./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.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_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/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_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/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_af9d84cd-a39a-41c5-8a28-7bb92fab7379/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 f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 08:56:49,788 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 08:56:49,842 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 08:56:49,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 08:56:49,846 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 08:56:49,866 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 08:56:49,867 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 08:56:49,867 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 08:56:49,867 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 08:56:49,867 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 08:56:49,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 08:56:49,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 08:56:49,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 08:56:49,868 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 08:56:49,868 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 08:56:49,868 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 08:56:49,868 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 08:56:49,868 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 08:56:49,868 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 08:56:49,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 08:56:49,869 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 08:56:49,869 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 08:56:49,869 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 08:56:49,869 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 08:56:49,869 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 08:56:49,869 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 08:56:49,869 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 08:56:49,869 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 08:56:49,869 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 08:56:49,869 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 08:56:49,869 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:56:49,869 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:56:49,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:56:49,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:56:49,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 08:56:49,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 08:56:49,870 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 08:56:49,870 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 08:56:49,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:56:49,870 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 08:56:49,870 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 08:56:49,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 08:56:49,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 08:56:49,870 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 08:56:49,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 08:56:49,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 08:56:49,871 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 08:56:49,871 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_af9d84cd-a39a-41c5-8a28-7bb92fab7379/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 -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2024-12-02 08:56:50,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:56:50,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:56:50,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:56:50,108 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:56:50,108 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:56:50,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-12-02 08:56:52,686 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/data/d2fc898e5/c3f42f84286344759ab886680e7ae973/FLAG010f60757 [2024-12-02 08:56:52,938 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:56:52,938 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-12-02 08:56:52,952 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/data/d2fc898e5/c3f42f84286344759ab886680e7ae973/FLAG010f60757 [2024-12-02 08:56:53,267 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/data/d2fc898e5/c3f42f84286344759ab886680e7ae973 [2024-12-02 08:56:53,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:56:53,271 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:56:53,272 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:56:53,272 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:56:53,275 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:56:53,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b1801f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53, skipping insertion in model container [2024-12-02 08:56:53,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,305 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:56:53,542 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:56:53,550 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:56:53,590 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:56:53,628 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:56:53,628 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53 WrapperNode [2024-12-02 08:56:53,629 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:56:53,629 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:56:53,630 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:56:53,630 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:56:53,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,646 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,665 INFO L138 Inliner]: procedures = 166, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 62 [2024-12-02 08:56:53,666 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:56:53,666 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:56:53,666 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:56:53,666 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:56:53,673 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,673 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,675 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,687 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 08:56:53,687 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,687 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,691 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,692 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,695 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,696 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,697 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,699 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:56:53,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:56:53,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:56:53,700 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:56:53,701 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53" (1/1) ... [2024-12-02 08:56:53,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:56:53,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:56:53,726 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:56:53,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:56:53,751 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-12-02 08:56:53,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-12-02 08:56:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:56:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 08:56:53,752 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:56:53,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:56:53,753 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 08:56:53,841 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:56:53,843 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:56:53,970 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 08:56:53,970 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:56:54,039 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:56:54,040 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-12-02 08:56:54,040 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:56:54 BoogieIcfgContainer [2024-12-02 08:56:54,040 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:56:54,042 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:56:54,042 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:56:54,047 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:56:54,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:56:53" (1/3) ... [2024-12-02 08:56:54,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2fc8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:56:54, skipping insertion in model container [2024-12-02 08:56:54,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:56:53" (2/3) ... [2024-12-02 08:56:54,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2fc8a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:56:54, skipping insertion in model container [2024-12-02 08:56:54,048 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:56:54" (3/3) ... [2024-12-02 08:56:54,049 INFO L128 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2024-12-02 08:56:54,065 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:56:54,067 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28_buggy_simple_loop1_vf.i that has 2 procedures, 20 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2024-12-02 08:56:54,067 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 08:56:54,123 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 08:56:54,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 26 transitions, 56 flow [2024-12-02 08:56:54,180 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-12-02 08:56:54,182 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:56:54,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 6/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-12-02 08:56:54,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 26 transitions, 56 flow [2024-12-02 08:56:54,188 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 26 transitions, 56 flow [2024-12-02 08:56:54,196 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:56:54,208 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;@22f2a4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:56:54,208 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-12-02 08:56:54,211 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:56:54,212 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:56:54,212 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:56:54,212 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:56:54,213 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:56:54,213 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:56:54,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:54,219 INFO L85 PathProgramCache]: Analyzing trace with hash 212284, now seen corresponding path program 1 times [2024-12-02 08:56:54,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:54,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282193370] [2024-12-02 08:56:54,228 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:54,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:54,339 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 08:56:54,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:54,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282193370] [2024-12-02 08:56:54,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282193370] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:54,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:54,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:56:54,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623106274] [2024-12-02 08:56:54,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:54,346 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:56:54,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:54,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:56:54,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:56:54,370 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-12-02 08:56:54,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 26 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 08:56:54,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:56:54,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-12-02 08:56:54,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:56:54,447 INFO L124 PetriNetUnfolderBase]: 22/62 cut-off events. [2024-12-02 08:56:54,447 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:56:54,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 62 events. 22/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 175 event pairs, 10 based on Foata normal form. 6/59 useless extension candidates. Maximal degree in co-relation 93. Up to 40 conditions per place. [2024-12-02 08:56:54,449 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 12 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2024-12-02 08:56:54,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 68 flow [2024-12-02 08:56:54,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:56:54,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 08:56:54,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 33 transitions. [2024-12-02 08:56:54,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-12-02 08:56:54,461 INFO L175 Difference]: Start difference. First operand has 23 places, 26 transitions, 56 flow. Second operand 2 states and 33 transitions. [2024-12-02 08:56:54,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 68 flow [2024-12-02 08:56:54,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:56:54,468 INFO L231 Difference]: Finished difference. Result has 20 places, 20 transitions, 44 flow [2024-12-02 08:56:54,470 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=20, PETRI_TRANSITIONS=20} [2024-12-02 08:56:54,473 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2024-12-02 08:56:54,473 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 20 transitions, 44 flow [2024-12-02 08:56:54,473 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 08:56:54,473 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:56:54,474 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 08:56:54,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 08:56:54,474 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:56:54,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:54,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2029284230, now seen corresponding path program 1 times [2024-12-02 08:56:54,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:54,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220089072] [2024-12-02 08:56:54,474 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:54,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:54,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:56:54,489 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:56:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:56:54,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:56:54,511 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:56:54,513 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-12-02 08:56:54,515 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-12-02 08:56:54,515 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-12-02 08:56:54,515 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-12-02 08:56:54,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 08:56:54,516 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 08:56:54,519 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:56:54,519 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 08:56:54,559 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 08:56:54,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 45 transitions, 100 flow [2024-12-02 08:56:54,576 INFO L124 PetriNetUnfolderBase]: 12/54 cut-off events. [2024-12-02 08:56:54,576 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 08:56:54,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 54 events. 12/54 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 140 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 41. Up to 3 conditions per place. [2024-12-02 08:56:54,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 45 transitions, 100 flow [2024-12-02 08:56:54,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 45 transitions, 100 flow [2024-12-02 08:56:54,580 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:56:54,580 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;@22f2a4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:56:54,581 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-12-02 08:56:54,583 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:56:54,583 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:56:54,583 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:56:54,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:56:54,583 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:56:54,584 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:56:54,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:54,584 INFO L85 PathProgramCache]: Analyzing trace with hash 256969, now seen corresponding path program 1 times [2024-12-02 08:56:54,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:54,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149601934] [2024-12-02 08:56:54,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:54,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:54,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:54,606 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 08:56:54,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:54,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149601934] [2024-12-02 08:56:54,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149601934] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:54,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:54,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:56:54,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271249210] [2024-12-02 08:56:54,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:54,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:56:54,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:54,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:56:54,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:56:54,608 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-12-02 08:56:54,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:56:54,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:56:54,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-12-02 08:56:54,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:56:54,767 INFO L124 PetriNetUnfolderBase]: 298/572 cut-off events. [2024-12-02 08:56:54,767 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-12-02 08:56:54,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 572 events. 298/572 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2701 event pairs, 160 based on Foata normal form. 77/546 useless extension candidates. Maximal degree in co-relation 345. Up to 406 conditions per place. [2024-12-02 08:56:54,774 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 21 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2024-12-02 08:56:54,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 124 flow [2024-12-02 08:56:54,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:56:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 08:56:54,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 58 transitions. [2024-12-02 08:56:54,776 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-12-02 08:56:54,776 INFO L175 Difference]: Start difference. First operand has 38 places, 45 transitions, 100 flow. Second operand 2 states and 58 transitions. [2024-12-02 08:56:54,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 124 flow [2024-12-02 08:56:54,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:56:54,778 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 82 flow [2024-12-02 08:56:54,779 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2024-12-02 08:56:54,779 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2024-12-02 08:56:54,780 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 82 flow [2024-12-02 08:56:54,780 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:56:54,780 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:56:54,780 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-12-02 08:56:54,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 08:56:54,780 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:56:54,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:54,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1243015638, now seen corresponding path program 1 times [2024-12-02 08:56:54,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:54,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369520642] [2024-12-02 08:56:54,781 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:54,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:54,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:56:54,799 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:56:54,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:56:54,814 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:56:54,814 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:56:54,815 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-12-02 08:56:54,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-12-02 08:56:54,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-12-02 08:56:54,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-12-02 08:56:54,815 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-12-02 08:56:54,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 08:56:54,816 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 08:56:54,816 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:56:54,817 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 08:56:54,857 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 08:56:54,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 64 transitions, 146 flow [2024-12-02 08:56:54,866 INFO L124 PetriNetUnfolderBase]: 18/78 cut-off events. [2024-12-02 08:56:54,866 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-12-02 08:56:54,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 18/78 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 227 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2024-12-02 08:56:54,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 64 transitions, 146 flow [2024-12-02 08:56:54,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 64 transitions, 146 flow [2024-12-02 08:56:54,869 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:56:54,869 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;@22f2a4e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:56:54,869 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-12-02 08:56:54,870 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:56:54,870 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:56:54,870 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:56:54,871 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:56:54,871 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:56:54,871 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-12-02 08:56:54,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:54,871 INFO L85 PathProgramCache]: Analyzing trace with hash 320521, now seen corresponding path program 1 times [2024-12-02 08:56:54,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:54,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395954042] [2024-12-02 08:56:54,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:54,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:56:54,888 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 08:56:54,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 08:56:54,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395954042] [2024-12-02 08:56:54,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395954042] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:56:54,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:56:54,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:56:54,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157567046] [2024-12-02 08:56:54,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:56:54,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:56:54,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 08:56:54,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:56:54,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:56:54,890 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-12-02 08:56:54,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 146 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 08:56:54,890 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:56:54,890 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-12-02 08:56:54,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:56:55,309 INFO L124 PetriNetUnfolderBase]: 2818/4503 cut-off events. [2024-12-02 08:56:55,309 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2024-12-02 08:56:55,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8137 conditions, 4503 events. 2818/4503 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 26072 event pairs, 1600 based on Foata normal form. 901/4521 useless extension candidates. Maximal degree in co-relation 1004. Up to 3466 conditions per place. [2024-12-02 08:56:55,336 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 30 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2024-12-02 08:56:55,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 182 flow [2024-12-02 08:56:55,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:56:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 08:56:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 83 transitions. [2024-12-02 08:56:55,338 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2024-12-02 08:56:55,338 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 146 flow. Second operand 2 states and 83 transitions. [2024-12-02 08:56:55,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 182 flow [2024-12-02 08:56:55,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 180 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-12-02 08:56:55,340 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 120 flow [2024-12-02 08:56:55,340 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2024-12-02 08:56:55,341 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2024-12-02 08:56:55,341 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 120 flow [2024-12-02 08:56:55,342 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 08:56:55,342 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:56:55,342 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:56:55,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 08:56:55,342 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-12-02 08:56:55,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:56:55,343 INFO L85 PathProgramCache]: Analyzing trace with hash -664150958, now seen corresponding path program 1 times [2024-12-02 08:56:55,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 08:56:55,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495234996] [2024-12-02 08:56:55,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:56:55,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 08:56:55,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:56:55,376 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:56:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:56:55,398 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-12-02 08:56:55,398 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:56:55,399 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-12-02 08:56:55,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-12-02 08:56:55,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-12-02 08:56:55,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-12-02 08:56:55,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-12-02 08:56:55,399 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-12-02 08:56:55,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 08:56:55,400 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 08:56:55,422 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2024-12-02 08:56:55,423 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 08:56:55,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:56:55 BasicIcfg [2024-12-02 08:56:55,431 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 08:56:55,431 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 08:56:55,431 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 08:56:55,432 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 08:56:55,432 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:56:54" (3/4) ... [2024-12-02 08:56:55,439 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 08:56:55,440 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 08:56:55,441 INFO L158 Benchmark]: Toolchain (without parser) took 2170.13ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 115.8MB in the beginning and 297.1MB in the end (delta: -181.3MB). Peak memory consumption was 86.4MB. Max. memory is 16.1GB. [2024-12-02 08:56:55,441 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:56:55,442 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.33ms. Allocated memory is still 142.6MB. Free memory was 115.8MB in the beginning and 96.6MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 08:56:55,442 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.19ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 94.8MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 08:56:55,442 INFO L158 Benchmark]: Boogie Preprocessor took 33.15ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 93.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:56:55,442 INFO L158 Benchmark]: RCFGBuilder took 340.30ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 75.8MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 08:56:55,443 INFO L158 Benchmark]: TraceAbstraction took 1388.68ms. Allocated memory is still 142.6MB. Free memory was 75.2MB in the beginning and 35.6MB in the end (delta: 39.7MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. [2024-12-02 08:56:55,443 INFO L158 Benchmark]: Witness Printer took 8.45ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 35.6MB in the beginning and 297.1MB in the end (delta: -261.5MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. [2024-12-02 08:56:55,445 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 142.6MB. Free memory is still 84.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 357.33ms. Allocated memory is still 142.6MB. Free memory was 115.8MB in the beginning and 96.6MB in the end (delta: 19.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.19ms. Allocated memory is still 142.6MB. Free memory was 96.6MB in the beginning and 94.8MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.15ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 93.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 340.30ms. Allocated memory is still 142.6MB. Free memory was 93.4MB in the beginning and 75.8MB in the end (delta: 17.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1388.68ms. Allocated memory is still 142.6MB. Free memory was 75.2MB in the beginning and 35.6MB in the end (delta: 39.7MB). Peak memory consumption was 34.9MB. Max. memory is 16.1GB. * Witness Printer took 8.45ms. Allocated memory was 142.6MB in the beginning and 327.2MB in the end (delta: 184.5MB). Free memory was 35.6MB in the beginning and 297.1MB in the end (delta: -261.5MB). Peak memory consumption was 9.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L700] 0 pthread_t t; [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [t=-1] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/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 -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2024-12-02 08:56:57,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 08:56:57,734 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 08:56:57,736 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 08:56:57,737 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 08:56:57,738 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 08:56:57,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-12-02 08:57:00,415 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/data/ee73f6576/8ef8b145518143f4a50f38cd5d0f7c82/FLAG6614b95a9 [2024-12-02 08:57:00,627 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 08:57:00,628 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-12-02 08:57:00,638 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/data/ee73f6576/8ef8b145518143f4a50f38cd5d0f7c82/FLAG6614b95a9 [2024-12-02 08:57:00,959 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/data/ee73f6576/8ef8b145518143f4a50f38cd5d0f7c82 [2024-12-02 08:57:00,961 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 08:57:00,962 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 08:57:00,963 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 08:57:00,963 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 08:57:00,966 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 08:57:00,967 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:57:00" (1/1) ... [2024-12-02 08:57:00,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39f88228 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:00, skipping insertion in model container [2024-12-02 08:57:00,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 08:57:00" (1/1) ... [2024-12-02 08:57:00,992 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 08:57:01,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:57:01,220 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 08:57:01,262 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 08:57:01,297 INFO L204 MainTranslator]: Completed translation [2024-12-02 08:57:01,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01 WrapperNode [2024-12-02 08:57:01,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 08:57:01,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 08:57:01,299 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 08:57:01,299 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 08:57:01,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01" (1/1) ... [2024-12-02 08:57:01,317 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01" (1/1) ... [2024-12-02 08:57:01,333 INFO L138 Inliner]: procedures = 167, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 63 [2024-12-02 08:57:01,333 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 08:57:01,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 08:57:01,334 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 08:57:01,334 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 08:57:01,343 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01" (1/1) ... [2024-12-02 08:57:01,343 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01" (1/1) ... [2024-12-02 08:57:01,345 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01" (1/1) ... [2024-12-02 08:57:01,356 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 08:57:01,356 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01" (1/1) ... [2024-12-02 08:57:01,356 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01" (1/1) ... [2024-12-02 08:57:01,361 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01" (1/1) ... [2024-12-02 08:57:01,362 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01" (1/1) ... [2024-12-02 08:57:01,366 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01" (1/1) ... [2024-12-02 08:57:01,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01" (1/1) ... [2024-12-02 08:57:01,368 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01" (1/1) ... [2024-12-02 08:57:01,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 08:57:01,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 08:57:01,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 08:57:01,371 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 08:57:01,372 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01" (1/1) ... [2024-12-02 08:57:01,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 08:57:01,389 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:57:01,401 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 08:57:01,403 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 08:57:01,421 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-12-02 08:57:01,421 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-12-02 08:57:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 08:57:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 08:57:01,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 08:57:01,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 08:57:01,422 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 08:57:01,536 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 08:57:01,538 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 08:57:01,659 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 08:57:01,659 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 08:57:01,739 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 08:57:01,739 INFO L312 CfgBuilder]: Removed 5 assume(true) statements. [2024-12-02 08:57:01,740 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:57:01 BoogieIcfgContainer [2024-12-02 08:57:01,740 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 08:57:01,742 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 08:57:01,742 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 08:57:01,746 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 08:57:01,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 08:57:00" (1/3) ... [2024-12-02 08:57:01,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61512635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:57:01, skipping insertion in model container [2024-12-02 08:57:01,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 08:57:01" (2/3) ... [2024-12-02 08:57:01,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61512635 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 08:57:01, skipping insertion in model container [2024-12-02 08:57:01,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:57:01" (3/3) ... [2024-12-02 08:57:01,749 INFO L128 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2024-12-02 08:57:01,760 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 08:57:01,762 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28_buggy_simple_loop1_vf.i that has 2 procedures, 20 locations, 1 initial locations, 4 loop locations, and 2 error locations. [2024-12-02 08:57:01,762 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 08:57:01,807 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 08:57:01,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 26 transitions, 56 flow [2024-12-02 08:57:01,858 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-12-02 08:57:01,860 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:57:01,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 30 events. 6/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 65 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-12-02 08:57:01,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 26 transitions, 56 flow [2024-12-02 08:57:01,864 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 26 transitions, 56 flow [2024-12-02 08:57:01,870 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:57:01,880 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;@4b327ed3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:57:01,880 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-12-02 08:57:01,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:57:01,883 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:57:01,883 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:57:01,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:57:01,884 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:57:01,885 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:57:01,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:01,890 INFO L85 PathProgramCache]: Analyzing trace with hash 214270, now seen corresponding path program 1 times [2024-12-02 08:57:01,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:57:01,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [734241125] [2024-12-02 08:57:01,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:01,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:01,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:57:01,900 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:57:01,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 08:57:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:01,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:57:01,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:57:01,985 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 08:57:01,986 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:57:01,986 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:57:01,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734241125] [2024-12-02 08:57:01,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734241125] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:01,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:57:01,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:57:01,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044754676] [2024-12-02 08:57:01,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:01,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:57:02,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:57:02,024 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:57:02,024 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:57:02,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-12-02 08:57:02,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 26 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 08:57:02,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:57:02,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-12-02 08:57:02,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:57:02,083 INFO L124 PetriNetUnfolderBase]: 22/62 cut-off events. [2024-12-02 08:57:02,083 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:57:02,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 62 events. 22/62 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 175 event pairs, 10 based on Foata normal form. 6/59 useless extension candidates. Maximal degree in co-relation 93. Up to 40 conditions per place. [2024-12-02 08:57:02,085 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 12 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2024-12-02 08:57:02,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 68 flow [2024-12-02 08:57:02,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:57:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 08:57:02,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 33 transitions. [2024-12-02 08:57:02,097 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-12-02 08:57:02,099 INFO L175 Difference]: Start difference. First operand has 23 places, 26 transitions, 56 flow. Second operand 2 states and 33 transitions. [2024-12-02 08:57:02,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 68 flow [2024-12-02 08:57:02,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:57:02,104 INFO L231 Difference]: Finished difference. Result has 20 places, 20 transitions, 44 flow [2024-12-02 08:57:02,106 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=26, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=44, PETRI_PLACES=20, PETRI_TRANSITIONS=20} [2024-12-02 08:57:02,109 INFO L279 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2024-12-02 08:57:02,110 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 20 transitions, 44 flow [2024-12-02 08:57:02,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 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 08:57:02,110 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:57:02,110 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-12-02 08:57:02,119 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 08:57:02,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:02,311 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 08:57:02,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:02,311 INFO L85 PathProgramCache]: Analyzing trace with hash 2088451142, now seen corresponding path program 1 times [2024-12-02 08:57:02,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:57:02,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024184164] [2024-12-02 08:57:02,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:02,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:02,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:57:02,314 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:57:02,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 08:57:02,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:57:02,363 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:57:02,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:57:02,389 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-12-02 08:57:02,389 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:57:02,390 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-12-02 08:57:02,391 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-12-02 08:57:02,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-12-02 08:57:02,392 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-12-02 08:57:02,399 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 08:57:02,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:02,593 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 08:57:02,595 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:57:02,595 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-12-02 08:57:02,628 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 08:57:02,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 45 transitions, 100 flow [2024-12-02 08:57:02,642 INFO L124 PetriNetUnfolderBase]: 12/54 cut-off events. [2024-12-02 08:57:02,643 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 08:57:02,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62 conditions, 54 events. 12/54 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 140 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 41. Up to 3 conditions per place. [2024-12-02 08:57:02,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 45 transitions, 100 flow [2024-12-02 08:57:02,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 45 transitions, 100 flow [2024-12-02 08:57:02,646 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:57:02,647 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;@4b327ed3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:57:02,647 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-12-02 08:57:02,649 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:57:02,649 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:57:02,649 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:57:02,649 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:57:02,650 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:57:02,650 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:57:02,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:02,650 INFO L85 PathProgramCache]: Analyzing trace with hash 258955, now seen corresponding path program 1 times [2024-12-02 08:57:02,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:57:02,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150425544] [2024-12-02 08:57:02,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:02,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:02,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:57:02,654 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:57:02,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 08:57:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:02,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:57:02,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:57:02,708 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 08:57:02,708 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:57:02,708 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:57:02,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150425544] [2024-12-02 08:57:02,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150425544] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:02,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:57:02,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:57:02,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717328180] [2024-12-02 08:57:02,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:02,709 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:57:02,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:57:02,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:57:02,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:57:02,710 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-12-02 08:57:02,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 45 transitions, 100 flow. Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:57:02,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:57:02,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-12-02 08:57:02,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:57:02,871 INFO L124 PetriNetUnfolderBase]: 298/572 cut-off events. [2024-12-02 08:57:02,871 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-12-02 08:57:02,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1001 conditions, 572 events. 298/572 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2701 event pairs, 160 based on Foata normal form. 77/546 useless extension candidates. Maximal degree in co-relation 345. Up to 406 conditions per place. [2024-12-02 08:57:02,878 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 21 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2024-12-02 08:57:02,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 124 flow [2024-12-02 08:57:02,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:57:02,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 08:57:02,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 58 transitions. [2024-12-02 08:57:02,880 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-12-02 08:57:02,881 INFO L175 Difference]: Start difference. First operand has 38 places, 45 transitions, 100 flow. Second operand 2 states and 58 transitions. [2024-12-02 08:57:02,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 124 flow [2024-12-02 08:57:02,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 08:57:02,883 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 82 flow [2024-12-02 08:57:02,883 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=45, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=34, PETRI_TRANSITIONS=36} [2024-12-02 08:57:02,884 INFO L279 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2024-12-02 08:57:02,885 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 82 flow [2024-12-02 08:57:02,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 08:57:02,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:57:02,885 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-12-02 08:57:02,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 08:57:03,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:03,086 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-12-02 08:57:03,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:03,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1347065640, now seen corresponding path program 1 times [2024-12-02 08:57:03,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:57:03,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317865499] [2024-12-02 08:57:03,087 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:03,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:03,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:57:03,089 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:57:03,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 08:57:03,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:57:03,147 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:57:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:57:03,177 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-12-02 08:57:03,178 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:57:03,179 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-12-02 08:57:03,179 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-12-02 08:57:03,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-12-02 08:57:03,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-12-02 08:57:03,180 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-12-02 08:57:03,190 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 08:57:03,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:03,381 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 08:57:03,381 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-12-02 08:57:03,381 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-12-02 08:57:03,428 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 08:57:03,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 64 transitions, 146 flow [2024-12-02 08:57:03,439 INFO L124 PetriNetUnfolderBase]: 18/78 cut-off events. [2024-12-02 08:57:03,439 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-12-02 08:57:03,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 78 events. 18/78 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 227 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 61. Up to 4 conditions per place. [2024-12-02 08:57:03,440 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 64 transitions, 146 flow [2024-12-02 08:57:03,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 64 transitions, 146 flow [2024-12-02 08:57:03,442 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 08:57:03,443 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;@4b327ed3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 08:57:03,443 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-12-02 08:57:03,444 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 08:57:03,444 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-12-02 08:57:03,444 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 08:57:03,444 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:57:03,444 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-12-02 08:57:03,445 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-12-02 08:57:03,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:03,445 INFO L85 PathProgramCache]: Analyzing trace with hash 322507, now seen corresponding path program 1 times [2024-12-02 08:57:03,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:57:03,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716967567] [2024-12-02 08:57:03,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:03,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:03,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:57:03,448 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:57:03,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 08:57:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 08:57:03,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 08:57:03,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 08:57:03,506 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 08:57:03,506 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 08:57:03,506 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 08:57:03,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716967567] [2024-12-02 08:57:03,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716967567] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 08:57:03,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 08:57:03,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 08:57:03,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137291194] [2024-12-02 08:57:03,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 08:57:03,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 08:57:03,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 08:57:03,507 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 08:57:03,507 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 08:57:03,507 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-12-02 08:57:03,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 64 transitions, 146 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 08:57:03,507 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 08:57:03,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-12-02 08:57:03,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 08:57:04,086 INFO L124 PetriNetUnfolderBase]: 2818/4503 cut-off events. [2024-12-02 08:57:04,086 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2024-12-02 08:57:04,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8137 conditions, 4503 events. 2818/4503 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 26072 event pairs, 1600 based on Foata normal form. 901/4521 useless extension candidates. Maximal degree in co-relation 1004. Up to 3466 conditions per place. [2024-12-02 08:57:04,144 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 30 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2024-12-02 08:57:04,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 182 flow [2024-12-02 08:57:04,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 08:57:04,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 08:57:04,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 83 transitions. [2024-12-02 08:57:04,146 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2024-12-02 08:57:04,146 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 146 flow. Second operand 2 states and 83 transitions. [2024-12-02 08:57:04,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 182 flow [2024-12-02 08:57:04,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 180 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-12-02 08:57:04,149 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 120 flow [2024-12-02 08:57:04,149 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=64, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=120, PETRI_PLACES=48, PETRI_TRANSITIONS=52} [2024-12-02 08:57:04,150 INFO L279 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2024-12-02 08:57:04,150 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 120 flow [2024-12-02 08:57:04,150 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 08:57:04,150 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 08:57:04,150 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 08:57:04,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-12-02 08:57:04,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:04,351 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-12-02 08:57:04,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 08:57:04,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1040735060, now seen corresponding path program 1 times [2024-12-02 08:57:04,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 08:57:04,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1416268446] [2024-12-02 08:57:04,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 08:57:04,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:04,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 08:57:04,354 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 08:57:04,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 08:57:04,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:57:04,416 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-12-02 08:57:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-12-02 08:57:04,443 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-12-02 08:57:04,443 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-12-02 08:57:04,444 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-12-02 08:57:04,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-12-02 08:57:04,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-12-02 08:57:04,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-12-02 08:57:04,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-12-02 08:57:04,444 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-12-02 08:57:04,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 08:57:04,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_af9d84cd-a39a-41c5-8a28-7bb92fab7379/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 08:57:04,644 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2024-12-02 08:57:04,668 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2024-12-02 08:57:04,669 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 08:57:04,676 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 08:57:04 BasicIcfg [2024-12-02 08:57:04,676 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 08:57:04,676 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 08:57:04,676 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 08:57:04,677 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 08:57:04,677 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 08:57:01" (3/4) ... [2024-12-02 08:57:04,679 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-12-02 08:57:04,680 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 08:57:04,681 INFO L158 Benchmark]: Toolchain (without parser) took 3718.36ms. Allocated memory was 92.3MB in the beginning and 151.0MB in the end (delta: 58.7MB). Free memory was 68.2MB in the beginning and 90.7MB in the end (delta: -22.5MB). Peak memory consumption was 35.1MB. Max. memory is 16.1GB. [2024-12-02 08:57:04,681 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:57:04,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 335.62ms. Allocated memory is still 92.3MB. Free memory was 68.0MB in the beginning and 48.1MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 08:57:04,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.42ms. Allocated memory is still 92.3MB. Free memory was 48.1MB in the beginning and 46.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:57:04,682 INFO L158 Benchmark]: Boogie Preprocessor took 36.18ms. Allocated memory is still 92.3MB. Free memory was 46.4MB in the beginning and 44.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:57:04,682 INFO L158 Benchmark]: RCFGBuilder took 369.21ms. Allocated memory is still 92.3MB. Free memory was 44.7MB in the beginning and 55.0MB in the end (delta: -10.3MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. [2024-12-02 08:57:04,682 INFO L158 Benchmark]: TraceAbstraction took 2933.64ms. Allocated memory was 92.3MB in the beginning and 151.0MB in the end (delta: 58.7MB). Free memory was 54.3MB in the beginning and 90.7MB in the end (delta: -36.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-12-02 08:57:04,683 INFO L158 Benchmark]: Witness Printer took 3.40ms. Allocated memory is still 151.0MB. Free memory was 90.7MB in the beginning and 90.7MB in the end (delta: 36.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 08:57:04,684 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 83.9MB. Free memory is still 48.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 335.62ms. Allocated memory is still 92.3MB. Free memory was 68.0MB in the beginning and 48.1MB in the end (delta: 19.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.42ms. Allocated memory is still 92.3MB. Free memory was 48.1MB in the beginning and 46.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.18ms. Allocated memory is still 92.3MB. Free memory was 46.4MB in the beginning and 44.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 369.21ms. Allocated memory is still 92.3MB. Free memory was 44.7MB in the beginning and 55.0MB in the end (delta: -10.3MB). Peak memory consumption was 12.0MB. Max. memory is 16.1GB. * TraceAbstraction took 2933.64ms. Allocated memory was 92.3MB in the beginning and 151.0MB in the end (delta: 58.7MB). Free memory was 54.3MB in the beginning and 90.7MB in the end (delta: -36.4MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 3.40ms. Allocated memory is still 151.0MB. Free memory was 90.7MB in the beginning and 90.7MB in the end (delta: 36.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 12. Possible FailurePath: [L700] 0 pthread_t t; [L703] FCALL, FORK 0 pthread_create(&t, 0, thr1, 0) VAL [t=0] [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L686] 1 unsigned int x=__VERIFIER_nondet_uint(), y=__VERIFIER_nondet_uint(), z=__VERIFIER_nondet_uint(); [L687] 1 int i, j=1, k=1; [L688] 1 i=0 VAL [\old(arg)={0:0}, arg={0:0}, i=0, j=1, k=1] [L688] COND FALSE 1 !(i