./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC --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 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:54:02,895 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:54:02,966 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-23 22:54:02,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:54:02,973 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:54:03,003 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:54:03,004 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:54:03,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:54:03,005 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:54:03,005 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:54:03,005 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:54:03,005 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:54:03,006 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:54:03,006 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:54:03,006 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:54:03,006 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:54:03,007 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:54:03,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:54:03,010 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:54:03,011 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:54:03,011 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-23 22:54:03,011 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-23 22:54:03,011 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-23 22:54:03,011 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:54:03,011 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 22:54:03,011 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 22:54:03,012 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:54:03,012 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:54:03,012 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:54:03,012 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:54:03,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:54:03,012 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:54:03,012 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:54:03,012 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:54:03,012 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:54:03,012 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:54:03,013 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:54:03,013 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:54:03,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:54:03,013 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:54:03,013 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:54:03,013 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:54:03,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:54:03,013 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:54:03,013 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:54:03,015 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:54:03,015 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:54:03,015 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_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC 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 -> 87e1a1d3acb3ee9b7a4a97eb7b14df31d5b38b7566b1218cea0dabfe5ec8ddbd [2024-11-23 22:54:03,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:54:03,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:54:03,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:54:03,373 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:54:03,374 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:54:03,375 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-11-23 22:54:06,982 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/data/6431975c7/5fabb46c6a31477d8ddd85b4366fe8cb/FLAG3e625fb82 [2024-11-23 22:54:07,298 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:54:07,299 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/sv-benchmarks/c/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2024-11-23 22:54:07,309 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/data/6431975c7/5fabb46c6a31477d8ddd85b4366fe8cb/FLAG3e625fb82 [2024-11-23 22:54:07,559 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/data/6431975c7/5fabb46c6a31477d8ddd85b4366fe8cb [2024-11-23 22:54:07,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:54:07,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:54:07,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:54:07,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:54:07,572 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:54:07,573 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:07,574 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f691684 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07, skipping insertion in model container [2024-11-23 22:54:07,574 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:07,602 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:54:07,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:54:07,835 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:54:07,869 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:54:07,903 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:54:07,904 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07 WrapperNode [2024-11-23 22:54:07,904 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:54:07,906 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:54:07,908 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:54:07,908 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:54:07,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:07,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:07,952 INFO L138 Inliner]: procedures = 20, calls = 15, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 46 [2024-11-23 22:54:07,952 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:54:07,953 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:54:07,953 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:54:07,953 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:54:07,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:07,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:07,969 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:07,993 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-23 22:54:07,993 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:07,993 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:08,002 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:08,006 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:08,013 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:08,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:08,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:08,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:54:08,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:54:08,021 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:54:08,023 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:54:08,025 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07" (1/1) ... [2024-11-23 22:54:08,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:54:08,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:54:08,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:54:08,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:54:08,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:54:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 22:54:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 22:54:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 22:54:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 22:54:08,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:54:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 22:54:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 22:54:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:54:08,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:54:08,115 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-23 22:54:08,240 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:54:08,243 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:54:08,450 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 22:54:08,450 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:54:08,691 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:54:08,691 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-23 22:54:08,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:54:08 BoogieIcfgContainer [2024-11-23 22:54:08,691 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:54:08,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:54:08,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:54:08,703 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:54:08,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:54:07" (1/3) ... [2024-11-23 22:54:08,704 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45776bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:54:08, skipping insertion in model container [2024-11-23 22:54:08,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:54:07" (2/3) ... [2024-11-23 22:54:08,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45776bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:54:08, skipping insertion in model container [2024-11-23 22:54:08,707 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:54:08" (3/3) ... [2024-11-23 22:54:08,708 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2024-11-23 22:54:08,729 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:54:08,731 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-nonblocking-counter-alt2.wvr.c that has 3 procedures, 22 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-23 22:54:08,731 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 22:54:08,809 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-23 22:54:08,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 28 places, 23 transitions, 60 flow [2024-11-23 22:54:08,887 INFO L124 PetriNetUnfolderBase]: 2/21 cut-off events. [2024-11-23 22:54:08,890 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 22:54:08,893 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 20 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. [2024-11-23 22:54:08,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 28 places, 23 transitions, 60 flow [2024-11-23 22:54:08,898 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 52 flow [2024-11-23 22:54:08,911 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:54:08,929 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;@3bb2fad0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:54:08,930 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-23 22:54:08,957 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 22:54:08,958 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2024-11-23 22:54:08,958 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-23 22:54:08,958 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:54:08,959 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:08,959 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:54:08,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:08,970 INFO L85 PathProgramCache]: Analyzing trace with hash -138867584, now seen corresponding path program 1 times [2024-11-23 22:54:08,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:08,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500823539] [2024-11-23 22:54:08,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:08,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:09,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:09,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:09,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500823539] [2024-11-23 22:54:09,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500823539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:09,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:54:09,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 22:54:09,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776058829] [2024-11-23 22:54:09,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:09,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:54:09,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:09,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:54:09,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:54:09,541 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-23 22:54:09,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:09,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:54:09,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-23 22:54:09,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:54:09,700 INFO L124 PetriNetUnfolderBase]: 73/148 cut-off events. [2024-11-23 22:54:09,701 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-23 22:54:09,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 148 events. 73/148 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 437 event pairs, 22 based on Foata normal form. 2/149 useless extension candidates. Maximal degree in co-relation 256. Up to 74 conditions per place. [2024-11-23 22:54:09,707 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 20 selfloop transitions, 2 changer transitions 3/28 dead transitions. [2024-11-23 22:54:09,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 28 transitions, 127 flow [2024-11-23 22:54:09,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:54:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 22:54:09,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 45 transitions. [2024-11-23 22:54:09,723 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6521739130434783 [2024-11-23 22:54:09,725 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 52 flow. Second operand 3 states and 45 transitions. [2024-11-23 22:54:09,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 28 transitions, 127 flow [2024-11-23 22:54:09,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-23 22:54:09,734 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 52 flow [2024-11-23 22:54:09,737 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=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2024-11-23 22:54:09,742 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -3 predicate places. [2024-11-23 22:54:09,742 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 52 flow [2024-11-23 22:54:09,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:09,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:54:09,742 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:09,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:54:09,743 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:54:09,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:09,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2128979061, now seen corresponding path program 1 times [2024-11-23 22:54:09,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:09,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919812774] [2024-11-23 22:54:09,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:09,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:54:09,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:09,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919812774] [2024-11-23 22:54:09,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919812774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:09,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:54:09,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:54:09,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263458915] [2024-11-23 22:54:09,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:09,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:54:09,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:09,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:54:09,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:54:09,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-23 22:54:09,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 19 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:09,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:54:09,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-23 22:54:09,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:54:10,103 INFO L124 PetriNetUnfolderBase]: 142/260 cut-off events. [2024-11-23 22:54:10,104 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-23 22:54:10,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536 conditions, 260 events. 142/260 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 868 event pairs, 81 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 277. Up to 179 conditions per place. [2024-11-23 22:54:10,107 INFO L140 encePairwiseOnDemand]: 19/23 looper letters, 21 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-11-23 22:54:10,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 27 transitions, 117 flow [2024-11-23 22:54:10,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:54:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:54:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 45 transitions. [2024-11-23 22:54:10,111 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4891304347826087 [2024-11-23 22:54:10,111 INFO L175 Difference]: Start difference. First operand has 22 places, 19 transitions, 52 flow. Second operand 4 states and 45 transitions. [2024-11-23 22:54:10,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 27 transitions, 117 flow [2024-11-23 22:54:10,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 27 transitions, 115 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 22:54:10,113 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 64 flow [2024-11-23 22:54:10,113 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} [2024-11-23 22:54:10,117 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 0 predicate places. [2024-11-23 22:54:10,117 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 64 flow [2024-11-23 22:54:10,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:10,118 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:54:10,118 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:10,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:54:10,118 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:54:10,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:10,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1995828491, now seen corresponding path program 1 times [2024-11-23 22:54:10,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:10,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131259466] [2024-11-23 22:54:10,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:10,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:10,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:10,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131259466] [2024-11-23 22:54:10,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131259466] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:54:10,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760596037] [2024-11-23 22:54:10,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:54:10,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:10,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:54:10,789 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:54:10,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:54:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:10,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:54:10,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:54:11,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:11,098 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:54:11,492 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:11,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1760596037] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:54:11,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:54:11,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 12 [2024-11-23 22:54:11,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326556499] [2024-11-23 22:54:11,492 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:54:11,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:54:11,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:11,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:54:11,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:54:11,505 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 22:54:11,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 64 flow. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:11,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:54:11,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 22:54:11,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:54:12,332 INFO L124 PetriNetUnfolderBase]: 402/697 cut-off events. [2024-11-23 22:54:12,332 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2024-11-23 22:54:12,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 697 events. 402/697 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2879 event pairs, 5 based on Foata normal form. 2/645 useless extension candidates. Maximal degree in co-relation 598. Up to 184 conditions per place. [2024-11-23 22:54:12,339 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 77 selfloop transitions, 17 changer transitions 10/105 dead transitions. [2024-11-23 22:54:12,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 105 transitions, 522 flow [2024-11-23 22:54:12,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:54:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:54:12,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-11-23 22:54:12,344 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5810276679841897 [2024-11-23 22:54:12,344 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 64 flow. Second operand 11 states and 147 transitions. [2024-11-23 22:54:12,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 105 transitions, 522 flow [2024-11-23 22:54:12,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 105 transitions, 504 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-11-23 22:54:12,351 INFO L231 Difference]: Finished difference. Result has 41 places, 34 transitions, 197 flow [2024-11-23 22:54:12,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=197, PETRI_PLACES=41, PETRI_TRANSITIONS=34} [2024-11-23 22:54:12,354 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 16 predicate places. [2024-11-23 22:54:12,354 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 34 transitions, 197 flow [2024-11-23 22:54:12,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:12,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:54:12,354 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:12,367 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-23 22:54:12,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:12,559 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:54:12,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:12,560 INFO L85 PathProgramCache]: Analyzing trace with hash 2144615075, now seen corresponding path program 2 times [2024-11-23 22:54:12,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:12,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655891653] [2024-11-23 22:54:12,560 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:54:12,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:12,584 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:54:12,585 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:54:12,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:12,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655891653] [2024-11-23 22:54:12,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655891653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:54:12,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831072562] [2024-11-23 22:54:12,814 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:54:12,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:12,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:54:12,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:54:12,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:54:12,896 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:54:12,896 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:12,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:54:12,899 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:54:12,976 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:54:12,976 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:54:12,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831072562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:12,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:54:12,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-23 22:54:12,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725334605] [2024-11-23 22:54:12,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:12,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:54:12,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:12,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:54:12,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:54:12,993 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 22:54:12,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 34 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:12,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:54:12,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 22:54:12,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:54:13,176 INFO L124 PetriNetUnfolderBase]: 396/687 cut-off events. [2024-11-23 22:54:13,177 INFO L125 PetriNetUnfolderBase]: For 803/803 co-relation queries the response was YES. [2024-11-23 22:54:13,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2110 conditions, 687 events. 396/687 cut-off events. For 803/803 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2811 event pairs, 122 based on Foata normal form. 6/693 useless extension candidates. Maximal degree in co-relation 1965. Up to 605 conditions per place. [2024-11-23 22:54:13,186 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 43 selfloop transitions, 7 changer transitions 0/51 dead transitions. [2024-11-23 22:54:13,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 51 transitions, 368 flow [2024-11-23 22:54:13,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:54:13,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 22:54:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 55 transitions. [2024-11-23 22:54:13,188 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-23 22:54:13,188 INFO L175 Difference]: Start difference. First operand has 41 places, 34 transitions, 197 flow. Second operand 5 states and 55 transitions. [2024-11-23 22:54:13,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 51 transitions, 368 flow [2024-11-23 22:54:13,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 340 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-23 22:54:13,211 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 229 flow [2024-11-23 22:54:13,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=229, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2024-11-23 22:54:13,214 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 20 predicate places. [2024-11-23 22:54:13,214 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 229 flow [2024-11-23 22:54:13,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:13,215 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:54:13,215 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:13,225 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 22:54:13,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:13,416 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:54:13,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:13,417 INFO L85 PathProgramCache]: Analyzing trace with hash 843543681, now seen corresponding path program 3 times [2024-11-23 22:54:13,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:13,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238898008] [2024-11-23 22:54:13,417 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:54:13,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:13,437 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:54:13,437 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:13,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:13,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:13,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238898008] [2024-11-23 22:54:13,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238898008] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:54:13,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357816056] [2024-11-23 22:54:13,761 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:54:13,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:13,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:54:13,770 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:54:13,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 22:54:13,859 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:54:13,860 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:13,866 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 22:54:13,869 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:54:14,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:54:14,156 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:54:14,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357816056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:54:14,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:54:14,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 13 [2024-11-23 22:54:14,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983354967] [2024-11-23 22:54:14,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:54:14,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-23 22:54:14,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:14,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-23 22:54:14,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:54:14,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 22:54:14,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 229 flow. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:14,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:54:14,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 22:54:14,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:54:14,552 INFO L124 PetriNetUnfolderBase]: 478/825 cut-off events. [2024-11-23 22:54:14,553 INFO L125 PetriNetUnfolderBase]: For 1135/1135 co-relation queries the response was YES. [2024-11-23 22:54:14,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2758 conditions, 825 events. 478/825 cut-off events. For 1135/1135 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3605 event pairs, 120 based on Foata normal form. 11/836 useless extension candidates. Maximal degree in co-relation 2610. Up to 633 conditions per place. [2024-11-23 22:54:14,561 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 62 selfloop transitions, 19 changer transitions 6/88 dead transitions. [2024-11-23 22:54:14,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 88 transitions, 667 flow [2024-11-23 22:54:14,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:54:14,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 22:54:14,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-11-23 22:54:14,563 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2024-11-23 22:54:14,563 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 229 flow. Second operand 9 states and 96 transitions. [2024-11-23 22:54:14,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 88 transitions, 667 flow [2024-11-23 22:54:14,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 88 transitions, 656 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-23 22:54:14,579 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 394 flow [2024-11-23 22:54:14,579 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=394, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2024-11-23 22:54:14,582 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 32 predicate places. [2024-11-23 22:54:14,583 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 394 flow [2024-11-23 22:54:14,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:14,584 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:54:14,584 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:14,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 22:54:14,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:14,785 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:54:14,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:14,786 INFO L85 PathProgramCache]: Analyzing trace with hash 470700177, now seen corresponding path program 4 times [2024-11-23 22:54:14,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:14,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71632193] [2024-11-23 22:54:14,786 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:54:14,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:14,802 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:54:14,802 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:14,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:54:14,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:14,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71632193] [2024-11-23 22:54:14,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71632193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:54:14,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886070368] [2024-11-23 22:54:14,994 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:54:14,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:14,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:54:14,997 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:54:15,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 22:54:15,069 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:54:15,070 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:15,071 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 22:54:15,073 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:54:15,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:15,244 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:54:15,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:54:15,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886070368] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:54:15,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:54:15,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2024-11-23 22:54:15,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91961690] [2024-11-23 22:54:15,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:54:15,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:54:15,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:15,556 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:54:15,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:54:15,562 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 22:54:15,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 394 flow. Second operand has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:15,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:54:15,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 22:54:15,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:54:15,901 INFO L124 PetriNetUnfolderBase]: 501/860 cut-off events. [2024-11-23 22:54:15,902 INFO L125 PetriNetUnfolderBase]: For 2559/2559 co-relation queries the response was YES. [2024-11-23 22:54:15,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3489 conditions, 860 events. 501/860 cut-off events. For 2559/2559 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 3697 event pairs, 61 based on Foata normal form. 18/878 useless extension candidates. Maximal degree in co-relation 3329. Up to 381 conditions per place. [2024-11-23 22:54:15,917 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 59 selfloop transitions, 23 changer transitions 0/83 dead transitions. [2024-11-23 22:54:15,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 83 transitions, 727 flow [2024-11-23 22:54:15,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 22:54:15,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-23 22:54:15,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-11-23 22:54:15,919 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4927536231884058 [2024-11-23 22:54:15,919 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 394 flow. Second operand 6 states and 68 transitions. [2024-11-23 22:54:15,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 83 transitions, 727 flow [2024-11-23 22:54:15,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 710 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-23 22:54:15,932 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 514 flow [2024-11-23 22:54:15,933 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=514, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2024-11-23 22:54:15,934 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 35 predicate places. [2024-11-23 22:54:15,935 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 514 flow [2024-11-23 22:54:15,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.615384615384615) internal successors, (99), 13 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:15,936 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:54:15,936 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:15,946 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 22:54:16,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-23 22:54:16,137 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:54:16,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:16,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1153719172, now seen corresponding path program 5 times [2024-11-23 22:54:16,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:16,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696360216] [2024-11-23 22:54:16,138 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 22:54:16,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:16,160 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:54:16,160 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:16,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:16,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696360216] [2024-11-23 22:54:16,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696360216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:54:16,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768773253] [2024-11-23 22:54:16,442 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 22:54:16,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:16,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:54:16,445 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:54:16,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 22:54:16,520 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:54:16,520 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:16,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:54:16,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:54:16,736 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:16,736 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:54:17,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:17,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768773253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:54:17,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:54:17,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-23 22:54:17,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911335882] [2024-11-23 22:54:17,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:54:17,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:54:17,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:17,099 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:54:17,099 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:54:17,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-23 22:54:17,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 514 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:17,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:54:17,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-23 22:54:17,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:54:18,470 INFO L124 PetriNetUnfolderBase]: 807/1422 cut-off events. [2024-11-23 22:54:18,470 INFO L125 PetriNetUnfolderBase]: For 5418/5438 co-relation queries the response was YES. [2024-11-23 22:54:18,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6227 conditions, 1422 events. 807/1422 cut-off events. For 5418/5438 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6982 event pairs, 13 based on Foata normal form. 38/1460 useless extension candidates. Maximal degree in co-relation 6036. Up to 365 conditions per place. [2024-11-23 22:54:18,490 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 93 selfloop transitions, 107 changer transitions 16/229 dead transitions. [2024-11-23 22:54:18,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 229 transitions, 2227 flow [2024-11-23 22:54:18,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-23 22:54:18,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-11-23 22:54:18,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 265 transitions. [2024-11-23 22:54:18,493 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48007246376811596 [2024-11-23 22:54:18,493 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 514 flow. Second operand 24 states and 265 transitions. [2024-11-23 22:54:18,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 229 transitions, 2227 flow [2024-11-23 22:54:18,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 229 transitions, 2117 flow, removed 49 selfloop flow, removed 2 redundant places. [2024-11-23 22:54:18,525 INFO L231 Difference]: Finished difference. Result has 93 places, 148 transitions, 1627 flow [2024-11-23 22:54:18,527 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=479, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1627, PETRI_PLACES=93, PETRI_TRANSITIONS=148} [2024-11-23 22:54:18,528 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 68 predicate places. [2024-11-23 22:54:18,528 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 148 transitions, 1627 flow [2024-11-23 22:54:18,529 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:18,529 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:54:18,529 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:18,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-23 22:54:18,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-23 22:54:18,730 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:54:18,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:18,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1288638458, now seen corresponding path program 6 times [2024-11-23 22:54:18,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:18,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382188067] [2024-11-23 22:54:18,731 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 22:54:18,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:18,760 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-23 22:54:18,760 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:19,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:19,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382188067] [2024-11-23 22:54:19,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382188067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:54:19,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46197962] [2024-11-23 22:54:19,154 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 22:54:19,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:19,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:54:19,159 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:54:19,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 22:54:19,232 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-23 22:54:19,233 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:19,234 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:54:19,236 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:54:19,438 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:19,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:54:19,811 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:19,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46197962] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:54:19,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:54:19,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 19 [2024-11-23 22:54:19,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334298019] [2024-11-23 22:54:19,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:54:19,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 22:54:19,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:19,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 22:54:19,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:54:19,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-23 22:54:19,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 148 transitions, 1627 flow. Second operand has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:19,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:54:19,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-23 22:54:19,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:54:21,045 INFO L124 PetriNetUnfolderBase]: 1153/2032 cut-off events. [2024-11-23 22:54:21,045 INFO L125 PetriNetUnfolderBase]: For 14946/14966 co-relation queries the response was YES. [2024-11-23 22:54:21,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11383 conditions, 2032 events. 1153/2032 cut-off events. For 14946/14966 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10978 event pairs, 35 based on Foata normal form. 18/2046 useless extension candidates. Maximal degree in co-relation 11174. Up to 500 conditions per place. [2024-11-23 22:54:21,070 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 117 selfloop transitions, 227 changer transitions 7/364 dead transitions. [2024-11-23 22:54:21,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 364 transitions, 4918 flow [2024-11-23 22:54:21,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-23 22:54:21,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-23 22:54:21,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 187 transitions. [2024-11-23 22:54:21,072 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4279176201372998 [2024-11-23 22:54:21,072 INFO L175 Difference]: Start difference. First operand has 93 places, 148 transitions, 1627 flow. Second operand 19 states and 187 transitions. [2024-11-23 22:54:21,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 364 transitions, 4918 flow [2024-11-23 22:54:21,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 364 transitions, 4415 flow, removed 241 selfloop flow, removed 3 redundant places. [2024-11-23 22:54:21,214 INFO L231 Difference]: Finished difference. Result has 119 places, 301 transitions, 4149 flow [2024-11-23 22:54:21,214 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4149, PETRI_PLACES=119, PETRI_TRANSITIONS=301} [2024-11-23 22:54:21,215 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 94 predicate places. [2024-11-23 22:54:21,215 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 301 transitions, 4149 flow [2024-11-23 22:54:21,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 19 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:21,216 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:54:21,216 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:21,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 22:54:21,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-23 22:54:21,420 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:54:21,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:21,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1053282720, now seen corresponding path program 7 times [2024-11-23 22:54:21,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:21,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382727080] [2024-11-23 22:54:21,422 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 22:54:21,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:21,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:21,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382727080] [2024-11-23 22:54:21,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382727080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:54:21,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495731528] [2024-11-23 22:54:21,732 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 22:54:21,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:21,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:54:21,735 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:54:21,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 22:54:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:54:21,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:54:21,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:54:21,973 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:21,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:54:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:22,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495731528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:54:22,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:54:22,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 17 [2024-11-23 22:54:22,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014387009] [2024-11-23 22:54:22,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:54:22,247 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 22:54:22,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:22,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 22:54:22,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:54:22,276 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 22:54:22,277 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 301 transitions, 4149 flow. Second operand has 17 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 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) [2024-11-23 22:54:22,277 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:54:22,277 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 22:54:22,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:54:24,959 INFO L124 PetriNetUnfolderBase]: 2234/3711 cut-off events. [2024-11-23 22:54:24,959 INFO L125 PetriNetUnfolderBase]: For 45593/45593 co-relation queries the response was YES. [2024-11-23 22:54:24,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24125 conditions, 3711 events. 2234/3711 cut-off events. For 45593/45593 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 20649 event pairs, 44 based on Foata normal form. 60/3771 useless extension candidates. Maximal degree in co-relation 23867. Up to 866 conditions per place. [2024-11-23 22:54:25,018 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 261 selfloop transitions, 475 changer transitions 6/743 dead transitions. [2024-11-23 22:54:25,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 743 transitions, 11533 flow [2024-11-23 22:54:25,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-23 22:54:25,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-23 22:54:25,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 371 transitions. [2024-11-23 22:54:25,022 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43595769682726204 [2024-11-23 22:54:25,022 INFO L175 Difference]: Start difference. First operand has 119 places, 301 transitions, 4149 flow. Second operand 37 states and 371 transitions. [2024-11-23 22:54:25,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 743 transitions, 11533 flow [2024-11-23 22:54:25,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 743 transitions, 10986 flow, removed 273 selfloop flow, removed 1 redundant places. [2024-11-23 22:54:25,352 INFO L231 Difference]: Finished difference. Result has 182 places, 638 transitions, 10789 flow [2024-11-23 22:54:25,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=3992, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=10789, PETRI_PLACES=182, PETRI_TRANSITIONS=638} [2024-11-23 22:54:25,354 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 157 predicate places. [2024-11-23 22:54:25,354 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 638 transitions, 10789 flow [2024-11-23 22:54:25,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.588235294117647) internal successors, (112), 17 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) [2024-11-23 22:54:25,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:54:25,355 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:25,366 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 22:54:25,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:25,556 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:54:25,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:25,557 INFO L85 PathProgramCache]: Analyzing trace with hash -730455652, now seen corresponding path program 8 times [2024-11-23 22:54:25,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:25,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631332697] [2024-11-23 22:54:25,558 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:54:25,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:25,584 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:54:25,584 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:25,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:25,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631332697] [2024-11-23 22:54:25,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631332697] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:54:25,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308895221] [2024-11-23 22:54:25,985 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:54:25,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:25,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:54:25,988 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:54:25,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 22:54:26,060 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:54:26,061 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:26,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:54:26,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:54:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:26,249 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:54:26,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:26,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308895221] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:54:26,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:54:26,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2024-11-23 22:54:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124015082] [2024-11-23 22:54:26,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:54:26,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:54:26,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:26,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:54:26,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:54:26,542 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-23 22:54:26,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 638 transitions, 10789 flow. Second operand has 16 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:26,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:54:26,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-23 22:54:26,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:54:30,007 INFO L124 PetriNetUnfolderBase]: 2420/4222 cut-off events. [2024-11-23 22:54:30,007 INFO L125 PetriNetUnfolderBase]: For 83646/83650 co-relation queries the response was YES. [2024-11-23 22:54:30,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32249 conditions, 4222 events. 2420/4222 cut-off events. For 83646/83650 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 26007 event pairs, 51 based on Foata normal form. 46/4256 useless extension candidates. Maximal degree in co-relation 31908. Up to 979 conditions per place. [2024-11-23 22:54:30,099 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 227 selfloop transitions, 676 changer transitions 7/936 dead transitions. [2024-11-23 22:54:30,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 936 transitions, 16870 flow [2024-11-23 22:54:30,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-23 22:54:30,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-23 22:54:30,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 336 transitions. [2024-11-23 22:54:30,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45652173913043476 [2024-11-23 22:54:30,106 INFO L175 Difference]: Start difference. First operand has 182 places, 638 transitions, 10789 flow. Second operand 32 states and 336 transitions. [2024-11-23 22:54:30,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 936 transitions, 16870 flow [2024-11-23 22:54:30,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 936 transitions, 15729 flow, removed 558 selfloop flow, removed 3 redundant places. [2024-11-23 22:54:30,787 INFO L231 Difference]: Finished difference. Result has 227 places, 838 transitions, 15545 flow [2024-11-23 22:54:30,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=9952, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=485, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=15545, PETRI_PLACES=227, PETRI_TRANSITIONS=838} [2024-11-23 22:54:30,789 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 202 predicate places. [2024-11-23 22:54:30,789 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 838 transitions, 15545 flow [2024-11-23 22:54:30,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.3125) internal successors, (117), 16 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:30,790 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:54:30,790 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:30,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 22:54:30,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-23 22:54:30,991 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:54:30,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:30,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1145674950, now seen corresponding path program 9 times [2024-11-23 22:54:30,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:30,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261446415] [2024-11-23 22:54:30,992 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:54:30,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:31,009 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:54:31,009 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:31,277 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:31,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:31,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261446415] [2024-11-23 22:54:31,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261446415] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:54:31,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169549444] [2024-11-23 22:54:31,278 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:54:31,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:31,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:54:31,281 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:54:31,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 22:54:31,350 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:54:31,351 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:31,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:54:31,353 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:54:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:31,514 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:54:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:31,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169549444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:54:31,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:54:31,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-11-23 22:54:31,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949550812] [2024-11-23 22:54:31,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:54:31,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-23 22:54:31,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:31,766 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-23 22:54:31,766 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2024-11-23 22:54:31,779 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-23 22:54:31,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 838 transitions, 15545 flow. Second operand has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:31,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:54:31,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-23 22:54:31,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:54:34,606 INFO L124 PetriNetUnfolderBase]: 2405/4156 cut-off events. [2024-11-23 22:54:34,606 INFO L125 PetriNetUnfolderBase]: For 89275/89297 co-relation queries the response was YES. [2024-11-23 22:54:34,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34529 conditions, 4156 events. 2405/4156 cut-off events. For 89275/89297 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 25349 event pairs, 98 based on Foata normal form. 12/4158 useless extension candidates. Maximal degree in co-relation 34397. Up to 982 conditions per place. [2024-11-23 22:54:34,655 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 241 selfloop transitions, 623 changer transitions 2/892 dead transitions. [2024-11-23 22:54:34,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 892 transitions, 17932 flow [2024-11-23 22:54:34,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 22:54:34,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-23 22:54:34,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 233 transitions. [2024-11-23 22:54:34,658 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46047430830039526 [2024-11-23 22:54:34,658 INFO L175 Difference]: Start difference. First operand has 227 places, 838 transitions, 15545 flow. Second operand 22 states and 233 transitions. [2024-11-23 22:54:34,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 892 transitions, 17932 flow [2024-11-23 22:54:35,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 892 transitions, 17626 flow, removed 118 selfloop flow, removed 6 redundant places. [2024-11-23 22:54:35,885 INFO L231 Difference]: Finished difference. Result has 243 places, 842 transitions, 17131 flow [2024-11-23 22:54:35,886 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=15166, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=833, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=613, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=17131, PETRI_PLACES=243, PETRI_TRANSITIONS=842} [2024-11-23 22:54:35,887 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 218 predicate places. [2024-11-23 22:54:35,887 INFO L471 AbstractCegarLoop]: Abstraction has has 243 places, 842 transitions, 17131 flow [2024-11-23 22:54:35,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.333333333333333) internal successors, (110), 15 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:35,887 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:54:35,887 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:35,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 22:54:36,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:36,088 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:54:36,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:36,089 INFO L85 PathProgramCache]: Analyzing trace with hash -3844350, now seen corresponding path program 10 times [2024-11-23 22:54:36,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:36,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051292612] [2024-11-23 22:54:36,089 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:54:36,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:36,112 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:54:36,113 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:36,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:36,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:36,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051292612] [2024-11-23 22:54:36,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051292612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:54:36,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308256743] [2024-11-23 22:54:36,454 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:54:36,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:36,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:54:36,457 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:54:36,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 22:54:36,521 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:54:36,521 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:36,522 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:54:36,524 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:54:36,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:36,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:54:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:36,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308256743] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:54:36,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:54:36,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 20 [2024-11-23 22:54:36,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628006720] [2024-11-23 22:54:36,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:54:36,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 22:54:36,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:36,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 22:54:36,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2024-11-23 22:54:36,952 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 22:54:36,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 842 transitions, 17131 flow. Second operand has 20 states, 20 states have (on average 6.55) internal successors, (131), 20 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:36,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:54:36,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 22:54:36,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:54:41,936 INFO L124 PetriNetUnfolderBase]: 4099/6805 cut-off events. [2024-11-23 22:54:41,936 INFO L125 PetriNetUnfolderBase]: For 196501/196501 co-relation queries the response was YES. [2024-11-23 22:54:41,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61201 conditions, 6805 events. 4099/6805 cut-off events. For 196501/196501 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 42500 event pairs, 88 based on Foata normal form. 89/6894 useless extension candidates. Maximal degree in co-relation 60943. Up to 1581 conditions per place. [2024-11-23 22:54:42,032 INFO L140 encePairwiseOnDemand]: 12/23 looper letters, 462 selfloop transitions, 1135 changer transitions 12/1610 dead transitions. [2024-11-23 22:54:42,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 1610 transitions, 35301 flow [2024-11-23 22:54:42,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-23 22:54:42,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2024-11-23 22:54:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 450 transitions. [2024-11-23 22:54:42,039 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4162812210915819 [2024-11-23 22:54:42,039 INFO L175 Difference]: Start difference. First operand has 243 places, 842 transitions, 17131 flow. Second operand 47 states and 450 transitions. [2024-11-23 22:54:42,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 1610 transitions, 35301 flow [2024-11-23 22:54:44,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 1610 transitions, 34548 flow, removed 62 selfloop flow, removed 14 redundant places. [2024-11-23 22:54:44,658 INFO L231 Difference]: Finished difference. Result has 294 places, 1434 transitions, 33367 flow [2024-11-23 22:54:44,659 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=16629, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=842, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=610, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=33367, PETRI_PLACES=294, PETRI_TRANSITIONS=1434} [2024-11-23 22:54:44,660 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 269 predicate places. [2024-11-23 22:54:44,660 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 1434 transitions, 33367 flow [2024-11-23 22:54:44,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.55) internal successors, (131), 20 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:44,660 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:54:44,660 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:54:44,672 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 22:54:44,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:44,861 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:54:44,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:54:44,862 INFO L85 PathProgramCache]: Analyzing trace with hash 723189224, now seen corresponding path program 11 times [2024-11-23 22:54:44,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:54:44,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068893210] [2024-11-23 22:54:44,862 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 22:54:44,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:54:44,880 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:54:44,880 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:45,101 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:45,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:54:45,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068893210] [2024-11-23 22:54:45,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068893210] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:54:45,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207147331] [2024-11-23 22:54:45,102 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 22:54:45,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:54:45,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:54:45,105 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:54:45,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 22:54:45,166 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:54:45,166 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:54:45,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:54:45,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:54:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:45,339 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:54:45,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:54:45,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [207147331] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:54:45,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:54:45,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-23 22:54:45,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919693176] [2024-11-23 22:54:45,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:54:45,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 22:54:45,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:54:45,587 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 22:54:45,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:54:45,593 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-23 22:54:45,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 1434 transitions, 33367 flow. Second operand has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:54:45,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:54:45,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-23 22:54:45,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:54:54,863 INFO L124 PetriNetUnfolderBase]: 4278/7281 cut-off events. [2024-11-23 22:54:54,863 INFO L125 PetriNetUnfolderBase]: For 230263/230357 co-relation queries the response was YES. [2024-11-23 22:54:54,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74855 conditions, 7281 events. 4278/7281 cut-off events. For 230263/230357 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 48409 event pairs, 318 based on Foata normal form. 28/7293 useless extension candidates. Maximal degree in co-relation 74373. Up to 2254 conditions per place. [2024-11-23 22:54:54,966 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 466 selfloop transitions, 1202 changer transitions 3/1737 dead transitions. [2024-11-23 22:54:54,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 1737 transitions, 43729 flow [2024-11-23 22:54:54,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-23 22:54:54,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-23 22:54:54,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 277 transitions. [2024-11-23 22:54:54,968 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44605475040257647 [2024-11-23 22:54:54,968 INFO L175 Difference]: Start difference. First operand has 294 places, 1434 transitions, 33367 flow. Second operand 27 states and 277 transitions. [2024-11-23 22:54:54,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 1737 transitions, 43729 flow [2024-11-23 22:54:59,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 1737 transitions, 41635 flow, removed 1038 selfloop flow, removed 3 redundant places. [2024-11-23 22:55:00,027 INFO L231 Difference]: Finished difference. Result has 331 places, 1682 transitions, 42451 flow [2024-11-23 22:55:00,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=32052, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1434, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=979, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=42451, PETRI_PLACES=331, PETRI_TRANSITIONS=1682} [2024-11-23 22:55:00,028 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 306 predicate places. [2024-11-23 22:55:00,028 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 1682 transitions, 42451 flow [2024-11-23 22:55:00,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.882352941176471) internal successors, (117), 17 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:55:00,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:55:00,029 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:55:00,035 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 22:55:00,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-23 22:55:00,229 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:55:00,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:00,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1902441880, now seen corresponding path program 12 times [2024-11-23 22:55:00,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:00,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472835786] [2024-11-23 22:55:00,230 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 22:55:00,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:00,245 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-23 22:55:00,245 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:55:00,561 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:55:00,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:00,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472835786] [2024-11-23 22:55:00,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472835786] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:55:00,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283882885] [2024-11-23 22:55:00,561 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 22:55:00,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:55:00,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:55:00,564 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:55:00,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 22:55:00,620 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-23 22:55:00,620 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:55:00,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:55:00,622 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:55:00,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:55:00,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:55:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:55:01,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283882885] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:55:01,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:55:01,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 19 [2024-11-23 22:55:01,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806515937] [2024-11-23 22:55:01,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:55:01,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 22:55:01,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:01,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 22:55:01,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:55:01,022 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-23 22:55:01,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 1682 transitions, 42451 flow. Second operand has 19 states, 19 states have (on average 7.0) internal successors, (133), 19 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:55:01,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:55:01,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-23 22:55:01,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:55:08,070 INFO L124 PetriNetUnfolderBase]: 4710/8045 cut-off events. [2024-11-23 22:55:08,070 INFO L125 PetriNetUnfolderBase]: For 235601/235681 co-relation queries the response was YES. [2024-11-23 22:55:08,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86743 conditions, 8045 events. 4710/8045 cut-off events. For 235601/235681 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 53992 event pairs, 90 based on Foata normal form. 94/8125 useless extension candidates. Maximal degree in co-relation 86597. Up to 1870 conditions per place. [2024-11-23 22:55:08,198 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 220 selfloop transitions, 1678 changer transitions 3/1967 dead transitions. [2024-11-23 22:55:08,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 1967 transitions, 52759 flow [2024-11-23 22:55:08,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-23 22:55:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2024-11-23 22:55:08,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 324 transitions. [2024-11-23 22:55:08,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44021739130434784 [2024-11-23 22:55:08,200 INFO L175 Difference]: Start difference. First operand has 331 places, 1682 transitions, 42451 flow. Second operand 32 states and 324 transitions. [2024-11-23 22:55:08,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 1967 transitions, 52759 flow [2024-11-23 22:55:14,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 1967 transitions, 52464 flow, removed 87 selfloop flow, removed 8 redundant places. [2024-11-23 22:55:14,892 INFO L231 Difference]: Finished difference. Result has 357 places, 1895 transitions, 53832 flow [2024-11-23 22:55:14,894 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=41579, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1445, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=53832, PETRI_PLACES=357, PETRI_TRANSITIONS=1895} [2024-11-23 22:55:14,895 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 332 predicate places. [2024-11-23 22:55:14,895 INFO L471 AbstractCegarLoop]: Abstraction has has 357 places, 1895 transitions, 53832 flow [2024-11-23 22:55:14,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.0) internal successors, (133), 19 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:55:14,895 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:55:14,896 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:55:14,906 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-23 22:55:15,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-23 22:55:15,097 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:55:15,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:15,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1059192826, now seen corresponding path program 13 times [2024-11-23 22:55:15,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:15,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636222925] [2024-11-23 22:55:15,098 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 22:55:15,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:15,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:55:15,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:15,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636222925] [2024-11-23 22:55:15,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636222925] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:55:15,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813037005] [2024-11-23 22:55:15,330 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 22:55:15,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:55:15,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:55:15,334 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:55:15,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 22:55:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:55:15,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:55:15,408 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:55:15,576 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:55:15,576 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:55:15,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:55:15,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1813037005] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:55:15,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:55:15,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-23 22:55:15,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859608450] [2024-11-23 22:55:15,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:55:15,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-23 22:55:15,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:15,803 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-23 22:55:15,803 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2024-11-23 22:55:15,812 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-23 22:55:15,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 1895 transitions, 53832 flow. Second operand has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:55:15,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:55:15,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-23 22:55:15,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:55:23,985 INFO L124 PetriNetUnfolderBase]: 5192/8906 cut-off events. [2024-11-23 22:55:23,985 INFO L125 PetriNetUnfolderBase]: For 337012/337088 co-relation queries the response was YES. [2024-11-23 22:55:24,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106394 conditions, 8906 events. 5192/8906 cut-off events. For 337012/337088 co-relation queries the response was YES. Maximal size of possible extension queue 466. Compared 61356 event pairs, 233 based on Foata normal form. 61/8953 useless extension candidates. Maximal degree in co-relation 105249. Up to 1975 conditions per place. [2024-11-23 22:55:24,116 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 464 selfloop transitions, 1643 changer transitions 8/2181 dead transitions. [2024-11-23 22:55:24,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 2181 transitions, 65660 flow [2024-11-23 22:55:24,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-23 22:55:24,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2024-11-23 22:55:24,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 253 transitions. [2024-11-23 22:55:24,118 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-23 22:55:24,118 INFO L175 Difference]: Start difference. First operand has 357 places, 1895 transitions, 53832 flow. Second operand 23 states and 253 transitions. [2024-11-23 22:55:24,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 2181 transitions, 65660 flow [2024-11-23 22:55:33,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 2181 transitions, 65085 flow, removed 221 selfloop flow, removed 7 redundant places. [2024-11-23 22:55:33,676 INFO L231 Difference]: Finished difference. Result has 382 places, 2102 transitions, 66189 flow [2024-11-23 22:55:33,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=53276, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1893, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=66189, PETRI_PLACES=382, PETRI_TRANSITIONS=2102} [2024-11-23 22:55:33,679 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 357 predicate places. [2024-11-23 22:55:33,679 INFO L471 AbstractCegarLoop]: Abstraction has has 382 places, 2102 transitions, 66189 flow [2024-11-23 22:55:33,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.0) internal successors, (119), 17 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:55:33,679 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:55:33,679 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:55:33,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-23 22:55:33,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-23 22:55:33,881 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:55:33,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:33,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1826494036, now seen corresponding path program 14 times [2024-11-23 22:55:33,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:33,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624281363] [2024-11-23 22:55:33,883 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:55:33,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:33,900 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:55:33,900 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:55:34,136 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:55:34,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:34,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624281363] [2024-11-23 22:55:34,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624281363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:55:34,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674835270] [2024-11-23 22:55:34,137 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:55:34,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:55:34,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:55:34,140 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:55:34,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 22:55:34,206 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:55:34,207 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:55:34,208 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:55:34,209 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:55:34,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:55:34,399 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:55:34,745 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:55:34,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674835270] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:55:34,746 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:55:34,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-11-23 22:55:34,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407006108] [2024-11-23 22:55:34,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:55:34,746 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:55:34,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:34,747 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:55:34,747 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:55:34,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-23 22:55:34,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 2102 transitions, 66189 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:55:34,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:55:34,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-23 22:55:34,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:55:43,563 INFO L124 PetriNetUnfolderBase]: 5171/8839 cut-off events. [2024-11-23 22:55:43,563 INFO L125 PetriNetUnfolderBase]: For 400145/400221 co-relation queries the response was YES. [2024-11-23 22:55:43,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115191 conditions, 8839 events. 5171/8839 cut-off events. For 400145/400221 co-relation queries the response was YES. Maximal size of possible extension queue 460. Compared 60560 event pairs, 309 based on Foata normal form. 22/8851 useless extension candidates. Maximal degree in co-relation 114206. Up to 2148 conditions per place. [2024-11-23 22:55:43,703 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 378 selfloop transitions, 1747 changer transitions 3/2194 dead transitions. [2024-11-23 22:55:43,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 2194 transitions, 72423 flow [2024-11-23 22:55:43,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-23 22:55:43,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-23 22:55:43,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 225 transitions. [2024-11-23 22:55:43,705 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44466403162055335 [2024-11-23 22:55:43,705 INFO L175 Difference]: Start difference. First operand has 382 places, 2102 transitions, 66189 flow. Second operand 22 states and 225 transitions. [2024-11-23 22:55:43,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 2194 transitions, 72423 flow [2024-11-23 22:55:55,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 2194 transitions, 72061 flow, removed 70 selfloop flow, removed 7 redundant places. [2024-11-23 22:55:55,292 INFO L231 Difference]: Finished difference. Result has 400 places, 2146 transitions, 72872 flow [2024-11-23 22:55:55,293 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=65751, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2099, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1698, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=72872, PETRI_PLACES=400, PETRI_TRANSITIONS=2146} [2024-11-23 22:55:55,294 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 375 predicate places. [2024-11-23 22:55:55,294 INFO L471 AbstractCegarLoop]: Abstraction has has 400 places, 2146 transitions, 72872 flow [2024-11-23 22:55:55,295 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:55:55,295 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:55:55,295 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:55:55,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 22:55:55,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-23 22:55:55,499 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-23 22:55:55,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:55:55,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1024483770, now seen corresponding path program 15 times [2024-11-23 22:55:55,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:55:55,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119383437] [2024-11-23 22:55:55,500 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:55:55,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:55:55,516 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:55:55,516 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:55:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:55:55,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:55:55,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119383437] [2024-11-23 22:55:55,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119383437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:55:55,691 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:55:55,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:55:55,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244887534] [2024-11-23 22:55:55,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:55:55,692 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:55:55,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:55:55,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:55:55,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:55:55,718 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-23 22:55:55,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 2146 transitions, 72872 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:55:55,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:55:55,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-23 22:55:55,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:56:04,746 INFO L124 PetriNetUnfolderBase]: 4737/8349 cut-off events. [2024-11-23 22:56:04,746 INFO L125 PetriNetUnfolderBase]: For 438449/438607 co-relation queries the response was YES. [2024-11-23 22:56:04,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119645 conditions, 8349 events. 4737/8349 cut-off events. For 438449/438607 co-relation queries the response was YES. Maximal size of possible extension queue 455. Compared 59113 event pairs, 893 based on Foata normal form. 25/8265 useless extension candidates. Maximal degree in co-relation 119077. Up to 5458 conditions per place. [2024-11-23 22:56:04,868 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 1622 selfloop transitions, 198 changer transitions 4/2172 dead transitions. [2024-11-23 22:56:04,868 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 2172 transitions, 76986 flow [2024-11-23 22:56:04,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:56:04,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 22:56:04,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-11-23 22:56:04,869 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4782608695652174 [2024-11-23 22:56:04,869 INFO L175 Difference]: Start difference. First operand has 400 places, 2146 transitions, 72872 flow. Second operand 7 states and 77 transitions. [2024-11-23 22:56:04,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 2172 transitions, 76986 flow [2024-11-23 22:56:17,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 2172 transitions, 75542 flow, removed 266 selfloop flow, removed 13 redundant places. [2024-11-23 22:56:17,138 INFO L231 Difference]: Finished difference. Result has 395 places, 2155 transitions, 72122 flow [2024-11-23 22:56:17,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=71445, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1948, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=72122, PETRI_PLACES=395, PETRI_TRANSITIONS=2155} [2024-11-23 22:56:17,140 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 370 predicate places. [2024-11-23 22:56:17,140 INFO L471 AbstractCegarLoop]: Abstraction has has 395 places, 2155 transitions, 72122 flow [2024-11-23 22:56:17,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:56:17,140 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:56:17,140 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:17,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 22:56:17,141 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)] === [2024-11-23 22:56:17,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:17,141 INFO L85 PathProgramCache]: Analyzing trace with hash -321023614, now seen corresponding path program 16 times [2024-11-23 22:56:17,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:17,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652942654] [2024-11-23 22:56:17,141 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:56:17,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:17,156 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:56:17,156 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:56:17,809 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:56:17,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:17,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652942654] [2024-11-23 22:56:17,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652942654] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:56:17,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152200899] [2024-11-23 22:56:17,810 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:56:17,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:56:17,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:56:17,813 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:56:17,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 22:56:17,879 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:56:17,879 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:56:17,883 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:56:17,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:56:18,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:56:18,167 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:56:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:56:18,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152200899] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:56:18,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:56:18,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8, 8] total 25 [2024-11-23 22:56:18,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419160309] [2024-11-23 22:56:18,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:56:18,646 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-23 22:56:18,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:18,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-23 22:56:18,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=502, Unknown=0, NotChecked=0, Total=600 [2024-11-23 22:56:18,660 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 22:56:18,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 2155 transitions, 72122 flow. Second operand has 25 states, 25 states have (on average 6.0) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:56:18,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:56:18,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 22:56:18,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:56:35,946 INFO L124 PetriNetUnfolderBase]: 7204/12046 cut-off events. [2024-11-23 22:56:35,946 INFO L125 PetriNetUnfolderBase]: For 554874/554874 co-relation queries the response was YES. [2024-11-23 22:56:36,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162916 conditions, 12046 events. 7204/12046 cut-off events. For 554874/554874 co-relation queries the response was YES. Maximal size of possible extension queue 588. Compared 83428 event pairs, 63 based on Foata normal form. 106/12152 useless extension candidates. Maximal degree in co-relation 162161. Up to 3021 conditions per place. [2024-11-23 22:56:36,466 INFO L140 encePairwiseOnDemand]: 13/23 looper letters, 1258 selfloop transitions, 2072 changer transitions 5/3336 dead transitions. [2024-11-23 22:56:36,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 3336 transitions, 117498 flow [2024-11-23 22:56:36,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2024-11-23 22:56:36,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2024-11-23 22:56:36,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 376 transitions. [2024-11-23 22:56:36,468 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38923395445134573 [2024-11-23 22:56:36,468 INFO L175 Difference]: Start difference. First operand has 395 places, 2155 transitions, 72122 flow. Second operand 42 states and 376 transitions. [2024-11-23 22:56:36,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 3336 transitions, 117498 flow [2024-11-23 22:56:56,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 429 places, 3336 transitions, 117011 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-11-23 22:56:56,980 INFO L231 Difference]: Finished difference. Result has 452 places, 2928 transitions, 106227 flow [2024-11-23 22:56:56,981 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=71737, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1311, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=744, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=106227, PETRI_PLACES=452, PETRI_TRANSITIONS=2928} [2024-11-23 22:56:56,982 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 427 predicate places. [2024-11-23 22:56:56,982 INFO L471 AbstractCegarLoop]: Abstraction has has 452 places, 2928 transitions, 106227 flow [2024-11-23 22:56:56,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.0) internal successors, (150), 25 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:56:56,982 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:56:56,982 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:56:56,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-23 22:56:57,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-23 22:56:57,183 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)] === [2024-11-23 22:56:57,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:56:57,183 INFO L85 PathProgramCache]: Analyzing trace with hash 993418882, now seen corresponding path program 17 times [2024-11-23 22:56:57,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:56:57,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396633597] [2024-11-23 22:56:57,183 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 22:56:57,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:56:57,196 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-23 22:56:57,196 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:56:57,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:56:57,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:56:57,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396633597] [2024-11-23 22:56:57,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396633597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:56:57,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:56:57,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:56:57,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093004722] [2024-11-23 22:56:57,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:56:57,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-23 22:56:57,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:56:57,444 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-23 22:56:57,444 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-23 22:56:57,478 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 23 [2024-11-23 22:56:57,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 2928 transitions, 106227 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:56:57,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:56:57,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 23 [2024-11-23 22:56:57,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:57:10,625 INFO L124 PetriNetUnfolderBase]: 6201/10984 cut-off events. [2024-11-23 22:57:10,625 INFO L125 PetriNetUnfolderBase]: For 643330/643461 co-relation queries the response was YES. [2024-11-23 22:57:10,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169218 conditions, 10984 events. 6201/10984 cut-off events. For 643330/643461 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 81591 event pairs, 1184 based on Foata normal form. 43/10920 useless extension candidates. Maximal degree in co-relation 167113. Up to 7297 conditions per place. [2024-11-23 22:57:10,834 INFO L140 encePairwiseOnDemand]: 17/23 looper letters, 2160 selfloop transitions, 276 changer transitions 0/2978 dead transitions. [2024-11-23 22:57:10,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 2978 transitions, 112577 flow [2024-11-23 22:57:10,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-23 22:57:10,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-23 22:57:10,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-11-23 22:57:10,836 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47342995169082125 [2024-11-23 22:57:10,836 INFO L175 Difference]: Start difference. First operand has 452 places, 2928 transitions, 106227 flow. Second operand 9 states and 98 transitions. [2024-11-23 22:57:10,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 2978 transitions, 112577 flow [2024-11-23 22:57:31,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 452 places, 2978 transitions, 111776 flow, removed 314 selfloop flow, removed 8 redundant places. [2024-11-23 22:57:31,668 INFO L231 Difference]: Finished difference. Result has 455 places, 2961 transitions, 107373 flow [2024-11-23 22:57:31,670 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=105520, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2928, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=244, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2653, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=107373, PETRI_PLACES=455, PETRI_TRANSITIONS=2961} [2024-11-23 22:57:31,671 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 430 predicate places. [2024-11-23 22:57:31,671 INFO L471 AbstractCegarLoop]: Abstraction has has 455 places, 2961 transitions, 107373 flow [2024-11-23 22:57:31,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:57:31,671 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:57:31,672 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:57:31,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 22:57:31,672 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)] === [2024-11-23 22:57:31,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:57:31,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1166666574, now seen corresponding path program 18 times [2024-11-23 22:57:31,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:57:31,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499240043] [2024-11-23 22:57:31,673 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 22:57:31,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:57:31,687 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-23 22:57:31,687 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:57:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:57:31,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:57:31,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499240043] [2024-11-23 22:57:31,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499240043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:57:31,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:57:31,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-23 22:57:31,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466615302] [2024-11-23 22:57:31,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:57:31,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:57:31,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:57:31,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:57:31,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:57:31,966 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-23 22:57:31,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 2961 transitions, 107373 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:57:31,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:57:31,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-23 22:57:31,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:57:47,875 INFO L124 PetriNetUnfolderBase]: 6796/11663 cut-off events. [2024-11-23 22:57:47,875 INFO L125 PetriNetUnfolderBase]: For 657255/657383 co-relation queries the response was YES. [2024-11-23 22:57:48,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173700 conditions, 11663 events. 6796/11663 cut-off events. For 657255/657383 co-relation queries the response was YES. Maximal size of possible extension queue 592. Compared 83564 event pairs, 1682 based on Foata normal form. 22/11667 useless extension candidates. Maximal degree in co-relation 173101. Up to 9347 conditions per place. [2024-11-23 22:57:48,083 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 2606 selfloop transitions, 255 changer transitions 2/2985 dead transitions. [2024-11-23 22:57:48,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 2985 transitions, 113644 flow [2024-11-23 22:57:48,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:57:48,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 22:57:48,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-11-23 22:57:48,085 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44565217391304346 [2024-11-23 22:57:48,085 INFO L175 Difference]: Start difference. First operand has 455 places, 2961 transitions, 107373 flow. Second operand 8 states and 82 transitions. [2024-11-23 22:57:48,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 2985 transitions, 113644 flow [2024-11-23 22:58:10,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 2985 transitions, 113377 flow, removed 9 selfloop flow, removed 3 redundant places. [2024-11-23 22:58:10,272 INFO L231 Difference]: Finished difference. Result has 461 places, 2962 transitions, 107691 flow [2024-11-23 22:58:10,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=107108, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2961, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=254, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=107691, PETRI_PLACES=461, PETRI_TRANSITIONS=2962} [2024-11-23 22:58:10,274 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 436 predicate places. [2024-11-23 22:58:10,274 INFO L471 AbstractCegarLoop]: Abstraction has has 461 places, 2962 transitions, 107691 flow [2024-11-23 22:58:10,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:58:10,274 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:58:10,274 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:10,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 22:58:10,274 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)] === [2024-11-23 22:58:10,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:10,275 INFO L85 PathProgramCache]: Analyzing trace with hash -250034670, now seen corresponding path program 19 times [2024-11-23 22:58:10,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:10,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17181127] [2024-11-23 22:58:10,275 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 22:58:10,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:10,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:10,498 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:58:10,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:10,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17181127] [2024-11-23 22:58:10,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17181127] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:58:10,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2096446678] [2024-11-23 22:58:10,498 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 22:58:10,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:58:10,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:58:10,502 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:58:10,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 22:58:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:58:10,565 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:58:10,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:58:10,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:58:10,721 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:58:11,079 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:58:11,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2096446678] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:58:11,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:58:11,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2024-11-23 22:58:11,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031980637] [2024-11-23 22:58:11,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:58:11,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:58:11,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:11,081 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:58:11,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:58:11,093 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-23 22:58:11,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 2962 transitions, 107691 flow. Second operand has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:58:11,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:58:11,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-23 22:58:11,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:58:26,837 INFO L124 PetriNetUnfolderBase]: 7058/12098 cut-off events. [2024-11-23 22:58:26,837 INFO L125 PetriNetUnfolderBase]: For 681752/681872 co-relation queries the response was YES. [2024-11-23 22:58:27,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181074 conditions, 12098 events. 7058/12098 cut-off events. For 681752/681872 co-relation queries the response was YES. Maximal size of possible extension queue 609. Compared 87092 event pairs, 1150 based on Foata normal form. 34/12120 useless extension candidates. Maximal degree in co-relation 180472. Up to 6926 conditions per place. [2024-11-23 22:58:27,090 INFO L140 encePairwiseOnDemand]: 14/23 looper letters, 1438 selfloop transitions, 1555 changer transitions 2/3117 dead transitions. [2024-11-23 22:58:27,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 3117 transitions, 118844 flow [2024-11-23 22:58:27,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-23 22:58:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-23 22:58:27,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 189 transitions. [2024-11-23 22:58:27,091 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43249427917620137 [2024-11-23 22:58:27,092 INFO L175 Difference]: Start difference. First operand has 461 places, 2962 transitions, 107691 flow. Second operand 19 states and 189 transitions. [2024-11-23 22:58:27,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 3117 transitions, 118844 flow [2024-11-23 22:58:50,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 3117 transitions, 118341 flow, removed 9 selfloop flow, removed 5 redundant places. [2024-11-23 22:58:51,013 INFO L231 Difference]: Finished difference. Result has 485 places, 3072 transitions, 117997 flow [2024-11-23 22:58:51,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=107136, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2960, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1446, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=117997, PETRI_PLACES=485, PETRI_TRANSITIONS=3072} [2024-11-23 22:58:51,016 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 460 predicate places. [2024-11-23 22:58:51,016 INFO L471 AbstractCegarLoop]: Abstraction has has 485 places, 3072 transitions, 117997 flow [2024-11-23 22:58:51,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.25) internal successors, (116), 16 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:58:51,016 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:58:51,016 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:58:51,023 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-23 22:58:51,216 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:58:51,217 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)] === [2024-11-23 22:58:51,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:58:51,217 INFO L85 PathProgramCache]: Analyzing trace with hash -842629798, now seen corresponding path program 20 times [2024-11-23 22:58:51,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:58:51,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749311159] [2024-11-23 22:58:51,217 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:58:51,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:58:51,227 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:58:51,227 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:58:51,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:58:51,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:58:51,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749311159] [2024-11-23 22:58:51,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749311159] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:58:51,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527941090] [2024-11-23 22:58:51,461 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:58:51,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:58:51,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:58:51,463 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:58:51,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 22:58:51,523 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:58:51,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:58:51,524 INFO L256 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-23 22:58:51,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:58:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:58:51,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:58:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:58:52,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527941090] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-23 22:58:52,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-23 22:58:52,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 18 [2024-11-23 22:58:52,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177363184] [2024-11-23 22:58:52,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:58:52,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 22:58:52,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:58:52,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 22:58:52,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2024-11-23 22:58:52,166 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2024-11-23 22:58:52,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 3072 transitions, 117997 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:58:52,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:58:52,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2024-11-23 22:58:52,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:59:10,512 INFO L124 PetriNetUnfolderBase]: 7265/12446 cut-off events. [2024-11-23 22:59:10,512 INFO L125 PetriNetUnfolderBase]: For 802163/802311 co-relation queries the response was YES. [2024-11-23 22:59:10,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195763 conditions, 12446 events. 7265/12446 cut-off events. For 802163/802311 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 90200 event pairs, 711 based on Foata normal form. 56/12482 useless extension candidates. Maximal degree in co-relation 195150. Up to 4904 conditions per place. [2024-11-23 22:59:11,018 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 1286 selfloop transitions, 1818 changer transitions 2/3228 dead transitions. [2024-11-23 22:59:11,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 3228 transitions, 129694 flow [2024-11-23 22:59:11,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:59:11,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:59:11,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-11-23 22:59:11,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.466403162055336 [2024-11-23 22:59:11,020 INFO L175 Difference]: Start difference. First operand has 485 places, 3072 transitions, 117997 flow. Second operand 11 states and 118 transitions. [2024-11-23 22:59:11,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 3228 transitions, 129694 flow [2024-11-23 22:59:38,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 3228 transitions, 129225 flow, removed 82 selfloop flow, removed 5 redundant places. [2024-11-23 22:59:38,412 INFO L231 Difference]: Finished difference. Result has 494 places, 3171 transitions, 128509 flow [2024-11-23 22:59:38,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=117549, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3072, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1726, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=128509, PETRI_PLACES=494, PETRI_TRANSITIONS=3171} [2024-11-23 22:59:38,415 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, 469 predicate places. [2024-11-23 22:59:38,415 INFO L471 AbstractCegarLoop]: Abstraction has has 494 places, 3171 transitions, 128509 flow [2024-11-23 22:59:38,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:59:38,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:59:38,416 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:59:38,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-23 22:59:38,616 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:38,616 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)] === [2024-11-23 22:59:38,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:59:38,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1247547784, now seen corresponding path program 21 times [2024-11-23 22:59:38,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:59:38,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707119656] [2024-11-23 22:59:38,617 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:59:38,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:59:38,634 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:59:38,635 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:59:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:59:38,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:59:38,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707119656] [2024-11-23 22:59:38,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707119656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:59:38,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415441335] [2024-11-23 22:59:38,913 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:59:38,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:59:38,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:59:38,916 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:59:38,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc97bd51-33cc-4833-a834-47ea6fa48ea8/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-23 22:59:38,980 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:59:38,980 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:59:38,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-23 22:59:38,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:59:39,376 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 22:59:39,377 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:59:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:59:39,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415441335] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:59:39,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:59:39,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 18 [2024-11-23 22:59:39,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383266396] [2024-11-23 22:59:39,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:59:39,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-23 22:59:39,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:59:39,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-23 22:59:39,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2024-11-23 22:59:39,985 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2024-11-23 22:59:39,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 3171 transitions, 128509 flow. Second operand has 19 states, 19 states have (on average 7.0) internal successors, (133), 19 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:59:39,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:59:39,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2024-11-23 22:59:39,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 23:00:04,918 INFO L124 PetriNetUnfolderBase]: 7976/13369 cut-off events. [2024-11-23 23:00:04,918 INFO L125 PetriNetUnfolderBase]: For 907897/907897 co-relation queries the response was YES. [2024-11-23 23:00:05,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213718 conditions, 13369 events. 7976/13369 cut-off events. For 907897/907897 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 94454 event pairs, 30 based on Foata normal form. 75/13444 useless extension candidates. Maximal degree in co-relation 212899. Up to 5345 conditions per place. [2024-11-23 23:00:05,305 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 1809 selfloop transitions, 1802 changer transitions 76/3688 dead transitions. [2024-11-23 23:00:05,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 509 places, 3688 transitions, 155652 flow [2024-11-23 23:00:05,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-23 23:00:05,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-11-23 23:00:05,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 191 transitions. [2024-11-23 23:00:05,306 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4884910485933504 [2024-11-23 23:00:05,306 INFO L175 Difference]: Start difference. First operand has 494 places, 3171 transitions, 128509 flow. Second operand 17 states and 191 transitions. [2024-11-23 23:00:05,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 509 places, 3688 transitions, 155652 flow