0, 0]. [2024-11-13 13:15:58,531 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:58" (1/1) ... [2024-11-13 13:15:58,531 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:58" (1/1) ... [2024-11-13 13:15:58,548 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:58" (1/1) ... [2024-11-13 13:15:58,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:58" (1/1) ... [2024-11-13 13:15:58,558 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:58" (1/1) ... [2024-11-13 13:15:58,563 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:58" (1/1) ... [2024-11-13 13:15:58,566 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:15:58,567 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:15:58,567 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:15:58,567 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:15:58,568 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:58" (1/1) ... [2024-11-13 13:15:58,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:15:58,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b858ffbb-3f7a-476b-a257-906eef63c199/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:15:58,605 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b858ffbb-3f7a-476b-a257-906eef63c199/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:15:58,608 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b858ffbb-3f7a-476b-a257-906eef63c199/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:15:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-13 13:15:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-13 13:15:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-13 13:15:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:15:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 13:15:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 13:15:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:15:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:15:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-13 13:15:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:15:58,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:15:58,640 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:15:58,798 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:15:58,800 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:15:59,112 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:15:59,113 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:16:00,552 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:16:00,553 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 13:16:00,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:16:00 BoogieIcfgContainer [2024-11-13 13:16:00,554 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:16:00,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:16:00,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:16:00,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:16:00,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:15:57" (1/3) ... [2024-11-13 13:16:00,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dd2352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:16:00, skipping insertion in model container [2024-11-13 13:16:00,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:15:58" (2/3) ... [2024-11-13 13:16:00,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48dd2352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:16:00, skipping insertion in model container [2024-11-13 13:16:00,565 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:16:00" (3/3) ... [2024-11-13 13:16:00,567 INFO L112 eAbstractionObserver]: Analyzing ICFG 40_barrier_vf.i [2024-11-13 13:16:00,585 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:16:00,586 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG 40_barrier_vf.i that has 2 procedures, 23 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-13 13:16:00,587 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:16:00,646 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:16:00,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 27 transitions, 58 flow [2024-11-13 13:16:00,764 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2024-11-13 13:16:00,767 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:16:00,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35 conditions, 31 events. 4/31 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-13 13:16:00,771 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 27 transitions, 58 flow [2024-11-13 13:16:00,774 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 27 transitions, 58 flow [2024-11-13 13:16:00,786 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:16:00,807 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=None, 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;@50643926, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:16:00,807 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 13:16:00,826 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:16:00,826 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 13:16:00,827 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:16:00,827 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:16:00,828 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:16:00,828 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:16:00,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:16:00,833 INFO L85 PathProgramCache]: Analyzing trace with hash 434585, now seen corresponding path program 1 times [2024-11-13 13:16:00,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:16:00,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008744533] [2024-11-13 13:16:00,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:00,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:16:01,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:16:01,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:16:01,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008744533] [2024-11-13 13:16:01,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008744533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:16:01,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:16:01,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:16:01,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25822712] [2024-11-13 13:16:01,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:16:01,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:16:01,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:16:01,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:16:01,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:16:01,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-11-13 13:16:01,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 27 transitions, 58 flow. Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-11-13 13:16:01,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:16:01,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-11-13 13:16:01,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:16:01,551 INFO L124 PetriNetUnfolderBase]: 20/63 cut-off events. [2024-11-13 13:16:01,552 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:16:01,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 63 events. 20/63 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 143 event pairs, 14 based on Foata normal form. 9/72 useless extension candidates. Maximal degree in co-relation 101. Up to 47 conditions per place. [2024-11-13 13:16:01,555 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 13 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2024-11-13 13:16:01,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 19 transitions, 68 flow [2024-11-13 13:16:01,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:16:01,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:16:01,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 31 transitions. [2024-11-13 13:16:01,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5740740740740741 [2024-11-13 13:16:01,572 INFO L175 Difference]: Start difference. First operand has 26 places, 27 transitions, 58 flow. Second operand 2 states and 31 transitions. [2024-11-13 13:16:01,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 19 transitions, 68 flow [2024-11-13 13:16:01,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:16:01,583 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow [2024-11-13 13:16:01,586 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2024-11-13 13:16:01,591 INFO L277 CegarLoopForPetriNet]: 26 programPoint places, -5 predicate places. [2024-11-13 13:16:01,591 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow [2024-11-13 13:16:01,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 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) [2024-11-13 13:16:01,591 