./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-queue.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_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/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_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/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_a54716ac-c0ea-478a-8c10-54c56db7c168/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 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 13:43:18,614 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 13:43:18,711 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 13:43:18,718 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 13:43:18,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 13:43:18,748 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 13:43:18,749 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 13:43:18,749 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 13:43:18,750 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 13:43:18,750 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 13:43:18,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 13:43:18,750 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 13:43:18,750 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 13:43:18,750 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 13:43:18,750 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 13:43:18,751 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 13:43:18,751 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 13:43:18,751 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 13:43:18,751 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 13:43:18,751 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 13:43:18,751 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 13:43:18,751 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 13:43:18,751 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 13:43:18,752 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 13:43:18,752 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 13:43:18,752 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 13:43:18,752 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 13:43:18,752 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 13:43:18,752 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 13:43:18,752 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 13:43:18,752 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 13:43:18,753 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 13:43:18,753 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 13:43:18,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:43:18,756 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 13:43:18,756 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 13:43:18,756 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 13:43:18,756 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 13:43:18,757 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 13:43:18,757 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 13:43:18,757 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 13:43:18,757 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 13:43:18,757 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_a54716ac-c0ea-478a-8c10-54c56db7c168/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 -> 608e0c2870f111f9f6921442a1f1a544ee956a8de04c7629c0edf3e54cde4da3 [2024-11-13 13:43:19,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 13:43:19,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 13:43:19,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 13:43:19,065 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 13:43:19,066 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 13:43:19,067 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c Unable to find full path for "g++" [2024-11-13 13:43:21,088 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 13:43:21,377 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 13:43:21,378 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/sv-benchmarks/c/weaver/popl20-simple-queue.wvr.c [2024-11-13 13:43:21,389 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/data/c04d05c54/fe9f50e1ac924f7eafa2664d8c97a5f6/FLAG7f01bb22d [2024-11-13 13:43:21,413 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/data/c04d05c54/fe9f50e1ac924f7eafa2664d8c97a5f6 [2024-11-13 13:43:21,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 13:43:21,418 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 13:43:21,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 13:43:21,420 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 13:43:21,425 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 13:43:21,426 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:43:21" (1/1) ... [2024-11-13 13:43:21,426 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e927a33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21, skipping insertion in model container [2024-11-13 13:43:21,427 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:43:21" (1/1) ... [2024-11-13 13:43:21,452 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 13:43:21,659 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 13:43:21,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:43:21,677 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 13:43:21,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 13:43:21,727 INFO L204 MainTranslator]: Completed translation [2024-11-13 13:43:21,727 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21 WrapperNode [2024-11-13 13:43:21,727 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 13:43:21,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 13:43:21,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 13:43:21,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 13:43:21,737 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21" (1/1) ... [2024-11-13 13:43:21,745 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21" (1/1) ... [2024-11-13 13:43:21,771 INFO L138 Inliner]: procedures = 23, calls = 24, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 124 [2024-11-13 13:43:21,775 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 13:43:21,776 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 13:43:21,776 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 13:43:21,776 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 13:43:21,785 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21" (1/1) ... [2024-11-13 13:43:21,785 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21" (1/1) ... [2024-11-13 13:43:21,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21" (1/1) ... [2024-11-13 13:43:21,801 INFO L175 MemorySlicer]: Split 5 memory accesses to 2 slices as follows [2, 3]. 60 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 13:43:21,802 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21" (1/1) ... [2024-11-13 13:43:21,802 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21" (1/1) ... [2024-11-13 13:43:21,808 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21" (1/1) ... [2024-11-13 13:43:21,815 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21" (1/1) ... [2024-11-13 13:43:21,817 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21" (1/1) ... [2024-11-13 13:43:21,818 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21" (1/1) ... [2024-11-13 13:43:21,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 13:43:21,823 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 13:43:21,823 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 13:43:21,823 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 13:43:21,824 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21" (1/1) ... [2024-11-13 13:43:21,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 13:43:21,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:21,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 13:43:21,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 13:43:21,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 13:43:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 13:43:21,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 13:43:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 13:43:21,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 13:43:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 13:43:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 13:43:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 13:43:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 13:43:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-13 13:43:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-13 13:43:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 13:43:21,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 13:43:21,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 13:43:21,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 13:43:21,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 13:43:21,895 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 13:43:22,002 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 13:43:22,004 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 13:43:22,278 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 13:43:22,278 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 13:43:22,523 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 13:43:22,523 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-11-13 13:43:22,523 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:43:22 BoogieIcfgContainer [2024-11-13 13:43:22,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 13:43:22,528 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 13:43:22,528 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 13:43:22,534 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 13:43:22,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:43:21" (1/3) ... [2024-11-13 13:43:22,535 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f512f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:43:22, skipping insertion in model container [2024-11-13 13:43:22,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:43:21" (2/3) ... [2024-11-13 13:43:22,539 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f512f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:43:22, skipping insertion in model container [2024-11-13 13:43:22,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:43:22" (3/3) ... [2024-11-13 13:43:22,540 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-queue.wvr.c [2024-11-13 13:43:22,558 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 13:43:22,560 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-simple-queue.wvr.c that has 3 procedures, 33 locations, 1 initial locations, 3 loop locations, and 8 error locations. [2024-11-13 13:43:22,560 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 13:43:22,648 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-13 13:43:22,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 37 transitions, 88 flow [2024-11-13 13:43:22,738 INFO L124 PetriNetUnfolderBase]: 5/35 cut-off events. [2024-11-13 13:43:22,741 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-13 13:43:22,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 35 events. 5/35 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 53 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-11-13 13:43:22,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 37 transitions, 88 flow [2024-11-13 13:43:22,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 34 transitions, 80 flow [2024-11-13 13:43:22,770 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 13:43:22,782 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;@106c0b5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 13:43:22,782 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-13 13:43:22,786 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 13:43:22,786 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-13 13:43:22,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-13 13:43:22,786 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:22,787 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:43:22,787 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:22,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:22,796 INFO L85 PathProgramCache]: Analyzing trace with hash 403305, now seen corresponding path program 1 times [2024-11-13 13:43:22,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:22,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646490289] [2024-11-13 13:43:22,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:22,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:22,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:43:23,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:23,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646490289] [2024-11-13 13:43:23,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646490289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:43:23,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:43:23,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-13 13:43:23,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415674851] [2024-11-13 13:43:23,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:43:23,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:43:23,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:23,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:43:23,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:43:23,167 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-13 13:43:23,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:23,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:23,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-13 13:43:23,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:23,386 INFO L124 PetriNetUnfolderBase]: 212/371 cut-off events. [2024-11-13 13:43:23,386 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2024-11-13 13:43:23,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 371 events. 212/371 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1454 event pairs, 176 based on Foata normal form. 1/265 useless extension candidates. Maximal degree in co-relation 705. Up to 364 conditions per place. [2024-11-13 13:43:23,393 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2024-11-13 13:43:23,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 120 flow [2024-11-13 13:43:23,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:43:23,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:43:23,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-11-13 13:43:23,408 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-11-13 13:43:23,411 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 80 flow. Second operand 3 states and 50 transitions. [2024-11-13 13:43:23,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 120 flow [2024-11-13 13:43:23,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-13 13:43:23,422 INFO L231 Difference]: Finished difference. Result has 31 places, 29 transitions, 66 flow [2024-11-13 13:43:23,424 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=31, PETRI_TRANSITIONS=29} [2024-11-13 13:43:23,429 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2024-11-13 13:43:23,430 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 29 transitions, 66 flow [2024-11-13 13:43:23,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:23,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:23,431 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-13 13:43:23,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 13:43:23,431 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:23,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:23,432 INFO L85 PathProgramCache]: Analyzing trace with hash 403306, now seen corresponding path program 1 times [2024-11-13 13:43:23,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:23,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414372078] [2024-11-13 13:43:23,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:23,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:23,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:43:23,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:23,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414372078] [2024-11-13 13:43:23,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414372078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:43:23,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:43:23,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:43:23,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476481980] [2024-11-13 13:43:23,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:43:23,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:43:23,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:23,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:43:23,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:43:23,873 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-13 13:43:23,874 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 29 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:23,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:23,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-13 13:43:23,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:24,123 INFO L124 PetriNetUnfolderBase]: 213/374 cut-off events. [2024-11-13 13:43:24,123 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 13:43:24,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 374 events. 213/374 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1462 event pairs, 176 based on Foata normal form. 0/267 useless extension candidates. Maximal degree in co-relation 737. Up to 369 conditions per place. [2024-11-13 13:43:24,129 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-11-13 13:43:24,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 132 flow [2024-11-13 13:43:24,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:43:24,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:43:24,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 58 transitions. [2024-11-13 13:43:24,131 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3918918918918919 [2024-11-13 13:43:24,131 INFO L175 Difference]: Start difference. First operand has 31 places, 29 transitions, 66 flow. Second operand 4 states and 58 transitions. [2024-11-13 13:43:24,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 132 flow [2024-11-13 13:43:24,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:43:24,136 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 89 flow [2024-11-13 13:43:24,137 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2024-11-13 13:43:24,138 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-11-13 13:43:24,139 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 89 flow [2024-11-13 13:43:24,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:24,139 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:24,139 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-13 13:43:24,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 13:43:24,141 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:24,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:24,142 INFO L85 PathProgramCache]: Analyzing trace with hash 387589245, now seen corresponding path program 1 times [2024-11-13 13:43:24,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:24,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206020710] [2024-11-13 13:43:24,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:24,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:24,628 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 13:43:24,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:24,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206020710] [2024-11-13 13:43:24,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206020710] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:43:24,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526241617] [2024-11-13 13:43:24,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:24,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:24,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:24,635 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:43:24,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 13:43:24,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:24,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-13 13:43:24,743 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:24,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-13 13:43:25,151 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 13:43:25,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:43:25,306 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 13:43:25,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526241617] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:43:25,306 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:43:25,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-13 13:43:25,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085058441] [2024-11-13 13:43:25,307 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:43:25,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 13:43:25,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:25,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 13:43:25,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-13 13:43:25,343 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-13 13:43:25,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 89 flow. Second operand has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:25,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:25,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-13 13:43:25,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:25,708 INFO L124 PetriNetUnfolderBase]: 214/376 cut-off events. [2024-11-13 13:43:25,708 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-13 13:43:25,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 775 conditions, 376 events. 214/376 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1464 event pairs, 176 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 744. Up to 366 conditions per place. [2024-11-13 13:43:25,710 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 21 selfloop transitions, 10 changer transitions 0/34 dead transitions. [2024-11-13 13:43:25,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 159 flow [2024-11-13 13:43:25,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 13:43:25,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-13 13:43:25,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-11-13 13:43:25,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.30067567567567566 [2024-11-13 13:43:25,715 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 89 flow. Second operand 8 states and 89 transitions. [2024-11-13 13:43:25,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 159 flow [2024-11-13 13:43:25,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 34 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:43:25,717 INFO L231 Difference]: Finished difference. Result has 39 places, 34 transitions, 114 flow [2024-11-13 13:43:25,717 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=114, PETRI_PLACES=39, PETRI_TRANSITIONS=34} [2024-11-13 13:43:25,718 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 3 predicate places. [2024-11-13 13:43:25,718 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 34 transitions, 114 flow [2024-11-13 13:43:25,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.363636363636363) internal successors, (92), 11 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:25,719 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:25,719 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:25,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 13:43:25,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:25,923 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:25,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:25,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1131636021, now seen corresponding path program 1 times [2024-11-13 13:43:25,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:25,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224568874] [2024-11-13 13:43:25,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:25,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:26,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:43:26,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:26,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224568874] [2024-11-13 13:43:26,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224568874] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:43:26,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:43:26,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:43:26,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681019169] [2024-11-13 13:43:26,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:43:26,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:43:26,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:26,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:43:26,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:43:26,039 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-11-13 13:43:26,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 34 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:26,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:26,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-11-13 13:43:26,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:26,141 INFO L124 PetriNetUnfolderBase]: 166/295 cut-off events. [2024-11-13 13:43:26,142 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-13 13:43:26,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 295 events. 166/295 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1072 event pairs, 132 based on Foata normal form. 0/230 useless extension candidates. Maximal degree in co-relation 582. Up to 284 conditions per place. [2024-11-13 13:43:26,147 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 25 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-11-13 13:43:26,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 168 flow [2024-11-13 13:43:26,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:43:26,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:43:26,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 53 transitions. [2024-11-13 13:43:26,151 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3581081081081081 [2024-11-13 13:43:26,151 INFO L175 Difference]: Start difference. First operand has 39 places, 34 transitions, 114 flow. Second operand 4 states and 53 transitions. [2024-11-13 13:43:26,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 168 flow [2024-11-13 13:43:26,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 126 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-11-13 13:43:26,154 INFO L231 Difference]: Finished difference. Result has 33 places, 32 transitions, 76 flow [2024-11-13 13:43:26,155 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=32} [2024-11-13 13:43:26,157 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -3 predicate places. [2024-11-13 13:43:26,157 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 32 transitions, 76 flow [2024-11-13 13:43:26,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:26,158 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:26,158 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:26,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 13:43:26,159 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:26,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:26,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1131636020, now seen corresponding path program 1 times [2024-11-13 13:43:26,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:26,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110346458] [2024-11-13 13:43:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:26,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:26,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:43:26,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:26,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110346458] [2024-11-13 13:43:26,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110346458] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:43:26,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:43:26,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:43:26,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368941931] [2024-11-13 13:43:26,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:43:26,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 13:43:26,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:26,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 13:43:26,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 13:43:26,302 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-13 13:43:26,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 32 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:26,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:26,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-13 13:43:26,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:26,460 INFO L124 PetriNetUnfolderBase]: 233/434 cut-off events. [2024-11-13 13:43:26,460 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2024-11-13 13:43:26,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 434 events. 233/434 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1802 event pairs, 200 based on Foata normal form. 23/371 useless extension candidates. Maximal degree in co-relation 574. Up to 289 conditions per place. [2024-11-13 13:43:26,463 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 39 selfloop transitions, 3 changer transitions 2/47 dead transitions. [2024-11-13 13:43:26,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 198 flow [2024-11-13 13:43:26,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:43:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:43:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-11-13 13:43:26,464 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5202702702702703 [2024-11-13 13:43:26,465 INFO L175 Difference]: Start difference. First operand has 33 places, 32 transitions, 76 flow. Second operand 4 states and 77 transitions. [2024-11-13 13:43:26,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 198 flow [2024-11-13 13:43:26,465 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 47 transitions, 193 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:43:26,466 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 86 flow [2024-11-13 13:43:26,466 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=86, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2024-11-13 13:43:26,467 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-11-13 13:43:26,467 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 86 flow [2024-11-13 13:43:26,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:26,467 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:26,467 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:26,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 13:43:26,468 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:26,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:26,469 INFO L85 PathProgramCache]: Analyzing trace with hash 6674015, now seen corresponding path program 1 times [2024-11-13 13:43:26,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:26,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589707550] [2024-11-13 13:43:26,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:26,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:26,799 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 13:43:26,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:26,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589707550] [2024-11-13 13:43:26,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589707550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:43:26,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:43:26,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 13:43:26,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63424819] [2024-11-13 13:43:26,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:43:26,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 13:43:26,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:26,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 13:43:26,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 13:43:26,819 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-13 13:43:26,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:26,821 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:26,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-13 13:43:26,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:26,958 INFO L124 PetriNetUnfolderBase]: 191/363 cut-off events. [2024-11-13 13:43:26,958 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-13 13:43:26,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 768 conditions, 363 events. 191/363 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1467 event pairs, 162 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 472. Up to 348 conditions per place. [2024-11-13 13:43:26,961 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 23 selfloop transitions, 4 changer transitions 0/30 dead transitions. [2024-11-13 13:43:26,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 132 flow [2024-11-13 13:43:26,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:43:26,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:43:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2024-11-13 13:43:26,962 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3716216216216216 [2024-11-13 13:43:26,963 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 86 flow. Second operand 4 states and 55 transitions. [2024-11-13 13:43:26,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 132 flow [2024-11-13 13:43:26,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:43:26,964 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 81 flow [2024-11-13 13:43:26,964 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2024-11-13 13:43:26,965 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2024-11-13 13:43:26,965 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 81 flow [2024-11-13 13:43:26,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:26,965 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:26,966 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:26,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 13:43:26,966 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:26,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:26,966 INFO L85 PathProgramCache]: Analyzing trace with hash -2060721864, now seen corresponding path program 1 times [2024-11-13 13:43:26,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:26,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298705658] [2024-11-13 13:43:26,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:26,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:26,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:27,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:43:27,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:27,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298705658] [2024-11-13 13:43:27,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298705658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:43:27,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:43:27,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:43:27,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139009147] [2024-11-13 13:43:27,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:43:27,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:43:27,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:27,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:43:27,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:43:27,028 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-13 13:43:27,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:27,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:27,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-13 13:43:27,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:27,187 INFO L124 PetriNetUnfolderBase]: 272/497 cut-off events. [2024-11-13 13:43:27,188 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2024-11-13 13:43:27,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1060 conditions, 497 events. 272/497 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2045 event pairs, 150 based on Foata normal form. 2/424 useless extension candidates. Maximal degree in co-relation 751. Up to 315 conditions per place. [2024-11-13 13:43:27,192 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 34 selfloop transitions, 2 changer transitions 4/43 dead transitions. [2024-11-13 13:43:27,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 193 flow [2024-11-13 13:43:27,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:43:27,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:43:27,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 59 transitions. [2024-11-13 13:43:27,195 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5315315315315315 [2024-11-13 13:43:27,196 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 81 flow. Second operand 3 states and 59 transitions. [2024-11-13 13:43:27,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 193 flow [2024-11-13 13:43:27,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-13 13:43:27,198 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 84 flow [2024-11-13 13:43:27,199 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2024-11-13 13:43:27,199 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2024-11-13 13:43:27,200 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 84 flow [2024-11-13 13:43:27,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:27,200 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:27,200 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:27,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 13:43:27,201 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:27,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:27,201 INFO L85 PathProgramCache]: Analyzing trace with hash 323356111, now seen corresponding path program 1 times [2024-11-13 13:43:27,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:27,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235455364] [2024-11-13 13:43:27,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:27,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 13:43:27,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:27,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235455364] [2024-11-13 13:43:27,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235455364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 13:43:27,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 13:43:27,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 13:43:27,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726642905] [2024-11-13 13:43:27,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 13:43:27,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 13:43:27,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 13:43:27,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 13:43:27,289 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-13 13:43:27,289 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:27,289 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:27,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-13 13:43:27,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:27,415 INFO L124 PetriNetUnfolderBase]: 252/452 cut-off events. [2024-11-13 13:43:27,415 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2024-11-13 13:43:27,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1011 conditions, 452 events. 252/452 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1685 event pairs, 113 based on Foata normal form. 11/392 useless extension candidates. Maximal degree in co-relation 983. Up to 306 conditions per place. [2024-11-13 13:43:27,418 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 33 selfloop transitions, 2 changer transitions 6/44 dead transitions. [2024-11-13 13:43:27,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 44 transitions, 199 flow [2024-11-13 13:43:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 13:43:27,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 13:43:27,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 60 transitions. [2024-11-13 13:43:27,420 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5405405405405406 [2024-11-13 13:43:27,420 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 84 flow. Second operand 3 states and 60 transitions. [2024-11-13 13:43:27,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 44 transitions, 199 flow [2024-11-13 13:43:27,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 44 transitions, 197 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 13:43:27,422 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 96 flow [2024-11-13 13:43:27,422 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2024-11-13 13:43:27,422 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2024-11-13 13:43:27,423 INFO L471 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 96 flow [2024-11-13 13:43:27,425 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:27,425 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:27,426 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:27,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 13:43:27,426 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:27,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:27,427 INFO L85 PathProgramCache]: Analyzing trace with hash -67223132, now seen corresponding path program 1 times [2024-11-13 13:43:27,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:27,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238217055] [2024-11-13 13:43:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:27,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:27,995 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 13:43:27,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:27,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238217055] [2024-11-13 13:43:27,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238217055] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:43:27,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095735592] [2024-11-13 13:43:27,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:27,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:27,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:27,998 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:43:27,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 13:43:28,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:28,092 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 13:43:28,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:28,151 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-13 13:43:28,386 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 13:43:28,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:43:28,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2024-11-13 13:43:29,016 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 13:43:29,016 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 37 [2024-11-13 13:43:29,121 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 13:43:29,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095735592] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:43:29,122 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:43:29,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 15 [2024-11-13 13:43:29,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642600059] [2024-11-13 13:43:29,122 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:43:29,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 13:43:29,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:29,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 13:43:29,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:43:29,196 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-13 13:43:29,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 96 flow. Second operand has 16 states, 16 states have (on average 11.5625) internal successors, (185), 16 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:29,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:29,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-13 13:43:29,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:30,334 INFO L124 PetriNetUnfolderBase]: 911/1624 cut-off events. [2024-11-13 13:43:30,334 INFO L125 PetriNetUnfolderBase]: For 484/484 co-relation queries the response was YES. [2024-11-13 13:43:30,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3774 conditions, 1624 events. 911/1624 cut-off events. For 484/484 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 8320 event pairs, 351 based on Foata normal form. 3/1376 useless extension candidates. Maximal degree in co-relation 2339. Up to 440 conditions per place. [2024-11-13 13:43:30,341 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 90 selfloop transitions, 18 changer transitions 39/150 dead transitions. [2024-11-13 13:43:30,341 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 150 transitions, 715 flow [2024-11-13 13:43:30,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 13:43:30,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-13 13:43:30,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 260 transitions. [2024-11-13 13:43:30,343 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5019305019305019 [2024-11-13 13:43:30,343 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 96 flow. Second operand 14 states and 260 transitions. [2024-11-13 13:43:30,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 150 transitions, 715 flow [2024-11-13 13:43:30,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 150 transitions, 702 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-13 13:43:30,347 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 214 flow [2024-11-13 13:43:30,347 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=214, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2024-11-13 13:43:30,348 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2024-11-13 13:43:30,348 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 214 flow [2024-11-13 13:43:30,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.5625) internal successors, (185), 16 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:30,348 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:30,348 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:30,368 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 13:43:30,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:30,552 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:30,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash -625726617, now seen corresponding path program 2 times [2024-11-13 13:43:30,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:30,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939626296] [2024-11-13 13:43:30,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:30,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:30,684 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:43:30,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:30,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939626296] [2024-11-13 13:43:30,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939626296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:43:30,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981589430] [2024-11-13 13:43:30,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:43:30,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:30,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:30,688 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:43:30,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 13:43:30,789 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:43:30,789 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:43:30,790 INFO L255 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 13:43:30,792 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:43:30,843 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:43:31,017 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:43:31,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981589430] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:43:31,018 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:43:31,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 4] total 6 [2024-11-13 13:43:31,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400984143] [2024-11-13 13:43:31,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:43:31,019 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 13:43:31,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:31,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 13:43:31,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 13:43:31,019 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-13 13:43:31,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:31,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:31,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-13 13:43:31,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:31,446 INFO L124 PetriNetUnfolderBase]: 1628/2879 cut-off events. [2024-11-13 13:43:31,446 INFO L125 PetriNetUnfolderBase]: For 2371/2371 co-relation queries the response was YES. [2024-11-13 13:43:31,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7071 conditions, 2879 events. 1628/2879 cut-off events. For 2371/2371 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 16089 event pairs, 590 based on Foata normal form. 33/2464 useless extension candidates. Maximal degree in co-relation 6030. Up to 1080 conditions per place. [2024-11-13 13:43:31,464 INFO L140 encePairwiseOnDemand]: 34/37 looper letters, 62 selfloop transitions, 14 changer transitions 0/79 dead transitions. [2024-11-13 13:43:31,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 79 transitions, 532 flow [2024-11-13 13:43:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 13:43:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-13 13:43:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2024-11-13 13:43:31,465 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5743243243243243 [2024-11-13 13:43:31,465 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 214 flow. Second operand 4 states and 85 transitions. [2024-11-13 13:43:31,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 79 transitions, 532 flow [2024-11-13 13:43:31,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 79 transitions, 512 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-11-13 13:43:31,474 INFO L231 Difference]: Finished difference. Result has 53 places, 51 transitions, 356 flow [2024-11-13 13:43:31,474 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=356, PETRI_PLACES=53, PETRI_TRANSITIONS=51} [2024-11-13 13:43:31,475 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 17 predicate places. [2024-11-13 13:43:31,475 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 51 transitions, 356 flow [2024-11-13 13:43:31,475 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 7 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:31,475 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:31,475 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:31,497 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 13:43:31,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 13:43:31,680 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:31,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:31,681 INFO L85 PathProgramCache]: Analyzing trace with hash -66056597, now seen corresponding path program 3 times [2024-11-13 13:43:31,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:31,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591301480] [2024-11-13 13:43:31,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:31,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:33,561 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:43:33,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:33,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591301480] [2024-11-13 13:43:33,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591301480] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:43:33,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114516661] [2024-11-13 13:43:33,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:43:33,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:33,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:33,566 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:43:33,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 13:43:33,659 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-13 13:43:33,659 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:43:33,662 INFO L255 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:43:33,664 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 13:43:33,772 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:43:33,807 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 13:43:33,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-13 13:43:33,843 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-13 13:43:33,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114516661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:43:33,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:43:33,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 4] total 12 [2024-11-13 13:43:33,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129869210] [2024-11-13 13:43:33,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:43:33,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 13:43:33,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:33,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 13:43:33,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-13 13:43:34,038 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-13 13:43:34,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 51 transitions, 356 flow. Second operand has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:34,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:34,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-13 13:43:34,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:35,631 INFO L124 PetriNetUnfolderBase]: 2506/4410 cut-off events. [2024-11-13 13:43:35,632 INFO L125 PetriNetUnfolderBase]: For 6272/6272 co-relation queries the response was YES. [2024-11-13 13:43:35,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11664 conditions, 4410 events. 2506/4410 cut-off events. For 6272/6272 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 26586 event pairs, 648 based on Foata normal form. 3/3727 useless extension candidates. Maximal degree in co-relation 8550. Up to 1338 conditions per place. [2024-11-13 13:43:35,648 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 80 selfloop transitions, 31 changer transitions 21/135 dead transitions. [2024-11-13 13:43:35,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 135 transitions, 975 flow [2024-11-13 13:43:35,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:43:35,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 13:43:35,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 210 transitions. [2024-11-13 13:43:35,650 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4365904365904366 [2024-11-13 13:43:35,651 INFO L175 Difference]: Start difference. First operand has 53 places, 51 transitions, 356 flow. Second operand 13 states and 210 transitions. [2024-11-13 13:43:35,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 135 transitions, 975 flow [2024-11-13 13:43:35,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 135 transitions, 927 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-11-13 13:43:35,670 INFO L231 Difference]: Finished difference. Result has 67 places, 64 transitions, 543 flow [2024-11-13 13:43:35,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=543, PETRI_PLACES=67, PETRI_TRANSITIONS=64} [2024-11-13 13:43:35,671 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2024-11-13 13:43:35,671 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 64 transitions, 543 flow [2024-11-13 13:43:35,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.307692307692308) internal successors, (147), 13 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:35,671 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:35,671 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:35,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 13:43:35,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:35,872 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:35,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:35,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1948938202, now seen corresponding path program 4 times [2024-11-13 13:43:35,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:35,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673074138] [2024-11-13 13:43:35,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:35,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:35,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:36,649 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:43:36,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:36,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673074138] [2024-11-13 13:43:36,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673074138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:43:36,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1781036910] [2024-11-13 13:43:36,650 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 13:43:36,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:36,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:36,652 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:43:36,653 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 13:43:36,757 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 13:43:36,757 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:43:36,759 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 13:43:36,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:36,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-13 13:43:37,101 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:43:37,101 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:43:37,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2024-11-13 13:43:37,614 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 13:43:37,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 56 treesize of output 45 [2024-11-13 13:43:37,767 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:43:37,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1781036910] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:43:37,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:43:37,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 24 [2024-11-13 13:43:37,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294194987] [2024-11-13 13:43:37,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:43:37,768 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 13:43:37,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:37,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 13:43:37,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=516, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:43:37,895 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-13 13:43:37,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 64 transitions, 543 flow. Second operand has 25 states, 25 states have (on average 11.32) internal successors, (283), 25 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:37,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:37,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-13 13:43:37,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:41,443 INFO L124 PetriNetUnfolderBase]: 5504/9603 cut-off events. [2024-11-13 13:43:41,444 INFO L125 PetriNetUnfolderBase]: For 17828/17828 co-relation queries the response was YES. [2024-11-13 13:43:41,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25850 conditions, 9603 events. 5504/9603 cut-off events. For 17828/17828 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 63129 event pairs, 1215 based on Foata normal form. 68/8182 useless extension candidates. Maximal degree in co-relation 16602. Up to 1725 conditions per place. [2024-11-13 13:43:41,490 INFO L140 encePairwiseOnDemand]: 30/37 looper letters, 207 selfloop transitions, 76 changer transitions 54/340 dead transitions. [2024-11-13 13:43:41,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 340 transitions, 2464 flow [2024-11-13 13:43:41,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 13:43:41,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-11-13 13:43:41,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 506 transitions. [2024-11-13 13:43:41,493 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.525987525987526 [2024-11-13 13:43:41,494 INFO L175 Difference]: Start difference. First operand has 67 places, 64 transitions, 543 flow. Second operand 26 states and 506 transitions. [2024-11-13 13:43:41,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 340 transitions, 2464 flow [2024-11-13 13:43:41,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 340 transitions, 2394 flow, removed 15 selfloop flow, removed 5 redundant places. [2024-11-13 13:43:41,523 INFO L231 Difference]: Finished difference. Result has 102 places, 112 transitions, 1433 flow [2024-11-13 13:43:41,524 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=502, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1433, PETRI_PLACES=102, PETRI_TRANSITIONS=112} [2024-11-13 13:43:41,524 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 66 predicate places. [2024-11-13 13:43:41,524 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 112 transitions, 1433 flow [2024-11-13 13:43:41,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.32) internal successors, (283), 25 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:41,525 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:41,525 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:41,545 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 13:43:41,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:41,729 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:41,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:41,730 INFO L85 PathProgramCache]: Analyzing trace with hash 701634677, now seen corresponding path program 5 times [2024-11-13 13:43:41,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:41,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994978362] [2024-11-13 13:43:41,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:41,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:42,681 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:43:42,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:42,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994978362] [2024-11-13 13:43:42,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994978362] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:43:42,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054841242] [2024-11-13 13:43:42,682 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 13:43:42,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:42,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:42,684 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:43:42,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 13:43:42,790 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-11-13 13:43:42,790 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:43:42,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 13:43:42,794 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:43:42,936 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:43:42,964 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 13:43:42,965 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-13 13:43:43,007 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 13:43:43,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054841242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:43:43,007 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:43:43,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 5] total 15 [2024-11-13 13:43:43,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225885070] [2024-11-13 13:43:43,008 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:43:43,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 13:43:43,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:43,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 13:43:43,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-13 13:43:43,059 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-13 13:43:43,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 112 transitions, 1433 flow. Second operand has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:43,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:43,060 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-13 13:43:43,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:44,743 INFO L124 PetriNetUnfolderBase]: 5973/10402 cut-off events. [2024-11-13 13:43:44,743 INFO L125 PetriNetUnfolderBase]: For 41918/41918 co-relation queries the response was YES. [2024-11-13 13:43:44,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31637 conditions, 10402 events. 5973/10402 cut-off events. For 41918/41918 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 69400 event pairs, 1721 based on Foata normal form. 7/8792 useless extension candidates. Maximal degree in co-relation 28712. Up to 2975 conditions per place. [2024-11-13 13:43:44,795 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 119 selfloop transitions, 67 changer transitions 45/234 dead transitions. [2024-11-13 13:43:44,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 234 transitions, 2341 flow [2024-11-13 13:43:44,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:43:44,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 13:43:44,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 284 transitions. [2024-11-13 13:43:44,797 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5117117117117117 [2024-11-13 13:43:44,797 INFO L175 Difference]: Start difference. First operand has 102 places, 112 transitions, 1433 flow. Second operand 15 states and 284 transitions. [2024-11-13 13:43:44,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 234 transitions, 2341 flow [2024-11-13 13:43:44,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 234 transitions, 2072 flow, removed 128 selfloop flow, removed 5 redundant places. [2024-11-13 13:43:44,931 INFO L231 Difference]: Finished difference. Result has 118 places, 121 transitions, 1540 flow [2024-11-13 13:43:44,931 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1170, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1540, PETRI_PLACES=118, PETRI_TRANSITIONS=121} [2024-11-13 13:43:44,932 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 82 predicate places. [2024-11-13 13:43:44,932 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 121 transitions, 1540 flow [2024-11-13 13:43:44,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.75) internal successors, (188), 16 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:44,932 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:44,933 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:44,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 13:43:45,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-13 13:43:45,137 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:45,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:45,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1281774772, now seen corresponding path program 6 times [2024-11-13 13:43:45,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:45,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188798591] [2024-11-13 13:43:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:45,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:45,392 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:43:45,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:45,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188798591] [2024-11-13 13:43:45,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188798591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:43:45,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79658870] [2024-11-13 13:43:45,393 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-13 13:43:45,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:45,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:45,395 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:43:45,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 13:43:45,494 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-13 13:43:45,494 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:43:45,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 13:43:45,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:45,557 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 11 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:43:45,557 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:43:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-13 13:43:45,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79658870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:43:45,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:43:45,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 6] total 14 [2024-11-13 13:43:45,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32404850] [2024-11-13 13:43:45,772 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:43:45,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-13 13:43:45,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:45,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-13 13:43:45,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-13 13:43:45,793 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-13 13:43:45,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 121 transitions, 1540 flow. Second operand has 15 states, 15 states have (on average 13.2) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:45,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:45,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-13 13:43:45,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:47,856 INFO L124 PetriNetUnfolderBase]: 8576/14925 cut-off events. [2024-11-13 13:43:47,856 INFO L125 PetriNetUnfolderBase]: For 71607/71607 co-relation queries the response was YES. [2024-11-13 13:43:47,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46529 conditions, 14925 events. 8576/14925 cut-off events. For 71607/71607 co-relation queries the response was YES. Maximal size of possible extension queue 421. Compared 105274 event pairs, 1800 based on Foata normal form. 77/12682 useless extension candidates. Maximal degree in co-relation 41365. Up to 2700 conditions per place. [2024-11-13 13:43:47,913 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 148 selfloop transitions, 109 changer transitions 6/266 dead transitions. [2024-11-13 13:43:47,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 266 transitions, 3245 flow [2024-11-13 13:43:47,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 13:43:47,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-13 13:43:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 258 transitions. [2024-11-13 13:43:47,915 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5363825363825364 [2024-11-13 13:43:47,915 INFO L175 Difference]: Start difference. First operand has 118 places, 121 transitions, 1540 flow. Second operand 13 states and 258 transitions. [2024-11-13 13:43:47,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 266 transitions, 3245 flow [2024-11-13 13:43:48,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 266 transitions, 3055 flow, removed 55 selfloop flow, removed 7 redundant places. [2024-11-13 13:43:48,092 INFO L231 Difference]: Finished difference. Result has 124 places, 156 transitions, 2289 flow [2024-11-13 13:43:48,093 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2289, PETRI_PLACES=124, PETRI_TRANSITIONS=156} [2024-11-13 13:43:48,094 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 88 predicate places. [2024-11-13 13:43:48,095 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 156 transitions, 2289 flow [2024-11-13 13:43:48,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.2) internal successors, (198), 15 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:48,095 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:48,095 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:48,117 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 13:43:48,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-13 13:43:48,296 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:48,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:48,296 INFO L85 PathProgramCache]: Analyzing trace with hash 2135384106, now seen corresponding path program 7 times [2024-11-13 13:43:48,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:48,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108022887] [2024-11-13 13:43:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:48,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 13:43:48,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:48,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108022887] [2024-11-13 13:43:48,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108022887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:43:48,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813771240] [2024-11-13 13:43:48,442 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-13 13:43:48,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:48,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:48,444 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:43:48,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 13:43:48,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:48,537 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 13:43:48,539 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:48,609 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 13:43:48,609 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:43:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-13 13:43:48,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813771240] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:43:48,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:43:48,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2024-11-13 13:43:48,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644777385] [2024-11-13 13:43:48,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:43:48,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 13:43:48,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:48,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 13:43:48,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-13 13:43:48,714 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-13 13:43:48,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 156 transitions, 2289 flow. Second operand has 12 states, 12 states have (on average 12.083333333333334) internal successors, (145), 12 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:48,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:48,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-13 13:43:48,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:50,383 INFO L124 PetriNetUnfolderBase]: 6687/11672 cut-off events. [2024-11-13 13:43:50,383 INFO L125 PetriNetUnfolderBase]: For 63989/63989 co-relation queries the response was YES. [2024-11-13 13:43:50,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37701 conditions, 11672 events. 6687/11672 cut-off events. For 63989/63989 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 81198 event pairs, 5874 based on Foata normal form. 22/9884 useless extension candidates. Maximal degree in co-relation 34567. Up to 11228 conditions per place. [2024-11-13 13:43:50,449 INFO L140 encePairwiseOnDemand]: 32/37 looper letters, 115 selfloop transitions, 11 changer transitions 30/159 dead transitions. [2024-11-13 13:43:50,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 159 transitions, 2282 flow [2024-11-13 13:43:50,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 13:43:50,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 13:43:50,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 112 transitions. [2024-11-13 13:43:50,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.43243243243243246 [2024-11-13 13:43:50,450 INFO L175 Difference]: Start difference. First operand has 124 places, 156 transitions, 2289 flow. Second operand 7 states and 112 transitions. [2024-11-13 13:43:50,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 159 transitions, 2282 flow [2024-11-13 13:43:50,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 159 transitions, 2003 flow, removed 120 selfloop flow, removed 7 redundant places. [2024-11-13 13:43:50,808 INFO L231 Difference]: Finished difference. Result has 123 places, 129 transitions, 1611 flow [2024-11-13 13:43:50,808 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1611, PETRI_PLACES=123, PETRI_TRANSITIONS=129} [2024-11-13 13:43:50,809 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 87 predicate places. [2024-11-13 13:43:50,809 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 129 transitions, 1611 flow [2024-11-13 13:43:50,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.083333333333334) internal successors, (145), 12 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:50,809 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:50,809 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:50,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 13:43:51,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-13 13:43:51,013 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:51,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:51,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1468634827, now seen corresponding path program 8 times [2024-11-13 13:43:51,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:51,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530134757] [2024-11-13 13:43:51,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:51,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:51,231 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:43:51,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530134757] [2024-11-13 13:43:51,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530134757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:43:51,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263288316] [2024-11-13 13:43:51,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 13:43:51,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:51,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:51,234 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:43:51,238 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 13:43:51,342 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 13:43:51,342 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:43:51,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:43:51,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:51,583 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 23 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:43:51,585 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:43:51,939 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-13 13:43:51,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263288316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:43:51,939 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:43:51,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2024-11-13 13:43:51,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835018191] [2024-11-13 13:43:51,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:43:51,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 13:43:51,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:51,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 13:43:51,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-11-13 13:43:51,981 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-13 13:43:51,982 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 129 transitions, 1611 flow. Second operand has 22 states, 22 states have (on average 11.772727272727273) internal successors, (259), 22 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:51,982 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:51,982 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-13 13:43:51,982 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:43:53,392 INFO L124 PetriNetUnfolderBase]: 4790/8381 cut-off events. [2024-11-13 13:43:53,393 INFO L125 PetriNetUnfolderBase]: For 23348/23348 co-relation queries the response was YES. [2024-11-13 13:43:53,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24497 conditions, 8381 events. 4790/8381 cut-off events. For 23348/23348 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 54965 event pairs, 1942 based on Foata normal form. 52/7133 useless extension candidates. Maximal degree in co-relation 24459. Up to 6755 conditions per place. [2024-11-13 13:43:53,427 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 81 selfloop transitions, 14 changer transitions 109/207 dead transitions. [2024-11-13 13:43:53,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 207 transitions, 1881 flow [2024-11-13 13:43:53,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 13:43:53,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-11-13 13:43:53,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 269 transitions. [2024-11-13 13:43:53,429 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4846846846846847 [2024-11-13 13:43:53,429 INFO L175 Difference]: Start difference. First operand has 123 places, 129 transitions, 1611 flow. Second operand 15 states and 269 transitions. [2024-11-13 13:43:53,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 207 transitions, 1881 flow [2024-11-13 13:43:53,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 207 transitions, 1819 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-11-13 13:43:53,512 INFO L231 Difference]: Finished difference. Result has 113 places, 91 transitions, 1092 flow [2024-11-13 13:43:53,512 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1092, PETRI_PLACES=113, PETRI_TRANSITIONS=91} [2024-11-13 13:43:53,512 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 77 predicate places. [2024-11-13 13:43:53,513 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 91 transitions, 1092 flow [2024-11-13 13:43:53,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.772727272727273) internal successors, (259), 22 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:53,513 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 13:43:53,513 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:43:53,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 13:43:53,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-13 13:43:53,717 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 11 more)] === [2024-11-13 13:43:53,717 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 13:43:53,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1905176500, now seen corresponding path program 9 times [2024-11-13 13:43:53,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 13:43:53,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623466450] [2024-11-13 13:43:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 13:43:53,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 13:43:53,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 13:43:54,390 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 13:43:54,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 13:43:54,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623466450] [2024-11-13 13:43:54,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623466450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 13:43:54,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934434934] [2024-11-13 13:43:54,391 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 13:43:54,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 13:43:54,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 13:43:54,393 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 13:43:54,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 13:43:54,785 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 13:43:54,786 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 13:43:54,788 INFO L255 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 13:43:54,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 13:43:55,157 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 13:43:55,157 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 13:43:55,480 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-13 13:43:55,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-13 13:43:55,683 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-13 13:43:55,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934434934] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 13:43:55,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 13:43:55,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 24 [2024-11-13 13:43:55,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711370573] [2024-11-13 13:43:55,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 13:43:55,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 13:43:55,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 13:43:55,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 13:43:55,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=506, Unknown=0, NotChecked=0, Total=600 [2024-11-13 13:43:55,724 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-11-13 13:43:55,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 91 transitions, 1092 flow. Second operand has 25 states, 25 states have (on average 11.96) internal successors, (299), 25 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:43:55,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 13:43:55,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-11-13 13:43:55,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 13:44:01,034 INFO L124 PetriNetUnfolderBase]: 10771/18504 cut-off events. [2024-11-13 13:44:01,034 INFO L125 PetriNetUnfolderBase]: For 48764/48764 co-relation queries the response was YES. [2024-11-13 13:44:01,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53376 conditions, 18504 events. 10771/18504 cut-off events. For 48764/48764 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 129947 event pairs, 1253 based on Foata normal form. 59/15707 useless extension candidates. Maximal degree in co-relation 53342. Up to 3350 conditions per place. [2024-11-13 13:44:01,092 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 0 selfloop transitions, 0 changer transitions 571/571 dead transitions. [2024-11-13 13:44:01,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 571 transitions, 4599 flow [2024-11-13 13:44:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 13:44:01,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-11-13 13:44:01,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 805 transitions. [2024-11-13 13:44:01,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5578655578655579 [2024-11-13 13:44:01,096 INFO L175 Difference]: Start difference. First operand has 113 places, 91 transitions, 1092 flow. Second operand 39 states and 805 transitions. [2024-11-13 13:44:01,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 571 transitions, 4599 flow [2024-11-13 13:44:01,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 571 transitions, 4239 flow, removed 111 selfloop flow, removed 16 redundant places. [2024-11-13 13:44:01,161 INFO L231 Difference]: Finished difference. Result has 118 places, 0 transitions, 0 flow [2024-11-13 13:44:01,161 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=0, PETRI_PLACES=118, PETRI_TRANSITIONS=0} [2024-11-13 13:44:01,162 INFO L277 CegarLoopForPetriNet]: 36 programPoint places, 82 predicate places. [2024-11-13 13:44:01,162 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 0 transitions, 0 flow [2024-11-13 13:44:01,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 11.96) internal successors, (299), 25 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 13:44:01,164 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 14 remaining) [2024-11-13 13:44:01,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 14 remaining) [2024-11-13 13:44:01,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 14 remaining) [2024-11-13 13:44:01,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 14 remaining) [2024-11-13 13:44:01,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 14 remaining) [2024-11-13 13:44:01,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 14 remaining) [2024-11-13 13:44:01,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (7 of 14 remaining) [2024-11-13 13:44:01,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (6 of 14 remaining) [2024-11-13 13:44:01,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 14 remaining) [2024-11-13 13:44:01,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 14 remaining) [2024-11-13 13:44:01,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 14 remaining) [2024-11-13 13:44:01,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 14 remaining) [2024-11-13 13:44:01,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 14 remaining) [2024-11-13 13:44:01,165 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 14 remaining) [2024-11-13 13:44:01,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 13:44:01,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-13 13:44:01,370 INFO L407 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 13:44:01,376 INFO L242 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-13 13:44:01,376 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 13:44:01,382 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 01:44:01 BasicIcfg [2024-11-13 13:44:01,383 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 13:44:01,383 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 13:44:01,384 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 13:44:01,384 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 13:44:01,384 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:43:22" (3/4) ... [2024-11-13 13:44:01,386 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-13 13:44:01,388 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-11-13 13:44:01,388 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-11-13 13:44:01,395 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 79 nodes and edges [2024-11-13 13:44:01,396 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2024-11-13 13:44:01,396 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-11-13 13:44:01,396 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-11-13 13:44:01,485 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 13:44:01,485 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/witness.yml [2024-11-13 13:44:01,485 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 13:44:01,486 INFO L158 Benchmark]: Toolchain (without parser) took 40068.43ms. Allocated memory was 117.4MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 93.1MB in the beginning and 759.2MB in the end (delta: -666.2MB). Peak memory consumption was 596.3MB. Max. memory is 16.1GB. [2024-11-13 13:44:01,486 INFO L158 Benchmark]: CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 73.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:44:01,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.57ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 81.3MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:44:01,487 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.01ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 79.9MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-13 13:44:01,487 INFO L158 Benchmark]: Boogie Preprocessor took 46.55ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 78.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:44:01,487 INFO L158 Benchmark]: RCFGBuilder took 701.07ms. Allocated memory is still 117.4MB. Free memory was 77.9MB in the beginning and 42.6MB in the end (delta: 35.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 13:44:01,488 INFO L158 Benchmark]: TraceAbstraction took 38854.96ms. Allocated memory was 117.4MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 42.0MB in the beginning and 761.4MB in the end (delta: -719.4MB). Peak memory consumption was 546.0MB. Max. memory is 16.1GB. [2024-11-13 13:44:01,488 INFO L158 Benchmark]: Witness Printer took 101.76ms. Allocated memory is still 1.4GB. Free memory was 761.4MB in the beginning and 759.2MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 13:44:01,489 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38ms. Allocated memory is still 117.4MB. Free memory is still 73.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 309.57ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 81.3MB in the end (delta: 11.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.01ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 79.9MB in the end (delta: 1.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.55ms. Allocated memory is still 117.4MB. Free memory was 79.9MB in the beginning and 78.1MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 701.07ms. Allocated memory is still 117.4MB. Free memory was 77.9MB in the beginning and 42.6MB in the end (delta: 35.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 38854.96ms. Allocated memory was 117.4MB in the beginning and 1.4GB in the end (delta: 1.3GB). Free memory was 42.0MB in the beginning and 761.4MB in the end (delta: -719.4MB). Peak memory consumption was 546.0MB. Max. memory is 16.1GB. * Witness Printer took 101.76ms. Allocated memory is still 1.4GB. Free memory was 761.4MB in the beginning and 759.2MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 70]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 51 locations, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 38.7s, OverallIterations: 17, TraceHistogramMax: 4, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 22.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2441 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2399 mSDsluCounter, 619 SdHoareTripleChecker+Invalid, 5.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 618 mSDsCounter, 167 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5888 IncrementalHoareTripleChecker+Invalid, 6055 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 167 mSolverCounterUnsat, 1 mSDtfsCounter, 5888 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 828 GetRequests, 557 SyntacticMatches, 1 SemanticMatches, 270 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1712 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2289occurred in iteration=14, InterpolantAutomatonStates: 179, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 712 NumberOfCodeBlocks, 706 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 996 ConstructedInterpolants, 20 QuantifiedInterpolants, 9207 SizeOfPredicates, 59 NumberOfNonLiveVariables, 1804 ConjunctsInSsa, 138 ConjunctsInUnsatCore, 37 InterpolantComputations, 7 PerfectInterpolantSequences, 302/637 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-13 13:44:01,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a54716ac-c0ea-478a-8c10-54c56db7c168/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE