./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 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/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_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU --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 0.2.5-dev-4fc63b2 [2024-10-31 22:10:26,359 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:10:26,469 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:10:26,475 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:10:26,476 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:10:26,521 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:10:26,522 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:10:26,522 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:10:26,523 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:10:26,524 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:10:26,524 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:10:26,525 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:10:26,527 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:10:26,530 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:10:26,531 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:10:26,531 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:10:26,532 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:10:26,532 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:10:26,532 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:10:26,533 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:10:26,533 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:10:26,535 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:10:26,536 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:10:26,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:10:26,536 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:10:26,537 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:10:26,537 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:10:26,537 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:10:26,538 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:10:26,538 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:10:26,540 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:10:26,541 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:10:26,541 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:10:26,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:26,542 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:10:26,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:10:26,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:10:26,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:10:26,544 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:10:26,544 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:10:26,544 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:10:26,545 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:10:26,545 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f7757e6e73d857d492b029f13f86cb5d550622238e5a2b483c58ab6fc3ffdeb1 [2024-10-31 22:10:26,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:10:26,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:10:26,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:10:26,921 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:10:26,922 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:10:26,923 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i Unable to find full path for "g++" [2024-10-31 22:10:29,143 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:10:29,423 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:10:29,423 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-10-31 22:10:29,449 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/data/bb43ba495/f604fc96427a44d6a949d8f12f50738e/FLAGace6707f7 [2024-10-31 22:10:29,466 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/data/bb43ba495/f604fc96427a44d6a949d8f12f50738e [2024-10-31 22:10:29,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:10:29,471 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:10:29,473 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:29,473 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:10:29,482 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:10:29,483 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:29" (1/1) ... [2024-10-31 22:10:29,484 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c11323a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:29, skipping insertion in model container [2024-10-31 22:10:29,485 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:29" (1/1) ... [2024-10-31 22:10:29,550 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:10:29,989 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:30,000 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:10:30,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:30,101 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:10:30,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30 WrapperNode [2024-10-31 22:10:30,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:30,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:30,104 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:10:30,105 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:10:30,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30" (1/1) ... [2024-10-31 22:10:30,133 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30" (1/1) ... [2024-10-31 22:10:30,163 INFO L138 Inliner]: procedures = 166, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 66 [2024-10-31 22:10:30,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:30,167 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:10:30,168 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:10:30,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:10:30,180 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30" (1/1) ... [2024-10-31 22:10:30,181 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30" (1/1) ... [2024-10-31 22:10:30,184 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30" (1/1) ... [2024-10-31 22:10:30,203 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]. [2024-10-31 22:10:30,204 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30" (1/1) ... [2024-10-31 22:10:30,204 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30" (1/1) ... [2024-10-31 22:10:30,209 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30" (1/1) ... [2024-10-31 22:10:30,213 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30" (1/1) ... [2024-10-31 22:10:30,215 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30" (1/1) ... [2024-10-31 22:10:30,216 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30" (1/1) ... [2024-10-31 22:10:30,218 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:10:30,219 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:10:30,220 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:10:30,220 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:10:30,221 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30" (1/1) ... [2024-10-31 22:10:30,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:30,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:30,265 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:30,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:10:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-31 22:10:30,313 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-31 22:10:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:10:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:10:30,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:10:30,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:10:30,320 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:10:30,529 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:10:30,532 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:30,807 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:10:30,807 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:31,034 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:31,034 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-31 22:10:31,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:31 BoogieIcfgContainer [2024-10-31 22:10:31,035 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:31,039 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:31,039 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:31,046 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:31,047 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:10:29" (1/3) ... [2024-10-31 22:10:31,048 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2b39e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:31, skipping insertion in model container [2024-10-31 22:10:31,049 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:30" (2/3) ... [2024-10-31 22:10:31,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f2b39e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:31, skipping insertion in model container [2024-10-31 22:10:31,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:31" (3/3) ... [2024-10-31 22:10:31,053 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2024-10-31 22:10:31,079 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:31,079 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:10:31,079 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:10:31,167 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:10:31,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 26 transitions, 56 flow [2024-10-31 22:10:31,236 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-10-31 22:10:31,237 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:31,240 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. [2024-10-31 22:10:31,240 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 26 transitions, 56 flow [2024-10-31 22:10:31,244 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 26 transitions, 56 flow [2024-10-31 22:10:31,260 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:31,275 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;@65514c4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:31,275 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 22:10:31,282 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:31,282 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:10:31,283 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:31,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:31,284 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:10:31,285 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)] === [2024-10-31 22:10:31,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:31,291 INFO L85 PathProgramCache]: Analyzing trace with hash 210359, now seen corresponding path program 1 times [2024-10-31 22:10:31,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:31,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680302028] [2024-10-31 22:10:31,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:31,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:31,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:31,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:31,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680302028] [2024-10-31 22:10:31,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680302028] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:31,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:31,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:31,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412323973] [2024-10-31 22:10:31,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:31,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:10:31,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:31,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:10:31,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:10:31,577 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-10-31 22:10:31,580 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) [2024-10-31 22:10:31,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:31,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-10-31 22:10:31,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:31,671 INFO L124 PetriNetUnfolderBase]: 22/61 cut-off events. [2024-10-31 22:10:31,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:31,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 61 events. 22/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 161 event pairs, 10 based on Foata normal form. 6/58 useless extension candidates. Maximal degree in co-relation 93. Up to 40 conditions per place. [2024-10-31 22:10:31,673 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 12 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2024-10-31 22:10:31,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 68 flow [2024-10-31 22:10:31,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:10:31,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:10:31,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 33 transitions. [2024-10-31 22:10:31,688 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-10-31 22:10:31,690 INFO L175 Difference]: Start difference. First operand has 23 places, 26 transitions, 56 flow. Second operand 2 states and 33 transitions. [2024-10-31 22:10:31,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 68 flow [2024-10-31 22:10:31,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:10:31,697 INFO L231 Difference]: Finished difference. Result has 20 places, 20 transitions, 44 flow [2024-10-31 22:10:31,700 INFO L260 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} [2024-10-31 22:10:31,705 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2024-10-31 22:10:31,707 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 20 transitions, 44 flow [2024-10-31 22:10:31,708 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) [2024-10-31 22:10:31,709 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:31,713 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:10:31,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:10:31,714 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)] === [2024-10-31 22:10:31,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:31,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1972017279, now seen corresponding path program 1 times [2024-10-31 22:10:31,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:31,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227785425] [2024-10-31 22:10:31,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:31,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:31,780 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:31,832 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:31,832 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:10:31,835 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-10-31 22:10:31,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-10-31 22:10:31,839 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-10-31 22:10:31,840 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-10-31 22:10:31,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:10:31,841 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:10:31,845 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:10:31,845 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:10:31,930 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:10:31,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 45 transitions, 100 flow [2024-10-31 22:10:31,955 INFO L124 PetriNetUnfolderBase]: 12/54 cut-off events. [2024-10-31 22:10:31,955 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:10:31,956 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 143 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. [2024-10-31 22:10:31,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 45 transitions, 100 flow [2024-10-31 22:10:31,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 45 transitions, 100 flow [2024-10-31 22:10:31,960 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:31,962 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;@65514c4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:31,962 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-31 22:10:31,964 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:31,965 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:10:31,965 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:31,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:31,965 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:10:31,966 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)] === [2024-10-31 22:10:31,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:31,966 INFO L85 PathProgramCache]: Analyzing trace with hash 255044, now seen corresponding path program 1 times [2024-10-31 22:10:31,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:31,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589785213] [2024-10-31 22:10:31,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:31,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:31,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:31,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589785213] [2024-10-31 22:10:31,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589785213] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:31,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:31,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:31,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985219328] [2024-10-31 22:10:31,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:31,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:10:32,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:32,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:10:32,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:10:32,001 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-10-31 22:10:32,002 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) [2024-10-31 22:10:32,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:32,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-10-31 22:10:32,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:32,171 INFO L124 PetriNetUnfolderBase]: 298/572 cut-off events. [2024-10-31 22:10:32,172 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-31 22:10:32,176 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 2710 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. [2024-10-31 22:10:32,182 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 21 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2024-10-31 22:10:32,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 124 flow [2024-10-31 22:10:32,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:10:32,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:10:32,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 58 transitions. [2024-10-31 22:10:32,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-10-31 22:10:32,186 INFO L175 Difference]: Start difference. First operand has 38 places, 45 transitions, 100 flow. Second operand 2 states and 58 transitions. [2024-10-31 22:10:32,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 124 flow [2024-10-31 22:10:32,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:10:32,191 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 82 flow [2024-10-31 22:10:32,192 INFO L260 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} [2024-10-31 22:10:32,193 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2024-10-31 22:10:32,193 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 82 flow [2024-10-31 22:10:32,194 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) [2024-10-31 22:10:32,194 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:32,195 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-31 22:10:32,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:10:32,195 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)] === [2024-10-31 22:10:32,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:32,196 INFO L85 PathProgramCache]: Analyzing trace with hash 305286260, now seen corresponding path program 1 times [2024-10-31 22:10:32,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:32,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194891083] [2024-10-31 22:10:32,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:32,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:32,224 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:32,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:32,251 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:10:32,255 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-31 22:10:32,255 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-10-31 22:10:32,255 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-10-31 22:10:32,256 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-10-31 22:10:32,256 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-10-31 22:10:32,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:10:32,256 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:10:32,257 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:10:32,257 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:10:32,323 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:10:32,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 64 transitions, 146 flow [2024-10-31 22:10:32,342 INFO L124 PetriNetUnfolderBase]: 18/78 cut-off events. [2024-10-31 22:10:32,342 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:10:32,345 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 8. Compared 232 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. [2024-10-31 22:10:32,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 64 transitions, 146 flow [2024-10-31 22:10:32,347 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 64 transitions, 146 flow [2024-10-31 22:10:32,349 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:32,351 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;@65514c4d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:32,352 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-31 22:10:32,353 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:32,353 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:10:32,354 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:32,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:32,354 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:10:32,354 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)] === [2024-10-31 22:10:32,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:32,355 INFO L85 PathProgramCache]: Analyzing trace with hash 318596, now seen corresponding path program 1 times [2024-10-31 22:10:32,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:32,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533517747] [2024-10-31 22:10:32,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:32,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:32,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:10:32,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533517747] [2024-10-31 22:10:32,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533517747] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:32,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:32,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:32,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456759084] [2024-10-31 22:10:32,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:32,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:10:32,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:10:32,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:10:32,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:10:32,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-10-31 22:10:32,399 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) [2024-10-31 22:10:32,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:32,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-10-31 22:10:32,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:33,173 INFO L124 PetriNetUnfolderBase]: 2818/4503 cut-off events. [2024-10-31 22:10:33,174 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2024-10-31 22:10:33,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8137 conditions, 4503 events. 2818/4503 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 26109 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. [2024-10-31 22:10:33,211 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 30 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2024-10-31 22:10:33,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 182 flow [2024-10-31 22:10:33,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:10:33,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:10:33,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 83 transitions. [2024-10-31 22:10:33,214 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2024-10-31 22:10:33,214 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 146 flow. Second operand 2 states and 83 transitions. [2024-10-31 22:10:33,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 182 flow [2024-10-31 22:10:33,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 180 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-31 22:10:33,219 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 120 flow [2024-10-31 22:10:33,220 INFO L260 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} [2024-10-31 22:10:33,221 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2024-10-31 22:10:33,222 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 120 flow [2024-10-31 22:10:33,222 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) [2024-10-31 22:10:33,222 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:33,222 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:33,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:10:33,223 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:10:33,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:33,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1344209328, now seen corresponding path program 1 times [2024-10-31 22:10:33,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:10:33,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963853281] [2024-10-31 22:10:33,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:33,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:10:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:33,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:33,331 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-31 22:10:33,336 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:10:33,336 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-10-31 22:10:33,336 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-10-31 22:10:33,337 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-10-31 22:10:33,337 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-10-31 22:10:33,337 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-10-31 22:10:33,337 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-10-31 22:10:33,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:10:33,338 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:10:33,376 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2024-10-31 22:10:33,376 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:10:33,390 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:10:33 BasicIcfg [2024-10-31 22:10:33,391 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:10:33,391 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:10:33,393 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:10:33,393 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:10:33,394 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:31" (3/4) ... [2024-10-31 22:10:33,396 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-10-31 22:10:33,398 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:10:33,400 INFO L158 Benchmark]: Toolchain (without parser) took 3929.34ms. Allocated memory was 125.8MB in the beginning and 169.9MB in the end (delta: 44.0MB). Free memory was 86.4MB in the beginning and 86.6MB in the end (delta: -239.5kB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2024-10-31 22:10:33,401 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:10:33,401 INFO L158 Benchmark]: CACSL2BoogieTranslator took 630.11ms. Allocated memory is still 125.8MB. Free memory was 86.0MB in the beginning and 64.4MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2024-10-31 22:10:33,401 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.40ms. Allocated memory is still 125.8MB. Free memory was 64.4MB in the beginning and 62.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:10:33,402 INFO L158 Benchmark]: Boogie Preprocessor took 51.16ms. Allocated memory is still 125.8MB. Free memory was 62.3MB in the beginning and 60.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:10:33,402 INFO L158 Benchmark]: RCFGBuilder took 815.97ms. Allocated memory was 125.8MB in the beginning and 169.9MB in the end (delta: 44.0MB). Free memory was 60.6MB in the beginning and 137.3MB in the end (delta: -76.7MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2024-10-31 22:10:33,405 INFO L158 Benchmark]: TraceAbstraction took 2352.01ms. Allocated memory is still 169.9MB. Free memory was 136.1MB in the beginning and 86.6MB in the end (delta: 49.5MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2024-10-31 22:10:33,406 INFO L158 Benchmark]: Witness Printer took 8.37ms. Allocated memory is still 169.9MB. Free memory is still 86.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:10:33,407 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 125.8MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 630.11ms. Allocated memory is still 125.8MB. Free memory was 86.0MB in the beginning and 64.4MB in the end (delta: 21.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.40ms. Allocated memory is still 125.8MB. Free memory was 64.4MB in the beginning and 62.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.16ms. Allocated memory is still 125.8MB. Free memory was 62.3MB in the beginning and 60.6MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 815.97ms. Allocated memory was 125.8MB in the beginning and 169.9MB in the end (delta: 44.0MB). Free memory was 60.6MB in the beginning and 137.3MB in the end (delta: -76.7MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * TraceAbstraction took 2352.01ms. Allocated memory is still 169.9MB. Free memory was 136.1MB in the beginning and 86.6MB in the end (delta: 49.5MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. * Witness Printer took 8.37ms. Allocated memory is still 169.9MB. Free memory is still 86.6MB. 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; [L701] COND TRUE 0 1 [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_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU 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 [2024-10-31 22:10:36,742 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:10:36,774 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:10:36,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:10:36,780 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:10:36,781 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:10:36,782 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i Unable to find full path for "g++" [2024-10-31 22:10:38,849 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:10:39,218 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:10:39,219 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/sv-benchmarks/c/pthread-ext/28_buggy_simple_loop1_vf.i [2024-10-31 22:10:39,232 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/data/2121cbe2f/986da698e4b24d7b831f85c6c4cc3da5/FLAG0548fedbb [2024-10-31 22:10:39,457 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/data/2121cbe2f/986da698e4b24d7b831f85c6c4cc3da5 [2024-10-31 22:10:39,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:10:39,461 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:10:39,464 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:39,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:10:39,471 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:10:39,471 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:39" (1/1) ... [2024-10-31 22:10:39,472 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f941503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:39, skipping insertion in model container [2024-10-31 22:10:39,473 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:10:39" (1/1) ... [2024-10-31 22:10:39,531 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:10:40,018 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:40,034 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:10:40,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:10:40,169 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:10:40,169 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:40 WrapperNode [2024-10-31 22:10:40,170 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:10:40,171 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:40,171 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:10:40,171 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:10:40,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:40" (1/1) ... [2024-10-31 22:10:40,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:40" (1/1) ... [2024-10-31 22:10:40,231 INFO L138 Inliner]: procedures = 167, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2024-10-31 22:10:40,234 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:10:40,235 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:10:40,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:10:40,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:10:40,268 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:40" (1/1) ... [2024-10-31 22:10:40,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:40" (1/1) ... [2024-10-31 22:10:40,271 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:40" (1/1) ... [2024-10-31 22:10:40,299 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]. [2024-10-31 22:10:40,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:40" (1/1) ... [2024-10-31 22:10:40,300 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:40" (1/1) ... [2024-10-31 22:10:40,305 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:40" (1/1) ... [2024-10-31 22:10:40,328 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:40" (1/1) ... [2024-10-31 22:10:40,334 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:40" (1/1) ... [2024-10-31 22:10:40,336 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:40" (1/1) ... [2024-10-31 22:10:40,342 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:10:40,343 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:10:40,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:10:40,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:10:40,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:40" (1/1) ... [2024-10-31 22:10:40,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:10:40,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:10:40,386 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:10:40,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:10:40,422 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-31 22:10:40,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-31 22:10:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:10:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-10-31 22:10:40,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:10:40,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:10:40,425 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:10:40,627 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:10:40,629 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:10:40,852 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:10:40,852 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:10:40,997 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:10:40,997 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-31 22:10:40,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:40 BoogieIcfgContainer [2024-10-31 22:10:40,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:10:41,000 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:10:41,001 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:10:41,005 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:10:41,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:10:39" (1/3) ... [2024-10-31 22:10:41,006 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bc0b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:41, skipping insertion in model container [2024-10-31 22:10:41,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:10:40" (2/3) ... [2024-10-31 22:10:41,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34bc0b26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:10:41, skipping insertion in model container [2024-10-31 22:10:41,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:40" (3/3) ... [2024-10-31 22:10:41,010 INFO L112 eAbstractionObserver]: Analyzing ICFG 28_buggy_simple_loop1_vf.i [2024-10-31 22:10:41,031 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:10:41,031 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-10-31 22:10:41,032 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:10:41,096 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:10:41,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 23 places, 26 transitions, 56 flow [2024-10-31 22:10:41,156 INFO L124 PetriNetUnfolderBase]: 6/30 cut-off events. [2024-10-31 22:10:41,156 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:41,159 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. [2024-10-31 22:10:41,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 26 transitions, 56 flow [2024-10-31 22:10:41,163 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 26 transitions, 56 flow [2024-10-31 22:10:41,172 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:41,178 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;@d7b94d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:41,178 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 22:10:41,181 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:41,181 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:10:41,181 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:41,181 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:41,182 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:10:41,182 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)] === [2024-10-31 22:10:41,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:41,189 INFO L85 PathProgramCache]: Analyzing trace with hash 212345, now seen corresponding path program 1 times [2024-10-31 22:10:41,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:10:41,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166619077] [2024-10-31 22:10:41,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:41,215 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:10:41,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:10:41,219 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-31 22:10:41,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2024-10-31 22:10:41,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:41,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-31 22:10:41,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:41,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:41,327 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:10:41,328 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:10:41,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [166619077] [2024-10-31 22:10:41,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [166619077] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:41,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:41,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:41,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463372227] [2024-10-31 22:10:41,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:41,341 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:10:41,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:10:41,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:10:41,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:10:41,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 26 [2024-10-31 22:10:41,388 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) [2024-10-31 22:10:41,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:41,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 26 [2024-10-31 22:10:41,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:41,457 INFO L124 PetriNetUnfolderBase]: 22/61 cut-off events. [2024-10-31 22:10:41,459 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:41,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 61 events. 22/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 161 event pairs, 10 based on Foata normal form. 6/58 useless extension candidates. Maximal degree in co-relation 93. Up to 40 conditions per place. [2024-10-31 22:10:41,463 INFO L140 encePairwiseOnDemand]: 23/26 looper letters, 12 selfloop transitions, 0 changer transitions 0/20 dead transitions. [2024-10-31 22:10:41,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 20 transitions, 68 flow [2024-10-31 22:10:41,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:10:41,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:10:41,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 33 transitions. [2024-10-31 22:10:41,477 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6346153846153846 [2024-10-31 22:10:41,479 INFO L175 Difference]: Start difference. First operand has 23 places, 26 transitions, 56 flow. Second operand 2 states and 33 transitions. [2024-10-31 22:10:41,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 20 transitions, 68 flow [2024-10-31 22:10:41,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 20 transitions, 68 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:10:41,487 INFO L231 Difference]: Finished difference. Result has 20 places, 20 transitions, 44 flow [2024-10-31 22:10:41,489 INFO L260 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} [2024-10-31 22:10:41,493 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2024-10-31 22:10:41,494 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 20 transitions, 44 flow [2024-10-31 22:10:41,494 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) [2024-10-31 22:10:41,494 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:41,494 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-10-31 22:10:41,500 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2024-10-31 22:10:41,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:10:41,695 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)] === [2024-10-31 22:10:41,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:41,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2031184191, now seen corresponding path program 1 times [2024-10-31 22:10:41,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:10:41,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [79908069] [2024-10-31 22:10:41,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:41,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:10:41,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:10:41,699 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-31 22:10:41,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2024-10-31 22:10:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:41,748 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:41,785 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-10-31 22:10:41,785 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:10:41,787 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-10-31 22:10:41,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-10-31 22:10:41,790 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-10-31 22:10:41,791 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-10-31 22:10:41,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:41,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:10:41,993 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:10:41,996 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:10:41,996 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-31 22:10:42,054 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:10:42,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 45 transitions, 100 flow [2024-10-31 22:10:42,080 INFO L124 PetriNetUnfolderBase]: 12/54 cut-off events. [2024-10-31 22:10:42,081 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:10:42,083 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 143 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. [2024-10-31 22:10:42,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 45 transitions, 100 flow [2024-10-31 22:10:42,085 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 45 transitions, 100 flow [2024-10-31 22:10:42,087 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:42,089 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;@d7b94d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:42,090 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-10-31 22:10:42,093 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:42,093 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:10:42,094 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:42,094 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:42,094 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:10:42,094 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)] === [2024-10-31 22:10:42,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:42,096 INFO L85 PathProgramCache]: Analyzing trace with hash 257030, now seen corresponding path program 1 times [2024-10-31 22:10:42,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:10:42,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852218105] [2024-10-31 22:10:42,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:42,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:10:42,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:10:42,103 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-31 22:10:42,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2024-10-31 22:10:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:42,159 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-31 22:10:42,159 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:42,160 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:10:42,161 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:10:42,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852218105] [2024-10-31 22:10:42,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852218105] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:42,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:42,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:42,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986898589] [2024-10-31 22:10:42,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:42,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:10:42,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:10:42,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:10:42,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:10:42,165 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 45 [2024-10-31 22:10:42,166 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) [2024-10-31 22:10:42,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:42,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 45 [2024-10-31 22:10:42,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:42,389 INFO L124 PetriNetUnfolderBase]: 298/572 cut-off events. [2024-10-31 22:10:42,390 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-10-31 22:10:42,393 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 2710 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. [2024-10-31 22:10:42,397 INFO L140 encePairwiseOnDemand]: 40/45 looper letters, 21 selfloop transitions, 0 changer transitions 0/36 dead transitions. [2024-10-31 22:10:42,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 36 transitions, 124 flow [2024-10-31 22:10:42,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:10:42,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:10:42,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 58 transitions. [2024-10-31 22:10:42,399 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6444444444444445 [2024-10-31 22:10:42,399 INFO L175 Difference]: Start difference. First operand has 38 places, 45 transitions, 100 flow. Second operand 2 states and 58 transitions. [2024-10-31 22:10:42,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 36 transitions, 124 flow [2024-10-31 22:10:42,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:10:42,401 INFO L231 Difference]: Finished difference. Result has 34 places, 36 transitions, 82 flow [2024-10-31 22:10:42,401 INFO L260 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} [2024-10-31 22:10:42,402 INFO L277 CegarLoopForPetriNet]: 38 programPoint places, -4 predicate places. [2024-10-31 22:10:42,403 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 36 transitions, 82 flow [2024-10-31 22:10:42,403 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) [2024-10-31 22:10:42,403 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:42,403 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-10-31 22:10:42,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:10:42,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:10:42,605 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)] === [2024-10-31 22:10:42,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:42,605 INFO L85 PathProgramCache]: Analyzing trace with hash 2010172278, now seen corresponding path program 1 times [2024-10-31 22:10:42,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:10:42,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757490185] [2024-10-31 22:10:42,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:42,606 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:10:42,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:10:42,611 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-31 22:10:42,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2024-10-31 22:10:42,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:42,683 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:42,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:42,722 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-10-31 22:10:42,722 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:10:42,723 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-10-31 22:10:42,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-10-31 22:10:42,723 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-10-31 22:10:42,724 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-10-31 22:10:42,724 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-10-31 22:10:42,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2024-10-31 22:10:42,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:10:42,925 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:10:42,925 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-31 22:10:42,925 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-31 22:10:42,966 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-31 22:10:42,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 53 places, 64 transitions, 146 flow [2024-10-31 22:10:42,985 INFO L124 PetriNetUnfolderBase]: 18/78 cut-off events. [2024-10-31 22:10:42,985 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-31 22:10:42,987 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 8. Compared 232 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. [2024-10-31 22:10:42,989 INFO L82 GeneralOperation]: Start removeDead. Operand has 53 places, 64 transitions, 146 flow [2024-10-31 22:10:42,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 64 transitions, 146 flow [2024-10-31 22:10:42,992 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:10:42,994 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;@d7b94d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:10:42,995 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-31 22:10:42,997 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:10:42,997 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-10-31 22:10:42,997 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-31 22:10:42,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:42,998 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-10-31 22:10:43,001 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)] === [2024-10-31 22:10:43,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:43,002 INFO L85 PathProgramCache]: Analyzing trace with hash 320582, now seen corresponding path program 1 times [2024-10-31 22:10:43,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:10:43,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312373025] [2024-10-31 22:10:43,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:43,003 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:10:43,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:10:43,007 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-31 22:10:43,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2024-10-31 22:10:43,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:10:43,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-10-31 22:10:43,080 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:10:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:10:43,081 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:10:43,081 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2024-10-31 22:10:43,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312373025] [2024-10-31 22:10:43,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312373025] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:10:43,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:10:43,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:10:43,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071481695] [2024-10-31 22:10:43,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:10:43,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-31 22:10:43,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2024-10-31 22:10:43,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-31 22:10:43,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-31 22:10:43,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 64 [2024-10-31 22:10:43,087 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) [2024-10-31 22:10:43,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:10:43,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 64 [2024-10-31 22:10:43,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:10:43,732 INFO L124 PetriNetUnfolderBase]: 2818/4503 cut-off events. [2024-10-31 22:10:43,733 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2024-10-31 22:10:43,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8137 conditions, 4503 events. 2818/4503 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 26109 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. [2024-10-31 22:10:43,772 INFO L140 encePairwiseOnDemand]: 57/64 looper letters, 30 selfloop transitions, 0 changer transitions 0/52 dead transitions. [2024-10-31 22:10:43,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 52 transitions, 182 flow [2024-10-31 22:10:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-31 22:10:43,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-10-31 22:10:43,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 83 transitions. [2024-10-31 22:10:43,774 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2024-10-31 22:10:43,774 INFO L175 Difference]: Start difference. First operand has 53 places, 64 transitions, 146 flow. Second operand 2 states and 83 transitions. [2024-10-31 22:10:43,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 52 transitions, 182 flow [2024-10-31 22:10:43,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 52 transitions, 180 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-10-31 22:10:43,777 INFO L231 Difference]: Finished difference. Result has 48 places, 52 transitions, 120 flow [2024-10-31 22:10:43,777 INFO L260 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} [2024-10-31 22:10:43,778 INFO L277 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2024-10-31 22:10:43,778 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 52 transitions, 120 flow [2024-10-31 22:10:43,779 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) [2024-10-31 22:10:43,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:10:43,779 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:10:43,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2024-10-31 22:10:43,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:10:43,981 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-10-31 22:10:43,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:10:43,982 INFO L85 PathProgramCache]: Analyzing trace with hash 360676690, now seen corresponding path program 1 times [2024-10-31 22:10:43,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2024-10-31 22:10:43,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804924790] [2024-10-31 22:10:43,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:10:43,983 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:10:43,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat [2024-10-31 22:10:43,984 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2024-10-31 22:10:43,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2024-10-31 22:10:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:44,055 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-31 22:10:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-31 22:10:44,120 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2024-10-31 22:10:44,120 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-31 22:10:44,123 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (5 of 6 remaining) [2024-10-31 22:10:44,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-10-31 22:10:44,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-10-31 22:10:44,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2024-10-31 22:10:44,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-10-31 22:10:44,124 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-10-31 22:10:44,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2024-10-31 22:10:44,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a8b6f28f-45c1-4679-abae-31ee2acb491a/bin/uautomizer-verify-4GaUIPS5ZU/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2024-10-31 22:10:44,325 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-31 22:10:44,355 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2024-10-31 22:10:44,355 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-10-31 22:10:44,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.10 10:10:44 BasicIcfg [2024-10-31 22:10:44,372 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-31 22:10:44,373 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-31 22:10:44,373 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-31 22:10:44,373 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-31 22:10:44,374 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:10:40" (3/4) ... [2024-10-31 22:10:44,376 INFO L145 WitnessPrinter]: No result that supports witness generation found [2024-10-31 22:10:44,377 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-31 22:10:44,378 INFO L158 Benchmark]: Toolchain (without parser) took 4916.71ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 77.3MB in the beginning and 52.1MB in the end (delta: 25.2MB). Peak memory consumption was 46.5MB. Max. memory is 16.1GB. [2024-10-31 22:10:44,379 INFO L158 Benchmark]: CDTParser took 1.20ms. Allocated memory is still 67.1MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:10:44,380 INFO L158 Benchmark]: CACSL2BoogieTranslator took 706.06ms. Allocated memory is still 102.8MB. Free memory was 77.0MB in the beginning and 54.6MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-31 22:10:44,380 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.54ms. Allocated memory is still 102.8MB. Free memory was 54.6MB in the beginning and 52.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-31 22:10:44,383 INFO L158 Benchmark]: Boogie Preprocessor took 106.67ms. Allocated memory is still 102.8MB. Free memory was 52.7MB in the beginning and 79.1MB in the end (delta: -26.4MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2024-10-31 22:10:44,383 INFO L158 Benchmark]: RCFGBuilder took 655.00ms. Allocated memory is still 102.8MB. Free memory was 79.1MB in the beginning and 58.6MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2024-10-31 22:10:44,384 INFO L158 Benchmark]: TraceAbstraction took 3371.72ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 57.7MB in the beginning and 52.4MB in the end (delta: 5.3MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2024-10-31 22:10:44,384 INFO L158 Benchmark]: Witness Printer took 4.75ms. Allocated memory is still 123.7MB. Free memory was 52.4MB in the beginning and 52.1MB in the end (delta: 304.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-31 22:10:44,386 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.20ms. Allocated memory is still 67.1MB. Free memory is still 43.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 706.06ms. Allocated memory is still 102.8MB. Free memory was 77.0MB in the beginning and 54.6MB in the end (delta: 22.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.54ms. Allocated memory is still 102.8MB. Free memory was 54.6MB in the beginning and 52.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 106.67ms. Allocated memory is still 102.8MB. Free memory was 52.7MB in the beginning and 79.1MB in the end (delta: -26.4MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * RCFGBuilder took 655.00ms. Allocated memory is still 102.8MB. Free memory was 79.1MB in the beginning and 58.6MB in the end (delta: 20.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 3371.72ms. Allocated memory was 102.8MB in the beginning and 123.7MB in the end (delta: 21.0MB). Free memory was 57.7MB in the beginning and 52.4MB in the end (delta: 5.3MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. * Witness Printer took 4.75ms. Allocated memory is still 123.7MB. Free memory was 52.4MB in the beginning and 52.1MB in the end (delta: 304.2kB). 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; [L701] COND TRUE 0 1 [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