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:16:01,592 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-13 13:16:01,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:16:01,592 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 13:16:01,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:16:01,593 INFO L85 PathProgramCache]: Analyzing trace with hash 62344769, now seen corresponding path program 1 times [2024-11-13 13:16:01,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:16:01,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306085789] [2024-11-13 13:16:01,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:01,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:01,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:16:01,829 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:16:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:16:01,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:16:01,905 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:16:01,908 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-13 13:16:01,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-13 13:16:01,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-13 13:16:01,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-13 13:16:01,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:16:01,911 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:16:01,913 WARN L247 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:16:01,914 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-13 13:16:01,950 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:16:01,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 47 transitions, 104 flow [2024-11-13 13:16:01,979 INFO L124 PetriNetUnfolderBase]: 8/56 cut-off events. [2024-11-13 13:16:01,980 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 13:16:01,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 56 events. 8/56 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 134 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2024-11-13 13:16:01,982 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 47 transitions, 104 flow [2024-11-13 13:16:01,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 47 transitions, 104 flow [2024-11-13 13:16:01,985 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:16:01,987 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=None, 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;@50643926, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:16:01,988 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-13 13:16:02,018 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:16:02,018 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 13:16:02,018 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:16:02,018 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:16:02,018 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:16:02,019 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-13 13:16:02,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:16:02,019 INFO L85 PathProgramCache]: Analyzing trace with hash 481256, now seen corresponding path program 1 times [2024-11-13 13:16:02,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:16:02,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012797963] [2024-11-13 13:16:02,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:02,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:16:02,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:16:02,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:16:02,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012797963] [2024-11-13 13:16:02,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012797963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:16:02,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:16:02,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:16:02,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487314470] [2024-11-13 13:16:02,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:16:02,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:16:02,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:16:02,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:16:02,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:16:02,371 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 47 [2024-11-13 13:16:02,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 47 transitions, 104 flow. Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2024-11-13 13:16:02,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:16:02,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 47 [2024-11-13 13:16:02,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:16:02,617 INFO L124 PetriNetUnfolderBase]: 471/929 cut-off events. [2024-11-13 13:16:02,617 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-13 13:16:02,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 929 events. 471/929 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4663 event pairs, 330 based on Foata normal form. 159/1070 useless extension candidates. Maximal degree in co-relation 1221. Up to 717 conditions per place. [2024-11-13 13:16:02,633 INFO L140 encePairwiseOnDemand]: 40/47 looper letters, 23 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-13 13:16:02,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 34 transitions, 124 flow [2024-11-13 13:16:02,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:16:02,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:16:02,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 54 transitions. [2024-11-13 13:16:02,636 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.574468085106383 [2024-11-13 13:16:02,636 INFO L175 Difference]: Start difference. First operand has 44 places, 47 transitions, 104 flow. Second operand 2 states and 54 transitions. [2024-11-13 13:16:02,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 34 transitions, 124 flow [2024-11-13 13:16:02,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 34 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:16:02,638 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 78 flow [2024-11-13 13:16:02,638 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=47, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2024-11-13 13:16:02,640 INFO L277 CegarLoopForPetriNet]: 44 programPoint places, -8 predicate places. [2024-11-13 13:16:02,641 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 78 flow [2024-11-13 13:16:02,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 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) [2024-11-13 13:16:02,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:16:02,641 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-13 13:16:02,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 13:16:02,642 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-13 13:16:02,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:16:02,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1313977987, now seen corresponding path program 1 times [2024-11-13 13:16:02,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:16:02,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762593213] [2024-11-13 13:16:02,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:02,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:02,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:16:02,892 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:16:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:16:02,936 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:16:02,937 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:16:02,940 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-13 13:16:02,940 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-13 13:16:02,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-13 13:16:02,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-13 13:16:02,941 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-13 13:16:02,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:16:02,941 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:16:02,942 WARN L247 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:16:02,943 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-13 13:16:02,993 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:16:02,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 62 places, 67 transitions, 152 flow [2024-11-13 13:16:03,025 INFO L124 PetriNetUnfolderBase]: 12/81 cut-off events. [2024-11-13 13:16:03,026 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-13 13:16:03,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 81 events. 12/81 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 228 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2024-11-13 13:16:03,028 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 67 transitions, 152 flow [2024-11-13 13:16:03,030 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 67 transitions, 152 flow [2024-11-13 13:16:03,031 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:16:03,033 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=None, 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;@50643926, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:16:03,033 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-13 13:16:03,044 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:16:03,044 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 13:16:03,044 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:16:03,044 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:16:03,044 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:16:03,044 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 13:16:03,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:16:03,045 INFO L85 PathProgramCache]: Analyzing trace with hash 547787, now seen corresponding path program 1 times [2024-11-13 13:16:03,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:16:03,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277269612] [2024-11-13 13:16:03,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:03,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:03,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:16:03,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:16:03,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:16:03,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277269612] [2024-11-13 13:16:03,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277269612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:16:03,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:16:03,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:16:03,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486770609] [2024-11-13 13:16:03,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:16:03,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:16:03,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:16:03,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:16:03,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:16:03,251 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 67 [2024-11-13 13:16:03,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 152 flow. Second operand has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2024-11-13 13:16:03,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:16:03,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 67 [2024-11-13 13:16:03,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:16:04,682 INFO L124 PetriNetUnfolderBase]: 6962/11245 cut-off events. [2024-11-13 13:16:04,683 INFO L125 PetriNetUnfolderBase]: For 512/512 co-relation queries the response was YES. [2024-11-13 13:16:04,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20752 conditions, 11245 events. 6962/11245 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 73207 event pairs, 4937 based on Foata normal form. 2112/13177 useless extension candidates. Maximal degree in co-relation 3523. Up to 9185 conditions per place. [2024-11-13 13:16:04,855 INFO L140 encePairwiseOnDemand]: 57/67 looper letters, 33 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2024-11-13 13:16:04,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 182 flow [2024-11-13 13:16:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:16:04,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:16:04,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 77 transitions. [2024-11-13 13:16:04,858 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5746268656716418 [2024-11-13 13:16:04,858 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 152 flow. Second operand 2 states and 77 transitions. [2024-11-13 13:16:04,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 182 flow [2024-11-13 13:16:04,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 180 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-13 13:16:04,862 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 114 flow [2024-11-13 13:16:04,862 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-11-13 13:16:04,863 INFO L277 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2024-11-13 13:16:04,865 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 114 flow [2024-11-13 13:16:04,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.0) internal successors, (36), 2 states have internal predecessors, (36), 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) [2024-11-13 13:16:04,865 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:16:04,865 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-13 13:16:04,865 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:16:04,866 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-13 13:16:04,866 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:16:04,866 INFO L85 PathProgramCache]: Analyzing trace with hash 778298976, now seen corresponding path program 1 times [2024-11-13 13:16:04,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:16:04,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574039691] [2024-11-13 13:16:04,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:04,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:16:05,036 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 13:16:05,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 13:16:05,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-13 13:16:05,074 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 13:16:05,074 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-13 13:16:05,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-13 13:16:05,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-13 13:16:05,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-13 13:16:05,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-13 13:16:05,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-13 13:16:05,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:16:05,075 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-13 13:16:05,076 WARN L247 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-13 13:16:05,076 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-13 13:16:05,126 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-13 13:16:05,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 87 transitions, 202 flow [2024-11-13 13:16:05,148 INFO L124 PetriNetUnfolderBase]: 16/106 cut-off events. [2024-11-13 13:16:05,149 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-13 13:16:05,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 106 events. 16/106 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 318 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 93. Up to 5 conditions per place. [2024-11-13 13:16:05,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 87 transitions, 202 flow [2024-11-13 13:16:05,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 87 transitions, 202 flow [2024-11-13 13:16:05,154 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:16:05,155 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=None, 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;@50643926, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:16:05,155 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-13 13:16:05,161 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:16:05,161 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-13 13:16:05,163 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:16:05,163 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:16:05,163 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:16:05,163 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:16:05,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:16:05,164 INFO L85 PathProgramCache]: Analyzing trace with hash 634178, now seen corresponding path program 1 times [2024-11-13 13:16:05,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:16:05,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362385136] [2024-11-13 13:16:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:05,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:16:05,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:16:05,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:16:05,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362385136] [2024-11-13 13:16:05,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362385136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:16:05,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:16:05,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:16:05,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909830176] [2024-11-13 13:16:05,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:16:05,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 13:16:05,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:16:05,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 13:16:05,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 13:16:05,403 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-13 13:16:05,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 87 transitions, 202 flow. Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-11-13 13:16:05,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:16:05,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-13 13:16:05,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:16:15,231 INFO L124 PetriNetUnfolderBase]: 87130/125844 cut-off events. [2024-11-13 13:16:15,231 INFO L125 PetriNetUnfolderBase]: For 8089/8089 co-relation queries the response was YES. [2024-11-13 13:16:15,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236608 conditions, 125844 events. 87130/125844 cut-off events. For 8089/8089 co-relation queries the response was YES. Maximal size of possible extension queue 3978. Compared 931509 event pairs, 62218 based on Foata normal form. 25604/149815 useless extension candidates. Maximal degree in co-relation 20829. Up to 107146 conditions per place. [2024-11-13 13:16:15,945 INFO L140 encePairwiseOnDemand]: 74/87 looper letters, 43 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2024-11-13 13:16:15,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 64 transitions, 242 flow [2024-11-13 13:16:15,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 13:16:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 13:16:15,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 100 transitions. [2024-11-13 13:16:15,947 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5747126436781609 [2024-11-13 13:16:15,947 INFO L175 Difference]: Start difference. First operand has 80 places, 87 transitions, 202 flow. Second operand 2 states and 100 transitions. [2024-11-13 13:16:15,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 64 transitions, 242 flow [2024-11-13 13:16:15,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 236 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-13 13:16:15,963 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 150 flow [2024-11-13 13:16:15,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2024-11-13 13:16:15,964 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, -14 predicate places. [2024-11-13 13:16:15,966 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 150 flow [2024-11-13 13:16:15,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 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) [2024-11-13 13:16:15,966 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:16:15,966 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:16:15,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:16:15,966 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:16:15,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:16:15,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1065680407, now seen corresponding path program 1 times [2024-11-13 13:16:15,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:16:15,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871073028] [2024-11-13 13:16:15,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:15,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:16:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:16:16,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:16:16,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871073028] [2024-11-13 13:16:16,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871073028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:16:16,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:16:16,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:16:16,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966118381] [2024-11-13 13:16:16,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:16:16,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:16:16,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:16:16,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:16:16,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:16:16,260 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-13 13:16:16,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 150 flow. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-11-13 13:16:16,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:16:16,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-13 13:16:16,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:16:35,490 INFO L124 PetriNetUnfolderBase]: 184809/277386 cut-off events. [2024-11-13 13:16:35,490 INFO L125 PetriNetUnfolderBase]: For 4843/4843 co-relation queries the response was YES. [2024-11-13 13:16:36,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511691 conditions, 277386 events. 184809/277386 cut-off events. For 4843/4843 co-relation queries the response was YES. Maximal size of possible extension queue 12031. Compared 2515132 event pairs, 49795 based on Foata normal form. 12267/288102 useless extension candidates. Maximal degree in co-relation 511684. Up to 83388 conditions per place. [2024-11-13 13:16:37,187 INFO L140 encePairwiseOnDemand]: 78/87 looper letters, 103 selfloop transitions, 13 changer transitions 0/137 dead transitions. [2024-11-13 13:16:37,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 137 transitions, 553 flow [2024-11-13 13:16:37,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:16:37,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:16:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 212 transitions. [2024-11-13 13:16:37,189 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6091954022988506 [2024-11-13 13:16:37,189 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 150 flow. Second operand 4 states and 212 transitions. [2024-11-13 13:16:37,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 137 transitions, 553 flow [2024-11-13 13:16:37,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 137 transitions, 553 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 13:16:37,202 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 200 flow [2024-11-13 13:16:37,202 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=87, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2024-11-13 13:16:37,207 INFO L277 CegarLoopForPetriNet]: 80 programPoint places, -11 predicate places. [2024-11-13 13:16:37,207 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 200 flow [2024-11-13 13:16:37,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 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) [2024-11-13 13:16:37,207 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:16:37,207 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:16:37,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:16:37,208 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-13 13:16:37,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:16:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash 2053250023, now seen corresponding path program 1 times [2024-11-13 13:16:37,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:16:37,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522507963] [2024-11-13 13:16:37,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:16:37,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:16:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:16:37,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:16:37,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:16:37,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522507963] [2024-11-13 13:16:37,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522507963] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:16:37,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:16:37,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:16:37,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470030055] [2024-11-13 13:16:37,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:16:37,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:16:37,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:16:37,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:16:37,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:16:37,569 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 87 [2024-11-13 13:16:37,569 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 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) [2024-11-13 13:16:37,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:16:37,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 87 [2024-11-13 13:16:37,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand