./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 12:21:00,779 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:21:00,837 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 12:21:00,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:21:00,842 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:21:00,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:21:00,865 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:21:00,865 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:21:00,865 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:21:00,866 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:21:00,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:21:00,866 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:21:00,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:21:00,866 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:21:00,866 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:21:00,867 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:21:00,867 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:21:00,867 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:21:00,867 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:21:00,867 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:21:00,867 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 12:21:00,867 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 12:21:00,867 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 12:21:00,867 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:21:00,867 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 12:21:00,867 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:21:00,867 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:21:00,867 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:21:00,868 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:21:00,868 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:21:00,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:21:00,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:21:00,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:21:00,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:21:00,868 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:21:00,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:21:00,868 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:21:00,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:21:00,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:21:00,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:21:00,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:21:00,869 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:21:00,869 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:21:00,869 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:21:00,869 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:21:00,869 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:21:00,869 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:21:00,869 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_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe7fc3189e39cd6587b4d7d83621bd29f6e1c085e1b3af197b9abc1746b629ea [2024-12-02 12:21:01,098 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:21:01,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:21:01,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:21:01,109 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:21:01,109 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:21:01,110 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2024-12-02 12:21:03,836 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/data/506c744e0/89c7d6b1e062470faa626e5bfdebfb00/FLAG7b5a482de [2024-12-02 12:21:04,054 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:21:04,055 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/sv-benchmarks/c/weaver/popl20-nonblocking-cntr.wvr.c [2024-12-02 12:21:04,063 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/data/506c744e0/89c7d6b1e062470faa626e5bfdebfb00/FLAG7b5a482de [2024-12-02 12:21:04,080 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/data/506c744e0/89c7d6b1e062470faa626e5bfdebfb00 [2024-12-02 12:21:04,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:21:04,084 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:21:04,086 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:21:04,086 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:21:04,091 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:21:04,092 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,093 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@109069b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04, skipping insertion in model container [2024-12-02 12:21:04,093 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:21:04,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:21:04,289 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:21:04,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:21:04,322 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:21:04,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04 WrapperNode [2024-12-02 12:21:04,323 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:21:04,324 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:21:04,325 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:21:04,325 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:21:04,332 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,340 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,358 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 43 [2024-12-02 12:21:04,358 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:21:04,359 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:21:04,359 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:21:04,359 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:21:04,368 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,370 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,382 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-12-02 12:21:04,382 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,386 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,386 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,389 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,390 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,391 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,392 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:21:04,393 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:21:04,393 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:21:04,393 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:21:04,394 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04" (1/1) ... [2024-12-02 12:21:04,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:21:04,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:04,426 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:21:04,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:21:04,457 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:21:04,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-12-02 12:21:04,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-12-02 12:21:04,457 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-12-02 12:21:04,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-12-02 12:21:04,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 12:21:04,457 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-12-02 12:21:04,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-12-02 12:21:04,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:21:04,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:21:04,459 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 12:21:04,538 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:21:04,540 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:21:04,706 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 12:21:04,706 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:21:04,816 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:21:04,816 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 12:21:04,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:21:04 BoogieIcfgContainer [2024-12-02 12:21:04,816 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:21:04,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:21:04,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:21:04,824 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:21:04,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:21:04" (1/3) ... [2024-12-02 12:21:04,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef7dfcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:21:04, skipping insertion in model container [2024-12-02 12:21:04,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:21:04" (2/3) ... [2024-12-02 12:21:04,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ef7dfcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:21:04, skipping insertion in model container [2024-12-02 12:21:04,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:21:04" (3/3) ... [2024-12-02 12:21:04,827 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2024-12-02 12:21:04,844 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:21:04,846 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-nonblocking-cntr.wvr.c that has 3 procedures, 22 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-12-02 12:21:04,846 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 12:21:04,891 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-12-02 12:21:04,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-12-02 12:21:04,958 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-12-02 12:21:04,961 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 12:21:04,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 21 events. 2/21 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/17 useless extension candidates. Maximal degree in co-relation 14. Up to 2 conditions per place. [2024-12-02 12:21:04,964 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-12-02 12:21:04,967 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-12-02 12:21:04,976 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:21:04,986 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;@73c02eeb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:21:04,986 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-12-02 12:21:04,995 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 12:21:04,995 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-12-02 12:21:04,995 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-12-02 12:21:04,995 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:04,996 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:04,996 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:05,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:05,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1600270162, now seen corresponding path program 1 times [2024-12-02 12:21:05,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:05,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836988121] [2024-12-02 12:21:05,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:05,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:05,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:05,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:05,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836988121] [2024-12-02 12:21:05,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836988121] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:05,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:05,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:21:05,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499047497] [2024-12-02 12:21:05,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:05,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:21:05,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:05,283 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:21:05,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:21:05,297 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-12-02 12:21:05,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:05,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:05,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-12-02 12:21:05,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:21:05,393 INFO L124 PetriNetUnfolderBase]: 70/137 cut-off events. [2024-12-02 12:21:05,393 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-12-02 12:21:05,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283 conditions, 137 events. 70/137 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 426 event pairs, 31 based on Foata normal form. 9/142 useless extension candidates. Maximal degree in co-relation 252. Up to 86 conditions per place. [2024-12-02 12:21:05,395 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 20 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2024-12-02 12:21:05,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 113 flow [2024-12-02 12:21:05,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:21:05,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:21:05,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 49 transitions. [2024-12-02 12:21:05,405 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.532608695652174 [2024-12-02 12:21:05,407 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 4 states and 49 transitions. [2024-12-02 12:21:05,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 113 flow [2024-12-02 12:21:05,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 26 transitions, 103 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-12-02 12:21:05,414 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 54 flow [2024-12-02 12:21:05,417 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=54, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2024-12-02 12:21:05,421 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -2 predicate places. [2024-12-02 12:21:05,421 INFO L471 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 54 flow [2024-12-02 12:21:05,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:05,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:05,421 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:05,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 12:21:05,422 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:05,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:05,422 INFO L85 PathProgramCache]: Analyzing trace with hash 184256333, now seen corresponding path program 1 times [2024-12-02 12:21:05,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:05,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790728643] [2024-12-02 12:21:05,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:05,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:21:05,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:05,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790728643] [2024-12-02 12:21:05,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790728643] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:05,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:05,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:21:05,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969787425] [2024-12-02 12:21:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:05,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:21:05,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:05,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:21:05,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:21:05,541 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-12-02 12:21:05,541 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 54 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) [2024-12-02 12:21:05,541 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:05,541 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-12-02 12:21:05,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:21:05,637 INFO L124 PetriNetUnfolderBase]: 89/180 cut-off events. [2024-12-02 12:21:05,637 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2024-12-02 12:21:05,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 180 events. 89/180 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 618 event pairs, 49 based on Foata normal form. 13/188 useless extension candidates. Maximal degree in co-relation 87. Up to 124 conditions per place. [2024-12-02 12:21:05,639 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-12-02 12:21:05,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 27 transitions, 129 flow [2024-12-02 12:21:05,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:21:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:21:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 47 transitions. [2024-12-02 12:21:05,641 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5108695652173914 [2024-12-02 12:21:05,641 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 54 flow. Second operand 4 states and 47 transitions. [2024-12-02 12:21:05,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 27 transitions, 129 flow [2024-12-02 12:21:05,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 123 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:21:05,642 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-12-02 12:21:05,643 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=64, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2024-12-02 12:21:05,643 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-12-02 12:21:05,643 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-12-02 12:21:05,644 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) [2024-12-02 12:21:05,644 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:05,644 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:05,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 12:21:05,644 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:05,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:05,645 INFO L85 PathProgramCache]: Analyzing trace with hash 658132287, now seen corresponding path program 1 times [2024-12-02 12:21:05,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:05,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229827097] [2024-12-02 12:21:05,645 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:05,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:05,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:05,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229827097] [2024-12-02 12:21:05,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229827097] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:05,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838314152] [2024-12-02 12:21:05,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:05,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:05,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:05,782 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:05,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:21:05,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:05,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 12:21:05,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:05,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:05,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:21:06,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:06,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838314152] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:06,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:21:06,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [3, 3] total 5 [2024-12-02 12:21:06,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042458475] [2024-12-02 12:21:06,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:06,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:21:06,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:06,170 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:21:06,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:21:06,171 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-12-02 12:21:06,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:06,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:06,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-12-02 12:21:06,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:21:06,305 INFO L124 PetriNetUnfolderBase]: 153/301 cut-off events. [2024-12-02 12:21:06,305 INFO L125 PetriNetUnfolderBase]: For 141/141 co-relation queries the response was YES. [2024-12-02 12:21:06,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 763 conditions, 301 events. 153/301 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1129 event pairs, 23 based on Foata normal form. 1/293 useless extension candidates. Maximal degree in co-relation 236. Up to 97 conditions per place. [2024-12-02 12:21:06,308 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 35 selfloop transitions, 5 changer transitions 3/46 dead transitions. [2024-12-02 12:21:06,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 46 transitions, 238 flow [2024-12-02 12:21:06,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:21:06,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-12-02 12:21:06,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-12-02 12:21:06,311 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6847826086956522 [2024-12-02 12:21:06,311 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 4 states and 63 transitions. [2024-12-02 12:21:06,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 46 transitions, 238 flow [2024-12-02 12:21:06,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 46 transitions, 230 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 12:21:06,314 INFO L231 Difference]: Finished difference. Result has 28 places, 24 transitions, 98 flow [2024-12-02 12:21:06,314 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=98, PETRI_PLACES=28, PETRI_TRANSITIONS=24} [2024-12-02 12:21:06,315 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 3 predicate places. [2024-12-02 12:21:06,315 INFO L471 AbstractCegarLoop]: Abstraction has has 28 places, 24 transitions, 98 flow [2024-12-02 12:21:06,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:06,315 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:06,315 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:06,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-12-02 12:21:06,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:06,516 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:06,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:06,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1769464435, now seen corresponding path program 2 times [2024-12-02 12:21:06,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:06,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936036106] [2024-12-02 12:21:06,517 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:21:06,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:06,533 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:21:06,533 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:06,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:06,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936036106] [2024-12-02 12:21:06,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936036106] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:06,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799610872] [2024-12-02 12:21:06,627 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:21:06,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:06,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:06,629 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:06,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:21:06,682 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:21:06,682 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:06,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:21:06,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:06,773 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:06,773 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:21:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:06,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799610872] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:21:06,934 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:21:06,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2024-12-02 12:21:06,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407143493] [2024-12-02 12:21:06,934 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:21:06,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:21:06,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:06,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:21:06,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:21:06,963 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-12-02 12:21:06,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 24 transitions, 98 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:06,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:06,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-12-02 12:21:06,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:21:07,136 INFO L124 PetriNetUnfolderBase]: 286/530 cut-off events. [2024-12-02 12:21:07,136 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-12-02 12:21:07,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1479 conditions, 530 events. 286/530 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2173 event pairs, 42 based on Foata normal form. 18/547 useless extension candidates. Maximal degree in co-relation 507. Up to 242 conditions per place. [2024-12-02 12:21:07,140 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 40 selfloop transitions, 13 changer transitions 0/55 dead transitions. [2024-12-02 12:21:07,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 55 transitions, 335 flow [2024-12-02 12:21:07,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:21:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 12:21:07,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-12-02 12:21:07,141 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5072463768115942 [2024-12-02 12:21:07,142 INFO L175 Difference]: Start difference. First operand has 28 places, 24 transitions, 98 flow. Second operand 6 states and 70 transitions. [2024-12-02 12:21:07,142 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 55 transitions, 335 flow [2024-12-02 12:21:07,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 55 transitions, 335 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 12:21:07,145 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 219 flow [2024-12-02 12:21:07,145 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=219, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2024-12-02 12:21:07,145 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 12 predicate places. [2024-12-02 12:21:07,146 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 219 flow [2024-12-02 12:21:07,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:07,146 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:07,146 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:07,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:21:07,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:07,347 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:07,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:07,347 INFO L85 PathProgramCache]: Analyzing trace with hash -251739490, now seen corresponding path program 3 times [2024-12-02 12:21:07,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:07,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75083478] [2024-12-02 12:21:07,347 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:21:07,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:07,361 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 12:21:07,362 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:07,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:07,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75083478] [2024-12-02 12:21:07,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75083478] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:07,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021727008] [2024-12-02 12:21:07,498 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:21:07,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:07,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:07,501 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:07,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:21:07,556 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 12:21:07,556 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:07,557 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 12:21:07,559 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:07,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:21:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:07,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021727008] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:21:07,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:21:07,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 8] total 20 [2024-12-02 12:21:07,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625688830] [2024-12-02 12:21:07,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:21:07,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 12:21:07,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:07,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 12:21:07,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:21:07,935 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:21:07,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 219 flow. Second operand has 20 states, 20 states have (on average 6.6) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:07,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:07,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:21:07,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:21:08,993 INFO L124 PetriNetUnfolderBase]: 627/1078 cut-off events. [2024-12-02 12:21:08,994 INFO L125 PetriNetUnfolderBase]: For 1710/1710 co-relation queries the response was YES. [2024-12-02 12:21:08,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3640 conditions, 1078 events. 627/1078 cut-off events. For 1710/1710 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 4754 event pairs, 3 based on Foata normal form. 29/1107 useless extension candidates. Maximal degree in co-relation 2364. Up to 211 conditions per place. [2024-12-02 12:21:09,002 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 118 selfloop transitions, 97 changer transitions 23/239 dead transitions. [2024-12-02 12:21:09,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 239 transitions, 1673 flow [2024-12-02 12:21:09,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-12-02 12:21:09,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-12-02 12:21:09,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 359 transitions. [2024-12-02 12:21:09,006 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4107551487414188 [2024-12-02 12:21:09,006 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 219 flow. Second operand 38 states and 359 transitions. [2024-12-02 12:21:09,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 239 transitions, 1673 flow [2024-12-02 12:21:09,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 239 transitions, 1665 flow, removed 4 selfloop flow, removed 0 redundant places. [2024-12-02 12:21:09,019 INFO L231 Difference]: Finished difference. Result has 94 places, 114 transitions, 1096 flow [2024-12-02 12:21:09,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1096, PETRI_PLACES=94, PETRI_TRANSITIONS=114} [2024-12-02 12:21:09,020 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 69 predicate places. [2024-12-02 12:21:09,020 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 114 transitions, 1096 flow [2024-12-02 12:21:09,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.6) internal successors, (132), 20 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:09,020 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:09,020 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:09,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:21:09,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:09,221 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:09,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:09,221 INFO L85 PathProgramCache]: Analyzing trace with hash 706728402, now seen corresponding path program 4 times [2024-12-02 12:21:09,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:09,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018617088] [2024-12-02 12:21:09,221 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:21:09,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:09,230 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:21:09,231 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:09,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:09,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018617088] [2024-12-02 12:21:09,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018617088] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:09,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987157194] [2024-12-02 12:21:09,288 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:21:09,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:09,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:09,289 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:09,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:21:09,326 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:21:09,326 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:09,326 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 12:21:09,327 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:09,400 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:09,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:21:09,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:09,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987157194] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:21:09,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:21:09,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2024-12-02 12:21:09,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346247645] [2024-12-02 12:21:09,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:21:09,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:21:09,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:09,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:21:09,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:21:09,469 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:21:09,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 114 transitions, 1096 flow. Second operand has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:09,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:09,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:21:09,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:21:09,964 INFO L124 PetriNetUnfolderBase]: 889/1517 cut-off events. [2024-12-02 12:21:09,964 INFO L125 PetriNetUnfolderBase]: For 15497/15497 co-relation queries the response was YES. [2024-12-02 12:21:09,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8269 conditions, 1517 events. 889/1517 cut-off events. For 15497/15497 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 7194 event pairs, 65 based on Foata normal form. 71/1588 useless extension candidates. Maximal degree in co-relation 7185. Up to 391 conditions per place. [2024-12-02 12:21:09,980 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 129 selfloop transitions, 135 changer transitions 0/265 dead transitions. [2024-12-02 12:21:09,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 265 transitions, 3003 flow [2024-12-02 12:21:09,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 12:21:09,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-12-02 12:21:09,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 169 transitions. [2024-12-02 12:21:09,982 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4592391304347826 [2024-12-02 12:21:09,982 INFO L175 Difference]: Start difference. First operand has 94 places, 114 transitions, 1096 flow. Second operand 16 states and 169 transitions. [2024-12-02 12:21:09,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 265 transitions, 3003 flow [2024-12-02 12:21:10,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 265 transitions, 2778 flow, removed 105 selfloop flow, removed 4 redundant places. [2024-12-02 12:21:10,024 INFO L231 Difference]: Finished difference. Result has 115 places, 182 transitions, 2204 flow [2024-12-02 12:21:10,024 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=980, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2204, PETRI_PLACES=115, PETRI_TRANSITIONS=182} [2024-12-02 12:21:10,025 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 90 predicate places. [2024-12-02 12:21:10,025 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 182 transitions, 2204 flow [2024-12-02 12:21:10,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.7) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:10,025 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:10,025 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:10,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 12:21:10,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:10,226 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:10,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:10,226 INFO L85 PathProgramCache]: Analyzing trace with hash -710741524, now seen corresponding path program 5 times [2024-12-02 12:21:10,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:10,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418349313] [2024-12-02 12:21:10,227 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 12:21:10,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:10,238 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:21:10,238 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:10,336 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:10,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:10,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418349313] [2024-12-02 12:21:10,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418349313] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:10,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20502683] [2024-12-02 12:21:10,337 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 12:21:10,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:10,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:10,338 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:10,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:21:10,378 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:21:10,378 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:10,379 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:21:10,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:10,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:10,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:21:10,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:10,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20502683] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:21:10,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:21:10,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2024-12-02 12:21:10,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134612453] [2024-12-02 12:21:10,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:21:10,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 12:21:10,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:10,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 12:21:10,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:21:10,570 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:21:10,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 182 transitions, 2204 flow. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:10,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:10,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:21:10,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:21:11,483 INFO L124 PetriNetUnfolderBase]: 1375/2291 cut-off events. [2024-12-02 12:21:11,483 INFO L125 PetriNetUnfolderBase]: For 35625/35625 co-relation queries the response was YES. [2024-12-02 12:21:11,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15212 conditions, 2291 events. 1375/2291 cut-off events. For 35625/35625 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11704 event pairs, 93 based on Foata normal form. 22/2313 useless extension candidates. Maximal degree in co-relation 12171. Up to 474 conditions per place. [2024-12-02 12:21:11,500 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 202 selfloop transitions, 196 changer transitions 5/404 dead transitions. [2024-12-02 12:21:11,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 404 transitions, 5589 flow [2024-12-02 12:21:11,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 12:21:11,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-12-02 12:21:11,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 239 transitions. [2024-12-02 12:21:11,502 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4329710144927536 [2024-12-02 12:21:11,502 INFO L175 Difference]: Start difference. First operand has 115 places, 182 transitions, 2204 flow. Second operand 24 states and 239 transitions. [2024-12-02 12:21:11,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 404 transitions, 5589 flow [2024-12-02 12:21:11,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 404 transitions, 5379 flow, removed 105 selfloop flow, removed 0 redundant places. [2024-12-02 12:21:11,591 INFO L231 Difference]: Finished difference. Result has 146 places, 296 transitions, 4086 flow [2024-12-02 12:21:11,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=2072, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4086, PETRI_PLACES=146, PETRI_TRANSITIONS=296} [2024-12-02 12:21:11,592 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 121 predicate places. [2024-12-02 12:21:11,592 INFO L471 AbstractCegarLoop]: Abstraction has has 146 places, 296 transitions, 4086 flow [2024-12-02 12:21:11,592 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:11,592 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:11,593 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:11,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:21:11,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:11,793 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:11,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:11,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1786452680, now seen corresponding path program 6 times [2024-12-02 12:21:11,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:11,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656917728] [2024-12-02 12:21:11,794 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 12:21:11,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:11,823 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-12-02 12:21:11,823 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:11,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:11,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:11,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656917728] [2024-12-02 12:21:11,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656917728] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:11,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173131953] [2024-12-02 12:21:11,923 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 12:21:11,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:11,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:11,925 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:11,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:21:11,967 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-12-02 12:21:11,967 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:11,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:21:11,969 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:12,055 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:12,055 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:21:12,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:12,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173131953] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:21:12,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:21:12,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2024-12-02 12:21:12,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945275947] [2024-12-02 12:21:12,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:21:12,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 12:21:12,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:12,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 12:21:12,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:21:12,208 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:21:12,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 296 transitions, 4086 flow. Second operand has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:12,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:12,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:21:12,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:21:13,493 INFO L124 PetriNetUnfolderBase]: 1520/2542 cut-off events. [2024-12-02 12:21:13,493 INFO L125 PetriNetUnfolderBase]: For 50817/50817 co-relation queries the response was YES. [2024-12-02 12:21:13,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17856 conditions, 2542 events. 1520/2542 cut-off events. For 50817/50817 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 13114 event pairs, 40 based on Foata normal form. 86/2628 useless extension candidates. Maximal degree in co-relation 16508. Up to 494 conditions per place. [2024-12-02 12:21:13,516 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 183 selfloop transitions, 322 changer transitions 5/511 dead transitions. [2024-12-02 12:21:13,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 511 transitions, 7586 flow [2024-12-02 12:21:13,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 12:21:13,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-12-02 12:21:13,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 380 transitions. [2024-12-02 12:21:13,519 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4236343366778149 [2024-12-02 12:21:13,519 INFO L175 Difference]: Start difference. First operand has 146 places, 296 transitions, 4086 flow. Second operand 39 states and 380 transitions. [2024-12-02 12:21:13,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 511 transitions, 7586 flow [2024-12-02 12:21:13,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 511 transitions, 6912 flow, removed 321 selfloop flow, removed 4 redundant places. [2024-12-02 12:21:13,739 INFO L231 Difference]: Finished difference. Result has 205 places, 383 transitions, 6021 flow [2024-12-02 12:21:13,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=3473, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=6021, PETRI_PLACES=205, PETRI_TRANSITIONS=383} [2024-12-02 12:21:13,740 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 180 predicate places. [2024-12-02 12:21:13,740 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 383 transitions, 6021 flow [2024-12-02 12:21:13,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.25) internal successors, (125), 20 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:13,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:13,741 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:13,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 12:21:13,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:13,941 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:13,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:13,942 INFO L85 PathProgramCache]: Analyzing trace with hash -141176036, now seen corresponding path program 7 times [2024-12-02 12:21:13,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:13,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128859670] [2024-12-02 12:21:13,942 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 12:21:13,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:14,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:14,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:14,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128859670] [2024-12-02 12:21:14,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128859670] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:14,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54866738] [2024-12-02 12:21:14,106 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 12:21:14,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:14,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:14,108 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:14,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 12:21:14,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:14,157 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 12:21:14,158 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:14,286 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:21:14,391 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:14,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54866738] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:21:14,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:21:14,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2024-12-02 12:21:14,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886681491] [2024-12-02 12:21:14,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:21:14,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 12:21:14,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:14,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 12:21:14,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2024-12-02 12:21:14,395 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:21:14,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 383 transitions, 6021 flow. Second operand has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 23 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) [2024-12-02 12:21:14,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:14,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:21:14,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:21:16,013 INFO L124 PetriNetUnfolderBase]: 2749/4596 cut-off events. [2024-12-02 12:21:16,014 INFO L125 PetriNetUnfolderBase]: For 112715/112715 co-relation queries the response was YES. [2024-12-02 12:21:16,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36861 conditions, 4596 events. 2749/4596 cut-off events. For 112715/112715 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 26435 event pairs, 4 based on Foata normal form. 118/4714 useless extension candidates. Maximal degree in co-relation 36069. Up to 944 conditions per place. [2024-12-02 12:21:16,051 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 372 selfloop transitions, 590 changer transitions 2/965 dead transitions. [2024-12-02 12:21:16,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 965 transitions, 16620 flow [2024-12-02 12:21:16,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-12-02 12:21:16,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2024-12-02 12:21:16,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 431 transitions. [2024-12-02 12:21:16,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40737240075614367 [2024-12-02 12:21:16,054 INFO L175 Difference]: Start difference. First operand has 205 places, 383 transitions, 6021 flow. Second operand 46 states and 431 transitions. [2024-12-02 12:21:16,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 965 transitions, 16620 flow [2024-12-02 12:21:16,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 965 transitions, 15881 flow, removed 236 selfloop flow, removed 10 redundant places. [2024-12-02 12:21:16,545 INFO L231 Difference]: Finished difference. Result has 264 places, 735 transitions, 13564 flow [2024-12-02 12:21:16,545 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=5609, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=13564, PETRI_PLACES=264, PETRI_TRANSITIONS=735} [2024-12-02 12:21:16,546 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 239 predicate places. [2024-12-02 12:21:16,546 INFO L471 AbstractCegarLoop]: Abstraction has has 264 places, 735 transitions, 13564 flow [2024-12-02 12:21:16,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.304347826086956) internal successors, (145), 23 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) [2024-12-02 12:21:16,546 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:16,546 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:16,553 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 12:21:16,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:16,746 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:16,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:16,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1390002224, now seen corresponding path program 8 times [2024-12-02 12:21:16,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:16,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082797659] [2024-12-02 12:21:16,747 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:21:16,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:16,755 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:21:16,755 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:16,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:16,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:16,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082797659] [2024-12-02 12:21:16,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082797659] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:16,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383807254] [2024-12-02 12:21:16,846 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:21:16,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:16,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:16,848 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:16,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 12:21:16,892 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:21:16,892 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:16,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:21:16,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:16,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:16,992 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:21:17,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:17,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383807254] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:21:17,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:21:17,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2024-12-02 12:21:17,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020736132] [2024-12-02 12:21:17,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:21:17,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 12:21:17,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:17,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 12:21:17,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2024-12-02 12:21:17,144 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:21:17,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 735 transitions, 13564 flow. Second operand has 20 states, 20 states have (on average 6.35) internal successors, (127), 20 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:17,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:17,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:21:17,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:21:19,798 INFO L124 PetriNetUnfolderBase]: 3976/6570 cut-off events. [2024-12-02 12:21:19,799 INFO L125 PetriNetUnfolderBase]: For 258118/258118 co-relation queries the response was YES. [2024-12-02 12:21:19,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62148 conditions, 6570 events. 3976/6570 cut-off events. For 258118/258118 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 39773 event pairs, 123 based on Foata normal form. 36/6606 useless extension candidates. Maximal degree in co-relation 61379. Up to 1189 conditions per place. [2024-12-02 12:21:19,858 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 311 selfloop transitions, 1051 changer transitions 7/1370 dead transitions. [2024-12-02 12:21:19,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 1370 transitions, 28854 flow [2024-12-02 12:21:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-12-02 12:21:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2024-12-02 12:21:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 412 transitions. [2024-12-02 12:21:19,859 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39806763285024155 [2024-12-02 12:21:19,860 INFO L175 Difference]: Start difference. First operand has 264 places, 735 transitions, 13564 flow. Second operand 45 states and 412 transitions. [2024-12-02 12:21:19,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 1370 transitions, 28854 flow [2024-12-02 12:21:21,311 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 1370 transitions, 27545 flow, removed 641 selfloop flow, removed 3 redundant places. [2024-12-02 12:21:21,332 INFO L231 Difference]: Finished difference. Result has 325 places, 1229 transitions, 26266 flow [2024-12-02 12:21:21,333 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=13137, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=735, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=599, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=26266, PETRI_PLACES=325, PETRI_TRANSITIONS=1229} [2024-12-02 12:21:21,333 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 300 predicate places. [2024-12-02 12:21:21,334 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 1229 transitions, 26266 flow [2024-12-02 12:21:21,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.35) internal successors, (127), 20 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:21,334 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:21,334 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:21,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 12:21:21,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 12:21:21,535 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:21,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:21,535 INFO L85 PathProgramCache]: Analyzing trace with hash 565589266, now seen corresponding path program 9 times [2024-12-02 12:21:21,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:21,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471548018] [2024-12-02 12:21:21,536 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:21:21,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:21,544 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 12:21:21,544 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:21,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:21,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:21,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471548018] [2024-12-02 12:21:21,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471548018] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:21,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773506431] [2024-12-02 12:21:21,657 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:21:21,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:21,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:21,661 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:21,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 12:21:21,718 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 12:21:21,718 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:21,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:21:21,720 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:21,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:21,816 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:21:21,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:21,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773506431] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:21:21,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:21:21,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2024-12-02 12:21:21,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556032465] [2024-12-02 12:21:21,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:21:21,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-12-02 12:21:21,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:21,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-12-02 12:21:21,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2024-12-02 12:21:21,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:21:21,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 1229 transitions, 26266 flow. Second operand has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:21,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:21,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:21:21,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:21:25,360 INFO L124 PetriNetUnfolderBase]: 4629/7667 cut-off events. [2024-12-02 12:21:25,360 INFO L125 PetriNetUnfolderBase]: For 335320/335320 co-relation queries the response was YES. [2024-12-02 12:21:25,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78608 conditions, 7667 events. 4629/7667 cut-off events. For 335320/335320 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 47580 event pairs, 91 based on Foata normal form. 56/7723 useless extension candidates. Maximal degree in co-relation 78425. Up to 1394 conditions per place. [2024-12-02 12:21:25,460 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 369 selfloop transitions, 1214 changer transitions 2/1586 dead transitions. [2024-12-02 12:21:25,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 1586 transitions, 36554 flow [2024-12-02 12:21:25,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-12-02 12:21:25,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2024-12-02 12:21:25,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 412 transitions. [2024-12-02 12:21:25,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40711462450592883 [2024-12-02 12:21:25,462 INFO L175 Difference]: Start difference. First operand has 325 places, 1229 transitions, 26266 flow. Second operand 44 states and 412 transitions. [2024-12-02 12:21:25,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 1586 transitions, 36554 flow [2024-12-02 12:21:28,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 1586 transitions, 35233 flow, removed 478 selfloop flow, removed 11 redundant places. [2024-12-02 12:21:28,393 INFO L231 Difference]: Finished difference. Result has 370 places, 1443 transitions, 33866 flow [2024-12-02 12:21:28,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=25053, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1005, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=33866, PETRI_PLACES=370, PETRI_TRANSITIONS=1443} [2024-12-02 12:21:28,394 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 345 predicate places. [2024-12-02 12:21:28,394 INFO L471 AbstractCegarLoop]: Abstraction has has 370 places, 1443 transitions, 33866 flow [2024-12-02 12:21:28,394 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.222222222222222) internal successors, (112), 18 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:28,394 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:28,394 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:28,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 12:21:28,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:28,595 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:28,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:28,596 INFO L85 PathProgramCache]: Analyzing trace with hash 852146646, now seen corresponding path program 10 times [2024-12-02 12:21:28,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:28,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403179490] [2024-12-02 12:21:28,596 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:21:28,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:28,602 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:21:28,603 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:28,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:28,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:28,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403179490] [2024-12-02 12:21:28,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403179490] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:28,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851486644] [2024-12-02 12:21:28,646 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:21:28,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:28,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:28,648 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:28,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 12:21:28,685 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:21:28,685 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:28,686 INFO L256 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 12:21:28,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:28,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:28,764 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:21:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:28,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851486644] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:21:28,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:21:28,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 10 [2024-12-02 12:21:28,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670612394] [2024-12-02 12:21:28,801 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:21:28,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 12:21:28,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:28,802 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 12:21:28,802 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-12-02 12:21:28,804 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:21:28,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 1443 transitions, 33866 flow. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:28,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:28,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:21:28,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:21:32,317 INFO L124 PetriNetUnfolderBase]: 4629/7667 cut-off events. [2024-12-02 12:21:32,317 INFO L125 PetriNetUnfolderBase]: For 390412/390412 co-relation queries the response was YES. [2024-12-02 12:21:32,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82843 conditions, 7667 events. 4629/7667 cut-off events. For 390412/390412 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 47910 event pairs, 317 based on Foata normal form. 16/7683 useless extension candidates. Maximal degree in co-relation 82136. Up to 1780 conditions per place. [2024-12-02 12:21:32,428 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 836 selfloop transitions, 666 changer transitions 2/1505 dead transitions. [2024-12-02 12:21:32,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 1505 transitions, 38141 flow [2024-12-02 12:21:32,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:21:32,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 12:21:32,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-12-02 12:21:32,430 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.466403162055336 [2024-12-02 12:21:32,430 INFO L175 Difference]: Start difference. First operand has 370 places, 1443 transitions, 33866 flow. Second operand 11 states and 118 transitions. [2024-12-02 12:21:32,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 1505 transitions, 38141 flow [2024-12-02 12:21:36,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 1505 transitions, 37232 flow, removed 248 selfloop flow, removed 20 redundant places. [2024-12-02 12:21:36,902 INFO L231 Difference]: Finished difference. Result has 359 places, 1445 transitions, 34763 flow [2024-12-02 12:21:36,902 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=32899, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=656, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=778, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=34763, PETRI_PLACES=359, PETRI_TRANSITIONS=1445} [2024-12-02 12:21:36,903 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 334 predicate places. [2024-12-02 12:21:36,903 INFO L471 AbstractCegarLoop]: Abstraction has has 359 places, 1445 transitions, 34763 flow [2024-12-02 12:21:36,903 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 10 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:36,903 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:36,904 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:36,909 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 12:21:37,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 12:21:37,104 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:37,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:37,105 INFO L85 PathProgramCache]: Analyzing trace with hash 406554224, now seen corresponding path program 11 times [2024-12-02 12:21:37,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:37,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495896243] [2024-12-02 12:21:37,105 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 12:21:37,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:37,115 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 12:21:37,115 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:37,222 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:37,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:37,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495896243] [2024-12-02 12:21:37,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495896243] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:37,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579426226] [2024-12-02 12:21:37,223 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 12:21:37,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:37,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:37,225 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:37,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 12:21:37,272 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-12-02 12:21:37,272 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:37,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 12:21:37,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:37,380 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:21:37,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:37,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1579426226] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:21:37,481 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:21:37,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 21 [2024-12-02 12:21:37,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133612276] [2024-12-02 12:21:37,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:21:37,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 12:21:37,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:37,482 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 12:21:37,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=315, Unknown=0, NotChecked=0, Total=420 [2024-12-02 12:21:37,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:21:37,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 1445 transitions, 34763 flow. Second operand has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 21 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:37,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:37,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:21:37,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:21:41,823 INFO L124 PetriNetUnfolderBase]: 5087/8451 cut-off events. [2024-12-02 12:21:41,823 INFO L125 PetriNetUnfolderBase]: For 405691/405691 co-relation queries the response was YES. [2024-12-02 12:21:41,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91824 conditions, 8451 events. 5087/8451 cut-off events. For 405691/405691 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 53936 event pairs, 784 based on Foata normal form. 100/8551 useless extension candidates. Maximal degree in co-relation 91097. Up to 4051 conditions per place. [2024-12-02 12:21:41,911 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 860 selfloop transitions, 879 changer transitions 3/1743 dead transitions. [2024-12-02 12:21:41,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 1743 transitions, 44195 flow [2024-12-02 12:21:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 12:21:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-12-02 12:21:41,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 271 transitions. [2024-12-02 12:21:41,913 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4363929146537842 [2024-12-02 12:21:41,913 INFO L175 Difference]: Start difference. First operand has 359 places, 1445 transitions, 34763 flow. Second operand 27 states and 271 transitions. [2024-12-02 12:21:41,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 1743 transitions, 44195 flow [2024-12-02 12:21:47,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 1743 transitions, 42901 flow, removed 70 selfloop flow, removed 8 redundant places. [2024-12-02 12:21:47,141 INFO L231 Difference]: Finished difference. Result has 395 places, 1587 transitions, 40633 flow [2024-12-02 12:21:47,143 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=33649, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=749, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=667, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=40633, PETRI_PLACES=395, PETRI_TRANSITIONS=1587} [2024-12-02 12:21:47,143 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 370 predicate places. [2024-12-02 12:21:47,143 INFO L471 AbstractCegarLoop]: Abstraction has has 395 places, 1587 transitions, 40633 flow [2024-12-02 12:21:47,144 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 21 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:47,144 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:47,144 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:47,149 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 12:21:47,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 12:21:47,344 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:47,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:47,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1831603932, now seen corresponding path program 12 times [2024-12-02 12:21:47,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:47,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313074506] [2024-12-02 12:21:47,345 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 12:21:47,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:47,353 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 12:21:47,353 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:47,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:47,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313074506] [2024-12-02 12:21:47,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313074506] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:47,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916234346] [2024-12-02 12:21:47,445 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 12:21:47,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:47,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:47,447 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:47,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 12:21:47,494 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 12:21:47,494 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:21:47,495 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:21:47,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:47,603 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:47,603 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:21:47,685 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:21:47,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916234346] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:47,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:21:47,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 19 [2024-12-02 12:21:47,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649016929] [2024-12-02 12:21:47,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:47,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:21:47,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:47,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:21:47,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:21:47,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:21:47,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 1587 transitions, 40633 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:47,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:47,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:21:47,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:21:52,040 INFO L124 PetriNetUnfolderBase]: 5203/8614 cut-off events. [2024-12-02 12:21:52,040 INFO L125 PetriNetUnfolderBase]: For 471322/471322 co-relation queries the response was YES. [2024-12-02 12:21:52,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99924 conditions, 8614 events. 5203/8614 cut-off events. For 471322/471322 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 54872 event pairs, 1598 based on Foata normal form. 6/8620 useless extension candidates. Maximal degree in co-relation 99150. Up to 7771 conditions per place. [2024-12-02 12:21:52,149 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 1534 selfloop transitions, 130 changer transitions 6/1671 dead transitions. [2024-12-02 12:21:52,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 1671 transitions, 46183 flow [2024-12-02 12:21:52,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:21:52,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 12:21:52,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-12-02 12:21:52,150 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47282608695652173 [2024-12-02 12:21:52,150 INFO L175 Difference]: Start difference. First operand has 395 places, 1587 transitions, 40633 flow. Second operand 8 states and 87 transitions. [2024-12-02 12:21:52,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 1671 transitions, 46183 flow [2024-12-02 12:21:57,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 397 places, 1671 transitions, 45365 flow, removed 366 selfloop flow, removed 5 redundant places. [2024-12-02 12:21:57,902 INFO L231 Difference]: Finished difference. Result has 401 places, 1632 transitions, 41569 flow [2024-12-02 12:21:57,904 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=40019, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1467, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=41569, PETRI_PLACES=401, PETRI_TRANSITIONS=1632} [2024-12-02 12:21:57,904 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 376 predicate places. [2024-12-02 12:21:57,904 INFO L471 AbstractCegarLoop]: Abstraction has has 401 places, 1632 transitions, 41569 flow [2024-12-02 12:21:57,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:57,905 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:21:57,905 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:21:57,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 12:21:58,105 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 12:21:58,105 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:21:58,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:58,106 INFO L85 PathProgramCache]: Analyzing trace with hash 894434822, now seen corresponding path program 13 times [2024-12-02 12:21:58,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:21:58,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075128948] [2024-12-02 12:21:58,106 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 12:21:58,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:21:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:58,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:21:58,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:21:58,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075128948] [2024-12-02 12:21:58,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075128948] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:21:58,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:21:58,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:21:58,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259568549] [2024-12-02 12:21:58,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:21:58,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:21:58,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:21:58,211 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:21:58,211 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:21:58,226 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:21:58,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 1632 transitions, 41569 flow. Second operand has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:21:58,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:21:58,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:21:58,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:22:02,426 INFO L124 PetriNetUnfolderBase]: 5197/8613 cut-off events. [2024-12-02 12:22:02,426 INFO L125 PetriNetUnfolderBase]: For 431780/431780 co-relation queries the response was YES. [2024-12-02 12:22:02,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98097 conditions, 8613 events. 5197/8613 cut-off events. For 431780/431780 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 54531 event pairs, 224 based on Foata normal form. 2/8615 useless extension candidates. Maximal degree in co-relation 97634. Up to 8424 conditions per place. [2024-12-02 12:22:02,698 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 1619 selfloop transitions, 30 changer transitions 4/1654 dead transitions. [2024-12-02 12:22:02,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 1654 transitions, 45278 flow [2024-12-02 12:22:02,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:22:02,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 12:22:02,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-12-02 12:22:02,699 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.40096618357487923 [2024-12-02 12:22:02,699 INFO L175 Difference]: Start difference. First operand has 401 places, 1632 transitions, 41569 flow. Second operand 9 states and 83 transitions. [2024-12-02 12:22:02,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 1654 transitions, 45278 flow [2024-12-02 12:22:08,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1654 transitions, 45212 flow, removed 11 selfloop flow, removed 1 redundant places. [2024-12-02 12:22:08,985 INFO L231 Difference]: Finished difference. Result has 411 places, 1635 transitions, 41634 flow [2024-12-02 12:22:08,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=41503, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1602, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=41634, PETRI_PLACES=411, PETRI_TRANSITIONS=1635} [2024-12-02 12:22:08,986 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 386 predicate places. [2024-12-02 12:22:08,986 INFO L471 AbstractCegarLoop]: Abstraction has has 411 places, 1635 transitions, 41634 flow [2024-12-02 12:22:08,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.222222222222222) internal successors, (56), 9 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:22:08,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:22:08,986 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:22:08,987 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 12:22:08,987 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:22:08,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:22:08,987 INFO L85 PathProgramCache]: Analyzing trace with hash 356579244, now seen corresponding path program 14 times [2024-12-02 12:22:08,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:22:08,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630888393] [2024-12-02 12:22:08,988 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:22:08,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:22:08,993 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:22:08,993 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:22:09,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:22:09,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:22:09,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630888393] [2024-12-02 12:22:09,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630888393] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:22:09,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191819700] [2024-12-02 12:22:09,066 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:22:09,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:22:09,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:22:09,068 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:22:09,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 12:22:09,112 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:22:09,112 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:22:09,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:22:09,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:22:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:22:09,211 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:22:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:22:09,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191819700] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 12:22:09,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:22:09,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 19 [2024-12-02 12:22:09,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223279424] [2024-12-02 12:22:09,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:22:09,281 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:22:09,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:22:09,282 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:22:09,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:22:09,285 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:22:09,286 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 1635 transitions, 41634 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:22:09,286 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:22:09,286 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:22:09,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:22:14,107 INFO L124 PetriNetUnfolderBase]: 5624/9298 cut-off events. [2024-12-02 12:22:14,107 INFO L125 PetriNetUnfolderBase]: For 491509/491509 co-relation queries the response was YES. [2024-12-02 12:22:14,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107035 conditions, 9298 events. 5624/9298 cut-off events. For 491509/491509 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 59978 event pairs, 1532 based on Foata normal form. 12/9310 useless extension candidates. Maximal degree in co-relation 106838. Up to 7483 conditions per place. [2024-12-02 12:22:14,231 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 1530 selfloop transitions, 236 changer transitions 4/1771 dead transitions. [2024-12-02 12:22:14,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 1771 transitions, 48458 flow [2024-12-02 12:22:14,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 12:22:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 12:22:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-12-02 12:22:14,232 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5093167701863354 [2024-12-02 12:22:14,232 INFO L175 Difference]: Start difference. First operand has 411 places, 1635 transitions, 41634 flow. Second operand 7 states and 82 transitions. [2024-12-02 12:22:14,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 1771 transitions, 48458 flow [2024-12-02 12:22:21,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 1771 transitions, 48383 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-12-02 12:22:21,441 INFO L231 Difference]: Finished difference. Result has 411 places, 1697 transitions, 44135 flow [2024-12-02 12:22:21,442 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=41575, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1409, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=44135, PETRI_PLACES=411, PETRI_TRANSITIONS=1697} [2024-12-02 12:22:21,443 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 386 predicate places. [2024-12-02 12:22:21,443 INFO L471 AbstractCegarLoop]: Abstraction has has 411 places, 1697 transitions, 44135 flow [2024-12-02 12:22:21,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:22:21,443 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:22:21,443 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:22:21,453 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 12:22:21,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 12:22:21,644 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:22:21,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:22:21,644 INFO L85 PathProgramCache]: Analyzing trace with hash 183331552, now seen corresponding path program 15 times [2024-12-02 12:22:21,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:22:21,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734115425] [2024-12-02 12:22:21,644 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:22:21,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:22:21,650 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 12:22:21,650 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:22:21,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:22:21,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:22:21,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734115425] [2024-12-02 12:22:21,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734115425] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:22:21,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854553752] [2024-12-02 12:22:21,738 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:22:21,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:22:21,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:22:21,740 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:22:21,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 12:22:21,857 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-12-02 12:22:21,857 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:22:21,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:22:21,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:22:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:22:21,953 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:22:22,049 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:22:22,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [854553752] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 12:22:22,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:22:22,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 8] total 19 [2024-12-02 12:22:22,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588323948] [2024-12-02 12:22:22,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:22:22,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:22:22,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:22:22,051 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:22:22,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:22:22,056 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:22:22,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 1697 transitions, 44135 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:22:22,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:22:22,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:22:22,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:22:26,626 INFO L124 PetriNetUnfolderBase]: 5610/9297 cut-off events. [2024-12-02 12:22:26,627 INFO L125 PetriNetUnfolderBase]: For 514227/514227 co-relation queries the response was YES. [2024-12-02 12:22:26,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109144 conditions, 9297 events. 5610/9297 cut-off events. For 514227/514227 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 59959 event pairs, 807 based on Foata normal form. 26/9323 useless extension candidates. Maximal degree in co-relation 108674. Up to 4187 conditions per place. [2024-12-02 12:22:26,759 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 875 selfloop transitions, 969 changer transitions 1/1846 dead transitions. [2024-12-02 12:22:26,759 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 1846 transitions, 50703 flow [2024-12-02 12:22:26,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:22:26,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-12-02 12:22:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-12-02 12:22:26,760 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49407114624505927 [2024-12-02 12:22:26,760 INFO L175 Difference]: Start difference. First operand has 411 places, 1697 transitions, 44135 flow. Second operand 11 states and 125 transitions. [2024-12-02 12:22:26,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 1846 transitions, 50703 flow [2024-12-02 12:22:34,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 1846 transitions, 50590 flow, removed 27 selfloop flow, removed 2 redundant places. [2024-12-02 12:22:34,540 INFO L231 Difference]: Finished difference. Result has 423 places, 1731 transitions, 48551 flow [2024-12-02 12:22:34,541 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=43992, PETRI_DIFFERENCE_MINUEND_PLACES=409, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1696, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=942, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=746, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=48551, PETRI_PLACES=423, PETRI_TRANSITIONS=1731} [2024-12-02 12:22:34,541 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 398 predicate places. [2024-12-02 12:22:34,541 INFO L471 AbstractCegarLoop]: Abstraction has has 423 places, 1731 transitions, 48551 flow [2024-12-02 12:22:34,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:22:34,541 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:22:34,541 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:22:34,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 12:22:34,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 12:22:34,742 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:22:34,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:22:34,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1127105172, now seen corresponding path program 16 times [2024-12-02 12:22:34,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:22:34,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194184276] [2024-12-02 12:22:34,743 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:22:34,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:22:34,748 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:22:34,748 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:22:34,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:22:34,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:22:34,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194184276] [2024-12-02 12:22:34,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194184276] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:22:34,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592620597] [2024-12-02 12:22:34,891 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:22:34,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:22:34,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:22:34,894 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:22:34,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 12:22:34,947 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:22:34,947 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:22:34,948 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 12:22:34,949 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:22:34,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:22:34,995 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:22:35,266 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:22:35,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592620597] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:22:35,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:22:35,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4, 6] total 16 [2024-12-02 12:22:35,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652177633] [2024-12-02 12:22:35,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:22:35,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-12-02 12:22:35,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:22:35,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-12-02 12:22:35,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-12-02 12:22:35,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:22:35,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 1731 transitions, 48551 flow. Second operand has 17 states, 17 states have (on average 7.235294117647059) internal successors, (123), 17 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:22:35,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:22:35,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:22:35,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:22:46,693 INFO L124 PetriNetUnfolderBase]: 11940/19726 cut-off events. [2024-12-02 12:22:46,694 INFO L125 PetriNetUnfolderBase]: For 1311991/1311991 co-relation queries the response was YES. [2024-12-02 12:22:46,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247357 conditions, 19726 events. 11940/19726 cut-off events. For 1311991/1311991 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 139415 event pairs, 148 based on Foata normal form. 100/19826 useless extension candidates. Maximal degree in co-relation 246633. Up to 5685 conditions per place. [2024-12-02 12:22:47,019 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 1936 selfloop transitions, 2055 changer transitions 398/4390 dead transitions. [2024-12-02 12:22:47,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 4390 transitions, 129444 flow [2024-12-02 12:22:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-12-02 12:22:47,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-12-02 12:22:47,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 279 transitions. [2024-12-02 12:22:47,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5513833992094862 [2024-12-02 12:22:47,020 INFO L175 Difference]: Start difference. First operand has 423 places, 1731 transitions, 48551 flow. Second operand 22 states and 279 transitions. [2024-12-02 12:22:47,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 4390 transitions, 129444 flow [2024-12-02 12:23:07,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 435 places, 4390 transitions, 128213 flow, removed 263 selfloop flow, removed 9 redundant places. [2024-12-02 12:23:07,155 INFO L231 Difference]: Finished difference. Result has 456 places, 3086 transitions, 98589 flow [2024-12-02 12:23:07,156 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=48150, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1731, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=943, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=98589, PETRI_PLACES=456, PETRI_TRANSITIONS=3086} [2024-12-02 12:23:07,157 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 431 predicate places. [2024-12-02 12:23:07,157 INFO L471 AbstractCegarLoop]: Abstraction has has 456 places, 3086 transitions, 98589 flow [2024-12-02 12:23:07,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.235294117647059) internal successors, (123), 17 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:23:07,157 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:23:07,158 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:07,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 12:23:07,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 12:23:07,358 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:23:07,359 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:07,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1999995184, now seen corresponding path program 17 times [2024-12-02 12:23:07,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:23:07,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047158062] [2024-12-02 12:23:07,359 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 12:23:07,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:23:07,366 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:23:07,366 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:23:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:23:07,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:23:07,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047158062] [2024-12-02 12:23:07,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047158062] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:23:07,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008393267] [2024-12-02 12:23:07,434 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 12:23:07,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:23:07,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:23:07,436 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:23:07,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 12:23:07,480 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:23:07,481 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:23:07,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 12:23:07,483 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:23:07,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 12:23:07,597 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:23:07,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008393267] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:23:07,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:23:07,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 15 [2024-12-02 12:23:07,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756507198] [2024-12-02 12:23:07,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:23:07,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:23:07,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:23:07,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:23:07,598 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:23:07,604 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:23:07,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 3086 transitions, 98589 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:23:07,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:23:07,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:23:07,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:23:28,429 INFO L124 PetriNetUnfolderBase]: 12361/20570 cut-off events. [2024-12-02 12:23:28,430 INFO L125 PetriNetUnfolderBase]: For 1566980/1566980 co-relation queries the response was YES. [2024-12-02 12:23:28,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276360 conditions, 20570 events. 12361/20570 cut-off events. For 1566980/1566980 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 148040 event pairs, 440 based on Foata normal form. 10/20580 useless extension candidates. Maximal degree in co-relation 275601. Up to 18466 conditions per place. [2024-12-02 12:23:28,830 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 3134 selfloop transitions, 272 changer transitions 3/3410 dead transitions. [2024-12-02 12:23:28,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 3410 transitions, 114791 flow [2024-12-02 12:23:28,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:23:28,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 12:23:28,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-12-02 12:23:28,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45893719806763283 [2024-12-02 12:23:28,832 INFO L175 Difference]: Start difference. First operand has 456 places, 3086 transitions, 98589 flow. Second operand 9 states and 95 transitions. [2024-12-02 12:23:28,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 3410 transitions, 114791 flow [2024-12-02 12:23:54,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 3410 transitions, 113243 flow, removed 434 selfloop flow, removed 4 redundant places. [2024-12-02 12:23:54,450 INFO L231 Difference]: Finished difference. Result has 463 places, 3212 transitions, 102706 flow [2024-12-02 12:23:54,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=97327, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3086, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2818, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=102706, PETRI_PLACES=463, PETRI_TRANSITIONS=3212} [2024-12-02 12:23:54,452 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 438 predicate places. [2024-12-02 12:23:54,452 INFO L471 AbstractCegarLoop]: Abstraction has has 463 places, 3212 transitions, 102706 flow [2024-12-02 12:23:54,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:23:54,452 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:23:54,453 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:23:54,463 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 12:23:54,653 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:23:54,653 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:23:54,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:23:54,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1288891914, now seen corresponding path program 18 times [2024-12-02 12:23:54,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:23:54,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373380] [2024-12-02 12:23:54,654 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 12:23:54,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:23:54,662 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 12:23:54,662 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:23:54,797 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:23:54,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:23:54,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373380] [2024-12-02 12:23:54,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373380] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:23:54,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253803577] [2024-12-02 12:23:54,797 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 12:23:54,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:23:54,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:23:54,799 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:23:54,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 12:23:54,844 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-12-02 12:23:54,844 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:23:54,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 12:23:54,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:23:54,930 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 12:23:54,930 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:23:55,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:23:55,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253803577] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:23:55,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:23:55,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 21 [2024-12-02 12:23:55,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980328719] [2024-12-02 12:23:55,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:23:55,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 12:23:55,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:23:55,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 12:23:55,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2024-12-02 12:23:55,108 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:23:55,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 3212 transitions, 102706 flow. Second operand has 22 states, 22 states have (on average 6.363636363636363) internal successors, (140), 22 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:23:55,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:23:55,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:23:55,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:24:26,933 INFO L124 PetriNetUnfolderBase]: 18550/30733 cut-off events. [2024-12-02 12:24:26,933 INFO L125 PetriNetUnfolderBase]: For 2470645/2470645 co-relation queries the response was YES. [2024-12-02 12:24:27,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423555 conditions, 30733 events. 18550/30733 cut-off events. For 2470645/2470645 co-relation queries the response was YES. Maximal size of possible extension queue 1094. Compared 233013 event pairs, 198 based on Foata normal form. 189/30922 useless extension candidates. Maximal degree in co-relation 421593. Up to 9467 conditions per place. [2024-12-02 12:24:27,834 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 1865 selfloop transitions, 3614 changer transitions 4/5484 dead transitions. [2024-12-02 12:24:27,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 5484 transitions, 184265 flow [2024-12-02 12:24:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-12-02 12:24:27,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2024-12-02 12:24:27,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 300 transitions. [2024-12-02 12:24:27,836 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2024-12-02 12:24:27,836 INFO L175 Difference]: Start difference. First operand has 463 places, 3212 transitions, 102706 flow. Second operand 30 states and 300 transitions. [2024-12-02 12:24:27,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 5484 transitions, 184265 flow [2024-12-02 12:25:22,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 5484 transitions, 184141 flow, removed 48 selfloop flow, removed 3 redundant places. [2024-12-02 12:25:22,699 INFO L231 Difference]: Finished difference. Result has 510 places, 4945 transitions, 175393 flow [2024-12-02 12:25:22,701 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=102403, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2077, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=731, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=175393, PETRI_PLACES=510, PETRI_TRANSITIONS=4945} [2024-12-02 12:25:22,701 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 485 predicate places. [2024-12-02 12:25:22,701 INFO L471 AbstractCegarLoop]: Abstraction has has 510 places, 4945 transitions, 175393 flow [2024-12-02 12:25:22,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 6.363636363636363) internal successors, (140), 22 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:25:22,701 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:25:22,702 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:25:22,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-12-02 12:25:22,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:25:22,902 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:25:22,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:25:22,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1462139606, now seen corresponding path program 19 times [2024-12-02 12:25:22,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:25:22,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422485107] [2024-12-02 12:25:22,903 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 12:25:22,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:25:22,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:25:23,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 12:25:23,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:25:23,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422485107] [2024-12-02 12:25:23,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422485107] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:25:23,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:25:23,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 12:25:23,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527394652] [2024-12-02 12:25:23,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:25:23,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:25:23,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:25:23,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:25:23,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 12:25:23,024 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:25:23,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 4945 transitions, 175393 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:25:23,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:25:23,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:25:23,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:26:17,295 INFO L124 PetriNetUnfolderBase]: 18542/30707 cut-off events. [2024-12-02 12:26:17,295 INFO L125 PetriNetUnfolderBase]: For 2904840/2904840 co-relation queries the response was YES. [2024-12-02 12:26:17,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461495 conditions, 30707 events. 18542/30707 cut-off events. For 2904840/2904840 co-relation queries the response was YES. Maximal size of possible extension queue 1099. Compared 232932 event pairs, 592 based on Foata normal form. 2/30709 useless extension candidates. Maximal degree in co-relation 459552. Up to 29907 conditions per place. [2024-12-02 12:26:18,046 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 4891 selfloop transitions, 104 changer transitions 2/4998 dead transitions. [2024-12-02 12:26:18,046 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 518 places, 4998 transitions, 186574 flow [2024-12-02 12:26:18,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:26:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 12:26:18,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-12-02 12:26:18,047 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2024-12-02 12:26:18,047 INFO L175 Difference]: Start difference. First operand has 510 places, 4945 transitions, 175393 flow. Second operand 9 states and 90 transitions. [2024-12-02 12:26:18,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 518 places, 4998 transitions, 186574 flow [2024-12-02 12:27:24,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 4998 transitions, 185106 flow, removed 567 selfloop flow, removed 7 redundant places. [2024-12-02 12:27:24,988 INFO L231 Difference]: Finished difference. Result has 513 places, 4943 transitions, 174222 flow [2024-12-02 12:27:24,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=173932, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4943, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4839, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=174222, PETRI_PLACES=513, PETRI_TRANSITIONS=4943} [2024-12-02 12:27:24,991 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 488 predicate places. [2024-12-02 12:27:24,991 INFO L471 AbstractCegarLoop]: Abstraction has has 513 places, 4943 transitions, 174222 flow [2024-12-02 12:27:24,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:27:24,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:27:24,992 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:27:24,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-12-02 12:27:24,992 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:27:24,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:27:24,993 INFO L85 PathProgramCache]: Analyzing trace with hash -726043570, now seen corresponding path program 20 times [2024-12-02 12:27:24,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:27:24,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335990416] [2024-12-02 12:27:24,993 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:27:24,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:27:25,000 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:27:25,000 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:27:25,114 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:27:25,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:27:25,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335990416] [2024-12-02 12:27:25,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335990416] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:27:25,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732718154] [2024-12-02 12:27:25,115 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:27:25,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:27:25,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:27:25,117 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:27:25,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 12:27:25,167 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:27:25,167 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:27:25,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 12:27:25,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:27:25,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 12:27:25,266 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:27:25,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732718154] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:27:25,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 12:27:25,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 15 [2024-12-02 12:27:25,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998353697] [2024-12-02 12:27:25,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:27:25,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-12-02 12:27:25,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:27:25,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-12-02 12:27:25,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-12-02 12:27:25,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:27:25,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 513 places, 4943 transitions, 174222 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:27:25,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:27:25,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:27:25,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:28:15,843 INFO L124 PetriNetUnfolderBase]: 18532/30677 cut-off events. [2024-12-02 12:28:15,843 INFO L125 PetriNetUnfolderBase]: For 2718978/2718978 co-relation queries the response was YES. [2024-12-02 12:28:16,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451554 conditions, 30677 events. 18532/30677 cut-off events. For 2718978/2718978 co-relation queries the response was YES. Maximal size of possible extension queue 1099. Compared 232476 event pairs, 594 based on Foata normal form. 4/30681 useless extension candidates. Maximal degree in co-relation 449611. Up to 28894 conditions per place. [2024-12-02 12:28:16,639 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 4778 selfloop transitions, 253 changer transitions 3/5035 dead transitions. [2024-12-02 12:28:16,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 5035 transitions, 186448 flow [2024-12-02 12:28:16,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 12:28:16,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 12:28:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-12-02 12:28:16,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4492753623188406 [2024-12-02 12:28:16,640 INFO L175 Difference]: Start difference. First operand has 513 places, 4943 transitions, 174222 flow. Second operand 9 states and 93 transitions. [2024-12-02 12:28:16,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 5035 transitions, 186448 flow [2024-12-02 12:29:23,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 5035 transitions, 186296 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-12-02 12:29:23,780 INFO L231 Difference]: Finished difference. Result has 512 places, 4937 transitions, 174387 flow [2024-12-02 12:29:23,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=173943, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4939, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=174387, PETRI_PLACES=512, PETRI_TRANSITIONS=4937} [2024-12-02 12:29:23,783 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 487 predicate places. [2024-12-02 12:29:23,783 INFO L471 AbstractCegarLoop]: Abstraction has has 512 places, 4937 transitions, 174387 flow [2024-12-02 12:29:23,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:23,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:29:23,783 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:29:23,790 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-12-02 12:29:23,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 12:29:23,984 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:29:23,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:29:23,985 INFO L85 PathProgramCache]: Analyzing trace with hash -510512498, now seen corresponding path program 21 times [2024-12-02 12:29:23,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:29:23,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934038575] [2024-12-02 12:29:23,985 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:29:23,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:29:23,996 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-12-02 12:29:23,996 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:29:24,114 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:29:24,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:29:24,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934038575] [2024-12-02 12:29:24,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934038575] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:29:24,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887856606] [2024-12-02 12:29:24,115 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 12:29:24,115 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:29:24,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:29:24,116 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:29:24,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 12:29:24,149 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-12-02 12:29:24,149 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:29:24,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 12:29:24,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:29:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:29:24,263 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:29:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:29:24,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887856606] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:29:24,429 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:29:24,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-12-02 12:29:24,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908750377] [2024-12-02 12:29:24,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:29:24,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 12:29:24,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:29:24,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 12:29:24,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2024-12-02 12:29:24,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:29:24,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 512 places, 4937 transitions, 174387 flow. Second operand has 24 states, 24 states have (on average 6.375) internal successors, (153), 24 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:29:24,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:29:24,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:29:24,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:30:24,521 INFO L124 PetriNetUnfolderBase]: 19997/33131 cut-off events. [2024-12-02 12:30:24,521 INFO L125 PetriNetUnfolderBase]: For 3049921/3049921 co-relation queries the response was YES. [2024-12-02 12:30:25,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490810 conditions, 33131 events. 19997/33131 cut-off events. For 3049921/3049921 co-relation queries the response was YES. Maximal size of possible extension queue 1210. Compared 254890 event pairs, 222 based on Foata normal form. 252/33383 useless extension candidates. Maximal degree in co-relation 490619. Up to 16172 conditions per place. [2024-12-02 12:30:25,207 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 2214 selfloop transitions, 3330 changer transitions 15/5560 dead transitions. [2024-12-02 12:30:25,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 5560 transitions, 205050 flow [2024-12-02 12:30:25,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 12:30:25,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-12-02 12:30:25,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 237 transitions. [2024-12-02 12:30:25,209 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44801512287334594 [2024-12-02 12:30:25,209 INFO L175 Difference]: Start difference. First operand has 512 places, 4937 transitions, 174387 flow. Second operand 23 states and 237 transitions. [2024-12-02 12:30:25,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 5560 transitions, 205050 flow [2024-12-02 12:31:39,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 5560 transitions, 204420 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-12-02 12:31:39,844 INFO L231 Difference]: Finished difference. Result has 536 places, 5201 transitions, 197428 flow [2024-12-02 12:31:39,846 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=173757, PETRI_DIFFERENCE_MINUEND_PLACES=501, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4937, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3067, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=197428, PETRI_PLACES=536, PETRI_TRANSITIONS=5201} [2024-12-02 12:31:39,846 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 511 predicate places. [2024-12-02 12:31:39,846 INFO L471 AbstractCegarLoop]: Abstraction has has 536 places, 5201 transitions, 197428 flow [2024-12-02 12:31:39,847 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 6.375) internal successors, (153), 24 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:31:39,847 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:31:39,847 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:31:39,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-12-02 12:31:40,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-12-02 12:31:40,047 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:31:40,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:31:40,048 INFO L85 PathProgramCache]: Analyzing trace with hash -708138376, now seen corresponding path program 22 times [2024-12-02 12:31:40,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:31:40,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587714607] [2024-12-02 12:31:40,048 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:31:40,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:31:40,053 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:31:40,053 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:31:40,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:31:40,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:31:40,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587714607] [2024-12-02 12:31:40,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587714607] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:31:40,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085945925] [2024-12-02 12:31:40,128 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 12:31:40,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:31:40,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:31:40,130 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:31:40,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 12:31:40,167 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 12:31:40,167 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:31:40,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:31:40,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:31:40,259 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:31:40,259 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:31:40,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:31:40,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085945925] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:31:40,353 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:31:40,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 18 [2024-12-02 12:31:40,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484904116] [2024-12-02 12:31:40,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:31:40,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-12-02 12:31:40,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:31:40,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-12-02 12:31:40,354 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-12-02 12:31:40,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:31:40,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 536 places, 5201 transitions, 197428 flow. Second operand has 19 states, 19 states have (on average 6.421052631578948) internal successors, (122), 19 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:31:40,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:31:40,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:31:40,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 12:32:47,608 INFO L124 PetriNetUnfolderBase]: 23633/39107 cut-off events. [2024-12-02 12:32:47,608 INFO L125 PetriNetUnfolderBase]: For 4187004/4187004 co-relation queries the response was YES. [2024-12-02 12:32:48,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617393 conditions, 39107 events. 23633/39107 cut-off events. For 4187004/4187004 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 307673 event pairs, 257 based on Foata normal form. 245/39352 useless extension candidates. Maximal degree in co-relation 617192. Up to 15400 conditions per place. [2024-12-02 12:32:48,641 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 2306 selfloop transitions, 4123 changer transitions 4/6434 dead transitions. [2024-12-02 12:32:48,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 573 places, 6434 transitions, 255021 flow [2024-12-02 12:32:48,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-12-02 12:32:48,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-12-02 12:32:48,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 375 transitions. [2024-12-02 12:32:48,643 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4290617848970252 [2024-12-02 12:32:48,643 INFO L175 Difference]: Start difference. First operand has 536 places, 5201 transitions, 197428 flow. Second operand 38 states and 375 transitions. [2024-12-02 12:32:48,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 573 places, 6434 transitions, 255021 flow [2024-12-02 12:34:43,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 566 places, 6434 transitions, 250408 flow, removed 246 selfloop flow, removed 7 redundant places. [2024-12-02 12:34:43,794 INFO L231 Difference]: Finished difference. Result has 593 places, 6042 transitions, 243222 flow [2024-12-02 12:34:43,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=193549, PETRI_DIFFERENCE_MINUEND_PLACES=529, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3391, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1685, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=243222, PETRI_PLACES=593, PETRI_TRANSITIONS=6042} [2024-12-02 12:34:43,797 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 568 predicate places. [2024-12-02 12:34:43,797 INFO L471 AbstractCegarLoop]: Abstraction has has 593 places, 6042 transitions, 243222 flow [2024-12-02 12:34:43,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 6.421052631578948) internal successors, (122), 19 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:34:43,797 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 12:34:43,797 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:34:43,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 12:34:43,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59893500-9e4d-4e99-963b-7176b0694b53/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-12-02 12:34:43,998 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-12-02 12:34:43,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:34:43,999 INFO L85 PathProgramCache]: Analyzing trace with hash -534890684, now seen corresponding path program 23 times [2024-12-02 12:34:43,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 12:34:43,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249575917] [2024-12-02 12:34:43,999 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 12:34:43,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 12:34:44,003 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:34:44,003 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:34:44,067 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 12:34:44,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 12:34:44,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249575917] [2024-12-02 12:34:44,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249575917] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:34:44,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:34:44,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 12:34:44,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942591565] [2024-12-02 12:34:44,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:34:44,067 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:34:44,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 12:34:44,068 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:34:44,068 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:34:44,069 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-12-02 12:34:44,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 593 places, 6042 transitions, 243222 flow. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 12:34:44,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 12:34:44,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-12-02 12:34:44,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand