./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1 --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 801883caffd8b582a36607f9ec62109ac5c5dc10c811693a281fb396b4b60131 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 07:55:58,548 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 07:55:58,606 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 07:55:58,611 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 07:55:58,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 07:55:58,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 07:55:58,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 07:55:58,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 07:55:58,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 07:55:58,635 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 07:55:58,635 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 07:55:58,635 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 07:55:58,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 07:55:58,636 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 07:55:58,636 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 07:55:58,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 07:55:58,636 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 07:55:58,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 07:55:58,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 07:55:58,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 07:55:58,636 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 07:55:58,636 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 07:55:58,636 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 07:55:58,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 07:55:58,637 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 07:55:58,637 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 07:55:58,637 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 07:55:58,637 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 07:55:58,637 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 07:55:58,637 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 07:55:58,637 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:55:58,637 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:55:58,637 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:55:58,637 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:55:58,637 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 07:55:58,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 07:55:58,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 07:55:58,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 07:55:58,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:55:58,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 07:55:58,638 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 07:55:58,638 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 07:55:58,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 07:55:58,638 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 07:55:58,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 07:55:58,638 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 07:55:58,638 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 07:55:58,638 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_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1 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 -> 801883caffd8b582a36607f9ec62109ac5c5dc10c811693a281fb396b4b60131 [2024-12-02 07:55:58,895 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 07:55:58,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 07:55:58,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 07:55:58,908 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 07:55:58,908 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 07:55:58,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-12-02 07:56:01,619 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1/data/68298d1a3/0b3e46527fb84077a2d81da3a5906383/FLAG3d5121b79 [2024-12-02 07:56:01,886 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 07:56:01,887 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/sv-benchmarks/c/pthread-ext/48_ticket_lock_low_contention_vs-pthread.i [2024-12-02 07:56:01,900 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1/data/68298d1a3/0b3e46527fb84077a2d81da3a5906383/FLAG3d5121b79 [2024-12-02 07:56:01,918 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1/data/68298d1a3/0b3e46527fb84077a2d81da3a5906383 [2024-12-02 07:56:01,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 07:56:01,923 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 07:56:01,924 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 07:56:01,925 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 07:56:01,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 07:56:01,931 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:56:01" (1/1) ... [2024-12-02 07:56:01,931 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24e1d1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:01, skipping insertion in model container [2024-12-02 07:56:01,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 07:56:01" (1/1) ... [2024-12-02 07:56:01,956 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 07:56:02,268 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:56:02,284 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 07:56:02,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 07:56:02,366 INFO L204 MainTranslator]: Completed translation [2024-12-02 07:56:02,367 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02 WrapperNode [2024-12-02 07:56:02,367 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 07:56:02,369 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 07:56:02,369 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 07:56:02,369 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 07:56:02,377 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02" (1/1) ... [2024-12-02 07:56:02,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02" (1/1) ... [2024-12-02 07:56:02,408 INFO L138 Inliner]: procedures = 164, calls = 17, calls flagged for inlining = 4, calls inlined = 5, statements flattened = 66 [2024-12-02 07:56:02,409 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 07:56:02,409 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 07:56:02,409 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 07:56:02,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 07:56:02,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02" (1/1) ... [2024-12-02 07:56:02,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02" (1/1) ... [2024-12-02 07:56:02,422 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02" (1/1) ... [2024-12-02 07:56:02,434 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-12-02 07:56:02,434 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02" (1/1) ... [2024-12-02 07:56:02,434 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02" (1/1) ... [2024-12-02 07:56:02,438 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02" (1/1) ... [2024-12-02 07:56:02,439 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02" (1/1) ... [2024-12-02 07:56:02,442 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02" (1/1) ... [2024-12-02 07:56:02,442 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02" (1/1) ... [2024-12-02 07:56:02,443 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02" (1/1) ... [2024-12-02 07:56:02,445 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 07:56:02,446 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 07:56:02,446 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 07:56:02,446 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 07:56:02,447 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02" (1/1) ... [2024-12-02 07:56:02,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 07:56:02,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 07:56:02,479 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 07:56:02,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_edca7770-3741-4d44-af22-351c08073b2a/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 07:56:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-12-02 07:56:02,508 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-12-02 07:56:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 07:56:02,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 07:56:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 07:56:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 07:56:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 07:56:02,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 07:56:02,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 07:56:02,511 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 07:56:02,619 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 07:56:02,621 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 07:56:02,764 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 07:56:02,764 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 07:56:02,874 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 07:56:02,874 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-12-02 07:56:02,874 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:56:02 BoogieIcfgContainer [2024-12-02 07:56:02,874 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 07:56:02,877 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 07:56:02,877 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 07:56:02,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 07:56:02,883 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 07:56:01" (1/3) ... [2024-12-02 07:56:02,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b2ce7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:56:02, skipping insertion in model container [2024-12-02 07:56:02,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 07:56:02" (2/3) ... [2024-12-02 07:56:02,884 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23b2ce7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 07:56:02, skipping insertion in model container [2024-12-02 07:56:02,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 07:56:02" (3/3) ... [2024-12-02 07:56:02,886 INFO L128 eAbstractionObserver]: Analyzing ICFG 48_ticket_lock_low_contention_vs-pthread.i [2024-12-02 07:56:02,904 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 07:56:02,905 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 48_ticket_lock_low_contention_vs-pthread.i that has 2 procedures, 30 locations, 1 initial locations, 1 loop locations, and 3 error locations. [2024-12-02 07:56:02,905 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 07:56:02,947 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 07:56:02,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 33 places, 35 transitions, 74 flow [2024-12-02 07:56:03,027 INFO L124 PetriNetUnfolderBase]: 8/54 cut-off events. [2024-12-02 07:56:03,031 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 07:56:03,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 54 events. 8/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 32. Up to 4 conditions per place. [2024-12-02 07:56:03,034 INFO L82 GeneralOperation]: Start removeDead. Operand has 33 places, 35 transitions, 74 flow [2024-12-02 07:56:03,037 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 35 transitions, 74 flow [2024-12-02 07:56:03,045 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:56:03,058 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;@79d2f95c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:56:03,058 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-12-02 07:56:03,077 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 07:56:03,077 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-12-02 07:56:03,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 07:56:03,077 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:56:03,078 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2024-12-02 07:56:03,079 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 2 more)] === [2024-12-02 07:56:03,085 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:03,085 INFO L85 PathProgramCache]: Analyzing trace with hash 157571686, now seen corresponding path program 1 times [2024-12-02 07:56:03,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:03,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365944574] [2024-12-02 07:56:03,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:03,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:56:03,201 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 07:56:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:56:03,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 07:56:03,239 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 07:56:03,241 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-12-02 07:56:03,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-12-02 07:56:03,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-12-02 07:56:03,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-12-02 07:56:03,243 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-12-02 07:56:03,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 07:56:03,244 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2024-12-02 07:56:03,247 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 07:56:03,247 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 07:56:03,269 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 07:56:03,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 47 places, 49 transitions, 108 flow [2024-12-02 07:56:03,295 INFO L124 PetriNetUnfolderBase]: 13/87 cut-off events. [2024-12-02 07:56:03,295 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 07:56:03,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95 conditions, 87 events. 13/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 306 event pairs, 0 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 56. Up to 6 conditions per place. [2024-12-02 07:56:03,296 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 49 transitions, 108 flow [2024-12-02 07:56:03,297 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 49 transitions, 108 flow [2024-12-02 07:56:03,299 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:56:03,300 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;@79d2f95c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:56:03,300 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-12-02 07:56:03,308 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 07:56:03,308 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-12-02 07:56:03,308 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 07:56:03,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:56:03,308 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:56:03,309 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-12-02 07:56:03,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:03,309 INFO L85 PathProgramCache]: Analyzing trace with hash 743436492, now seen corresponding path program 1 times [2024-12-02 07:56:03,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:03,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781691333] [2024-12-02 07:56:03,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:03,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:03,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:56:03,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:03,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781691333] [2024-12-02 07:56:03,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781691333] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:03,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:03,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:56:03,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011189905] [2024-12-02 07:56:03,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:03,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:56:03,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:03,423 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:56:03,423 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:56:03,425 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 49 [2024-12-02 07:56:03,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 108 flow. Second operand has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2024-12-02 07:56:03,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:56:03,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 49 [2024-12-02 07:56:03,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:56:03,728 INFO L124 PetriNetUnfolderBase]: 680/1512 cut-off events. [2024-12-02 07:56:03,728 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-12-02 07:56:03,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2689 conditions, 1512 events. 680/1512 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 10268 event pairs, 680 based on Foata normal form. 354/1782 useless extension candidates. Maximal degree in co-relation 1927. Up to 1154 conditions per place. [2024-12-02 07:56:03,742 INFO L140 encePairwiseOnDemand]: 42/49 looper letters, 23 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2024-12-02 07:56:03,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 39 transitions, 134 flow [2024-12-02 07:56:03,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:56:03,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 07:56:03,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 62 transitions. [2024-12-02 07:56:03,757 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6326530612244898 [2024-12-02 07:56:03,759 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 108 flow. Second operand 2 states and 62 transitions. [2024-12-02 07:56:03,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 39 transitions, 134 flow [2024-12-02 07:56:03,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 07:56:03,767 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 88 flow [2024-12-02 07:56:03,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-12-02 07:56:03,775 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, -2 predicate places. [2024-12-02 07:56:03,775 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 88 flow [2024-12-02 07:56:03,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 19.0) internal successors, (38), 2 states have internal predecessors, (38), 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) [2024-12-02 07:56:03,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:56:03,775 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:56:03,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 07:56:03,776 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-12-02 07:56:03,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:03,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1986174764, now seen corresponding path program 1 times [2024-12-02 07:56:03,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:03,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148411014] [2024-12-02 07:56:03,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:03,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:56:03,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:03,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148411014] [2024-12-02 07:56:03,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148411014] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:03,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:03,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:56:03,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129635521] [2024-12-02 07:56:03,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:03,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:56:03,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:03,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:56:03,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:56:03,932 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 49 [2024-12-02 07:56:03,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-12-02 07:56:03,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:56:03,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 49 [2024-12-02 07:56:03,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:56:04,326 INFO L124 PetriNetUnfolderBase]: 1080/2300 cut-off events. [2024-12-02 07:56:04,326 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2024-12-02 07:56:04,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4146 conditions, 2300 events. 1080/2300 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 16251 event pairs, 687 based on Foata normal form. 206/2448 useless extension candidates. Maximal degree in co-relation 4141. Up to 1386 conditions per place. [2024-12-02 07:56:04,344 INFO L140 encePairwiseOnDemand]: 40/49 looper letters, 41 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-12-02 07:56:04,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 60 transitions, 229 flow [2024-12-02 07:56:04,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:56:04,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:56:04,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-12-02 07:56:04,346 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6054421768707483 [2024-12-02 07:56:04,346 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 88 flow. Second operand 3 states and 89 transitions. [2024-12-02 07:56:04,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 60 transitions, 229 flow [2024-12-02 07:56:04,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 07:56:04,351 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 142 flow [2024-12-02 07:56:04,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=49, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2024-12-02 07:56:04,352 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 2 predicate places. [2024-12-02 07:56:04,352 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 142 flow [2024-12-02 07:56:04,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 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) [2024-12-02 07:56:04,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:56:04,352 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1] [2024-12-02 07:56:04,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 07:56:04,353 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 3 more)] === [2024-12-02 07:56:04,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:04,353 INFO L85 PathProgramCache]: Analyzing trace with hash 547898454, now seen corresponding path program 1 times [2024-12-02 07:56:04,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:04,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485266508] [2024-12-02 07:56:04,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:04,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:56:04,374 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 07:56:04,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:56:04,389 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 07:56:04,390 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 07:56:04,390 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-12-02 07:56:04,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-12-02 07:56:04,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-12-02 07:56:04,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-12-02 07:56:04,390 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-12-02 07:56:04,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-12-02 07:56:04,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 07:56:04,391 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-12-02 07:56:04,392 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 07:56:04,392 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 07:56:04,418 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 07:56:04,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 63 transitions, 144 flow [2024-12-02 07:56:04,440 INFO L124 PetriNetUnfolderBase]: 18/120 cut-off events. [2024-12-02 07:56:04,440 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-12-02 07:56:04,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133 conditions, 120 events. 18/120 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 473 event pairs, 0 based on Foata normal form. 0/87 useless extension candidates. Maximal degree in co-relation 93. Up to 8 conditions per place. [2024-12-02 07:56:04,442 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 63 transitions, 144 flow [2024-12-02 07:56:04,443 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 61 places, 63 transitions, 144 flow [2024-12-02 07:56:04,444 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:56:04,445 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;@79d2f95c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:56:04,445 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-12-02 07:56:04,450 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 07:56:04,451 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-12-02 07:56:04,451 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 07:56:04,451 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:56:04,451 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:56:04,451 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 07:56:04,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:04,452 INFO L85 PathProgramCache]: Analyzing trace with hash 813252684, now seen corresponding path program 1 times [2024-12-02 07:56:04,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:04,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698244944] [2024-12-02 07:56:04,452 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:04,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:04,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:56:04,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:04,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698244944] [2024-12-02 07:56:04,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698244944] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:04,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:04,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:56:04,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836176066] [2024-12-02 07:56:04,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:04,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:56:04,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:04,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:56:04,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:56:04,477 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 63 [2024-12-02 07:56:04,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 63 transitions, 144 flow. Second operand has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2024-12-02 07:56:04,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:56:04,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 63 [2024-12-02 07:56:04,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:56:05,702 INFO L124 PetriNetUnfolderBase]: 6440/11494 cut-off events. [2024-12-02 07:56:05,702 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2024-12-02 07:56:05,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20952 conditions, 11494 events. 6440/11494 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 91646 event pairs, 6440 based on Foata normal form. 3066/14061 useless extension candidates. Maximal degree in co-relation 4459. Up to 9290 conditions per place. [2024-12-02 07:56:05,750 INFO L140 encePairwiseOnDemand]: 54/63 looper letters, 29 selfloop transitions, 0 changer transitions 0/50 dead transitions. [2024-12-02 07:56:05,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 176 flow [2024-12-02 07:56:05,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:56:05,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 07:56:05,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 80 transitions. [2024-12-02 07:56:05,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6349206349206349 [2024-12-02 07:56:05,752 INFO L175 Difference]: Start difference. First operand has 61 places, 63 transitions, 144 flow. Second operand 2 states and 80 transitions. [2024-12-02 07:56:05,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 176 flow [2024-12-02 07:56:05,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 50 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-12-02 07:56:05,754 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 116 flow [2024-12-02 07:56:05,754 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2024-12-02 07:56:05,755 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, -3 predicate places. [2024-12-02 07:56:05,755 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 116 flow [2024-12-02 07:56:05,755 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 24.0) internal successors, (48), 2 states have internal predecessors, (48), 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) [2024-12-02 07:56:05,755 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:56:05,755 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:56:05,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 07:56:05,756 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 07:56:05,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:05,756 INFO L85 PathProgramCache]: Analyzing trace with hash 178127251, now seen corresponding path program 1 times [2024-12-02 07:56:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:05,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487113729] [2024-12-02 07:56:05,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:05,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:05,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:05,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:56:05,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:05,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487113729] [2024-12-02 07:56:05,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487113729] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:05,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:05,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:56:05,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321239487] [2024-12-02 07:56:05,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:05,834 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:56:05,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:05,834 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:56:05,835 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:56:05,855 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 63 [2024-12-02 07:56:05,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-12-02 07:56:05,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:56:05,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 63 [2024-12-02 07:56:05,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:56:08,191 INFO L124 PetriNetUnfolderBase]: 13477/23774 cut-off events. [2024-12-02 07:56:08,191 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-12-02 07:56:08,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43372 conditions, 23774 events. 13477/23774 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 1188. Compared 206991 event pairs, 8161 based on Foata normal form. 2081/25389 useless extension candidates. Maximal degree in co-relation 43366. Up to 14060 conditions per place. [2024-12-02 07:56:08,319 INFO L140 encePairwiseOnDemand]: 51/63 looper letters, 52 selfloop transitions, 8 changer transitions 0/77 dead transitions. [2024-12-02 07:56:08,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 77 transitions, 300 flow [2024-12-02 07:56:08,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:56:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:56:08,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-12-02 07:56:08,322 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6084656084656085 [2024-12-02 07:56:08,322 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 116 flow. Second operand 3 states and 115 transitions. [2024-12-02 07:56:08,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 77 transitions, 300 flow [2024-12-02 07:56:08,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 77 transitions, 300 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 07:56:08,326 INFO L231 Difference]: Finished difference. Result has 62 places, 58 transitions, 188 flow [2024-12-02 07:56:08,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=62, PETRI_TRANSITIONS=58} [2024-12-02 07:56:08,327 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 1 predicate places. [2024-12-02 07:56:08,327 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 58 transitions, 188 flow [2024-12-02 07:56:08,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 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) [2024-12-02 07:56:08,328 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:56:08,328 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:56:08,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 07:56:08,328 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 07:56:08,329 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:08,329 INFO L85 PathProgramCache]: Analyzing trace with hash -618648839, now seen corresponding path program 1 times [2024-12-02 07:56:08,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:08,329 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948116723] [2024-12-02 07:56:08,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:08,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:08,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:08,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:56:08,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:08,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948116723] [2024-12-02 07:56:08,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948116723] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:08,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:08,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 07:56:08,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887746068] [2024-12-02 07:56:08,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:08,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:56:08,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:08,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:56:08,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:56:08,385 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 63 [2024-12-02 07:56:08,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-12-02 07:56:08,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:56:08,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 63 [2024-12-02 07:56:08,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:56:09,873 INFO L124 PetriNetUnfolderBase]: 10881/20172 cut-off events. [2024-12-02 07:56:09,874 INFO L125 PetriNetUnfolderBase]: For 7378/7528 co-relation queries the response was YES. [2024-12-02 07:56:09,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44689 conditions, 20172 events. 10881/20172 cut-off events. For 7378/7528 co-relation queries the response was YES. Maximal size of possible extension queue 1106. Compared 180863 event pairs, 9371 based on Foata normal form. 127/19604 useless extension candidates. Maximal degree in co-relation 44681. Up to 14599 conditions per place. [2024-12-02 07:56:09,983 INFO L140 encePairwiseOnDemand]: 61/63 looper letters, 32 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2024-12-02 07:56:09,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 252 flow [2024-12-02 07:56:09,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:56:09,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:56:09,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-12-02 07:56:09,985 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-12-02 07:56:09,985 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 188 flow. Second operand 3 states and 90 transitions. [2024-12-02 07:56:09,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 252 flow [2024-12-02 07:56:10,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 07:56:10,004 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 172 flow [2024-12-02 07:56:10,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=63, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-12-02 07:56:10,005 INFO L279 CegarLoopForPetriNet]: 61 programPoint places, 0 predicate places. [2024-12-02 07:56:10,005 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 172 flow [2024-12-02 07:56:10,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 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) [2024-12-02 07:56:10,006 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:56:10,006 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1] [2024-12-02 07:56:10,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 07:56:10,006 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 4 more)] === [2024-12-02 07:56:10,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:10,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1328592853, now seen corresponding path program 1 times [2024-12-02 07:56:10,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:10,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439771882] [2024-12-02 07:56:10,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:10,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:56:10,023 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 07:56:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:56:10,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 07:56:10,038 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 07:56:10,038 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2024-12-02 07:56:10,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 7 remaining) [2024-12-02 07:56:10,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (4 of 7 remaining) [2024-12-02 07:56:10,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (3 of 7 remaining) [2024-12-02 07:56:10,038 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 7 remaining) [2024-12-02 07:56:10,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 7 remaining) [2024-12-02 07:56:10,039 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2024-12-02 07:56:10,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 07:56:10,039 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-12-02 07:56:10,040 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 07:56:10,040 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-12-02 07:56:10,066 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 07:56:10,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 75 places, 77 transitions, 182 flow [2024-12-02 07:56:10,079 INFO L124 PetriNetUnfolderBase]: 23/153 cut-off events. [2024-12-02 07:56:10,079 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-12-02 07:56:10,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 153 events. 23/153 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 621 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 131. Up to 10 conditions per place. [2024-12-02 07:56:10,080 INFO L82 GeneralOperation]: Start removeDead. Operand has 75 places, 77 transitions, 182 flow [2024-12-02 07:56:10,081 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 77 transitions, 182 flow [2024-12-02 07:56:10,082 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:56:10,083 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;@79d2f95c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:56:10,083 INFO L334 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2024-12-02 07:56:10,085 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 07:56:10,085 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-12-02 07:56:10,086 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 07:56:10,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:56:10,086 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:56:10,086 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-12-02 07:56:10,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:10,086 INFO L85 PathProgramCache]: Analyzing trace with hash -533072180, now seen corresponding path program 1 times [2024-12-02 07:56:10,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:10,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77326662] [2024-12-02 07:56:10,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:10,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:10,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:10,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:56:10,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:10,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77326662] [2024-12-02 07:56:10,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77326662] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:10,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:10,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:56:10,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562254482] [2024-12-02 07:56:10,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:10,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:56:10,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:10,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:56:10,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:56:10,102 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 77 [2024-12-02 07:56:10,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 77 transitions, 182 flow. Second operand has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-12-02 07:56:10,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:56:10,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 77 [2024-12-02 07:56:10,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:56:15,233 INFO L124 PetriNetUnfolderBase]: 52880/83510 cut-off events. [2024-12-02 07:56:15,234 INFO L125 PetriNetUnfolderBase]: For 3018/3018 co-relation queries the response was YES. [2024-12-02 07:56:15,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154745 conditions, 83510 events. 52880/83510 cut-off events. For 3018/3018 co-relation queries the response was YES. Maximal size of possible extension queue 3449. Compared 738053 event pairs, 52880 based on Foata normal form. 24138/104741 useless extension candidates. Maximal degree in co-relation 21051. Up to 69986 conditions per place. [2024-12-02 07:56:15,592 INFO L140 encePairwiseOnDemand]: 66/77 looper letters, 35 selfloop transitions, 0 changer transitions 0/61 dead transitions. [2024-12-02 07:56:15,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 61 transitions, 220 flow [2024-12-02 07:56:15,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:56:15,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 07:56:15,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 98 transitions. [2024-12-02 07:56:15,594 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-12-02 07:56:15,594 INFO L175 Difference]: Start difference. First operand has 75 places, 77 transitions, 182 flow. Second operand 2 states and 98 transitions. [2024-12-02 07:56:15,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 61 transitions, 220 flow [2024-12-02 07:56:15,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 61 transitions, 214 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-12-02 07:56:15,597 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 144 flow [2024-12-02 07:56:15,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=144, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2024-12-02 07:56:15,598 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2024-12-02 07:56:15,598 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 144 flow [2024-12-02 07:56:15,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2024-12-02 07:56:15,598 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:56:15,598 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:56:15,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 07:56:15,598 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-12-02 07:56:15,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:15,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1391729504, now seen corresponding path program 1 times [2024-12-02 07:56:15,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:15,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110366638] [2024-12-02 07:56:15,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:15,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:15,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:15,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:56:15,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:15,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110366638] [2024-12-02 07:56:15,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110366638] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:15,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:15,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:56:15,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849749310] [2024-12-02 07:56:15,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:15,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:56:15,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:15,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:56:15,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:56:15,691 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 77 [2024-12-02 07:56:15,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-12-02 07:56:15,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:56:15,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 77 [2024-12-02 07:56:15,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:56:29,103 INFO L124 PetriNetUnfolderBase]: 141969/224625 cut-off events. [2024-12-02 07:56:29,103 INFO L125 PetriNetUnfolderBase]: For 2050/2050 co-relation queries the response was YES. [2024-12-02 07:56:29,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414310 conditions, 224625 events. 141969/224625 cut-off events. For 2050/2050 co-relation queries the response was YES. Maximal size of possible extension queue 8636. Compared 2193521 event pairs, 82899 based on Foata normal form. 19479/240392 useless extension candidates. Maximal degree in co-relation 414303. Up to 130411 conditions per place. [2024-12-02 07:56:30,092 INFO L140 encePairwiseOnDemand]: 62/77 looper letters, 63 selfloop transitions, 10 changer transitions 0/94 dead transitions. [2024-12-02 07:56:30,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 94 transitions, 371 flow [2024-12-02 07:56:30,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:56:30,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:56:30,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 141 transitions. [2024-12-02 07:56:30,094 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6103896103896104 [2024-12-02 07:56:30,094 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 144 flow. Second operand 3 states and 141 transitions. [2024-12-02 07:56:30,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 94 transitions, 371 flow [2024-12-02 07:56:30,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 94 transitions, 371 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 07:56:30,100 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 234 flow [2024-12-02 07:56:30,100 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-12-02 07:56:30,101 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2024-12-02 07:56:30,101 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 234 flow [2024-12-02 07:56:30,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 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) [2024-12-02 07:56:30,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:56:30,101 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:56:30,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 07:56:30,101 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-12-02 07:56:30,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:30,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1716981542, now seen corresponding path program 1 times [2024-12-02 07:56:30,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:30,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052313209] [2024-12-02 07:56:30,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:30,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:30,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:56:30,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:30,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052313209] [2024-12-02 07:56:30,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052313209] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:30,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:30,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 07:56:30,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985503851] [2024-12-02 07:56:30,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:30,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:56:30,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:30,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:56:30,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:56:30,133 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 77 [2024-12-02 07:56:30,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-12-02 07:56:30,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:56:30,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 77 [2024-12-02 07:56:30,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:56:42,493 INFO L124 PetriNetUnfolderBase]: 117405/192139 cut-off events. [2024-12-02 07:56:42,493 INFO L125 PetriNetUnfolderBase]: For 69658/70744 co-relation queries the response was YES. [2024-12-02 07:56:42,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 432668 conditions, 192139 events. 117405/192139 cut-off events. For 69658/70744 co-relation queries the response was YES. Maximal size of possible extension queue 7913. Compared 1939272 event pairs, 99665 based on Foata normal form. 783/187295 useless extension candidates. Maximal degree in co-relation 432659. Up to 142201 conditions per place. [2024-12-02 07:56:43,712 INFO L140 encePairwiseOnDemand]: 75/77 looper letters, 39 selfloop transitions, 1 changer transitions 0/70 dead transitions. [2024-12-02 07:56:43,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 70 transitions, 312 flow [2024-12-02 07:56:43,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 07:56:43,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 07:56:43,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-12-02 07:56:43,714 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4805194805194805 [2024-12-02 07:56:43,714 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 234 flow. Second operand 3 states and 111 transitions. [2024-12-02 07:56:43,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 70 transitions, 312 flow [2024-12-02 07:56:43,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 70 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 07:56:43,828 INFO L231 Difference]: Finished difference. Result has 74 places, 70 transitions, 214 flow [2024-12-02 07:56:43,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=77, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=74, PETRI_TRANSITIONS=70} [2024-12-02 07:56:43,829 INFO L279 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-12-02 07:56:43,829 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 70 transitions, 214 flow [2024-12-02 07:56:43,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 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) [2024-12-02 07:56:43,829 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:56:43,830 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1] [2024-12-02 07:56:43,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 07:56:43,830 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 5 more)] === [2024-12-02 07:56:43,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:43,830 INFO L85 PathProgramCache]: Analyzing trace with hash 321063247, now seen corresponding path program 1 times [2024-12-02 07:56:43,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:43,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186891739] [2024-12-02 07:56:43,830 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:43,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:43,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:56:43,845 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 07:56:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 07:56:43,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 07:56:43,856 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 07:56:43,856 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 8 remaining) [2024-12-02 07:56:43,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (6 of 8 remaining) [2024-12-02 07:56:43,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (5 of 8 remaining) [2024-12-02 07:56:43,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (4 of 8 remaining) [2024-12-02 07:56:43,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 8 remaining) [2024-12-02 07:56:43,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2024-12-02 07:56:43,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 8 remaining) [2024-12-02 07:56:43,857 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 8 remaining) [2024-12-02 07:56:43,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 07:56:43,858 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-12-02 07:56:43,858 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 07:56:43,858 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-12-02 07:56:43,882 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 07:56:43,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 89 places, 91 transitions, 222 flow [2024-12-02 07:56:43,893 INFO L124 PetriNetUnfolderBase]: 28/186 cut-off events. [2024-12-02 07:56:43,893 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-12-02 07:56:43,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 186 events. 28/186 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 781 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 170. Up to 12 conditions per place. [2024-12-02 07:56:43,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 89 places, 91 transitions, 222 flow [2024-12-02 07:56:43,894 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 91 transitions, 222 flow [2024-12-02 07:56:43,895 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 07:56:43,896 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;@79d2f95c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 07:56:43,896 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-12-02 07:56:43,897 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 07:56:43,897 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-12-02 07:56:43,897 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-12-02 07:56:43,897 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:56:43,897 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:56:43,897 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2024-12-02 07:56:43,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:56:43,898 INFO L85 PathProgramCache]: Analyzing trace with hash 999429196, now seen corresponding path program 1 times [2024-12-02 07:56:43,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:56:43,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82809740] [2024-12-02 07:56:43,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:56:43,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:56:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:56:43,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:56:43,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:56:43,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82809740] [2024-12-02 07:56:43,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82809740] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:56:43,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:56:43,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 07:56:43,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021639691] [2024-12-02 07:56:43,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:56:43,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 07:56:43,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:56:43,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 07:56:43,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 07:56:43,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 91 [2024-12-02 07:56:43,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 91 transitions, 222 flow. Second operand has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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) [2024-12-02 07:56:43,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:56:43,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 91 [2024-12-02 07:56:43,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 07:57:23,812 INFO L124 PetriNetUnfolderBase]: 402800/586886 cut-off events. [2024-12-02 07:57:23,812 INFO L125 PetriNetUnfolderBase]: For 28338/28338 co-relation queries the response was YES. [2024-12-02 07:57:24,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101354 conditions, 586886 events. 402800/586886 cut-off events. For 28338/28338 co-relation queries the response was YES. Maximal size of possible extension queue 20225. Compared 5497472 event pairs, 402800 based on Foata normal form. 179082/748613 useless extension candidates. Maximal degree in co-relation 155059. Up to 505442 conditions per place. [2024-12-02 07:57:27,281 INFO L140 encePairwiseOnDemand]: 78/91 looper letters, 41 selfloop transitions, 0 changer transitions 0/72 dead transitions. [2024-12-02 07:57:27,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 72 transitions, 266 flow [2024-12-02 07:57:27,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 07:57:27,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 07:57:27,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 116 transitions. [2024-12-02 07:57:27,283 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6373626373626373 [2024-12-02 07:57:27,283 INFO L175 Difference]: Start difference. First operand has 89 places, 91 transitions, 222 flow. Second operand 2 states and 116 transitions. [2024-12-02 07:57:27,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 72 transitions, 266 flow [2024-12-02 07:57:27,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 72 transitions, 254 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-12-02 07:57:27,298 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 172 flow [2024-12-02 07:57:27,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=172, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2024-12-02 07:57:27,299 INFO L279 CegarLoopForPetriNet]: 89 programPoint places, -5 predicate places. [2024-12-02 07:57:27,299 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 172 flow [2024-12-02 07:57:27,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 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) [2024-12-02 07:57:27,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 07:57:27,299 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 07:57:27,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 07:57:27,299 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK (and 6 more)] === [2024-12-02 07:57:27,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 07:57:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1654631995, now seen corresponding path program 1 times [2024-12-02 07:57:27,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 07:57:27,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156545512] [2024-12-02 07:57:27,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 07:57:27,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 07:57:27,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 07:57:27,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 07:57:27,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 07:57:27,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156545512] [2024-12-02 07:57:27,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156545512] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 07:57:27,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 07:57:27,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 07:57:27,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280444765] [2024-12-02 07:57:27,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 07:57:27,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 07:57:27,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 07:57:27,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 07:57:27,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 07:57:27,373 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 91 [2024-12-02 07:57:27,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 172 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2024-12-02 07:57:27,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 07:57:27,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 91 [2024-12-02 07:57:27,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand