./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/clever.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/clever.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:45:54,696 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:45:54,798 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 15:45:54,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:45:54,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:45:54,863 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:45:54,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:45:54,867 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:45:54,867 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:45:54,867 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:45:54,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:45:54,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:45:54,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:45:54,868 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:45:54,868 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:45:54,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:45:54,869 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:45:54,869 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:45:54,869 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:45:54,869 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:45:54,869 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:45:54,869 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:45:54,869 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:45:54,869 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:45:54,870 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:45:54,870 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:45:54,870 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:45:54,870 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:45:54,870 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:45:54,870 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:45:54,870 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:45:54,870 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:45:54,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:45:54,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:45:54,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:45:54,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:45:54,875 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:45:54,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:45:54,875 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:45:54,875 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:45:54,875 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:45:54,875 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:45:54,875 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1b460e4dbdd0bf3097d690d1720c7a2141566e2aa4ca1ed003c7fa25661851d [2024-11-13 15:45:55,236 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:45:55,253 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:45:55,255 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:45:55,257 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:45:55,258 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:45:55,261 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/clever.wvr.c Unable to find full path for "g++" [2024-11-13 15:45:57,561 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:45:57,959 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:45:57,963 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/sv-benchmarks/c/weaver/clever.wvr.c [2024-11-13 15:45:57,985 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/data/f8d5ea1a0/02526eebd6e84c12bffb435982ff8291/FLAG1bcbd51e2 [2024-11-13 15:45:58,004 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/data/f8d5ea1a0/02526eebd6e84c12bffb435982ff8291 [2024-11-13 15:45:58,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:45:58,016 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:45:58,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:45:58,018 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:45:58,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:45:58,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:45:58" (1/1) ... [2024-11-13 15:45:58,028 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8a4ca7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58, skipping insertion in model container [2024-11-13 15:45:58,028 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:45:58" (1/1) ... [2024-11-13 15:45:58,052 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:45:58,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:45:58,313 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:45:58,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:45:58,373 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:45:58,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58 WrapperNode [2024-11-13 15:45:58,374 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:45:58,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:45:58,376 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:45:58,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:45:58,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58" (1/1) ... [2024-11-13 15:45:58,394 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58" (1/1) ... [2024-11-13 15:45:58,421 INFO L138 Inliner]: procedures = 18, calls = 12, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 74 [2024-11-13 15:45:58,423 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:45:58,424 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:45:58,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:45:58,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:45:58,438 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58" (1/1) ... [2024-11-13 15:45:58,439 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58" (1/1) ... [2024-11-13 15:45:58,442 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58" (1/1) ... [2024-11-13 15:45:58,474 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-13 15:45:58,474 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58" (1/1) ... [2024-11-13 15:45:58,474 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58" (1/1) ... [2024-11-13 15:45:58,480 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58" (1/1) ... [2024-11-13 15:45:58,489 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58" (1/1) ... [2024-11-13 15:45:58,492 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58" (1/1) ... [2024-11-13 15:45:58,495 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58" (1/1) ... [2024-11-13 15:45:58,497 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:45:58,498 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:45:58,498 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:45:58,498 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:45:58,505 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58" (1/1) ... [2024-11-13 15:45:58,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:45:58,530 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:45:58,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:45:58,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:45:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:45:58,590 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 15:45:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 15:45:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 15:45:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 15:45:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 15:45:58,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:45:58,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:45:58,594 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 15:45:58,719 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:45:58,720 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:45:59,038 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 15:45:59,038 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:45:59,454 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:45:59,454 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 15:45:59,455 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:45:59 BoogieIcfgContainer [2024-11-13 15:45:59,455 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:45:59,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:45:59,459 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:45:59,467 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:45:59,467 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:45:58" (1/3) ... [2024-11-13 15:45:59,468 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5302ecd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:45:59, skipping insertion in model container [2024-11-13 15:45:59,468 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:45:58" (2/3) ... [2024-11-13 15:45:59,469 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5302ecd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:45:59, skipping insertion in model container [2024-11-13 15:45:59,469 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:45:59" (3/3) ... [2024-11-13 15:45:59,470 INFO L112 eAbstractionObserver]: Analyzing ICFG clever.wvr.c [2024-11-13 15:45:59,488 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:45:59,490 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG clever.wvr.c that has 3 procedures, 20 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2024-11-13 15:45:59,490 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 15:45:59,569 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 15:45:59,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 26 places, 22 transitions, 58 flow [2024-11-13 15:45:59,652 INFO L124 PetriNetUnfolderBase]: 3/20 cut-off events. [2024-11-13 15:45:59,656 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:45:59,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29 conditions, 20 events. 3/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 0 based on Foata normal form. 0/15 useless extension candidates. Maximal degree in co-relation 13. Up to 2 conditions per place. [2024-11-13 15:45:59,662 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 22 transitions, 58 flow [2024-11-13 15:45:59,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 50 flow [2024-11-13 15:45:59,678 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:45:59,697 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;@30b92341, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:45:59,697 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 15:45:59,714 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 15:45:59,714 INFO L124 PetriNetUnfolderBase]: 3/16 cut-off events. [2024-11-13 15:45:59,714 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 15:45:59,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:45:59,718 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:45:59,719 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:45:59,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:45:59,725 INFO L85 PathProgramCache]: Analyzing trace with hash 612279219, now seen corresponding path program 1 times [2024-11-13 15:45:59,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:45:59,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103898726] [2024-11-13 15:45:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:45:59,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:45:59,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:00,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:00,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:00,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103898726] [2024-11-13 15:46:00,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103898726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:46:00,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:46:00,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:46:00,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237365369] [2024-11-13 15:46:00,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:46:00,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:46:00,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:00,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:46:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:46:00,473 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:46:00,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:00,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:46:00,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:46:00,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:46:00,648 INFO L124 PetriNetUnfolderBase]: 106/171 cut-off events. [2024-11-13 15:46:00,648 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-13 15:46:00,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 171 events. 106/171 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 522 event pairs, 19 based on Foata normal form. 2/107 useless extension candidates. Maximal degree in co-relation 318. Up to 110 conditions per place. [2024-11-13 15:46:00,652 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 21 selfloop transitions, 3 changer transitions 1/28 dead transitions. [2024-11-13 15:46:00,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 127 flow [2024-11-13 15:46:00,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:46:00,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 15:46:00,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-11-13 15:46:00,667 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6818181818181818 [2024-11-13 15:46:00,669 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 50 flow. Second operand 3 states and 45 transitions. [2024-11-13 15:46:00,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 127 flow [2024-11-13 15:46:00,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 15:46:00,688 INFO L231 Difference]: Finished difference. Result has 20 places, 19 transitions, 57 flow [2024-11-13 15:46:00,691 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=20, PETRI_TRANSITIONS=19} [2024-11-13 15:46:00,696 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, -3 predicate places. [2024-11-13 15:46:00,696 INFO L471 AbstractCegarLoop]: Abstraction has has 20 places, 19 transitions, 57 flow [2024-11-13 15:46:00,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:00,696 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:46:00,696 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:00,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 15:46:00,697 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:46:00,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:00,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1799710436, now seen corresponding path program 1 times [2024-11-13 15:46:00,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:00,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050097684] [2024-11-13 15:46:00,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:00,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:00,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:00,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:00,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:00,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050097684] [2024-11-13 15:46:00,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050097684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:46:00,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:46:00,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:46:00,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234317957] [2024-11-13 15:46:00,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:46:00,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:46:00,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:00,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:46:00,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:46:00,845 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:46:00,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 19 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:00,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:46:00,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:46:00,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:46:01,070 INFO L124 PetriNetUnfolderBase]: 145/242 cut-off events. [2024-11-13 15:46:01,070 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-13 15:46:01,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 242 events. 145/242 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 800 event pairs, 12 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 172. Up to 96 conditions per place. [2024-11-13 15:46:01,076 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 37 selfloop transitions, 7 changer transitions 2/49 dead transitions. [2024-11-13 15:46:01,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 49 transitions, 236 flow [2024-11-13 15:46:01,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:46:01,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:46:01,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2024-11-13 15:46:01,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6454545454545455 [2024-11-13 15:46:01,082 INFO L175 Difference]: Start difference. First operand has 20 places, 19 transitions, 57 flow. Second operand 5 states and 71 transitions. [2024-11-13 15:46:01,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 49 transitions, 236 flow [2024-11-13 15:46:01,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 49 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 15:46:01,088 INFO L231 Difference]: Finished difference. Result has 26 places, 25 transitions, 105 flow [2024-11-13 15:46:01,088 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=105, PETRI_PLACES=26, PETRI_TRANSITIONS=25} [2024-11-13 15:46:01,089 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2024-11-13 15:46:01,089 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 25 transitions, 105 flow [2024-11-13 15:46:01,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:01,089 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:46:01,089 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:01,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 15:46:01,090 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:46:01,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:01,093 INFO L85 PathProgramCache]: Analyzing trace with hash -2004088814, now seen corresponding path program 2 times [2024-11-13 15:46:01,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:01,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840557475] [2024-11-13 15:46:01,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:01,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:01,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:01,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:01,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840557475] [2024-11-13 15:46:01,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840557475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:46:01,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:46:01,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:46:01,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95442682] [2024-11-13 15:46:01,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:46:01,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:46:01,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:01,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:46:01,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:46:01,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:46:01,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 25 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:01,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:46:01,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:46:01,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:46:01,398 INFO L124 PetriNetUnfolderBase]: 146/238 cut-off events. [2024-11-13 15:46:01,399 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2024-11-13 15:46:01,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 747 conditions, 238 events. 146/238 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 769 event pairs, 14 based on Foata normal form. 4/237 useless extension candidates. Maximal degree in co-relation 306. Up to 103 conditions per place. [2024-11-13 15:46:01,402 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 31 selfloop transitions, 11 changer transitions 5/50 dead transitions. [2024-11-13 15:46:01,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 50 transitions, 299 flow [2024-11-13 15:46:01,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:46:01,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:46:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 67 transitions. [2024-11-13 15:46:01,404 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6090909090909091 [2024-11-13 15:46:01,404 INFO L175 Difference]: Start difference. First operand has 26 places, 25 transitions, 105 flow. Second operand 5 states and 67 transitions. [2024-11-13 15:46:01,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 50 transitions, 299 flow [2024-11-13 15:46:01,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 50 transitions, 299 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 15:46:01,408 INFO L231 Difference]: Finished difference. Result has 33 places, 29 transitions, 170 flow [2024-11-13 15:46:01,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=170, PETRI_PLACES=33, PETRI_TRANSITIONS=29} [2024-11-13 15:46:01,410 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 10 predicate places. [2024-11-13 15:46:01,410 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 29 transitions, 170 flow [2024-11-13 15:46:01,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:01,410 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:46:01,410 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:01,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 15:46:01,411 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:46:01,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:01,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1078447538, now seen corresponding path program 1 times [2024-11-13 15:46:01,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:01,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801147042] [2024-11-13 15:46:01,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:01,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:01,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:46:01,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:01,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801147042] [2024-11-13 15:46:01,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801147042] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:46:01,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706205041] [2024-11-13 15:46:01,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:01,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:01,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:46:01,548 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:46:01,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:46:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:01,640 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:46:01,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:46:01,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:46:01,807 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:46:01,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:46:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706205041] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:46:01,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:46:01,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2024-11-13 15:46:01,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814504845] [2024-11-13 15:46:01,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:46:01,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:46:01,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:01,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:46:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:46:01,861 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:46:01,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 29 transitions, 170 flow. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:01,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:46:01,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:46:01,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:46:02,079 INFO L124 PetriNetUnfolderBase]: 127/223 cut-off events. [2024-11-13 15:46:02,079 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2024-11-13 15:46:02,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 841 conditions, 223 events. 127/223 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 690 event pairs, 2 based on Foata normal form. 18/238 useless extension candidates. Maximal degree in co-relation 498. Up to 91 conditions per place. [2024-11-13 15:46:02,087 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 41 selfloop transitions, 9 changer transitions 3/56 dead transitions. [2024-11-13 15:46:02,087 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 409 flow [2024-11-13 15:46:02,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:46:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:46:02,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2024-11-13 15:46:02,090 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-13 15:46:02,090 INFO L175 Difference]: Start difference. First operand has 33 places, 29 transitions, 170 flow. Second operand 5 states and 70 transitions. [2024-11-13 15:46:02,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 409 flow [2024-11-13 15:46:02,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 56 transitions, 403 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-13 15:46:02,101 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 242 flow [2024-11-13 15:46:02,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-13 15:46:02,102 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 16 predicate places. [2024-11-13 15:46:02,102 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 242 flow [2024-11-13 15:46:02,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:02,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:46:02,103 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:02,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:46:02,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:02,307 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:46:02,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:02,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1561961145, now seen corresponding path program 1 times [2024-11-13 15:46:02,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:02,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576021941] [2024-11-13 15:46:02,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:02,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:02,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:02,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:02,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576021941] [2024-11-13 15:46:02,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576021941] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:46:02,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531378142] [2024-11-13 15:46:02,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:02,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:02,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:46:02,874 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:46:02,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:46:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:02,967 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:46:02,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:46:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:03,310 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:46:03,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:03,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531378142] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:46:03,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:46:03,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-13 15:46:03,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280850409] [2024-11-13 15:46:03,610 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:46:03,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 15:46:03,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:03,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 15:46:03,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:46:03,614 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:46:03,615 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 242 flow. Second operand has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:03,615 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:46:03,615 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:46:03,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:46:04,151 INFO L124 PetriNetUnfolderBase]: 261/447 cut-off events. [2024-11-13 15:46:04,151 INFO L125 PetriNetUnfolderBase]: For 779/779 co-relation queries the response was YES. [2024-11-13 15:46:04,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1833 conditions, 447 events. 261/447 cut-off events. For 779/779 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1713 event pairs, 10 based on Foata normal form. 2/446 useless extension candidates. Maximal degree in co-relation 1002. Up to 188 conditions per place. [2024-11-13 15:46:04,157 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 74 selfloop transitions, 23 changer transitions 7/107 dead transitions. [2024-11-13 15:46:04,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 107 transitions, 903 flow [2024-11-13 15:46:04,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:46:04,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-13 15:46:04,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 128 transitions. [2024-11-13 15:46:04,160 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-11-13 15:46:04,160 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 242 flow. Second operand 9 states and 128 transitions. [2024-11-13 15:46:04,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 107 transitions, 903 flow [2024-11-13 15:46:04,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 107 transitions, 893 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-13 15:46:04,177 INFO L231 Difference]: Finished difference. Result has 50 places, 53 transitions, 485 flow [2024-11-13 15:46:04,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=485, PETRI_PLACES=50, PETRI_TRANSITIONS=53} [2024-11-13 15:46:04,178 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 27 predicate places. [2024-11-13 15:46:04,178 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 53 transitions, 485 flow [2024-11-13 15:46:04,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.76923076923077) internal successors, (114), 13 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:04,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:46:04,179 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:04,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:46:04,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:04,382 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:46:04,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:04,382 INFO L85 PathProgramCache]: Analyzing trace with hash 545603762, now seen corresponding path program 2 times [2024-11-13 15:46:04,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:04,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588080885] [2024-11-13 15:46:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:04,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:04,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:04,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:46:04,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:04,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588080885] [2024-11-13 15:46:04,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588080885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:46:04,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:46:04,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:46:04,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777356935] [2024-11-13 15:46:04,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:46:04,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:46:04,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:46:04,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:46:04,450 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:46:04,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 53 transitions, 485 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:04,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:46:04,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:46:04,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:46:04,602 INFO L124 PetriNetUnfolderBase]: 247/423 cut-off events. [2024-11-13 15:46:04,602 INFO L125 PetriNetUnfolderBase]: For 1228/1228 co-relation queries the response was YES. [2024-11-13 15:46:04,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1957 conditions, 423 events. 247/423 cut-off events. For 1228/1228 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1589 event pairs, 33 based on Foata normal form. 2/421 useless extension candidates. Maximal degree in co-relation 1826. Up to 185 conditions per place. [2024-11-13 15:46:04,608 INFO L140 encePairwiseOnDemand]: 17/22 looper letters, 57 selfloop transitions, 13 changer transitions 5/78 dead transitions. [2024-11-13 15:46:04,608 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 78 transitions, 791 flow [2024-11-13 15:46:04,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:46:04,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 15:46:04,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2024-11-13 15:46:04,610 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2024-11-13 15:46:04,610 INFO L175 Difference]: Start difference. First operand has 50 places, 53 transitions, 485 flow. Second operand 5 states and 64 transitions. [2024-11-13 15:46:04,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 78 transitions, 791 flow [2024-11-13 15:46:04,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 742 flow, removed 23 selfloop flow, removed 1 redundant places. [2024-11-13 15:46:04,620 INFO L231 Difference]: Finished difference. Result has 56 places, 56 transitions, 518 flow [2024-11-13 15:46:04,621 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=56, PETRI_TRANSITIONS=56} [2024-11-13 15:46:04,621 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 33 predicate places. [2024-11-13 15:46:04,622 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 56 transitions, 518 flow [2024-11-13 15:46:04,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:04,622 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:46:04,622 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:04,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 15:46:04,623 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:46:04,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:04,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1245664245, now seen corresponding path program 2 times [2024-11-13 15:46:04,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:04,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172195561] [2024-11-13 15:46:04,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:04,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:04,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:05,050 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:05,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:05,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172195561] [2024-11-13 15:46:05,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172195561] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:46:05,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840646433] [2024-11-13 15:46:05,051 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:46:05,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:05,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:46:05,054 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:46:05,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:46:05,137 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:46:05,137 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:46:05,138 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:46:05,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:46:05,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:05,463 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:46:05,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:05,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840646433] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:46:05,720 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:46:05,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-13 15:46:05,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727831371] [2024-11-13 15:46:05,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:46:05,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 15:46:05,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:05,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 15:46:05,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:46:05,723 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:46:05,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 518 flow. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:05,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:46:05,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:46:05,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:46:06,889 INFO L124 PetriNetUnfolderBase]: 729/1242 cut-off events. [2024-11-13 15:46:06,889 INFO L125 PetriNetUnfolderBase]: For 4699/4699 co-relation queries the response was YES. [2024-11-13 15:46:06,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5856 conditions, 1242 events. 729/1242 cut-off events. For 4699/4699 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6010 event pairs, 45 based on Foata normal form. 8/1248 useless extension candidates. Maximal degree in co-relation 5138. Up to 333 conditions per place. [2024-11-13 15:46:06,902 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 146 selfloop transitions, 96 changer transitions 12/257 dead transitions. [2024-11-13 15:46:06,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 257 transitions, 2619 flow [2024-11-13 15:46:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-13 15:46:06,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-13 15:46:06,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 249 transitions. [2024-11-13 15:46:06,905 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6657754010695187 [2024-11-13 15:46:06,905 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 518 flow. Second operand 17 states and 249 transitions. [2024-11-13 15:46:06,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 257 transitions, 2619 flow [2024-11-13 15:46:06,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 257 transitions, 2513 flow, removed 41 selfloop flow, removed 1 redundant places. [2024-11-13 15:46:06,929 INFO L231 Difference]: Finished difference. Result has 82 places, 147 transitions, 1757 flow [2024-11-13 15:46:06,930 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=498, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1757, PETRI_PLACES=82, PETRI_TRANSITIONS=147} [2024-11-13 15:46:06,930 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 59 predicate places. [2024-11-13 15:46:06,931 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 147 transitions, 1757 flow [2024-11-13 15:46:06,931 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:06,931 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:46:06,931 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:06,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:46:07,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:07,136 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:46:07,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:07,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1759117365, now seen corresponding path program 3 times [2024-11-13 15:46:07,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:07,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088946993] [2024-11-13 15:46:07,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:07,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:07,632 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:07,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:07,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088946993] [2024-11-13 15:46:07,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088946993] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:46:07,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164611286] [2024-11-13 15:46:07,633 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:46:07,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:07,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:46:07,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:46:07,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:46:07,728 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 15:46:07,728 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:46:07,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:46:07,731 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:46:08,011 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:08,012 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:46:08,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:08,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164611286] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:46:08,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:46:08,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-13 15:46:08,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533692967] [2024-11-13 15:46:08,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:46:08,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 15:46:08,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:08,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 15:46:08,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:46:08,237 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:46:08,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 147 transitions, 1757 flow. Second operand has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:08,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:46:08,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:46:08,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:46:09,578 INFO L124 PetriNetUnfolderBase]: 1487/2540 cut-off events. [2024-11-13 15:46:09,579 INFO L125 PetriNetUnfolderBase]: For 13062/13062 co-relation queries the response was YES. [2024-11-13 15:46:09,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13881 conditions, 2540 events. 1487/2540 cut-off events. For 13062/13062 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 14192 event pairs, 113 based on Foata normal form. 7/2545 useless extension candidates. Maximal degree in co-relation 11819. Up to 658 conditions per place. [2024-11-13 15:46:09,623 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 189 selfloop transitions, 164 changer transitions 12/368 dead transitions. [2024-11-13 15:46:09,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 368 transitions, 4819 flow [2024-11-13 15:46:09,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:46:09,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-13 15:46:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 158 transitions. [2024-11-13 15:46:09,626 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6528925619834711 [2024-11-13 15:46:09,626 INFO L175 Difference]: Start difference. First operand has 82 places, 147 transitions, 1757 flow. Second operand 11 states and 158 transitions. [2024-11-13 15:46:09,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 368 transitions, 4819 flow [2024-11-13 15:46:09,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 368 transitions, 4462 flow, removed 175 selfloop flow, removed 2 redundant places. [2024-11-13 15:46:09,716 INFO L231 Difference]: Finished difference. Result has 95 places, 258 transitions, 3563 flow [2024-11-13 15:46:09,716 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3563, PETRI_PLACES=95, PETRI_TRANSITIONS=258} [2024-11-13 15:46:09,717 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 72 predicate places. [2024-11-13 15:46:09,720 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 258 transitions, 3563 flow [2024-11-13 15:46:09,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.692307692307692) internal successors, (113), 13 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:09,720 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:46:09,720 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:09,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 15:46:09,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:09,925 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:46:09,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:09,926 INFO L85 PathProgramCache]: Analyzing trace with hash 407653744, now seen corresponding path program 1 times [2024-11-13 15:46:09,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:09,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281433714] [2024-11-13 15:46:09,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:09,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:46:10,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:10,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281433714] [2024-11-13 15:46:10,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281433714] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:46:10,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297475733] [2024-11-13 15:46:10,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:10,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:10,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:46:10,044 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:46:10,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:46:10,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:10,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:46:10,134 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:46:10,272 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:46:10,272 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:46:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:46:10,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297475733] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:46:10,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:46:10,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-13 15:46:10,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517266825] [2024-11-13 15:46:10,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:46:10,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:46:10,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:10,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:46:10,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:46:10,333 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:46:10,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 258 transitions, 3563 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:10,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:46:10,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:46:10,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:46:11,678 INFO L124 PetriNetUnfolderBase]: 2297/4006 cut-off events. [2024-11-13 15:46:11,679 INFO L125 PetriNetUnfolderBase]: For 27172/27172 co-relation queries the response was YES. [2024-11-13 15:46:11,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23618 conditions, 4006 events. 2297/4006 cut-off events. For 27172/27172 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 25606 event pairs, 49 based on Foata normal form. 48/4051 useless extension candidates. Maximal degree in co-relation 22863. Up to 1209 conditions per place. [2024-11-13 15:46:11,729 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 407 selfloop transitions, 149 changer transitions 2/561 dead transitions. [2024-11-13 15:46:11,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 561 transitions, 8255 flow [2024-11-13 15:46:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:46:11,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-13 15:46:11,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-11-13 15:46:11,732 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-13 15:46:11,732 INFO L175 Difference]: Start difference. First operand has 95 places, 258 transitions, 3563 flow. Second operand 12 states and 154 transitions. [2024-11-13 15:46:11,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 561 transitions, 8255 flow [2024-11-13 15:46:11,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 561 transitions, 8087 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-11-13 15:46:11,922 INFO L231 Difference]: Finished difference. Result has 107 places, 354 transitions, 5545 flow [2024-11-13 15:46:11,923 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=3466, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5545, PETRI_PLACES=107, PETRI_TRANSITIONS=354} [2024-11-13 15:46:11,923 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 84 predicate places. [2024-11-13 15:46:11,923 INFO L471 AbstractCegarLoop]: Abstraction has has 107 places, 354 transitions, 5545 flow [2024-11-13 15:46:11,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:11,926 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:46:11,926 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:11,950 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:46:12,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 15:46:12,129 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:46:12,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:12,129 INFO L85 PathProgramCache]: Analyzing trace with hash 691572421, now seen corresponding path program 2 times [2024-11-13 15:46:12,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:12,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625777264] [2024-11-13 15:46:12,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:12,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:12,744 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:12,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:12,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625777264] [2024-11-13 15:46:12,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625777264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:46:12,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085808137] [2024-11-13 15:46:12,746 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:46:12,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:12,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:46:12,751 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:46:12,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:46:12,863 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:46:12,864 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:46:12,865 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:46:12,867 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:46:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:14,333 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:46:14,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:46:14,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085808137] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:46:14,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:46:14,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 16 [2024-11-13 15:46:14,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24008119] [2024-11-13 15:46:14,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:46:14,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:46:14,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:14,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:46:14,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:46:14,815 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:46:14,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 354 transitions, 5545 flow. Second operand has 17 states, 17 states have (on average 8.470588235294118) internal successors, (144), 17 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:14,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:46:14,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:46:14,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:46:17,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 15:46:25,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-13 15:46:31,471 INFO L124 PetriNetUnfolderBase]: 3525/6159 cut-off events. [2024-11-13 15:46:31,471 INFO L125 PetriNetUnfolderBase]: For 59307/59307 co-relation queries the response was YES. [2024-11-13 15:46:31,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40709 conditions, 6159 events. 3525/6159 cut-off events. For 59307/59307 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 40864 event pairs, 248 based on Foata normal form. 29/6186 useless extension candidates. Maximal degree in co-relation 39985. Up to 3685 conditions per place. [2024-11-13 15:46:31,566 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 493 selfloop transitions, 248 changer transitions 25/769 dead transitions. [2024-11-13 15:46:31,566 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 769 transitions, 12831 flow [2024-11-13 15:46:31,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-13 15:46:31,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-11-13 15:46:31,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 277 transitions. [2024-11-13 15:46:31,569 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6295454545454545 [2024-11-13 15:46:31,569 INFO L175 Difference]: Start difference. First operand has 107 places, 354 transitions, 5545 flow. Second operand 20 states and 277 transitions. [2024-11-13 15:46:31,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 769 transitions, 12831 flow [2024-11-13 15:46:31,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 769 transitions, 12206 flow, removed 303 selfloop flow, removed 2 redundant places. [2024-11-13 15:46:31,993 INFO L231 Difference]: Finished difference. Result has 137 places, 545 transitions, 9286 flow [2024-11-13 15:46:31,994 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=5198, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9286, PETRI_PLACES=137, PETRI_TRANSITIONS=545} [2024-11-13 15:46:31,995 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 114 predicate places. [2024-11-13 15:46:31,995 INFO L471 AbstractCegarLoop]: Abstraction has has 137 places, 545 transitions, 9286 flow [2024-11-13 15:46:31,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.470588235294118) internal successors, (144), 17 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:31,997 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:46:31,997 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:32,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 15:46:32,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 15:46:32,198 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:46:32,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:32,199 INFO L85 PathProgramCache]: Analyzing trace with hash 801421455, now seen corresponding path program 3 times [2024-11-13 15:46:32,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:32,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644883351] [2024-11-13 15:46:32,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:32,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:32,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:46:32,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:32,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644883351] [2024-11-13 15:46:32,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644883351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:46:32,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775465800] [2024-11-13 15:46:32,614 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:46:32,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:32,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:46:32,618 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:46:32,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:46:32,709 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 15:46:32,709 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:46:32,710 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:46:32,711 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:46:33,283 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:33,283 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:46:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 15:46:33,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775465800] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:46:33,441 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:46:33,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 14 [2024-11-13 15:46:33,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959541811] [2024-11-13 15:46:33,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:46:33,441 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 15:46:33,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:33,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 15:46:33,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:46:33,443 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:46:33,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 545 transitions, 9286 flow. Second operand has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:33,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:46:33,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:46:33,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:46:36,890 INFO L124 PetriNetUnfolderBase]: 4986/8770 cut-off events. [2024-11-13 15:46:36,891 INFO L125 PetriNetUnfolderBase]: For 105112/105112 co-relation queries the response was YES. [2024-11-13 15:46:36,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61551 conditions, 8770 events. 4986/8770 cut-off events. For 105112/105112 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 63027 event pairs, 358 based on Foata normal form. 12/8780 useless extension candidates. Maximal degree in co-relation 60507. Up to 5803 conditions per place. [2024-11-13 15:46:36,989 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 631 selfloop transitions, 339 changer transitions 15/988 dead transitions. [2024-11-13 15:46:36,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 988 transitions, 18183 flow [2024-11-13 15:46:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-13 15:46:36,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-13 15:46:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 264 transitions. [2024-11-13 15:46:36,992 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2024-11-13 15:46:36,992 INFO L175 Difference]: Start difference. First operand has 137 places, 545 transitions, 9286 flow. Second operand 18 states and 264 transitions. [2024-11-13 15:46:36,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 988 transitions, 18183 flow [2024-11-13 15:46:37,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 988 transitions, 17329 flow, removed 420 selfloop flow, removed 5 redundant places. [2024-11-13 15:46:37,854 INFO L231 Difference]: Finished difference. Result has 158 places, 817 transitions, 15104 flow [2024-11-13 15:46:37,855 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=8786, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=15104, PETRI_PLACES=158, PETRI_TRANSITIONS=817} [2024-11-13 15:46:37,855 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 135 predicate places. [2024-11-13 15:46:37,856 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 817 transitions, 15104 flow [2024-11-13 15:46:37,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:37,856 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:46:37,856 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:37,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:46:38,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-13 15:46:38,057 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:46:38,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:38,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1742195584, now seen corresponding path program 4 times [2024-11-13 15:46:38,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:38,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38576155] [2024-11-13 15:46:38,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:38,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:38,146 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:46:38,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:38,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38576155] [2024-11-13 15:46:38,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38576155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:46:38,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250501411] [2024-11-13 15:46:38,147 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 15:46:38,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:38,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:46:38,151 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:46:38,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:46:38,236 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 15:46:38,236 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:46:38,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:46:38,239 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:46:38,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:46:38,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:46:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:46:38,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250501411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:46:38,415 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:46:38,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-11-13 15:46:38,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382320856] [2024-11-13 15:46:38,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:46:38,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:46:38,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:38,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:46:38,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:46:38,418 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:46:38,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 817 transitions, 15104 flow. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:38,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:46:38,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:46:38,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:46:43,329 INFO L124 PetriNetUnfolderBase]: 5672/10406 cut-off events. [2024-11-13 15:46:43,330 INFO L125 PetriNetUnfolderBase]: For 144944/144944 co-relation queries the response was YES. [2024-11-13 15:46:43,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75955 conditions, 10406 events. 5672/10406 cut-off events. For 144944/144944 co-relation queries the response was YES. Maximal size of possible extension queue 668. Compared 81286 event pairs, 472 based on Foata normal form. 44/10448 useless extension candidates. Maximal degree in co-relation 71847. Up to 4318 conditions per place. [2024-11-13 15:46:43,442 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 712 selfloop transitions, 593 changer transitions 5/1313 dead transitions. [2024-11-13 15:46:43,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 1313 transitions, 26073 flow [2024-11-13 15:46:43,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:46:43,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 15:46:43,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 173 transitions. [2024-11-13 15:46:43,444 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5616883116883117 [2024-11-13 15:46:43,445 INFO L175 Difference]: Start difference. First operand has 158 places, 817 transitions, 15104 flow. Second operand 14 states and 173 transitions. [2024-11-13 15:46:43,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 1313 transitions, 26073 flow [2024-11-13 15:46:44,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1313 transitions, 25065 flow, removed 484 selfloop flow, removed 4 redundant places. [2024-11-13 15:46:44,821 INFO L231 Difference]: Finished difference. Result has 173 places, 1002 transitions, 19808 flow [2024-11-13 15:46:44,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=14393, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=817, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=416, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=19808, PETRI_PLACES=173, PETRI_TRANSITIONS=1002} [2024-11-13 15:46:44,822 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 150 predicate places. [2024-11-13 15:46:44,822 INFO L471 AbstractCegarLoop]: Abstraction has has 173 places, 1002 transitions, 19808 flow [2024-11-13 15:46:44,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 9 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:44,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:46:44,823 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:44,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 15:46:45,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:45,023 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:46:45,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:45,024 INFO L85 PathProgramCache]: Analyzing trace with hash -2133179027, now seen corresponding path program 5 times [2024-11-13 15:46:45,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:45,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899326599] [2024-11-13 15:46:45,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:45,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:45,348 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:46:45,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899326599] [2024-11-13 15:46:45,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899326599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:46:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469096448] [2024-11-13 15:46:45,348 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 15:46:45,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:45,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:46:45,353 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:46:45,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:46:45,462 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 15:46:45,463 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:46:45,464 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:46:45,466 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:46:45,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:45,961 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:46:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:46:46,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [469096448] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:46:46,118 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:46:46,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 14 [2024-11-13 15:46:46,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824054717] [2024-11-13 15:46:46,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:46:46,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 15:46:46,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:46,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 15:46:46,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:46:46,121 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:46:46,121 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 1002 transitions, 19808 flow. Second operand has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:46,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:46:46,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:46:46,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:46:54,454 INFO L124 PetriNetUnfolderBase]: 6966/12837 cut-off events. [2024-11-13 15:46:54,454 INFO L125 PetriNetUnfolderBase]: For 218024/218024 co-relation queries the response was YES. [2024-11-13 15:46:54,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100247 conditions, 12837 events. 6966/12837 cut-off events. For 218024/218024 co-relation queries the response was YES. Maximal size of possible extension queue 790. Compared 103552 event pairs, 573 based on Foata normal form. 35/12870 useless extension candidates. Maximal degree in co-relation 95268. Up to 5661 conditions per place. [2024-11-13 15:46:54,603 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 571 selfloop transitions, 950 changer transitions 18/1542 dead transitions. [2024-11-13 15:46:54,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 1542 transitions, 33039 flow [2024-11-13 15:46:54,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 15:46:54,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-13 15:46:54,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 317 transitions. [2024-11-13 15:46:54,606 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6003787878787878 [2024-11-13 15:46:54,606 INFO L175 Difference]: Start difference. First operand has 173 places, 1002 transitions, 19808 flow. Second operand 24 states and 317 transitions. [2024-11-13 15:46:54,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 1542 transitions, 33039 flow [2024-11-13 15:46:57,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 1542 transitions, 32209 flow, removed 384 selfloop flow, removed 5 redundant places. [2024-11-13 15:46:57,335 INFO L231 Difference]: Finished difference. Result has 203 places, 1402 transitions, 32003 flow [2024-11-13 15:46:57,336 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=17673, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=544, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=32003, PETRI_PLACES=203, PETRI_TRANSITIONS=1402} [2024-11-13 15:46:57,336 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 180 predicate places. [2024-11-13 15:46:57,337 INFO L471 AbstractCegarLoop]: Abstraction has has 203 places, 1402 transitions, 32003 flow [2024-11-13 15:46:57,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.4) internal successors, (126), 15 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:57,337 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:46:57,337 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:46:57,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:46:57,537 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 15:46:57,538 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:46:57,538 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:46:57,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1488948122, now seen corresponding path program 6 times [2024-11-13 15:46:57,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:46:57,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496854002] [2024-11-13 15:46:57,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:46:57,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:46:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:46:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:57,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:46:57,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496854002] [2024-11-13 15:46:57,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496854002] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:46:57,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009318250] [2024-11-13 15:46:57,634 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 15:46:57,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:46:57,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:46:57,637 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:46:57,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:46:57,723 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 15:46:57,723 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:46:57,724 INFO L255 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:46:57,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:46:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:57,859 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:46:57,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:46:57,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009318250] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:46:57,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:46:57,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2024-11-13 15:46:57,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300509525] [2024-11-13 15:46:57,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:46:57,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:46:57,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:46:57,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:46:57,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:46:57,915 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:46:57,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 1402 transitions, 32003 flow. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:46:57,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:46:57,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:46:57,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:47:08,485 INFO L124 PetriNetUnfolderBase]: 8401/15265 cut-off events. [2024-11-13 15:47:08,485 INFO L125 PetriNetUnfolderBase]: For 292556/292556 co-relation queries the response was YES. [2024-11-13 15:47:08,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128754 conditions, 15265 events. 8401/15265 cut-off events. For 292556/292556 co-relation queries the response was YES. Maximal size of possible extension queue 1019. Compared 125140 event pairs, 620 based on Foata normal form. 146/15409 useless extension candidates. Maximal degree in co-relation 122560. Up to 6776 conditions per place. [2024-11-13 15:47:08,807 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 1060 selfloop transitions, 1013 changer transitions 0/2076 dead transitions. [2024-11-13 15:47:08,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 2076 transitions, 49311 flow [2024-11-13 15:47:08,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:47:08,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 15:47:08,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 177 transitions. [2024-11-13 15:47:08,809 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5746753246753247 [2024-11-13 15:47:08,809 INFO L175 Difference]: Start difference. First operand has 203 places, 1402 transitions, 32003 flow. Second operand 14 states and 177 transitions. [2024-11-13 15:47:08,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 2076 transitions, 49311 flow [2024-11-13 15:47:14,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 2076 transitions, 47026 flow, removed 1117 selfloop flow, removed 8 redundant places. [2024-11-13 15:47:14,709 INFO L231 Difference]: Finished difference. Result has 216 places, 1721 transitions, 41733 flow [2024-11-13 15:47:14,710 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=30241, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=716, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=571, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=41733, PETRI_PLACES=216, PETRI_TRANSITIONS=1721} [2024-11-13 15:47:14,711 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 193 predicate places. [2024-11-13 15:47:14,711 INFO L471 AbstractCegarLoop]: Abstraction has has 216 places, 1721 transitions, 41733 flow [2024-11-13 15:47:14,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 10 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:47:14,711 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:47:14,711 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:47:14,730 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:47:14,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 15:47:14,916 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:47:14,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:47:14,917 INFO L85 PathProgramCache]: Analyzing trace with hash -930156500, now seen corresponding path program 7 times [2024-11-13 15:47:14,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:47:14,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636777926] [2024-11-13 15:47:14,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:47:14,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:47:14,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:47:15,024 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:47:15,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:47:15,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636777926] [2024-11-13 15:47:15,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636777926] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:47:15,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592525917] [2024-11-13 15:47:15,025 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 15:47:15,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:47:15,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:47:15,028 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:47:15,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:47:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:47:15,115 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 15:47:15,117 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:47:15,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:47:15,338 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:47:15,383 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 15:47:15,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592525917] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:47:15,383 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:47:15,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 8 [2024-11-13 15:47:15,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730646124] [2024-11-13 15:47:15,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:47:15,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:47:15,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:47:15,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:47:15,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:47:15,385 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:47:15,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 1721 transitions, 41733 flow. Second operand has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:47:15,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:47:15,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:47:15,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:47:28,198 INFO L124 PetriNetUnfolderBase]: 8971/16289 cut-off events. [2024-11-13 15:47:28,199 INFO L125 PetriNetUnfolderBase]: For 378283/378283 co-relation queries the response was YES. [2024-11-13 15:47:28,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149382 conditions, 16289 events. 8971/16289 cut-off events. For 378283/378283 co-relation queries the response was YES. Maximal size of possible extension queue 1145. Compared 136146 event pairs, 65 based on Foata normal form. 78/16364 useless extension candidates. Maximal degree in co-relation 143324. Up to 5202 conditions per place. [2024-11-13 15:47:28,459 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 1577 selfloop transitions, 723 changer transitions 0/2303 dead transitions. [2024-11-13 15:47:28,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 2303 transitions, 56205 flow [2024-11-13 15:47:28,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:47:28,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 15:47:28,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 182 transitions. [2024-11-13 15:47:28,461 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5515151515151515 [2024-11-13 15:47:28,461 INFO L175 Difference]: Start difference. First operand has 216 places, 1721 transitions, 41733 flow. Second operand 15 states and 182 transitions. [2024-11-13 15:47:28,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 2303 transitions, 56205 flow [2024-11-13 15:47:38,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 2303 transitions, 55893 flow, removed 150 selfloop flow, removed 2 redundant places. [2024-11-13 15:47:38,158 INFO L231 Difference]: Finished difference. Result has 232 places, 1834 transitions, 46617 flow [2024-11-13 15:47:38,159 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=40939, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=604, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1086, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=46617, PETRI_PLACES=232, PETRI_TRANSITIONS=1834} [2024-11-13 15:47:38,160 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 209 predicate places. [2024-11-13 15:47:38,160 INFO L471 AbstractCegarLoop]: Abstraction has has 232 places, 1834 transitions, 46617 flow [2024-11-13 15:47:38,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.0) internal successors, (81), 9 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:47:38,160 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:47:38,160 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:47:38,176 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 15:47:38,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 15:47:38,361 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:47:38,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:47:38,361 INFO L85 PathProgramCache]: Analyzing trace with hash 928297107, now seen corresponding path program 8 times [2024-11-13 15:47:38,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:47:38,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032356645] [2024-11-13 15:47:38,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:47:38,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:47:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:47:38,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:47:38,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:47:38,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032356645] [2024-11-13 15:47:38,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032356645] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:47:38,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826620816] [2024-11-13 15:47:38,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:47:38,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:47:38,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:47:38,742 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:47:38,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:47:38,859 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:47:38,860 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:47:38,861 INFO L255 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:47:38,863 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:47:39,359 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:47:39,360 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:47:39,591 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:47:39,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826620816] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:47:39,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:47:39,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 16 [2024-11-13 15:47:39,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525517755] [2024-11-13 15:47:39,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:47:39,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 15:47:39,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:47:39,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 15:47:39,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-13 15:47:39,594 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:47:39,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 1834 transitions, 46617 flow. Second operand has 17 states, 17 states have (on average 8.117647058823529) internal successors, (138), 17 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:47:39,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:47:39,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:47:39,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:48:01,988 INFO L124 PetriNetUnfolderBase]: 11803/21442 cut-off events. [2024-11-13 15:48:01,988 INFO L125 PetriNetUnfolderBase]: For 588490/588490 co-relation queries the response was YES. [2024-11-13 15:48:02,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210946 conditions, 21442 events. 11803/21442 cut-off events. For 588490/588490 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 184903 event pairs, 887 based on Foata normal form. 47/21486 useless extension candidates. Maximal degree in co-relation 202543. Up to 9700 conditions per place. [2024-11-13 15:48:02,543 INFO L140 encePairwiseOnDemand]: 16/22 looper letters, 929 selfloop transitions, 1889 changer transitions 49/2870 dead transitions. [2024-11-13 15:48:02,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 2870 transitions, 79000 flow [2024-11-13 15:48:02,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 15:48:02,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-13 15:48:02,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 425 transitions. [2024-11-13 15:48:02,545 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2024-11-13 15:48:02,545 INFO L175 Difference]: Start difference. First operand has 232 places, 1834 transitions, 46617 flow. Second operand 34 states and 425 transitions. [2024-11-13 15:48:02,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 2870 transitions, 79000 flow [2024-11-13 15:48:16,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 2870 transitions, 77626 flow, removed 173 selfloop flow, removed 4 redundant places. [2024-11-13 15:48:16,101 INFO L231 Difference]: Finished difference. Result has 277 places, 2610 transitions, 75717 flow [2024-11-13 15:48:16,103 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=45949, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1834, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1214, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=533, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=75717, PETRI_PLACES=277, PETRI_TRANSITIONS=2610} [2024-11-13 15:48:16,104 INFO L277 CegarLoopForPetriNet]: 23 programPoint places, 254 predicate places. [2024-11-13 15:48:16,104 INFO L471 AbstractCegarLoop]: Abstraction has has 277 places, 2610 transitions, 75717 flow [2024-11-13 15:48:16,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 8.117647058823529) internal successors, (138), 17 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:48:16,104 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:48:16,104 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:48:16,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 15:48:16,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 15:48:16,305 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:48:16,305 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:48:16,305 INFO L85 PathProgramCache]: Analyzing trace with hash 745121135, now seen corresponding path program 9 times [2024-11-13 15:48:16,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:48:16,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819253204] [2024-11-13 15:48:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:48:16,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:48:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:48:16,369 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:48:16,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:48:16,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819253204] [2024-11-13 15:48:16,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819253204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:48:16,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175324932] [2024-11-13 15:48:16,369 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 15:48:16,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:48:16,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:48:16,373 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:48:16,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_353ad87e-175e-4e07-9b1c-0f09205aca01/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:48:16,452 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-13 15:48:16,453 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:48:16,454 INFO L255 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:48:16,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:48:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:48:16,489 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:48:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 15:48:16,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175324932] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:48:16,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:48:16,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-13 15:48:16,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764007373] [2024-11-13 15:48:16,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:48:16,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:48:16,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:48:16,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:48:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:48:16,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 22 [2024-11-13 15:48:16,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 2610 transitions, 75717 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:48:16,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:48:16,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 22 [2024-11-13 15:48:16,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand