./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.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_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/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_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/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_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/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 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 22:46:21,957 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 22:46:22,062 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-23 22:46:22,073 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 22:46:22,075 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 22:46:22,109 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 22:46:22,109 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 22:46:22,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 22:46:22,110 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 22:46:22,110 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 22:46:22,110 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 22:46:22,110 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 22:46:22,111 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 22:46:22,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 22:46:22,111 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 22:46:22,111 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 22:46:22,111 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 22:46:22,111 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 22:46:22,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 22:46:22,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 22:46:22,112 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-23 22:46:22,112 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-23 22:46:22,112 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-23 22:46:22,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 22:46:22,112 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 22:46:22,112 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 22:46:22,112 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 22:46:22,113 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 22:46:22,113 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 22:46:22,113 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 22:46:22,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:46:22,113 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:46:22,113 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:46:22,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:46:22,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 22:46:22,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 22:46:22,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 22:46:22,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 22:46:22,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:46:22,116 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 22:46:22,116 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 22:46:22,117 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 22:46:22,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 22:46:22,117 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 22:46:22,117 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 22:46:22,117 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 22:46:22,118 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 22:46:22,118 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_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/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 -> 5dd003755f1e361f3bbf00c3bfecbc1131b6df98a7806f5bb08971966b13d6ac [2024-11-23 22:46:22,426 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 22:46:22,437 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 22:46:22,443 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 22:46:22,445 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 22:46:22,446 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 22:46:22,447 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-23 22:46:25,782 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/data/a82ea7237/f5fc117d1eb14c0092e5bcdf3db7b77e/FLAG89166ab41 [2024-11-23 22:46:26,230 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 22:46:26,237 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2024-11-23 22:46:26,263 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/data/a82ea7237/f5fc117d1eb14c0092e5bcdf3db7b77e/FLAG89166ab41 [2024-11-23 22:46:26,329 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/data/a82ea7237/f5fc117d1eb14c0092e5bcdf3db7b77e [2024-11-23 22:46:26,333 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 22:46:26,339 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 22:46:26,341 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 22:46:26,345 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 22:46:26,354 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 22:46:26,355 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,356 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@744b2308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26, skipping insertion in model container [2024-11-23 22:46:26,356 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,384 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 22:46:26,679 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 22:46:26,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:46:26,695 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 22:46:26,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 22:46:26,754 INFO L204 MainTranslator]: Completed translation [2024-11-23 22:46:26,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26 WrapperNode [2024-11-23 22:46:26,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 22:46:26,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 22:46:26,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 22:46:26,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 22:46:26,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,774 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,806 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 17, calls inlined = 19, statements flattened = 249 [2024-11-23 22:46:26,806 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 22:46:26,807 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 22:46:26,807 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 22:46:26,807 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 22:46:26,818 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,819 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,825 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,849 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-23 22:46:26,850 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,850 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,862 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,863 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,869 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,870 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,872 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,875 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 22:46:26,878 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 22:46:26,879 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 22:46:26,879 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 22:46:26,880 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26" (1/1) ... [2024-11-23 22:46:26,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 22:46:26,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:46:26,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 22:46:26,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 22:46:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 22:46:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-23 22:46:26,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-23 22:46:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-23 22:46:26,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-23 22:46:26,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-23 22:46:26,967 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-23 22:46:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-23 22:46:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-23 22:46:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-23 22:46:26,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-23 22:46:26,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-23 22:46:26,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-23 22:46:26,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 22:46:26,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 22:46:26,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 22:46:26,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-23 22:46:26,970 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-23 22:46:26,973 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 22:46:27,156 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 22:46:27,160 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 22:46:27,860 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-23 22:46:27,861 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 22:46:28,456 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 22:46:28,457 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-23 22:46:28,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:46:28 BoogieIcfgContainer [2024-11-23 22:46:28,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 22:46:28,462 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 22:46:28,462 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 22:46:28,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 22:46:28,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:46:26" (1/3) ... [2024-11-23 22:46:28,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598b3346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:46:28, skipping insertion in model container [2024-11-23 22:46:28,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:46:26" (2/3) ... [2024-11-23 22:46:28,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@598b3346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:46:28, skipping insertion in model container [2024-11-23 22:46:28,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:46:28" (3/3) ... [2024-11-23 22:46:28,473 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2024-11-23 22:46:28,493 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 22:46:28,495 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-queue-add-3-nl.wvr.c that has 4 procedures, 54 locations, 1 initial locations, 5 loop locations, and 16 error locations. [2024-11-23 22:46:28,495 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-23 22:46:28,589 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-23 22:46:28,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 62 transitions, 145 flow [2024-11-23 22:46:28,698 INFO L124 PetriNetUnfolderBase]: 9/59 cut-off events. [2024-11-23 22:46:28,701 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-23 22:46:28,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 59 events. 9/59 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 144 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 43. Up to 3 conditions per place. [2024-11-23 22:46:28,707 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 62 transitions, 145 flow [2024-11-23 22:46:28,710 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 58 transitions, 134 flow [2024-11-23 22:46:28,719 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 22:46:28,733 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;@d34f024, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 22:46:28,733 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2024-11-23 22:46:28,737 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-23 22:46:28,738 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-23 22:46:28,738 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-23 22:46:28,738 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:28,739 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 22:46:28,739 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:28,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:28,745 INFO L85 PathProgramCache]: Analyzing trace with hash 750207, now seen corresponding path program 1 times [2024-11-23 22:46:28,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:28,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756703017] [2024-11-23 22:46:28,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:28,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:29,096 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 22:46:29,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:29,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756703017] [2024-11-23 22:46:29,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756703017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:29,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:29,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 22:46:29,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627123135] [2024-11-23 22:46:29,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:29,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:46:29,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:29,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:46:29,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:46:29,177 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:46:29,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:46:29,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:29,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:46:29,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:30,662 INFO L124 PetriNetUnfolderBase]: 4012/6041 cut-off events. [2024-11-23 22:46:30,662 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2024-11-23 22:46:30,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11742 conditions, 6041 events. 4012/6041 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 33701 event pairs, 3528 based on Foata normal form. 1/3961 useless extension candidates. Maximal degree in co-relation 11222. Up to 5391 conditions per place. [2024-11-23 22:46:30,733 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 40 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2024-11-23 22:46:30,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 202 flow [2024-11-23 22:46:30,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:46:30,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 22:46:30,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2024-11-23 22:46:30,754 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45698924731182794 [2024-11-23 22:46:30,757 INFO L175 Difference]: Start difference. First operand has 59 places, 58 transitions, 134 flow. Second operand 3 states and 85 transitions. [2024-11-23 22:46:30,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 202 flow [2024-11-23 22:46:30,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 190 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-23 22:46:30,781 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 110 flow [2024-11-23 22:46:30,786 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2024-11-23 22:46:30,790 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -8 predicate places. [2024-11-23 22:46:30,793 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 110 flow [2024-11-23 22:46:30,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:46:30,794 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:30,794 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-23 22:46:30,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-23 22:46:30,794 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:30,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:30,795 INFO L85 PathProgramCache]: Analyzing trace with hash 750208, now seen corresponding path program 1 times [2024-11-23 22:46:30,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:30,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082110871] [2024-11-23 22:46:30,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:30,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:31,368 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 22:46:31,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:31,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082110871] [2024-11-23 22:46:31,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082110871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:31,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:31,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 22:46:31,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686510136] [2024-11-23 22:46:31,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:31,372 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:46:31,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:31,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:46:31,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:46:31,405 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:46:31,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 110 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 22:46:31,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:31,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:46:31,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:32,454 INFO L124 PetriNetUnfolderBase]: 4013/6044 cut-off events. [2024-11-23 22:46:32,454 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-23 22:46:32,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11561 conditions, 6044 events. 4013/6044 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 33663 event pairs, 3528 based on Foata normal form. 0/3961 useless extension candidates. Maximal degree in co-relation 11532. Up to 5400 conditions per place. [2024-11-23 22:46:32,502 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-11-23 22:46:32,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 53 transitions, 210 flow [2024-11-23 22:46:32,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:46:32,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:46:32,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2024-11-23 22:46:32,504 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-11-23 22:46:32,504 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 110 flow. Second operand 4 states and 96 transitions. [2024-11-23 22:46:32,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 53 transitions, 210 flow [2024-11-23 22:46:32,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 22:46:32,507 INFO L231 Difference]: Finished difference. Result has 54 places, 53 transitions, 133 flow [2024-11-23 22:46:32,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=54, PETRI_TRANSITIONS=53} [2024-11-23 22:46:32,508 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -5 predicate places. [2024-11-23 22:46:32,508 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 53 transitions, 133 flow [2024-11-23 22:46:32,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 22:46:32,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:32,508 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-23 22:46:32,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-23 22:46:32,509 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:32,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:32,509 INFO L85 PathProgramCache]: Analyzing trace with hash 23258047, now seen corresponding path program 1 times [2024-11-23 22:46:32,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:32,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985694520] [2024-11-23 22:46:32,510 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:32,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:32,924 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 22:46:32,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:32,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985694520] [2024-11-23 22:46:32,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985694520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:32,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:32,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:46:32,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783126522] [2024-11-23 22:46:32,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:32,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:46:32,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:32,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:46:32,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:46:32,980 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:46:32,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 22:46:32,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:32,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:46:32,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:34,122 INFO L124 PetriNetUnfolderBase]: 4014/6047 cut-off events. [2024-11-23 22:46:34,123 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-23 22:46:34,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11578 conditions, 6047 events. 4014/6047 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 33717 event pairs, 3528 based on Foata normal form. 0/3963 useless extension candidates. Maximal degree in co-relation 11553. Up to 5399 conditions per place. [2024-11-23 22:46:34,193 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 43 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-11-23 22:46:34,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 239 flow [2024-11-23 22:46:34,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:46:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 22:46:34,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2024-11-23 22:46:34,199 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-11-23 22:46:34,199 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 133 flow. Second operand 5 states and 111 transitions. [2024-11-23 22:46:34,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 239 flow [2024-11-23 22:46:34,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 22:46:34,205 INFO L231 Difference]: Finished difference. Result has 59 places, 56 transitions, 167 flow [2024-11-23 22:46:34,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=59, PETRI_TRANSITIONS=56} [2024-11-23 22:46:34,206 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2024-11-23 22:46:34,207 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 56 transitions, 167 flow [2024-11-23 22:46:34,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 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 22:46:34,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:34,208 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1] [2024-11-23 22:46:34,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-23 22:46:34,208 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:34,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:34,210 INFO L85 PathProgramCache]: Analyzing trace with hash 720974541, now seen corresponding path program 1 times [2024-11-23 22:46:34,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:34,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870227113] [2024-11-23 22:46:34,210 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:34,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:34,736 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 22:46:34,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:34,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870227113] [2024-11-23 22:46:34,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870227113] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:46:34,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216998889] [2024-11-23 22:46:34,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:34,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:46:34,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:46:34,743 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:46:34,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 22:46:34,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:34,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 22:46:34,855 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:46:34,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-23 22:46:35,199 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 22:46:35,199 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:46:35,351 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 22:46:35,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216998889] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:46:35,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:46:35,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-11-23 22:46:35,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408282837] [2024-11-23 22:46:35,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:46:35,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:46:35,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:35,354 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:46:35,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:46:35,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:46:35,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 56 transitions, 167 flow. Second operand has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:46:35,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:35,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:46:35,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:36,548 INFO L124 PetriNetUnfolderBase]: 4015/6049 cut-off events. [2024-11-23 22:46:36,549 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-11-23 22:46:36,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11601 conditions, 6049 events. 4015/6049 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 33748 event pairs, 3528 based on Foata normal form. 0/3968 useless extension candidates. Maximal degree in co-relation 11563. Up to 5400 conditions per place. [2024-11-23 22:46:36,579 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 42 selfloop transitions, 10 changer transitions 0/58 dead transitions. [2024-11-23 22:46:36,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 282 flow [2024-11-23 22:46:36,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:46:36,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 22:46:36,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 147 transitions. [2024-11-23 22:46:36,581 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.2963709677419355 [2024-11-23 22:46:36,581 INFO L175 Difference]: Start difference. First operand has 59 places, 56 transitions, 167 flow. Second operand 8 states and 147 transitions. [2024-11-23 22:46:36,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 282 flow [2024-11-23 22:46:36,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 58 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-23 22:46:36,586 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 197 flow [2024-11-23 22:46:36,586 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=197, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2024-11-23 22:46:36,587 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2024-11-23 22:46:36,588 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 197 flow [2024-11-23 22:46:36,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.363636363636363) internal successors, (147), 11 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:46:36,588 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:36,588 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-23 22:46:36,599 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 22:46:36,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:46:36,792 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:36,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:36,793 INFO L85 PathProgramCache]: Analyzing trace with hash 876170637, now seen corresponding path program 1 times [2024-11-23 22:46:36,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:36,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893939542] [2024-11-23 22:46:36,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:36,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:36,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:37,131 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 22:46:37,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:37,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893939542] [2024-11-23 22:46:37,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893939542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:46:37,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451164302] [2024-11-23 22:46:37,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:37,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:46:37,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:46:37,134 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:46:37,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 22:46:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:37,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 22:46:37,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:46:37,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-11-23 22:46:37,540 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 22:46:37,540 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:46:37,810 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 22:46:37,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451164302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:46:37,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:46:37,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 11 [2024-11-23 22:46:37,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169572415] [2024-11-23 22:46:37,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:46:37,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-23 22:46:37,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:37,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-23 22:46:37,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-23 22:46:37,943 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:46:37,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 197 flow. Second operand has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 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 22:46:37,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:37,944 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:46:37,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:39,147 INFO L124 PetriNetUnfolderBase]: 4015/6048 cut-off events. [2024-11-23 22:46:39,147 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-11-23 22:46:39,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11608 conditions, 6048 events. 4015/6048 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 368. Compared 33761 event pairs, 3528 based on Foata normal form. 0/3968 useless extension candidates. Maximal degree in co-relation 11562. Up to 5391 conditions per place. [2024-11-23 22:46:39,182 INFO L140 encePairwiseOnDemand]: 54/62 looper letters, 36 selfloop transitions, 15 changer transitions 0/57 dead transitions. [2024-11-23 22:46:39,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 57 transitions, 295 flow [2024-11-23 22:46:39,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:46:39,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 22:46:39,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-11-23 22:46:39,184 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-11-23 22:46:39,184 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 197 flow. Second operand 7 states and 133 transitions. [2024-11-23 22:46:39,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 57 transitions, 295 flow [2024-11-23 22:46:39,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 248 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-11-23 22:46:39,187 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 176 flow [2024-11-23 22:46:39,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=176, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2024-11-23 22:46:39,188 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2024-11-23 22:46:39,188 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 176 flow [2024-11-23 22:46:39,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 13.307692307692308) internal successors, (173), 13 states have internal predecessors, (173), 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 22:46:39,188 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:39,189 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:39,199 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 22:46:39,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:46:39,390 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:39,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:39,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1394634234, now seen corresponding path program 1 times [2024-11-23 22:46:39,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:39,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67169966] [2024-11-23 22:46:39,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:39,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:39,525 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 22:46:39,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:39,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67169966] [2024-11-23 22:46:39,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67169966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:39,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:39,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 22:46:39,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135648255] [2024-11-23 22:46:39,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:39,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:46:39,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:39,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:46:39,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:46:39,535 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-23 22:46:39,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 22:46:39,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:39,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-23 22:46:39,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:40,604 INFO L124 PetriNetUnfolderBase]: 4175/6329 cut-off events. [2024-11-23 22:46:40,604 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-11-23 22:46:40,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12156 conditions, 6329 events. 4175/6329 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 35391 event pairs, 3675 based on Foata normal form. 115/4328 useless extension candidates. Maximal degree in co-relation 11556. Up to 5403 conditions per place. [2024-11-23 22:46:40,646 INFO L140 encePairwiseOnDemand]: 48/62 looper letters, 66 selfloop transitions, 5 changer transitions 1/78 dead transitions. [2024-11-23 22:46:40,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 78 transitions, 391 flow [2024-11-23 22:46:40,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:46:40,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 22:46:40,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 145 transitions. [2024-11-23 22:46:40,649 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46774193548387094 [2024-11-23 22:46:40,649 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 176 flow. Second operand 5 states and 145 transitions. [2024-11-23 22:46:40,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 78 transitions, 391 flow [2024-11-23 22:46:40,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 78 transitions, 350 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-11-23 22:46:40,652 INFO L231 Difference]: Finished difference. Result has 62 places, 59 transitions, 194 flow [2024-11-23 22:46:40,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=62, PETRI_TRANSITIONS=59} [2024-11-23 22:46:40,653 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 3 predicate places. [2024-11-23 22:46:40,653 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 59 transitions, 194 flow [2024-11-23 22:46:40,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 22:46:40,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:40,654 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:40,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-23 22:46:40,654 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:40,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash -714391609, now seen corresponding path program 1 times [2024-11-23 22:46:40,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:40,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821811369] [2024-11-23 22:46:40,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:40,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:40,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:46:40,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:40,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821811369] [2024-11-23 22:46:40,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821811369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:40,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:40,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 22:46:40,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296411857] [2024-11-23 22:46:40,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:40,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:46:40,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:40,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:46:40,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:46:40,823 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:46:40,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 59 transitions, 194 flow. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:46:40,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:40,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:46:40,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:41,387 INFO L124 PetriNetUnfolderBase]: 3026/4593 cut-off events. [2024-11-23 22:46:41,388 INFO L125 PetriNetUnfolderBase]: For 399/399 co-relation queries the response was YES. [2024-11-23 22:46:41,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9753 conditions, 4593 events. 3026/4593 cut-off events. For 399/399 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 24114 event pairs, 2670 based on Foata normal form. 0/3307 useless extension candidates. Maximal degree in co-relation 9178. Up to 4162 conditions per place. [2024-11-23 22:46:41,415 INFO L140 encePairwiseOnDemand]: 56/62 looper letters, 43 selfloop transitions, 7 changer transitions 0/56 dead transitions. [2024-11-23 22:46:41,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 56 transitions, 282 flow [2024-11-23 22:46:41,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 22:46:41,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-23 22:46:41,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-11-23 22:46:41,417 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-11-23 22:46:41,417 INFO L175 Difference]: Start difference. First operand has 62 places, 59 transitions, 194 flow. Second operand 5 states and 102 transitions. [2024-11-23 22:46:41,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 56 transitions, 282 flow [2024-11-23 22:46:41,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 56 transitions, 277 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 22:46:41,421 INFO L231 Difference]: Finished difference. Result has 61 places, 56 transitions, 191 flow [2024-11-23 22:46:41,422 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=61, PETRI_TRANSITIONS=56} [2024-11-23 22:46:41,424 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2024-11-23 22:46:41,424 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 56 transitions, 191 flow [2024-11-23 22:46:41,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 22:46:41,426 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:41,426 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:41,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-23 22:46:41,426 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:41,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:41,427 INFO L85 PathProgramCache]: Analyzing trace with hash -714391608, now seen corresponding path program 1 times [2024-11-23 22:46:41,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:41,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422874769] [2024-11-23 22:46:41,427 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:41,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:41,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:41,826 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-23 22:46:41,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:41,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422874769] [2024-11-23 22:46:41,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422874769] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:41,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:41,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:46:41,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096393329] [2024-11-23 22:46:41,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:41,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:46:41,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:41,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:46:41,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-23 22:46:41,867 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:46:41,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 56 transitions, 191 flow. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 22:46:41,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:41,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:46:41,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:42,268 INFO L124 PetriNetUnfolderBase]: 2129/3277 cut-off events. [2024-11-23 22:46:42,268 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2024-11-23 22:46:42,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6658 conditions, 3277 events. 2129/3277 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 16048 event pairs, 1813 based on Foata normal form. 0/2644 useless extension candidates. Maximal degree in co-relation 6039. Up to 2905 conditions per place. [2024-11-23 22:46:42,288 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 43 selfloop transitions, 4 changer transitions 0/53 dead transitions. [2024-11-23 22:46:42,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 273 flow [2024-11-23 22:46:42,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:46:42,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:46:42,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-11-23 22:46:42,290 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35080645161290325 [2024-11-23 22:46:42,290 INFO L175 Difference]: Start difference. First operand has 61 places, 56 transitions, 191 flow. Second operand 4 states and 87 transitions. [2024-11-23 22:46:42,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 273 flow [2024-11-23 22:46:42,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 262 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-23 22:46:42,294 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 176 flow [2024-11-23 22:46:42,295 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-11-23 22:46:42,297 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2024-11-23 22:46:42,298 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 176 flow [2024-11-23 22:46:42,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 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 22:46:42,298 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:42,298 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:42,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-23 22:46:42,299 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:42,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:42,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1562834264, now seen corresponding path program 1 times [2024-11-23 22:46:42,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:42,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725377412] [2024-11-23 22:46:42,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:42,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:42,367 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 22:46:42,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:42,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725377412] [2024-11-23 22:46:42,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725377412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:42,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:42,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-23 22:46:42,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038549231] [2024-11-23 22:46:42,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:42,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:46:42,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:42,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:46:42,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:46:42,371 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-23 22:46:42,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 22:46:42,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:42,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-23 22:46:42,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:42,763 INFO L124 PetriNetUnfolderBase]: 1935/2981 cut-off events. [2024-11-23 22:46:42,763 INFO L125 PetriNetUnfolderBase]: For 412/412 co-relation queries the response was YES. [2024-11-23 22:46:42,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6246 conditions, 2981 events. 1935/2981 cut-off events. For 412/412 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 14272 event pairs, 695 based on Foata normal form. 77/2499 useless extension candidates. Maximal degree in co-relation 5993. Up to 2082 conditions per place. [2024-11-23 22:46:42,776 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 57 selfloop transitions, 2 changer transitions 3/68 dead transitions. [2024-11-23 22:46:42,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 68 transitions, 338 flow [2024-11-23 22:46:42,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:46:42,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 22:46:42,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 96 transitions. [2024-11-23 22:46:42,778 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-11-23 22:46:42,778 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 176 flow. Second operand 3 states and 96 transitions. [2024-11-23 22:46:42,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 68 transitions, 338 flow [2024-11-23 22:46:42,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 68 transitions, 333 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 22:46:42,784 INFO L231 Difference]: Finished difference. Result has 59 places, 51 transitions, 165 flow [2024-11-23 22:46:42,784 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=59, PETRI_TRANSITIONS=51} [2024-11-23 22:46:42,785 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2024-11-23 22:46:42,785 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 51 transitions, 165 flow [2024-11-23 22:46:42,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 22:46:42,785 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:42,785 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:42,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-23 22:46:42,785 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:42,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:42,786 INFO L85 PathProgramCache]: Analyzing trace with hash 639737360, now seen corresponding path program 1 times [2024-11-23 22:46:42,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:42,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479822625] [2024-11-23 22:46:42,786 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:42,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:42,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:46:42,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:42,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479822625] [2024-11-23 22:46:42,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479822625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:42,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:42,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 22:46:42,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426267504] [2024-11-23 22:46:42,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:42,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 22:46:42,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:42,864 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 22:46:42,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 22:46:42,864 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-23 22:46:42,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 51 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 22:46:42,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:42,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-23 22:46:42,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:43,189 INFO L124 PetriNetUnfolderBase]: 1664/2561 cut-off events. [2024-11-23 22:46:43,189 INFO L125 PetriNetUnfolderBase]: For 498/498 co-relation queries the response was YES. [2024-11-23 22:46:43,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5766 conditions, 2561 events. 1664/2561 cut-off events. For 498/498 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 11708 event pairs, 717 based on Foata normal form. 18/2226 useless extension candidates. Maximal degree in co-relation 5730. Up to 2249 conditions per place. [2024-11-23 22:46:43,204 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 52 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2024-11-23 22:46:43,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 61 transitions, 301 flow [2024-11-23 22:46:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 22:46:43,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-23 22:46:43,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-11-23 22:46:43,205 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-11-23 22:46:43,206 INFO L175 Difference]: Start difference. First operand has 59 places, 51 transitions, 165 flow. Second operand 3 states and 89 transitions. [2024-11-23 22:46:43,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 61 transitions, 301 flow [2024-11-23 22:46:43,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 61 transitions, 295 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-11-23 22:46:43,209 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 182 flow [2024-11-23 22:46:43,210 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2024-11-23 22:46:43,211 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2024-11-23 22:46:43,212 INFO L471 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 182 flow [2024-11-23 22:46:43,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 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 22:46:43,213 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:43,213 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:43,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-23 22:46:43,213 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:43,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:43,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2104842751, now seen corresponding path program 1 times [2024-11-23 22:46:43,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:43,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990171631] [2024-11-23 22:46:43,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:43,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:43,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:43,352 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 22:46:43,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:43,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990171631] [2024-11-23 22:46:43,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990171631] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:43,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:43,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:46:43,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63854454] [2024-11-23 22:46:43,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:43,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:46:43,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:43,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:46:43,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:46:43,375 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:46:43,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 22:46:43,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:43,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:46:43,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:43,652 INFO L124 PetriNetUnfolderBase]: 1256/1961 cut-off events. [2024-11-23 22:46:43,653 INFO L125 PetriNetUnfolderBase]: For 990/990 co-relation queries the response was YES. [2024-11-23 22:46:43,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4732 conditions, 1961 events. 1256/1961 cut-off events. For 990/990 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8603 event pairs, 929 based on Foata normal form. 0/1815 useless extension candidates. Maximal degree in co-relation 4695. Up to 1767 conditions per place. [2024-11-23 22:46:43,664 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 42 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2024-11-23 22:46:43,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 266 flow [2024-11-23 22:46:43,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:46:43,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:46:43,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2024-11-23 22:46:43,666 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-11-23 22:46:43,666 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 182 flow. Second operand 4 states and 84 transitions. [2024-11-23 22:46:43,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 266 flow [2024-11-23 22:46:43,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 51 transitions, 253 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-23 22:46:43,668 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 169 flow [2024-11-23 22:46:43,669 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-11-23 22:46:43,669 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2024-11-23 22:46:43,669 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 169 flow [2024-11-23 22:46:43,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 22:46:43,670 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:43,670 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:43,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-23 22:46:43,670 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:43,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:43,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1097813506, now seen corresponding path program 1 times [2024-11-23 22:46:43,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:43,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380110781] [2024-11-23 22:46:43,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:43,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:43,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 22:46:43,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:43,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380110781] [2024-11-23 22:46:43,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380110781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:43,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:43,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 22:46:43,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166316777] [2024-11-23 22:46:43,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:43,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:46:43,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:43,791 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:46:43,791 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 22:46:43,800 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-23 22:46:43,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 169 flow. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 22:46:43,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:43,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-23 22:46:43,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:44,173 INFO L124 PetriNetUnfolderBase]: 1497/2359 cut-off events. [2024-11-23 22:46:44,174 INFO L125 PetriNetUnfolderBase]: For 478/478 co-relation queries the response was YES. [2024-11-23 22:46:44,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5296 conditions, 2359 events. 1497/2359 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 10593 event pairs, 1131 based on Foata normal form. 64/2279 useless extension candidates. Maximal degree in co-relation 5259. Up to 1777 conditions per place. [2024-11-23 22:46:44,183 INFO L140 encePairwiseOnDemand]: 57/62 looper letters, 41 selfloop transitions, 3 changer transitions 19/69 dead transitions. [2024-11-23 22:46:44,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 69 transitions, 345 flow [2024-11-23 22:46:44,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:46:44,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:46:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2024-11-23 22:46:44,185 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4475806451612903 [2024-11-23 22:46:44,185 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 169 flow. Second operand 4 states and 111 transitions. [2024-11-23 22:46:44,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 69 transitions, 345 flow [2024-11-23 22:46:44,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 341 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 22:46:44,187 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 169 flow [2024-11-23 22:46:44,187 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=169, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2024-11-23 22:46:44,190 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2024-11-23 22:46:44,191 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 169 flow [2024-11-23 22:46:44,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 22:46:44,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:44,191 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:44,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-23 22:46:44,192 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:44,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:44,192 INFO L85 PathProgramCache]: Analyzing trace with hash 2074460432, now seen corresponding path program 1 times [2024-11-23 22:46:44,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:44,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601836766] [2024-11-23 22:46:44,193 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:44,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:44,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 22:46:44,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:44,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601836766] [2024-11-23 22:46:44,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601836766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:46:44,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065511743] [2024-11-23 22:46:44,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:44,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:46:44,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:46:44,558 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:46:44,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 22:46:44,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:44,674 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-23 22:46:44,677 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:46:44,808 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 22:46:44,808 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:46:44,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065511743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:44,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:46:44,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2024-11-23 22:46:44,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235141504] [2024-11-23 22:46:44,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:44,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 22:46:44,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:44,810 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 22:46:44,810 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:46:44,830 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-23 22:46:44,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 22:46:44,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:44,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-23 22:46:44,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:45,097 INFO L124 PetriNetUnfolderBase]: 901/1442 cut-off events. [2024-11-23 22:46:45,097 INFO L125 PetriNetUnfolderBase]: For 379/379 co-relation queries the response was YES. [2024-11-23 22:46:45,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3239 conditions, 1442 events. 901/1442 cut-off events. For 379/379 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 6076 event pairs, 653 based on Foata normal form. 97/1463 useless extension candidates. Maximal degree in co-relation 3200. Up to 1270 conditions per place. [2024-11-23 22:46:45,106 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 39 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2024-11-23 22:46:45,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 48 transitions, 245 flow [2024-11-23 22:46:45,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:46:45,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:46:45,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 90 transitions. [2024-11-23 22:46:45,108 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-11-23 22:46:45,108 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 169 flow. Second operand 4 states and 90 transitions. [2024-11-23 22:46:45,108 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 48 transitions, 245 flow [2024-11-23 22:46:45,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 48 transitions, 240 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-23 22:46:45,110 INFO L231 Difference]: Finished difference. Result has 57 places, 48 transitions, 162 flow [2024-11-23 22:46:45,110 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=57, PETRI_TRANSITIONS=48} [2024-11-23 22:46:45,111 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, -2 predicate places. [2024-11-23 22:46:45,112 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 48 transitions, 162 flow [2024-11-23 22:46:45,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 22:46:45,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:45,112 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:45,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-23 22:46:45,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:46:45,317 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:45,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:45,317 INFO L85 PathProgramCache]: Analyzing trace with hash 154104667, now seen corresponding path program 1 times [2024-11-23 22:46:45,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:45,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155538092] [2024-11-23 22:46:45,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:46:45,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:46,769 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:46:46,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:46,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155538092] [2024-11-23 22:46:46,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155538092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:46,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:46,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:46:46,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217600901] [2024-11-23 22:46:46,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:46,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:46:46,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:46,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:46:46,771 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:46:46,828 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:46:46,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 162 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:46:46,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:46,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:46:46,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:47,677 INFO L124 PetriNetUnfolderBase]: 1303/2122 cut-off events. [2024-11-23 22:46:47,677 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2024-11-23 22:46:47,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4707 conditions, 2122 events. 1303/2122 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 10331 event pairs, 135 based on Foata normal form. 1/2071 useless extension candidates. Maximal degree in co-relation 4667. Up to 1406 conditions per place. [2024-11-23 22:46:47,688 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 106 selfloop transitions, 25 changer transitions 3/139 dead transitions. [2024-11-23 22:46:47,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 139 transitions, 677 flow [2024-11-23 22:46:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:46:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-23 22:46:47,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 283 transitions. [2024-11-23 22:46:47,690 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3803763440860215 [2024-11-23 22:46:47,691 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 162 flow. Second operand 12 states and 283 transitions. [2024-11-23 22:46:47,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 139 transitions, 677 flow [2024-11-23 22:46:47,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 139 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 22:46:47,694 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 293 flow [2024-11-23 22:46:47,695 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=293, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2024-11-23 22:46:47,695 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 12 predicate places. [2024-11-23 22:46:47,695 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 293 flow [2024-11-23 22:46:47,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:46:47,696 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:47,696 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:47,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-23 22:46:47,696 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:47,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:47,697 INFO L85 PathProgramCache]: Analyzing trace with hash 987067271, now seen corresponding path program 2 times [2024-11-23 22:46:47,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:47,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206321600] [2024-11-23 22:46:47,698 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:46:47,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:47,772 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:46:47,773 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:46:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:46:48,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:48,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206321600] [2024-11-23 22:46:48,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206321600] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:48,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:48,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:46:48,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105103043] [2024-11-23 22:46:48,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:48,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:46:48,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:48,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:46:48,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:46:49,070 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:46:49,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 293 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:46:49,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:49,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:46:49,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:49,995 INFO L124 PetriNetUnfolderBase]: 1494/2431 cut-off events. [2024-11-23 22:46:49,995 INFO L125 PetriNetUnfolderBase]: For 1515/1515 co-relation queries the response was YES. [2024-11-23 22:46:50,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6636 conditions, 2431 events. 1494/2431 cut-off events. For 1515/1515 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 12084 event pairs, 367 based on Foata normal form. 1/2371 useless extension candidates. Maximal degree in co-relation 6592. Up to 1744 conditions per place. [2024-11-23 22:46:50,012 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 111 selfloop transitions, 35 changer transitions 3/154 dead transitions. [2024-11-23 22:46:50,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 154 transitions, 904 flow [2024-11-23 22:46:50,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:46:50,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:46:50,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 267 transitions. [2024-11-23 22:46:50,015 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3914956011730205 [2024-11-23 22:46:50,016 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 293 flow. Second operand 11 states and 267 transitions. [2024-11-23 22:46:50,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 154 transitions, 904 flow [2024-11-23 22:46:50,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 154 transitions, 899 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-23 22:46:50,023 INFO L231 Difference]: Finished difference. Result has 87 places, 93 transitions, 536 flow [2024-11-23 22:46:50,023 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=536, PETRI_PLACES=87, PETRI_TRANSITIONS=93} [2024-11-23 22:46:50,024 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 28 predicate places. [2024-11-23 22:46:50,024 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 93 transitions, 536 flow [2024-11-23 22:46:50,024 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:46:50,024 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:50,024 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:50,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-23 22:46:50,025 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:50,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:50,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1570957239, now seen corresponding path program 3 times [2024-11-23 22:46:50,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:50,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770790113] [2024-11-23 22:46:50,026 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:46:50,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:50,093 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:46:50,095 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:46:51,116 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:46:51,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:51,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770790113] [2024-11-23 22:46:51,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770790113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:51,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:51,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:46:51,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407446094] [2024-11-23 22:46:51,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:51,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:46:51,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:51,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:46:51,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:46:51,187 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:46:51,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 93 transitions, 536 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:46:51,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:51,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:46:51,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:52,241 INFO L124 PetriNetUnfolderBase]: 1661/2741 cut-off events. [2024-11-23 22:46:52,241 INFO L125 PetriNetUnfolderBase]: For 3653/3653 co-relation queries the response was YES. [2024-11-23 22:46:52,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8527 conditions, 2741 events. 1661/2741 cut-off events. For 3653/3653 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14418 event pairs, 302 based on Foata normal form. 1/2663 useless extension candidates. Maximal degree in co-relation 8474. Up to 1784 conditions per place. [2024-11-23 22:46:52,261 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 122 selfloop transitions, 43 changer transitions 3/173 dead transitions. [2024-11-23 22:46:52,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 173 transitions, 1183 flow [2024-11-23 22:46:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:46:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-23 22:46:52,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 287 transitions. [2024-11-23 22:46:52,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.385752688172043 [2024-11-23 22:46:52,264 INFO L175 Difference]: Start difference. First operand has 87 places, 93 transitions, 536 flow. Second operand 12 states and 287 transitions. [2024-11-23 22:46:52,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 173 transitions, 1183 flow [2024-11-23 22:46:52,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 173 transitions, 1167 flow, removed 8 selfloop flow, removed 0 redundant places. [2024-11-23 22:46:52,286 INFO L231 Difference]: Finished difference. Result has 101 places, 102 transitions, 694 flow [2024-11-23 22:46:52,287 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=694, PETRI_PLACES=101, PETRI_TRANSITIONS=102} [2024-11-23 22:46:52,288 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 42 predicate places. [2024-11-23 22:46:52,288 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 102 transitions, 694 flow [2024-11-23 22:46:52,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:46:52,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:52,289 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:52,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-23 22:46:52,289 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:52,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:52,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1541366859, now seen corresponding path program 4 times [2024-11-23 22:46:52,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:52,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849727262] [2024-11-23 22:46:52,291 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:46:52,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:52,366 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:46:52,366 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:46:53,342 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:46:53,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:53,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849727262] [2024-11-23 22:46:53,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849727262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:53,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:53,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:46:53,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238196152] [2024-11-23 22:46:53,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:53,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:46:53,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:53,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:46:53,348 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:46:53,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:46:53,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 102 transitions, 694 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 22:46:53,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:53,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:46:53,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:54,496 INFO L124 PetriNetUnfolderBase]: 1963/3216 cut-off events. [2024-11-23 22:46:54,496 INFO L125 PetriNetUnfolderBase]: For 6245/6245 co-relation queries the response was YES. [2024-11-23 22:46:54,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10642 conditions, 3216 events. 1963/3216 cut-off events. For 6245/6245 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 17391 event pairs, 492 based on Foata normal form. 1/3127 useless extension candidates. Maximal degree in co-relation 10584. Up to 2363 conditions per place. [2024-11-23 22:46:54,518 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 131 selfloop transitions, 39 changer transitions 3/177 dead transitions. [2024-11-23 22:46:54,518 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 177 transitions, 1349 flow [2024-11-23 22:46:54,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:46:54,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-23 22:46:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 273 transitions. [2024-11-23 22:46:54,523 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36693548387096775 [2024-11-23 22:46:54,524 INFO L175 Difference]: Start difference. First operand has 101 places, 102 transitions, 694 flow. Second operand 12 states and 273 transitions. [2024-11-23 22:46:54,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 177 transitions, 1349 flow [2024-11-23 22:46:54,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 177 transitions, 1271 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-11-23 22:46:54,555 INFO L231 Difference]: Finished difference. Result has 109 places, 108 transitions, 769 flow [2024-11-23 22:46:54,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=769, PETRI_PLACES=109, PETRI_TRANSITIONS=108} [2024-11-23 22:46:54,556 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 50 predicate places. [2024-11-23 22:46:54,557 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 108 transitions, 769 flow [2024-11-23 22:46:54,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 22:46:54,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:54,557 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:54,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-23 22:46:54,558 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:54,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:54,558 INFO L85 PathProgramCache]: Analyzing trace with hash 683730863, now seen corresponding path program 5 times [2024-11-23 22:46:54,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:54,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76750366] [2024-11-23 22:46:54,558 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 22:46:54,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:54,612 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-23 22:46:54,613 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:46:55,560 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:46:55,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:55,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76750366] [2024-11-23 22:46:55,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76750366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:55,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:55,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:46:55,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149258884] [2024-11-23 22:46:55,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:55,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:46:55,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:55,562 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:46:55,562 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:46:55,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:46:55,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 108 transitions, 769 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:46:55,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:55,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:46:55,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:56,407 INFO L124 PetriNetUnfolderBase]: 1765/2942 cut-off events. [2024-11-23 22:46:56,408 INFO L125 PetriNetUnfolderBase]: For 7364/7364 co-relation queries the response was YES. [2024-11-23 22:46:56,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10212 conditions, 2942 events. 1765/2942 cut-off events. For 7364/7364 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 15972 event pairs, 420 based on Foata normal form. 1/2859 useless extension candidates. Maximal degree in co-relation 10150. Up to 2205 conditions per place. [2024-11-23 22:46:56,421 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 125 selfloop transitions, 38 changer transitions 3/171 dead transitions. [2024-11-23 22:46:56,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 171 transitions, 1371 flow [2024-11-23 22:46:56,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:46:56,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-23 22:46:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 274 transitions. [2024-11-23 22:46:56,423 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-11-23 22:46:56,423 INFO L175 Difference]: Start difference. First operand has 109 places, 108 transitions, 769 flow. Second operand 12 states and 274 transitions. [2024-11-23 22:46:56,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 171 transitions, 1371 flow [2024-11-23 22:46:56,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 171 transitions, 1279 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-11-23 22:46:56,438 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 798 flow [2024-11-23 22:46:56,438 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=689, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=798, PETRI_PLACES=115, PETRI_TRANSITIONS=111} [2024-11-23 22:46:56,439 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 56 predicate places. [2024-11-23 22:46:56,439 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 798 flow [2024-11-23 22:46:56,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:46:56,439 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:56,439 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:56,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-23 22:46:56,440 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:56,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:56,440 INFO L85 PathProgramCache]: Analyzing trace with hash -736007861, now seen corresponding path program 6 times [2024-11-23 22:46:56,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:56,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449178767] [2024-11-23 22:46:56,441 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 22:46:56,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:56,477 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-23 22:46:56,477 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:46:57,313 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:46:57,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:57,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449178767] [2024-11-23 22:46:57,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449178767] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:57,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:57,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:46:57,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503298734] [2024-11-23 22:46:57,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:57,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:46:57,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:57,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:46:57,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:46:57,386 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:46:57,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 798 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:46:57,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:57,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:46:57,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:46:58,190 INFO L124 PetriNetUnfolderBase]: 1901/3178 cut-off events. [2024-11-23 22:46:58,190 INFO L125 PetriNetUnfolderBase]: For 8688/8688 co-relation queries the response was YES. [2024-11-23 22:46:58,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11198 conditions, 3178 events. 1901/3178 cut-off events. For 8688/8688 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 17725 event pairs, 603 based on Foata normal form. 1/3084 useless extension candidates. Maximal degree in co-relation 11133. Up to 2486 conditions per place. [2024-11-23 22:46:58,207 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 132 selfloop transitions, 36 changer transitions 3/176 dead transitions. [2024-11-23 22:46:58,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 176 transitions, 1495 flow [2024-11-23 22:46:58,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:46:58,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:46:58,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 258 transitions. [2024-11-23 22:46:58,209 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-11-23 22:46:58,209 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 798 flow. Second operand 11 states and 258 transitions. [2024-11-23 22:46:58,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 176 transitions, 1495 flow [2024-11-23 22:46:58,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 176 transitions, 1407 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-11-23 22:46:58,247 INFO L231 Difference]: Finished difference. Result has 121 places, 122 transitions, 943 flow [2024-11-23 22:46:58,247 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=943, PETRI_PLACES=121, PETRI_TRANSITIONS=122} [2024-11-23 22:46:58,248 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 62 predicate places. [2024-11-23 22:46:58,248 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 122 transitions, 943 flow [2024-11-23 22:46:58,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:46:58,249 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:46:58,249 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:46:58,250 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-23 22:46:58,250 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:46:58,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:46:58,251 INFO L85 PathProgramCache]: Analyzing trace with hash 440013493, now seen corresponding path program 7 times [2024-11-23 22:46:58,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:46:58,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144171154] [2024-11-23 22:46:58,251 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 22:46:58,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:46:58,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:46:59,379 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:46:59,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:46:59,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144171154] [2024-11-23 22:46:59,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144171154] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:46:59,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:46:59,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:46:59,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437846986] [2024-11-23 22:46:59,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:46:59,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:46:59,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:46:59,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:46:59,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:46:59,473 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:46:59,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 122 transitions, 943 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:46:59,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:46:59,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:46:59,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:00,409 INFO L124 PetriNetUnfolderBase]: 2027/3410 cut-off events. [2024-11-23 22:47:00,409 INFO L125 PetriNetUnfolderBase]: For 13454/13454 co-relation queries the response was YES. [2024-11-23 22:47:00,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12631 conditions, 3410 events. 2027/3410 cut-off events. For 13454/13454 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 19441 event pairs, 600 based on Foata normal form. 1/3310 useless extension candidates. Maximal degree in co-relation 12561. Up to 2677 conditions per place. [2024-11-23 22:47:00,429 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 141 selfloop transitions, 36 changer transitions 3/185 dead transitions. [2024-11-23 22:47:00,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 185 transitions, 1676 flow [2024-11-23 22:47:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 255 transitions. [2024-11-23 22:47:00,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37390029325513197 [2024-11-23 22:47:00,431 INFO L175 Difference]: Start difference. First operand has 121 places, 122 transitions, 943 flow. Second operand 11 states and 255 transitions. [2024-11-23 22:47:00,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 185 transitions, 1676 flow [2024-11-23 22:47:00,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 185 transitions, 1589 flow, removed 36 selfloop flow, removed 2 redundant places. [2024-11-23 22:47:00,480 INFO L231 Difference]: Finished difference. Result has 133 places, 131 transitions, 1089 flow [2024-11-23 22:47:00,480 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=856, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1089, PETRI_PLACES=133, PETRI_TRANSITIONS=131} [2024-11-23 22:47:00,481 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 74 predicate places. [2024-11-23 22:47:00,481 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 131 transitions, 1089 flow [2024-11-23 22:47:00,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:00,481 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:00,481 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:00,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-23 22:47:00,482 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:00,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:00,482 INFO L85 PathProgramCache]: Analyzing trace with hash 831967917, now seen corresponding path program 8 times [2024-11-23 22:47:00,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:00,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529666457] [2024-11-23 22:47:00,483 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:47:00,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:00,517 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:47:00,518 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:01,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:01,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529666457] [2024-11-23 22:47:01,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529666457] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:01,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:01,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:01,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335275133] [2024-11-23 22:47:01,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:01,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:01,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:01,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:01,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:01,445 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:01,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 131 transitions, 1089 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:01,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:01,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:01,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:02,312 INFO L124 PetriNetUnfolderBase]: 2159/3637 cut-off events. [2024-11-23 22:47:02,312 INFO L125 PetriNetUnfolderBase]: For 21349/21349 co-relation queries the response was YES. [2024-11-23 22:47:02,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14398 conditions, 3637 events. 2159/3637 cut-off events. For 21349/21349 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 21227 event pairs, 673 based on Foata normal form. 1/3541 useless extension candidates. Maximal degree in co-relation 14323. Up to 2881 conditions per place. [2024-11-23 22:47:02,336 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 152 selfloop transitions, 36 changer transitions 3/196 dead transitions. [2024-11-23 22:47:02,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 196 transitions, 1880 flow [2024-11-23 22:47:02,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:02,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:02,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 257 transitions. [2024-11-23 22:47:02,338 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37683284457478006 [2024-11-23 22:47:02,338 INFO L175 Difference]: Start difference. First operand has 133 places, 131 transitions, 1089 flow. Second operand 11 states and 257 transitions. [2024-11-23 22:47:02,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 196 transitions, 1880 flow [2024-11-23 22:47:02,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 196 transitions, 1752 flow, removed 47 selfloop flow, removed 5 redundant places. [2024-11-23 22:47:02,401 INFO L231 Difference]: Finished difference. Result has 141 places, 140 transitions, 1179 flow [2024-11-23 22:47:02,402 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=961, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1179, PETRI_PLACES=141, PETRI_TRANSITIONS=140} [2024-11-23 22:47:02,402 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 82 predicate places. [2024-11-23 22:47:02,402 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 140 transitions, 1179 flow [2024-11-23 22:47:02,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:02,402 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:02,402 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:02,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-23 22:47:02,403 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:02,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:02,403 INFO L85 PathProgramCache]: Analyzing trace with hash -315121537, now seen corresponding path program 9 times [2024-11-23 22:47:02,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:02,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188298143] [2024-11-23 22:47:02,404 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:47:02,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:02,443 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:47:02,443 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:03,236 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:03,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:03,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188298143] [2024-11-23 22:47:03,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188298143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:03,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:03,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:03,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787628141] [2024-11-23 22:47:03,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:03,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:03,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:03,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:03,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:03,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:03,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 140 transitions, 1179 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:03,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:03,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:03,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:04,609 INFO L124 PetriNetUnfolderBase]: 2346/3945 cut-off events. [2024-11-23 22:47:04,609 INFO L125 PetriNetUnfolderBase]: For 28216/28216 co-relation queries the response was YES. [2024-11-23 22:47:04,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16332 conditions, 3945 events. 2346/3945 cut-off events. For 28216/28216 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 23456 event pairs, 725 based on Foata normal form. 1/3837 useless extension candidates. Maximal degree in co-relation 16253. Up to 3093 conditions per place. [2024-11-23 22:47:04,639 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 166 selfloop transitions, 39 changer transitions 3/213 dead transitions. [2024-11-23 22:47:04,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 213 transitions, 2077 flow [2024-11-23 22:47:04,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:04,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:04,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2024-11-23 22:47:04,640 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-11-23 22:47:04,641 INFO L175 Difference]: Start difference. First operand has 141 places, 140 transitions, 1179 flow. Second operand 11 states and 268 transitions. [2024-11-23 22:47:04,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 213 transitions, 2077 flow [2024-11-23 22:47:04,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 213 transitions, 1943 flow, removed 50 selfloop flow, removed 5 redundant places. [2024-11-23 22:47:04,711 INFO L231 Difference]: Finished difference. Result has 150 places, 149 transitions, 1314 flow [2024-11-23 22:47:04,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1314, PETRI_PLACES=150, PETRI_TRANSITIONS=149} [2024-11-23 22:47:04,712 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 91 predicate places. [2024-11-23 22:47:04,712 INFO L471 AbstractCegarLoop]: Abstraction has has 150 places, 149 transitions, 1314 flow [2024-11-23 22:47:04,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:04,713 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:04,713 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:04,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-23 22:47:04,713 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:04,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:04,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1968839951, now seen corresponding path program 10 times [2024-11-23 22:47:04,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:04,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239918051] [2024-11-23 22:47:04,715 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:47:04,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:04,776 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:47:04,778 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:05,427 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:05,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:05,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239918051] [2024-11-23 22:47:05,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239918051] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:05,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:05,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:05,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483648018] [2024-11-23 22:47:05,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:05,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:05,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:05,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:05,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:05,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:47:05,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 149 transitions, 1314 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 22:47:05,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:05,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:47:05,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:06,392 INFO L124 PetriNetUnfolderBase]: 2605/4325 cut-off events. [2024-11-23 22:47:06,392 INFO L125 PetriNetUnfolderBase]: For 34976/34976 co-relation queries the response was YES. [2024-11-23 22:47:06,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18211 conditions, 4325 events. 2605/4325 cut-off events. For 34976/34976 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 25771 event pairs, 921 based on Foata normal form. 1/4213 useless extension candidates. Maximal degree in co-relation 18127. Up to 3605 conditions per place. [2024-11-23 22:47:06,423 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 158 selfloop transitions, 36 changer transitions 4/202 dead transitions. [2024-11-23 22:47:06,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 202 transitions, 2010 flow [2024-11-23 22:47:06,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:06,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 238 transitions. [2024-11-23 22:47:06,425 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-11-23 22:47:06,425 INFO L175 Difference]: Start difference. First operand has 150 places, 149 transitions, 1314 flow. Second operand 11 states and 238 transitions. [2024-11-23 22:47:06,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 202 transitions, 2010 flow [2024-11-23 22:47:06,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 202 transitions, 1870 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-11-23 22:47:06,496 INFO L231 Difference]: Finished difference. Result has 158 places, 155 transitions, 1343 flow [2024-11-23 22:47:06,496 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1174, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1343, PETRI_PLACES=158, PETRI_TRANSITIONS=155} [2024-11-23 22:47:06,497 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 99 predicate places. [2024-11-23 22:47:06,497 INFO L471 AbstractCegarLoop]: Abstraction has has 158 places, 155 transitions, 1343 flow [2024-11-23 22:47:06,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 22:47:06,497 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:06,497 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:06,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-23 22:47:06,498 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:06,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:06,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1822795627, now seen corresponding path program 11 times [2024-11-23 22:47:06,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:06,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619506511] [2024-11-23 22:47:06,499 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 22:47:06,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:06,530 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-23 22:47:06,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:07,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:07,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:07,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619506511] [2024-11-23 22:47:07,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619506511] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:07,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:07,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:07,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440237489] [2024-11-23 22:47:07,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:07,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:07,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:07,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:07,357 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:07,462 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:07,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 155 transitions, 1343 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:07,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:07,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:07,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:08,468 INFO L124 PetriNetUnfolderBase]: 2558/4297 cut-off events. [2024-11-23 22:47:08,469 INFO L125 PetriNetUnfolderBase]: For 34211/34211 co-relation queries the response was YES. [2024-11-23 22:47:08,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18185 conditions, 4297 events. 2558/4297 cut-off events. For 34211/34211 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 26231 event pairs, 855 based on Foata normal form. 1/4195 useless extension candidates. Maximal degree in co-relation 18096. Up to 3387 conditions per place. [2024-11-23 22:47:08,506 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 167 selfloop transitions, 42 changer transitions 3/217 dead transitions. [2024-11-23 22:47:08,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 217 transitions, 2215 flow [2024-11-23 22:47:08,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:08,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:08,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 258 transitions. [2024-11-23 22:47:08,507 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-11-23 22:47:08,507 INFO L175 Difference]: Start difference. First operand has 158 places, 155 transitions, 1343 flow. Second operand 11 states and 258 transitions. [2024-11-23 22:47:08,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 217 transitions, 2215 flow [2024-11-23 22:47:08,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 217 transitions, 2105 flow, removed 35 selfloop flow, removed 6 redundant places. [2024-11-23 22:47:08,613 INFO L231 Difference]: Finished difference. Result has 165 places, 162 transitions, 1508 flow [2024-11-23 22:47:08,614 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1508, PETRI_PLACES=165, PETRI_TRANSITIONS=162} [2024-11-23 22:47:08,614 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 106 predicate places. [2024-11-23 22:47:08,614 INFO L471 AbstractCegarLoop]: Abstraction has has 165 places, 162 transitions, 1508 flow [2024-11-23 22:47:08,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:08,615 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:08,615 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:08,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-23 22:47:08,615 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:08,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:08,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1035560727, now seen corresponding path program 12 times [2024-11-23 22:47:08,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:08,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933078461] [2024-11-23 22:47:08,617 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 22:47:08,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:08,661 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-23 22:47:08,661 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:09,268 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:09,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:09,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933078461] [2024-11-23 22:47:09,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933078461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:09,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:09,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:09,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868736860] [2024-11-23 22:47:09,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:09,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:09,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:09,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:09,270 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:09,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:09,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 162 transitions, 1508 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:09,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:09,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:09,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:10,512 INFO L124 PetriNetUnfolderBase]: 2558/4291 cut-off events. [2024-11-23 22:47:10,512 INFO L125 PetriNetUnfolderBase]: For 41122/41130 co-relation queries the response was YES. [2024-11-23 22:47:10,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18807 conditions, 4291 events. 2558/4291 cut-off events. For 41122/41130 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 26232 event pairs, 862 based on Foata normal form. 3/4193 useless extension candidates. Maximal degree in co-relation 18714. Up to 3425 conditions per place. [2024-11-23 22:47:10,543 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 175 selfloop transitions, 41 changer transitions 5/226 dead transitions. [2024-11-23 22:47:10,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 226 transitions, 2300 flow [2024-11-23 22:47:10,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:10,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 266 transitions. [2024-11-23 22:47:10,545 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39002932551319647 [2024-11-23 22:47:10,545 INFO L175 Difference]: Start difference. First operand has 165 places, 162 transitions, 1508 flow. Second operand 11 states and 266 transitions. [2024-11-23 22:47:10,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 226 transitions, 2300 flow [2024-11-23 22:47:10,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 226 transitions, 2132 flow, removed 64 selfloop flow, removed 6 redundant places. [2024-11-23 22:47:10,666 INFO L231 Difference]: Finished difference. Result has 171 places, 166 transitions, 1473 flow [2024-11-23 22:47:10,667 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1340, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1473, PETRI_PLACES=171, PETRI_TRANSITIONS=166} [2024-11-23 22:47:10,667 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 112 predicate places. [2024-11-23 22:47:10,667 INFO L471 AbstractCegarLoop]: Abstraction has has 171 places, 166 transitions, 1473 flow [2024-11-23 22:47:10,667 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:10,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:10,668 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:10,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-23 22:47:10,668 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:10,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:10,669 INFO L85 PathProgramCache]: Analyzing trace with hash 883643887, now seen corresponding path program 13 times [2024-11-23 22:47:10,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:10,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972703273] [2024-11-23 22:47:10,669 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 22:47:10,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:10,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:47:11,306 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:11,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:11,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972703273] [2024-11-23 22:47:11,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972703273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:11,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:11,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:11,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17302497] [2024-11-23 22:47:11,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:11,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:11,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:11,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:11,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:11,351 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:11,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 166 transitions, 1473 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:11,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:11,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:11,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:12,523 INFO L124 PetriNetUnfolderBase]: 2558/4293 cut-off events. [2024-11-23 22:47:12,524 INFO L125 PetriNetUnfolderBase]: For 35618/35618 co-relation queries the response was YES. [2024-11-23 22:47:12,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18300 conditions, 4293 events. 2558/4293 cut-off events. For 35618/35618 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 26136 event pairs, 891 based on Foata normal form. 1/4191 useless extension candidates. Maximal degree in co-relation 18204. Up to 3541 conditions per place. [2024-11-23 22:47:12,584 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 170 selfloop transitions, 41 changer transitions 4/220 dead transitions. [2024-11-23 22:47:12,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 220 transitions, 2194 flow [2024-11-23 22:47:12,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:12,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:12,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 253 transitions. [2024-11-23 22:47:12,586 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-11-23 22:47:12,586 INFO L175 Difference]: Start difference. First operand has 171 places, 166 transitions, 1473 flow. Second operand 11 states and 253 transitions. [2024-11-23 22:47:12,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 220 transitions, 2194 flow [2024-11-23 22:47:12,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 220 transitions, 2087 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-11-23 22:47:12,749 INFO L231 Difference]: Finished difference. Result has 176 places, 170 transitions, 1512 flow [2024-11-23 22:47:12,749 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1366, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1512, PETRI_PLACES=176, PETRI_TRANSITIONS=170} [2024-11-23 22:47:12,750 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 117 predicate places. [2024-11-23 22:47:12,750 INFO L471 AbstractCegarLoop]: Abstraction has has 176 places, 170 transitions, 1512 flow [2024-11-23 22:47:12,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:12,750 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:12,750 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:12,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-23 22:47:12,751 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:12,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:12,752 INFO L85 PathProgramCache]: Analyzing trace with hash 45605427, now seen corresponding path program 14 times [2024-11-23 22:47:12,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:12,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176368833] [2024-11-23 22:47:12,752 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:47:12,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:12,837 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:47:12,837 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:13,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:13,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176368833] [2024-11-23 22:47:13,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176368833] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:13,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:13,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:13,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825428648] [2024-11-23 22:47:13,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:13,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:13,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:13,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:13,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:13,579 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:13,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 170 transitions, 1512 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:13,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:13,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:13,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:14,710 INFO L124 PetriNetUnfolderBase]: 2594/4360 cut-off events. [2024-11-23 22:47:14,710 INFO L125 PetriNetUnfolderBase]: For 35838/35838 co-relation queries the response was YES. [2024-11-23 22:47:14,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18459 conditions, 4360 events. 2594/4360 cut-off events. For 35838/35838 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 26726 event pairs, 953 based on Foata normal form. 1/4259 useless extension candidates. Maximal degree in co-relation 18360. Up to 3675 conditions per place. [2024-11-23 22:47:14,735 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 174 selfloop transitions, 37 changer transitions 3/219 dead transitions. [2024-11-23 22:47:14,735 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 219 transitions, 2208 flow [2024-11-23 22:47:14,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:14,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:14,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 247 transitions. [2024-11-23 22:47:14,736 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3621700879765396 [2024-11-23 22:47:14,736 INFO L175 Difference]: Start difference. First operand has 176 places, 170 transitions, 1512 flow. Second operand 11 states and 247 transitions. [2024-11-23 22:47:14,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 219 transitions, 2208 flow [2024-11-23 22:47:14,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 219 transitions, 2084 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-11-23 22:47:14,813 INFO L231 Difference]: Finished difference. Result has 180 places, 173 transitions, 1514 flow [2024-11-23 22:47:14,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1388, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1514, PETRI_PLACES=180, PETRI_TRANSITIONS=173} [2024-11-23 22:47:14,814 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 121 predicate places. [2024-11-23 22:47:14,814 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 173 transitions, 1514 flow [2024-11-23 22:47:14,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:14,815 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:14,815 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:14,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-23 22:47:14,815 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:14,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:14,816 INFO L85 PathProgramCache]: Analyzing trace with hash -610316069, now seen corresponding path program 15 times [2024-11-23 22:47:14,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:14,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405900653] [2024-11-23 22:47:14,816 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:47:14,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:14,848 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:47:14,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:15,502 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:15,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:15,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405900653] [2024-11-23 22:47:15,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405900653] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:15,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:15,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:15,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048391155] [2024-11-23 22:47:15,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:15,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:15,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:15,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:15,505 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:15,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:15,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 173 transitions, 1514 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:15,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:15,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:15,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:16,720 INFO L124 PetriNetUnfolderBase]: 2594/4368 cut-off events. [2024-11-23 22:47:16,720 INFO L125 PetriNetUnfolderBase]: For 35238/35238 co-relation queries the response was YES. [2024-11-23 22:47:16,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18334 conditions, 4368 events. 2594/4368 cut-off events. For 35238/35238 co-relation queries the response was YES. Maximal size of possible extension queue 298. Compared 26845 event pairs, 960 based on Foata normal form. 1/4262 useless extension candidates. Maximal degree in co-relation 18233. Up to 3688 conditions per place. [2024-11-23 22:47:16,749 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 176 selfloop transitions, 35 changer transitions 3/219 dead transitions. [2024-11-23 22:47:16,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 219 transitions, 2182 flow [2024-11-23 22:47:16,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:16,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 244 transitions. [2024-11-23 22:47:16,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-11-23 22:47:16,751 INFO L175 Difference]: Start difference. First operand has 180 places, 173 transitions, 1514 flow. Second operand 11 states and 244 transitions. [2024-11-23 22:47:16,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 219 transitions, 2182 flow [2024-11-23 22:47:16,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 219 transitions, 2074 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-11-23 22:47:16,832 INFO L231 Difference]: Finished difference. Result has 184 places, 175 transitions, 1502 flow [2024-11-23 22:47:16,833 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1502, PETRI_PLACES=184, PETRI_TRANSITIONS=175} [2024-11-23 22:47:16,833 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 125 predicate places. [2024-11-23 22:47:16,833 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 175 transitions, 1502 flow [2024-11-23 22:47:16,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:16,834 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:16,834 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:16,834 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-23 22:47:16,834 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:16,835 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:16,835 INFO L85 PathProgramCache]: Analyzing trace with hash -2075951581, now seen corresponding path program 16 times [2024-11-23 22:47:16,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:16,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732811667] [2024-11-23 22:47:16,835 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:47:16,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:16,872 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:47:16,873 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:17,677 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:17,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:17,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732811667] [2024-11-23 22:47:17,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732811667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:17,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:17,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:17,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976697447] [2024-11-23 22:47:17,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:17,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:17,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:17,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:17,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:17,719 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:47:17,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 175 transitions, 1502 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 22:47:17,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:17,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:47:17,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:18,798 INFO L124 PetriNetUnfolderBase]: 3031/5049 cut-off events. [2024-11-23 22:47:18,798 INFO L125 PetriNetUnfolderBase]: For 49112/49112 co-relation queries the response was YES. [2024-11-23 22:47:18,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22062 conditions, 5049 events. 3031/5049 cut-off events. For 49112/49112 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 31670 event pairs, 1080 based on Foata normal form. 1/4934 useless extension candidates. Maximal degree in co-relation 21959. Up to 3965 conditions per place. [2024-11-23 22:47:18,828 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 205 selfloop transitions, 44 changer transitions 3/256 dead transitions. [2024-11-23 22:47:18,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 256 transitions, 2647 flow [2024-11-23 22:47:18,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:47:18,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-23 22:47:18,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 275 transitions. [2024-11-23 22:47:18,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3696236559139785 [2024-11-23 22:47:18,830 INFO L175 Difference]: Start difference. First operand has 184 places, 175 transitions, 1502 flow. Second operand 12 states and 275 transitions. [2024-11-23 22:47:18,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 256 transitions, 2647 flow [2024-11-23 22:47:18,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 256 transitions, 2579 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-23 22:47:18,987 INFO L231 Difference]: Finished difference. Result has 191 places, 187 transitions, 1787 flow [2024-11-23 22:47:18,987 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1434, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1787, PETRI_PLACES=191, PETRI_TRANSITIONS=187} [2024-11-23 22:47:18,988 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 132 predicate places. [2024-11-23 22:47:18,988 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 187 transitions, 1787 flow [2024-11-23 22:47:18,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 22:47:18,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:18,988 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:18,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-23 22:47:18,988 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:18,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:18,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1490350639, now seen corresponding path program 17 times [2024-11-23 22:47:18,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:18,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734438860] [2024-11-23 22:47:18,989 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 22:47:18,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:19,020 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-23 22:47:19,021 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:19,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:19,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:19,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734438860] [2024-11-23 22:47:19,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734438860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:19,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:19,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:19,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508945033] [2024-11-23 22:47:19,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:19,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:19,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:19,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:19,661 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:19,710 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:19,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 187 transitions, 1787 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:19,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:19,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:19,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:20,896 INFO L124 PetriNetUnfolderBase]: 3034/5118 cut-off events. [2024-11-23 22:47:20,896 INFO L125 PetriNetUnfolderBase]: For 63555/63555 co-relation queries the response was YES. [2024-11-23 22:47:20,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23970 conditions, 5118 events. 3034/5118 cut-off events. For 63555/63555 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 32976 event pairs, 984 based on Foata normal form. 1/5006 useless extension candidates. Maximal degree in co-relation 23863. Up to 3910 conditions per place. [2024-11-23 22:47:20,950 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 201 selfloop transitions, 54 changer transitions 3/263 dead transitions. [2024-11-23 22:47:20,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 263 transitions, 2994 flow [2024-11-23 22:47:20,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:47:20,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-23 22:47:20,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 284 transitions. [2024-11-23 22:47:20,952 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-11-23 22:47:20,952 INFO L175 Difference]: Start difference. First operand has 191 places, 187 transitions, 1787 flow. Second operand 12 states and 284 transitions. [2024-11-23 22:47:20,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 263 transitions, 2994 flow [2024-11-23 22:47:21,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 263 transitions, 2750 flow, removed 105 selfloop flow, removed 5 redundant places. [2024-11-23 22:47:21,120 INFO L231 Difference]: Finished difference. Result has 201 places, 198 transitions, 1958 flow [2024-11-23 22:47:21,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1569, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1958, PETRI_PLACES=201, PETRI_TRANSITIONS=198} [2024-11-23 22:47:21,121 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 142 predicate places. [2024-11-23 22:47:21,121 INFO L471 AbstractCegarLoop]: Abstraction has has 201 places, 198 transitions, 1958 flow [2024-11-23 22:47:21,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:21,121 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:21,121 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:21,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-23 22:47:21,122 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:21,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:21,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1669471445, now seen corresponding path program 18 times [2024-11-23 22:47:21,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:21,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301460726] [2024-11-23 22:47:21,122 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 22:47:21,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:21,160 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-23 22:47:21,160 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:21,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:21,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:21,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301460726] [2024-11-23 22:47:21,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301460726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:21,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:21,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:21,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219768378] [2024-11-23 22:47:21,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:21,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:21,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:21,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:21,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:21,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:21,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 198 transitions, 1958 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:21,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:21,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:21,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:23,217 INFO L124 PetriNetUnfolderBase]: 3130/5282 cut-off events. [2024-11-23 22:47:23,217 INFO L125 PetriNetUnfolderBase]: For 74989/74989 co-relation queries the response was YES. [2024-11-23 22:47:23,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25394 conditions, 5282 events. 3130/5282 cut-off events. For 74989/74989 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 34253 event pairs, 1104 based on Foata normal form. 1/5170 useless extension candidates. Maximal degree in co-relation 25282. Up to 4182 conditions per place. [2024-11-23 22:47:23,271 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 210 selfloop transitions, 49 changer transitions 3/267 dead transitions. [2024-11-23 22:47:23,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 267 transitions, 3048 flow [2024-11-23 22:47:23,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:47:23,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-23 22:47:23,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 281 transitions. [2024-11-23 22:47:23,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37768817204301075 [2024-11-23 22:47:23,273 INFO L175 Difference]: Start difference. First operand has 201 places, 198 transitions, 1958 flow. Second operand 12 states and 281 transitions. [2024-11-23 22:47:23,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 267 transitions, 3048 flow [2024-11-23 22:47:23,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 267 transitions, 2839 flow, removed 80 selfloop flow, removed 7 redundant places. [2024-11-23 22:47:23,511 INFO L231 Difference]: Finished difference. Result has 208 places, 204 transitions, 2017 flow [2024-11-23 22:47:23,512 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1749, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2017, PETRI_PLACES=208, PETRI_TRANSITIONS=204} [2024-11-23 22:47:23,512 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 149 predicate places. [2024-11-23 22:47:23,512 INFO L471 AbstractCegarLoop]: Abstraction has has 208 places, 204 transitions, 2017 flow [2024-11-23 22:47:23,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:23,513 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:23,513 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:23,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-23 22:47:23,513 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:23,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:23,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1754877227, now seen corresponding path program 19 times [2024-11-23 22:47:23,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:23,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707423959] [2024-11-23 22:47:23,514 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 22:47:23,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:23,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:47:24,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:24,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:24,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707423959] [2024-11-23 22:47:24,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707423959] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:24,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:24,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:24,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820562635] [2024-11-23 22:47:24,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:24,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:24,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:24,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:24,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:24,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:24,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 204 transitions, 2017 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:24,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:24,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:24,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:25,757 INFO L124 PetriNetUnfolderBase]: 3130/5290 cut-off events. [2024-11-23 22:47:25,757 INFO L125 PetriNetUnfolderBase]: For 75138/75138 co-relation queries the response was YES. [2024-11-23 22:47:25,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25293 conditions, 5290 events. 3130/5290 cut-off events. For 75138/75138 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 34385 event pairs, 1113 based on Foata normal form. 1/5178 useless extension candidates. Maximal degree in co-relation 25178. Up to 4259 conditions per place. [2024-11-23 22:47:25,812 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 207 selfloop transitions, 51 changer transitions 4/267 dead transitions. [2024-11-23 22:47:25,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 267 transitions, 2981 flow [2024-11-23 22:47:25,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 22:47:25,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-23 22:47:25,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 278 transitions. [2024-11-23 22:47:25,815 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-11-23 22:47:25,815 INFO L175 Difference]: Start difference. First operand has 208 places, 204 transitions, 2017 flow. Second operand 12 states and 278 transitions. [2024-11-23 22:47:25,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 267 transitions, 2981 flow [2024-11-23 22:47:26,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 267 transitions, 2820 flow, removed 55 selfloop flow, removed 8 redundant places. [2024-11-23 22:47:26,152 INFO L231 Difference]: Finished difference. Result has 213 places, 208 transitions, 2036 flow [2024-11-23 22:47:26,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1856, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2036, PETRI_PLACES=213, PETRI_TRANSITIONS=208} [2024-11-23 22:47:26,153 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 154 predicate places. [2024-11-23 22:47:26,153 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 208 transitions, 2036 flow [2024-11-23 22:47:26,153 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:26,153 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:26,154 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:26,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-23 22:47:26,154 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:26,154 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:26,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1402179503, now seen corresponding path program 20 times [2024-11-23 22:47:26,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:26,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721464441] [2024-11-23 22:47:26,155 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:47:26,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:26,183 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:47:26,184 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:26,848 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:26,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:26,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721464441] [2024-11-23 22:47:26,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721464441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:26,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:26,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:26,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147260300] [2024-11-23 22:47:26,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:26,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:26,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:26,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:26,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:26,900 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:26,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 208 transitions, 2036 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:26,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:26,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:26,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:28,132 INFO L124 PetriNetUnfolderBase]: 3357/5657 cut-off events. [2024-11-23 22:47:28,132 INFO L125 PetriNetUnfolderBase]: For 86758/86758 co-relation queries the response was YES. [2024-11-23 22:47:28,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28117 conditions, 5657 events. 3357/5657 cut-off events. For 86758/86758 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 37302 event pairs, 1345 based on Foata normal form. 1/5532 useless extension candidates. Maximal degree in co-relation 28000. Up to 4708 conditions per place. [2024-11-23 22:47:28,188 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 237 selfloop transitions, 39 changer transitions 3/284 dead transitions. [2024-11-23 22:47:28,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 284 transitions, 3367 flow [2024-11-23 22:47:28,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:28,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:28,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 271 transitions. [2024-11-23 22:47:28,190 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3973607038123167 [2024-11-23 22:47:28,190 INFO L175 Difference]: Start difference. First operand has 213 places, 208 transitions, 2036 flow. Second operand 11 states and 271 transitions. [2024-11-23 22:47:28,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 284 transitions, 3367 flow [2024-11-23 22:47:28,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 284 transitions, 3203 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-11-23 22:47:28,453 INFO L231 Difference]: Finished difference. Result has 218 places, 220 transitions, 2296 flow [2024-11-23 22:47:28,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2296, PETRI_PLACES=218, PETRI_TRANSITIONS=220} [2024-11-23 22:47:28,454 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 159 predicate places. [2024-11-23 22:47:28,454 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 220 transitions, 2296 flow [2024-11-23 22:47:28,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:28,454 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:28,454 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:28,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-23 22:47:28,455 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:28,455 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:28,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2054461755, now seen corresponding path program 21 times [2024-11-23 22:47:28,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:28,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383798978] [2024-11-23 22:47:28,456 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:47:28,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:28,485 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:47:28,485 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:29,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383798978] [2024-11-23 22:47:29,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383798978] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:29,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:29,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:29,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146166929] [2024-11-23 22:47:29,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:29,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:29,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:29,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:29,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:29,048 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:29,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 220 transitions, 2296 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:29,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:29,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:29,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:30,277 INFO L124 PetriNetUnfolderBase]: 3418/5765 cut-off events. [2024-11-23 22:47:30,278 INFO L125 PetriNetUnfolderBase]: For 97177/97177 co-relation queries the response was YES. [2024-11-23 22:47:30,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29086 conditions, 5765 events. 3418/5765 cut-off events. For 97177/97177 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 38203 event pairs, 1449 based on Foata normal form. 1/5642 useless extension candidates. Maximal degree in co-relation 28965. Up to 4978 conditions per place. [2024-11-23 22:47:30,334 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 227 selfloop transitions, 36 changer transitions 4/272 dead transitions. [2024-11-23 22:47:30,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 272 transitions, 3272 flow [2024-11-23 22:47:30,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:30,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:30,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 250 transitions. [2024-11-23 22:47:30,335 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-11-23 22:47:30,335 INFO L175 Difference]: Start difference. First operand has 218 places, 220 transitions, 2296 flow. Second operand 11 states and 250 transitions. [2024-11-23 22:47:30,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 272 transitions, 3272 flow [2024-11-23 22:47:30,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 272 transitions, 3028 flow, removed 106 selfloop flow, removed 4 redundant places. [2024-11-23 22:47:30,565 INFO L231 Difference]: Finished difference. Result has 227 places, 226 transitions, 2281 flow [2024-11-23 22:47:30,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2072, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2281, PETRI_PLACES=227, PETRI_TRANSITIONS=226} [2024-11-23 22:47:30,566 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 168 predicate places. [2024-11-23 22:47:30,566 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 226 transitions, 2281 flow [2024-11-23 22:47:30,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:30,566 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:30,566 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:30,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-23 22:47:30,567 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:30,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:30,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1908417431, now seen corresponding path program 22 times [2024-11-23 22:47:30,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:30,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999224194] [2024-11-23 22:47:30,567 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:47:30,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:30,596 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:47:30,596 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:31,285 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:31,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:31,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999224194] [2024-11-23 22:47:31,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999224194] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:31,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:31,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:31,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851354355] [2024-11-23 22:47:31,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:31,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:31,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:31,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:31,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:31,357 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:47:31,358 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 226 transitions, 2281 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 22:47:31,358 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:31,358 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:47:31,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:32,795 INFO L124 PetriNetUnfolderBase]: 3773/6310 cut-off events. [2024-11-23 22:47:32,795 INFO L125 PetriNetUnfolderBase]: For 92740/92740 co-relation queries the response was YES. [2024-11-23 22:47:32,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30962 conditions, 6310 events. 3773/6310 cut-off events. For 92740/92740 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 42136 event pairs, 1544 based on Foata normal form. 1/6180 useless extension candidates. Maximal degree in co-relation 30836. Up to 5247 conditions per place. [2024-11-23 22:47:32,866 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 247 selfloop transitions, 44 changer transitions 3/298 dead transitions. [2024-11-23 22:47:32,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 298 transitions, 3573 flow [2024-11-23 22:47:32,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:32,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 261 transitions. [2024-11-23 22:47:32,867 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38269794721407624 [2024-11-23 22:47:32,868 INFO L175 Difference]: Start difference. First operand has 227 places, 226 transitions, 2281 flow. Second operand 11 states and 261 transitions. [2024-11-23 22:47:32,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 298 transitions, 3573 flow [2024-11-23 22:47:33,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 298 transitions, 3425 flow, removed 54 selfloop flow, removed 6 redundant places. [2024-11-23 22:47:33,153 INFO L231 Difference]: Finished difference. Result has 235 places, 235 transitions, 2539 flow [2024-11-23 22:47:33,153 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2133, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2539, PETRI_PLACES=235, PETRI_TRANSITIONS=235} [2024-11-23 22:47:33,153 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 176 predicate places. [2024-11-23 22:47:33,154 INFO L471 AbstractCegarLoop]: Abstraction has has 235 places, 235 transitions, 2539 flow [2024-11-23 22:47:33,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 22:47:33,154 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:33,154 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:33,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-23 22:47:33,154 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:33,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:33,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1584605475, now seen corresponding path program 23 times [2024-11-23 22:47:33,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:33,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683094705] [2024-11-23 22:47:33,155 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 22:47:33,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:33,174 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-23 22:47:33,175 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:33,887 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:33,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:33,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683094705] [2024-11-23 22:47:33,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683094705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:33,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:33,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:33,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879216484] [2024-11-23 22:47:33,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:33,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:33,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:33,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:33,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:33,939 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:33,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 235 transitions, 2539 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:33,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:33,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:33,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:35,374 INFO L124 PetriNetUnfolderBase]: 3688/6246 cut-off events. [2024-11-23 22:47:35,375 INFO L125 PetriNetUnfolderBase]: For 109488/109488 co-relation queries the response was YES. [2024-11-23 22:47:35,440 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31889 conditions, 6246 events. 3688/6246 cut-off events. For 109488/109488 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 42472 event pairs, 1563 based on Foata normal form. 1/6115 useless extension candidates. Maximal degree in co-relation 31758. Up to 5343 conditions per place. [2024-11-23 22:47:35,458 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 256 selfloop transitions, 35 changer transitions 3/299 dead transitions. [2024-11-23 22:47:35,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 299 transitions, 3843 flow [2024-11-23 22:47:35,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:35,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:35,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-11-23 22:47:35,459 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-11-23 22:47:35,459 INFO L175 Difference]: Start difference. First operand has 235 places, 235 transitions, 2539 flow. Second operand 11 states and 260 transitions. [2024-11-23 22:47:35,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 299 transitions, 3843 flow [2024-11-23 22:47:35,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 299 transitions, 3603 flow, removed 101 selfloop flow, removed 5 redundant places. [2024-11-23 22:47:35,740 INFO L231 Difference]: Finished difference. Result has 244 places, 242 transitions, 2637 flow [2024-11-23 22:47:35,740 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2305, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2637, PETRI_PLACES=244, PETRI_TRANSITIONS=242} [2024-11-23 22:47:35,740 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 185 predicate places. [2024-11-23 22:47:35,740 INFO L471 AbstractCegarLoop]: Abstraction has has 244 places, 242 transitions, 2637 flow [2024-11-23 22:47:35,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:35,741 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:35,741 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:35,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-23 22:47:35,741 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:35,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:35,741 INFO L85 PathProgramCache]: Analyzing trace with hash 544784293, now seen corresponding path program 24 times [2024-11-23 22:47:35,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:35,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212259798] [2024-11-23 22:47:35,742 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 22:47:35,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:35,766 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-23 22:47:35,767 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:36,499 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:36,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:36,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212259798] [2024-11-23 22:47:36,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212259798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:36,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:36,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:36,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119453963] [2024-11-23 22:47:36,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:36,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:36,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:36,502 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:36,502 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:36,543 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:36,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 242 transitions, 2637 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:36,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:36,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:36,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:37,966 INFO L124 PetriNetUnfolderBase]: 3814/6479 cut-off events. [2024-11-23 22:47:37,966 INFO L125 PetriNetUnfolderBase]: For 123542/123542 co-relation queries the response was YES. [2024-11-23 22:47:38,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33189 conditions, 6479 events. 3814/6479 cut-off events. For 123542/123542 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 44572 event pairs, 1624 based on Foata normal form. 1/6339 useless extension candidates. Maximal degree in co-relation 33052. Up to 5524 conditions per place. [2024-11-23 22:47:38,045 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 266 selfloop transitions, 37 changer transitions 3/311 dead transitions. [2024-11-23 22:47:38,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 311 transitions, 3957 flow [2024-11-23 22:47:38,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:38,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 263 transitions. [2024-11-23 22:47:38,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38563049853372433 [2024-11-23 22:47:38,046 INFO L175 Difference]: Start difference. First operand has 244 places, 242 transitions, 2637 flow. Second operand 11 states and 263 transitions. [2024-11-23 22:47:38,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 311 transitions, 3957 flow [2024-11-23 22:47:38,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 311 transitions, 3729 flow, removed 97 selfloop flow, removed 5 redundant places. [2024-11-23 22:47:38,415 INFO L231 Difference]: Finished difference. Result has 253 places, 250 transitions, 2744 flow [2024-11-23 22:47:38,416 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2409, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2744, PETRI_PLACES=253, PETRI_TRANSITIONS=250} [2024-11-23 22:47:38,416 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 194 predicate places. [2024-11-23 22:47:38,416 INFO L471 AbstractCegarLoop]: Abstraction has has 253 places, 250 transitions, 2744 flow [2024-11-23 22:47:38,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:38,416 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:38,416 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:38,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-23 22:47:38,417 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:38,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:38,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1660782743, now seen corresponding path program 25 times [2024-11-23 22:47:38,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:38,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082762695] [2024-11-23 22:47:38,417 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 22:47:38,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:47:39,047 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:39,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:39,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082762695] [2024-11-23 22:47:39,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082762695] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:39,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:39,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:39,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002261514] [2024-11-23 22:47:39,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:39,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:39,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:39,049 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:39,049 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:39,081 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:39,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 250 transitions, 2744 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:39,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:39,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:39,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:40,383 INFO L124 PetriNetUnfolderBase]: 3814/6485 cut-off events. [2024-11-23 22:47:40,383 INFO L125 PetriNetUnfolderBase]: For 124680/124704 co-relation queries the response was YES. [2024-11-23 22:47:40,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33026 conditions, 6485 events. 3814/6485 cut-off events. For 124680/124704 co-relation queries the response was YES. Maximal size of possible extension queue 537. Compared 44874 event pairs, 1626 based on Foata normal form. 3/6338 useless extension candidates. Maximal degree in co-relation 32884. Up to 5632 conditions per place. [2024-11-23 22:47:40,451 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 260 selfloop transitions, 34 changer transitions 3/302 dead transitions. [2024-11-23 22:47:40,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 302 transitions, 3797 flow [2024-11-23 22:47:40,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:40,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 251 transitions. [2024-11-23 22:47:40,453 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3680351906158358 [2024-11-23 22:47:40,453 INFO L175 Difference]: Start difference. First operand has 253 places, 250 transitions, 2744 flow. Second operand 11 states and 251 transitions. [2024-11-23 22:47:40,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 302 transitions, 3797 flow [2024-11-23 22:47:40,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 302 transitions, 3613 flow, removed 80 selfloop flow, removed 5 redundant places. [2024-11-23 22:47:40,741 INFO L231 Difference]: Finished difference. Result has 260 places, 253 transitions, 2693 flow [2024-11-23 22:47:40,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2693, PETRI_PLACES=260, PETRI_TRANSITIONS=253} [2024-11-23 22:47:40,742 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 201 predicate places. [2024-11-23 22:47:40,742 INFO L471 AbstractCegarLoop]: Abstraction has has 260 places, 253 transitions, 2693 flow [2024-11-23 22:47:40,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:40,742 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:40,742 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:40,742 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-23 22:47:40,742 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:40,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:40,743 INFO L85 PathProgramCache]: Analyzing trace with hash 917589721, now seen corresponding path program 26 times [2024-11-23 22:47:40,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:40,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192273210] [2024-11-23 22:47:40,743 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:47:40,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:40,764 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:47:40,764 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:41,366 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:41,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:41,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192273210] [2024-11-23 22:47:41,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192273210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:41,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:41,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:41,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835516530] [2024-11-23 22:47:41,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:41,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:41,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:41,368 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:41,368 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:41,407 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:41,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 253 transitions, 2693 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:41,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:41,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:41,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:42,752 INFO L124 PetriNetUnfolderBase]: 3910/6650 cut-off events. [2024-11-23 22:47:42,752 INFO L125 PetriNetUnfolderBase]: For 128909/128909 co-relation queries the response was YES. [2024-11-23 22:47:42,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34061 conditions, 6650 events. 3910/6650 cut-off events. For 128909/128909 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 46105 event pairs, 1712 based on Foata normal form. 1/6509 useless extension candidates. Maximal degree in co-relation 33916. Up to 5715 conditions per place. [2024-11-23 22:47:42,823 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 271 selfloop transitions, 36 changer transitions 3/315 dead transitions. [2024-11-23 22:47:42,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 315 transitions, 3982 flow [2024-11-23 22:47:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:42,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:42,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-11-23 22:47:42,824 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-11-23 22:47:42,824 INFO L175 Difference]: Start difference. First operand has 260 places, 253 transitions, 2693 flow. Second operand 11 states and 260 transitions. [2024-11-23 22:47:42,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 315 transitions, 3982 flow [2024-11-23 22:47:43,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 315 transitions, 3854 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-11-23 22:47:43,170 INFO L231 Difference]: Finished difference. Result has 265 places, 259 transitions, 2844 flow [2024-11-23 22:47:43,170 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2565, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2844, PETRI_PLACES=265, PETRI_TRANSITIONS=259} [2024-11-23 22:47:43,171 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 206 predicate places. [2024-11-23 22:47:43,171 INFO L471 AbstractCegarLoop]: Abstraction has has 265 places, 259 transitions, 2844 flow [2024-11-23 22:47:43,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:43,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:43,171 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:43,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-23 22:47:43,171 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:43,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:43,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1390640789, now seen corresponding path program 27 times [2024-11-23 22:47:43,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:43,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657236774] [2024-11-23 22:47:43,173 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:47:43,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:43,193 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:47:43,193 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:43,553 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:43,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:43,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657236774] [2024-11-23 22:47:43,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657236774] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:43,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:43,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:43,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761069371] [2024-11-23 22:47:43,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:43,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:43,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:43,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:43,555 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:43,598 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:43,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 259 transitions, 2844 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:43,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:43,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:43,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:44,868 INFO L124 PetriNetUnfolderBase]: 3910/6653 cut-off events. [2024-11-23 22:47:44,868 INFO L125 PetriNetUnfolderBase]: For 137930/137930 co-relation queries the response was YES. [2024-11-23 22:47:44,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34447 conditions, 6653 events. 3910/6653 cut-off events. For 137930/137930 co-relation queries the response was YES. Maximal size of possible extension queue 548. Compared 46181 event pairs, 1681 based on Foata normal form. 1/6512 useless extension candidates. Maximal degree in co-relation 34299. Up to 5633 conditions per place. [2024-11-23 22:47:44,940 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 272 selfloop transitions, 41 changer transitions 5/323 dead transitions. [2024-11-23 22:47:44,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 323 transitions, 3992 flow [2024-11-23 22:47:44,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:44,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 269 transitions. [2024-11-23 22:47:44,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3944281524926686 [2024-11-23 22:47:44,941 INFO L175 Difference]: Start difference. First operand has 265 places, 259 transitions, 2844 flow. Second operand 11 states and 269 transitions. [2024-11-23 22:47:44,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 323 transitions, 3992 flow [2024-11-23 22:47:45,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 323 transitions, 3788 flow, removed 83 selfloop flow, removed 6 redundant places. [2024-11-23 22:47:45,243 INFO L231 Difference]: Finished difference. Result has 271 places, 263 transitions, 2795 flow [2024-11-23 22:47:45,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2640, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2795, PETRI_PLACES=271, PETRI_TRANSITIONS=263} [2024-11-23 22:47:45,243 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 212 predicate places. [2024-11-23 22:47:45,243 INFO L471 AbstractCegarLoop]: Abstraction has has 271 places, 263 transitions, 2795 flow [2024-11-23 22:47:45,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:45,244 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:45,244 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:45,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-23 22:47:45,244 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:45,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:45,245 INFO L85 PathProgramCache]: Analyzing trace with hash 689830807, now seen corresponding path program 28 times [2024-11-23 22:47:45,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:45,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809075608] [2024-11-23 22:47:45,245 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:47:45,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:45,268 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:47:45,269 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:45,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:45,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809075608] [2024-11-23 22:47:45,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809075608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:45,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:45,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:45,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827486527] [2024-11-23 22:47:45,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:45,680 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:45,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:45,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:45,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:45,699 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:47:45,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 263 transitions, 2795 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 22:47:45,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:45,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:47:45,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:47,085 INFO L124 PetriNetUnfolderBase]: 4108/6923 cut-off events. [2024-11-23 22:47:47,085 INFO L125 PetriNetUnfolderBase]: For 137127/137127 co-relation queries the response was YES. [2024-11-23 22:47:47,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35379 conditions, 6923 events. 4108/6923 cut-off events. For 137127/137127 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 47704 event pairs, 1748 based on Foata normal form. 1/6776 useless extension candidates. Maximal degree in co-relation 35228. Up to 5805 conditions per place. [2024-11-23 22:47:47,158 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 272 selfloop transitions, 46 changer transitions 5/327 dead transitions. [2024-11-23 22:47:47,158 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 327 transitions, 3901 flow [2024-11-23 22:47:47,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:47,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:47,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-11-23 22:47:47,159 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-11-23 22:47:47,159 INFO L175 Difference]: Start difference. First operand has 271 places, 263 transitions, 2795 flow. Second operand 11 states and 260 transitions. [2024-11-23 22:47:47,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 327 transitions, 3901 flow [2024-11-23 22:47:47,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 327 transitions, 3766 flow, removed 32 selfloop flow, removed 7 redundant places. [2024-11-23 22:47:47,567 INFO L231 Difference]: Finished difference. Result has 276 places, 267 transitions, 2836 flow [2024-11-23 22:47:47,567 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2660, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2836, PETRI_PLACES=276, PETRI_TRANSITIONS=267} [2024-11-23 22:47:47,567 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 217 predicate places. [2024-11-23 22:47:47,568 INFO L471 AbstractCegarLoop]: Abstraction has has 276 places, 267 transitions, 2836 flow [2024-11-23 22:47:47,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 22:47:47,568 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:47,568 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:47,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-23 22:47:47,568 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:47,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:47,569 INFO L85 PathProgramCache]: Analyzing trace with hash 131227231, now seen corresponding path program 29 times [2024-11-23 22:47:47,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:47,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055804047] [2024-11-23 22:47:47,569 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 22:47:47,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:47,586 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-23 22:47:47,586 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:48,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:48,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055804047] [2024-11-23 22:47:48,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055804047] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:48,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:48,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:48,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988364675] [2024-11-23 22:47:48,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:48,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:48,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:48,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:48,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:48,174 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:48,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 267 transitions, 2836 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:48,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:48,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:48,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:49,454 INFO L124 PetriNetUnfolderBase]: 3946/6734 cut-off events. [2024-11-23 22:47:49,454 INFO L125 PetriNetUnfolderBase]: For 130637/130661 co-relation queries the response was YES. [2024-11-23 22:47:49,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34035 conditions, 6734 events. 3946/6734 cut-off events. For 130637/130661 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 47370 event pairs, 1737 based on Foata normal form. 3/6584 useless extension candidates. Maximal degree in co-relation 33881. Up to 5883 conditions per place. [2024-11-23 22:47:49,532 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 271 selfloop transitions, 37 changer transitions 3/316 dead transitions. [2024-11-23 22:47:49,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 316 transitions, 3868 flow [2024-11-23 22:47:49,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:49,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:49,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 250 transitions. [2024-11-23 22:47:49,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-11-23 22:47:49,533 INFO L175 Difference]: Start difference. First operand has 276 places, 267 transitions, 2836 flow. Second operand 11 states and 250 transitions. [2024-11-23 22:47:49,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 316 transitions, 3868 flow [2024-11-23 22:47:49,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 316 transitions, 3715 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-11-23 22:47:49,888 INFO L231 Difference]: Finished difference. Result has 281 places, 270 transitions, 2831 flow [2024-11-23 22:47:49,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2683, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2831, PETRI_PLACES=281, PETRI_TRANSITIONS=270} [2024-11-23 22:47:49,888 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 222 predicate places. [2024-11-23 22:47:49,888 INFO L471 AbstractCegarLoop]: Abstraction has has 281 places, 270 transitions, 2831 flow [2024-11-23 22:47:49,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:49,889 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:49,889 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:49,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-23 22:47:49,889 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:49,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash -524694265, now seen corresponding path program 30 times [2024-11-23 22:47:49,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:49,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213099255] [2024-11-23 22:47:49,890 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 22:47:49,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:49,923 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-23 22:47:49,923 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:50,354 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:50,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:50,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213099255] [2024-11-23 22:47:50,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213099255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:50,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:50,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:50,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101032844] [2024-11-23 22:47:50,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:50,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:50,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:50,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:50,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:50,380 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:50,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 270 transitions, 2831 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:50,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:50,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:50,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:51,773 INFO L124 PetriNetUnfolderBase]: 3946/6726 cut-off events. [2024-11-23 22:47:51,773 INFO L125 PetriNetUnfolderBase]: For 126244/126244 co-relation queries the response was YES. [2024-11-23 22:47:51,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33758 conditions, 6726 events. 3946/6726 cut-off events. For 126244/126244 co-relation queries the response was YES. Maximal size of possible extension queue 557. Compared 46988 event pairs, 1776 based on Foata normal form. 1/6581 useless extension candidates. Maximal degree in co-relation 33601. Up to 5896 conditions per place. [2024-11-23 22:47:51,875 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 273 selfloop transitions, 35 changer transitions 3/316 dead transitions. [2024-11-23 22:47:51,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 316 transitions, 3813 flow [2024-11-23 22:47:51,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:51,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 247 transitions. [2024-11-23 22:47:51,877 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3621700879765396 [2024-11-23 22:47:51,877 INFO L175 Difference]: Start difference. First operand has 281 places, 270 transitions, 2831 flow. Second operand 11 states and 247 transitions. [2024-11-23 22:47:51,877 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 316 transitions, 3813 flow [2024-11-23 22:47:52,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 316 transitions, 3685 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-11-23 22:47:52,225 INFO L231 Difference]: Finished difference. Result has 285 places, 272 transitions, 2799 flow [2024-11-23 22:47:52,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2705, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2799, PETRI_PLACES=285, PETRI_TRANSITIONS=272} [2024-11-23 22:47:52,226 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 226 predicate places. [2024-11-23 22:47:52,226 INFO L471 AbstractCegarLoop]: Abstraction has has 285 places, 272 transitions, 2799 flow [2024-11-23 22:47:52,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:52,227 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:52,227 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:52,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-23 22:47:52,227 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:52,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:52,227 INFO L85 PathProgramCache]: Analyzing trace with hash 743081979, now seen corresponding path program 31 times [2024-11-23 22:47:52,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:52,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455153078] [2024-11-23 22:47:52,228 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 22:47:52,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:52,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:47:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:52,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:52,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455153078] [2024-11-23 22:47:52,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455153078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:52,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:52,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:52,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662616765] [2024-11-23 22:47:52,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:52,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:52,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:52,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:52,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:52,811 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:52,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 272 transitions, 2799 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:52,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:52,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:52,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:54,167 INFO L124 PetriNetUnfolderBase]: 4077/6963 cut-off events. [2024-11-23 22:47:54,168 INFO L125 PetriNetUnfolderBase]: For 144743/144767 co-relation queries the response was YES. [2024-11-23 22:47:54,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35709 conditions, 6963 events. 4077/6963 cut-off events. For 144743/144767 co-relation queries the response was YES. Maximal size of possible extension queue 593. Compared 49433 event pairs, 1770 based on Foata normal form. 3/6805 useless extension candidates. Maximal degree in co-relation 35550. Up to 6009 conditions per place. [2024-11-23 22:47:54,257 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 289 selfloop transitions, 35 changer transitions 3/332 dead transitions. [2024-11-23 22:47:54,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 332 transitions, 4308 flow [2024-11-23 22:47:54,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:54,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:54,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 257 transitions. [2024-11-23 22:47:54,258 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37683284457478006 [2024-11-23 22:47:54,258 INFO L175 Difference]: Start difference. First operand has 285 places, 272 transitions, 2799 flow. Second operand 11 states and 257 transitions. [2024-11-23 22:47:54,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 332 transitions, 4308 flow [2024-11-23 22:47:54,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 287 places, 332 transitions, 4240 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-11-23 22:47:54,565 INFO L231 Difference]: Finished difference. Result has 291 places, 281 transitions, 3218 flow [2024-11-23 22:47:54,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2731, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3218, PETRI_PLACES=291, PETRI_TRANSITIONS=281} [2024-11-23 22:47:54,565 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 232 predicate places. [2024-11-23 22:47:54,565 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 281 transitions, 3218 flow [2024-11-23 22:47:54,566 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:54,566 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:54,566 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:54,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-23 22:47:54,566 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:54,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:54,567 INFO L85 PathProgramCache]: Analyzing trace with hash -363908027, now seen corresponding path program 32 times [2024-11-23 22:47:54,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:54,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207544410] [2024-11-23 22:47:54,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:47:54,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:54,585 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:47:54,585 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:55,119 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:55,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:55,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207544410] [2024-11-23 22:47:55,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207544410] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:55,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:55,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:55,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699061621] [2024-11-23 22:47:55,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:55,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:55,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:55,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:55,120 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:55,155 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:55,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 281 transitions, 3218 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:55,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:55,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:55,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:56,824 INFO L124 PetriNetUnfolderBase]: 4260/7254 cut-off events. [2024-11-23 22:47:56,825 INFO L125 PetriNetUnfolderBase]: For 195080/195080 co-relation queries the response was YES. [2024-11-23 22:47:56,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39805 conditions, 7254 events. 4260/7254 cut-off events. For 195080/195080 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 51521 event pairs, 1861 based on Foata normal form. 1/7089 useless extension candidates. Maximal degree in co-relation 39642. Up to 6198 conditions per place. [2024-11-23 22:47:56,877 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 307 selfloop transitions, 38 changer transitions 3/353 dead transitions. [2024-11-23 22:47:56,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 353 transitions, 4851 flow [2024-11-23 22:47:56,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:56,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 270 transitions. [2024-11-23 22:47:56,878 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-11-23 22:47:56,878 INFO L175 Difference]: Start difference. First operand has 291 places, 281 transitions, 3218 flow. Second operand 11 states and 270 transitions. [2024-11-23 22:47:56,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 353 transitions, 4851 flow [2024-11-23 22:47:57,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 353 transitions, 4509 flow, removed 155 selfloop flow, removed 5 redundant places. [2024-11-23 22:47:57,207 INFO L231 Difference]: Finished difference. Result has 301 places, 292 transitions, 3394 flow [2024-11-23 22:47:57,208 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2876, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3394, PETRI_PLACES=301, PETRI_TRANSITIONS=292} [2024-11-23 22:47:57,208 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 242 predicate places. [2024-11-23 22:47:57,208 INFO L471 AbstractCegarLoop]: Abstraction has has 301 places, 292 transitions, 3394 flow [2024-11-23 22:47:57,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:57,208 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:47:57,209 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:47:57,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-23 22:47:57,209 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:47:57,209 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:47:57,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1421906027, now seen corresponding path program 33 times [2024-11-23 22:47:57,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:47:57,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400631101] [2024-11-23 22:47:57,210 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:47:57,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:47:57,226 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:47:57,226 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:47:57,585 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:47:57,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:47:57,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400631101] [2024-11-23 22:47:57,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400631101] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:47:57,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:47:57,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:47:57,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783646744] [2024-11-23 22:47:57,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:47:57,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:47:57,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:47:57,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:47:57,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:47:57,628 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:47:57,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 292 transitions, 3394 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:47:57,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:47:57,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:47:57,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:47:59,368 INFO L124 PetriNetUnfolderBase]: 4321/7362 cut-off events. [2024-11-23 22:47:59,368 INFO L125 PetriNetUnfolderBase]: For 201569/201569 co-relation queries the response was YES. [2024-11-23 22:47:59,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40215 conditions, 7362 events. 4321/7362 cut-off events. For 201569/201569 co-relation queries the response was YES. Maximal size of possible extension queue 633. Compared 52551 event pairs, 1965 based on Foata normal form. 1/7199 useless extension candidates. Maximal degree in co-relation 40046. Up to 6468 conditions per place. [2024-11-23 22:47:59,658 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 297 selfloop transitions, 35 changer transitions 4/341 dead transitions. [2024-11-23 22:47:59,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 341 transitions, 4558 flow [2024-11-23 22:47:59,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:47:59,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:47:59,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 249 transitions. [2024-11-23 22:47:59,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3651026392961877 [2024-11-23 22:47:59,660 INFO L175 Difference]: Start difference. First operand has 301 places, 292 transitions, 3394 flow. Second operand 11 states and 249 transitions. [2024-11-23 22:47:59,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 341 transitions, 4558 flow [2024-11-23 22:48:00,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 341 transitions, 4252 flow, removed 138 selfloop flow, removed 4 redundant places. [2024-11-23 22:48:00,289 INFO L231 Difference]: Finished difference. Result has 310 places, 298 transitions, 3347 flow [2024-11-23 22:48:00,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3088, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3347, PETRI_PLACES=310, PETRI_TRANSITIONS=298} [2024-11-23 22:48:00,290 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 251 predicate places. [2024-11-23 22:48:00,290 INFO L471 AbstractCegarLoop]: Abstraction has has 310 places, 298 transitions, 3347 flow [2024-11-23 22:48:00,290 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:48:00,290 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:48:00,290 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:00,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-23 22:48:00,291 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:48:00,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:00,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1275861703, now seen corresponding path program 34 times [2024-11-23 22:48:00,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:00,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746529277] [2024-11-23 22:48:00,292 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:48:00,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:00,318 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:48:00,318 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:48:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:48:00,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:00,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746529277] [2024-11-23 22:48:00,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746529277] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:00,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:00,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:48:00,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248748618] [2024-11-23 22:48:00,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:00,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:48:00,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:00,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:48:00,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:48:00,805 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:48:00,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 298 transitions, 3347 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 22:48:00,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:48:00,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:48:00,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:48:02,929 INFO L124 PetriNetUnfolderBase]: 4691/7920 cut-off events. [2024-11-23 22:48:02,929 INFO L125 PetriNetUnfolderBase]: For 216439/216439 co-relation queries the response was YES. [2024-11-23 22:48:02,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42972 conditions, 7920 events. 4691/7920 cut-off events. For 216439/216439 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 56518 event pairs, 2097 based on Foata normal form. 1/7756 useless extension candidates. Maximal degree in co-relation 42798. Up to 6737 conditions per place. [2024-11-23 22:48:03,009 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 318 selfloop transitions, 43 changer transitions 3/368 dead transitions. [2024-11-23 22:48:03,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 368 transitions, 4971 flow [2024-11-23 22:48:03,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:48:03,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:48:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 261 transitions. [2024-11-23 22:48:03,011 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.38269794721407624 [2024-11-23 22:48:03,011 INFO L175 Difference]: Start difference. First operand has 310 places, 298 transitions, 3347 flow. Second operand 11 states and 261 transitions. [2024-11-23 22:48:03,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 368 transitions, 4971 flow [2024-11-23 22:48:03,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 314 places, 368 transitions, 4751 flow, removed 91 selfloop flow, removed 6 redundant places. [2024-11-23 22:48:03,784 INFO L231 Difference]: Finished difference. Result has 318 places, 307 transitions, 3657 flow [2024-11-23 22:48:03,785 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3127, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3657, PETRI_PLACES=318, PETRI_TRANSITIONS=307} [2024-11-23 22:48:03,785 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 259 predicate places. [2024-11-23 22:48:03,785 INFO L471 AbstractCegarLoop]: Abstraction has has 318 places, 307 transitions, 3657 flow [2024-11-23 22:48:03,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 22:48:03,785 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:48:03,785 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:03,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-23 22:48:03,786 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:48:03,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:03,786 INFO L85 PathProgramCache]: Analyzing trace with hash 525762897, now seen corresponding path program 35 times [2024-11-23 22:48:03,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:03,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841762122] [2024-11-23 22:48:03,787 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 22:48:03,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:03,813 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-23 22:48:03,813 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:48:04,501 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:48:04,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:04,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841762122] [2024-11-23 22:48:04,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841762122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:04,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:04,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:48:04,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241056978] [2024-11-23 22:48:04,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:04,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:48:04,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:04,503 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:48:04,503 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:48:04,532 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:48:04,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 307 transitions, 3657 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:48:04,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:48:04,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:48:04,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:48:06,730 INFO L124 PetriNetUnfolderBase]: 4556/7755 cut-off events. [2024-11-23 22:48:06,730 INFO L125 PetriNetUnfolderBase]: For 238263/238263 co-relation queries the response was YES. [2024-11-23 22:48:06,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43291 conditions, 7755 events. 4556/7755 cut-off events. For 238263/238263 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 56022 event pairs, 2093 based on Foata normal form. 1/7595 useless extension candidates. Maximal degree in co-relation 43112. Up to 6759 conditions per place. [2024-11-23 22:48:06,792 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 324 selfloop transitions, 34 changer transitions 3/366 dead transitions. [2024-11-23 22:48:06,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 366 transitions, 5116 flow [2024-11-23 22:48:06,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:48:06,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:48:06,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 259 transitions. [2024-11-23 22:48:06,793 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37976539589442815 [2024-11-23 22:48:06,793 INFO L175 Difference]: Start difference. First operand has 318 places, 307 transitions, 3657 flow. Second operand 11 states and 259 transitions. [2024-11-23 22:48:06,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 366 transitions, 5116 flow [2024-11-23 22:48:07,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 366 transitions, 4782 flow, removed 149 selfloop flow, removed 5 redundant places. [2024-11-23 22:48:07,507 INFO L231 Difference]: Finished difference. Result has 326 places, 312 transitions, 3639 flow [2024-11-23 22:48:07,508 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3327, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3639, PETRI_PLACES=326, PETRI_TRANSITIONS=312} [2024-11-23 22:48:07,508 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 267 predicate places. [2024-11-23 22:48:07,508 INFO L471 AbstractCegarLoop]: Abstraction has has 326 places, 312 transitions, 3639 flow [2024-11-23 22:48:07,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:48:07,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:48:07,509 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:07,509 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-23 22:48:07,509 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:48:07,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:07,510 INFO L85 PathProgramCache]: Analyzing trace with hash 2001628825, now seen corresponding path program 36 times [2024-11-23 22:48:07,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:07,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690837351] [2024-11-23 22:48:07,510 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-23 22:48:07,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:07,537 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2024-11-23 22:48:07,537 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:48:08,130 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:48:08,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:08,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690837351] [2024-11-23 22:48:08,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690837351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:08,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:08,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:48:08,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667298506] [2024-11-23 22:48:08,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:08,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:48:08,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:08,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:48:08,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:48:08,163 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:48:08,164 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 312 transitions, 3639 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:48:08,164 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:48:08,164 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:48:08,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:48:10,347 INFO L124 PetriNetUnfolderBase]: 4556/7747 cut-off events. [2024-11-23 22:48:10,347 INFO L125 PetriNetUnfolderBase]: For 226017/226017 co-relation queries the response was YES. [2024-11-23 22:48:10,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42117 conditions, 7747 events. 4556/7747 cut-off events. For 226017/226017 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 55976 event pairs, 2117 based on Foata normal form. 1/7591 useless extension candidates. Maximal degree in co-relation 41933. Up to 6836 conditions per place. [2024-11-23 22:48:10,409 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 320 selfloop transitions, 33 changer transitions 3/361 dead transitions. [2024-11-23 22:48:10,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 361 transitions, 4844 flow [2024-11-23 22:48:10,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:48:10,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:48:10,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 250 transitions. [2024-11-23 22:48:10,410 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-11-23 22:48:10,411 INFO L175 Difference]: Start difference. First operand has 326 places, 312 transitions, 3639 flow. Second operand 11 states and 250 transitions. [2024-11-23 22:48:10,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 361 transitions, 4844 flow [2024-11-23 22:48:11,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 361 transitions, 4595 flow, removed 107 selfloop flow, removed 6 redundant places. [2024-11-23 22:48:11,188 INFO L231 Difference]: Finished difference. Result has 332 places, 315 transitions, 3541 flow [2024-11-23 22:48:11,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3390, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=280, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3541, PETRI_PLACES=332, PETRI_TRANSITIONS=315} [2024-11-23 22:48:11,188 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 273 predicate places. [2024-11-23 22:48:11,189 INFO L471 AbstractCegarLoop]: Abstraction has has 332 places, 315 transitions, 3541 flow [2024-11-23 22:48:11,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:48:11,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:48:11,189 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:11,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-23 22:48:11,189 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:48:11,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:11,190 INFO L85 PathProgramCache]: Analyzing trace with hash 285033993, now seen corresponding path program 37 times [2024-11-23 22:48:11,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:11,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184567221] [2024-11-23 22:48:11,190 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-23 22:48:11,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:11,878 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:48:11,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:11,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184567221] [2024-11-23 22:48:11,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184567221] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:11,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:11,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:48:11,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925616410] [2024-11-23 22:48:11,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:11,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:48:11,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:11,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:48:11,879 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:48:11,910 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:48:11,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 315 transitions, 3541 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:48:11,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:48:11,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:48:11,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:48:14,208 INFO L124 PetriNetUnfolderBase]: 4619/7863 cut-off events. [2024-11-23 22:48:14,208 INFO L125 PetriNetUnfolderBase]: For 228670/228670 co-relation queries the response was YES. [2024-11-23 22:48:14,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42610 conditions, 7863 events. 4619/7863 cut-off events. For 228670/228670 co-relation queries the response was YES. Maximal size of possible extension queue 684. Compared 56942 event pairs, 2163 based on Foata normal form. 1/7704 useless extension candidates. Maximal degree in co-relation 42423. Up to 6851 conditions per place. [2024-11-23 22:48:14,268 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 330 selfloop transitions, 35 changer transitions 3/373 dead transitions. [2024-11-23 22:48:14,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 373 transitions, 5029 flow [2024-11-23 22:48:14,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:48:14,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:48:14,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 259 transitions. [2024-11-23 22:48:14,269 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.37976539589442815 [2024-11-23 22:48:14,269 INFO L175 Difference]: Start difference. First operand has 332 places, 315 transitions, 3541 flow. Second operand 11 states and 259 transitions. [2024-11-23 22:48:14,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 373 transitions, 5029 flow [2024-11-23 22:48:15,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 373 transitions, 4905 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-11-23 22:48:15,176 INFO L231 Difference]: Finished difference. Result has 337 places, 320 transitions, 3743 flow [2024-11-23 22:48:15,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3417, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3743, PETRI_PLACES=337, PETRI_TRANSITIONS=320} [2024-11-23 22:48:15,177 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 278 predicate places. [2024-11-23 22:48:15,177 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 320 transitions, 3743 flow [2024-11-23 22:48:15,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:48:15,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:48:15,178 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:15,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-11-23 22:48:15,178 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:48:15,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:15,179 INFO L85 PathProgramCache]: Analyzing trace with hash -504157719, now seen corresponding path program 38 times [2024-11-23 22:48:15,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:15,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021082830] [2024-11-23 22:48:15,179 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:48:15,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:15,206 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:48:15,210 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:48:15,883 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:48:15,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:15,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021082830] [2024-11-23 22:48:15,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021082830] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:15,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:15,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:48:15,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416051412] [2024-11-23 22:48:15,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:15,884 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:48:15,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:15,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:48:15,888 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:48:15,949 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:48:15,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 320 transitions, 3743 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:48:15,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:48:15,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:48:15,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:48:18,271 INFO L124 PetriNetUnfolderBase]: 4619/7866 cut-off events. [2024-11-23 22:48:18,271 INFO L125 PetriNetUnfolderBase]: For 240233/240233 co-relation queries the response was YES. [2024-11-23 22:48:18,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42965 conditions, 7866 events. 4619/7866 cut-off events. For 240233/240233 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 56962 event pairs, 2132 based on Foata normal form. 1/7707 useless extension candidates. Maximal degree in co-relation 42775. Up to 6769 conditions per place. [2024-11-23 22:48:18,339 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 331 selfloop transitions, 40 changer transitions 5/381 dead transitions. [2024-11-23 22:48:18,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 381 transitions, 5039 flow [2024-11-23 22:48:18,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:48:18,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:48:18,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 268 transitions. [2024-11-23 22:48:18,340 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-11-23 22:48:18,340 INFO L175 Difference]: Start difference. First operand has 337 places, 320 transitions, 3743 flow. Second operand 11 states and 268 transitions. [2024-11-23 22:48:18,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 381 transitions, 5039 flow [2024-11-23 22:48:19,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 381 transitions, 4775 flow, removed 114 selfloop flow, removed 6 redundant places. [2024-11-23 22:48:19,151 INFO L231 Difference]: Finished difference. Result has 343 places, 324 transitions, 3652 flow [2024-11-23 22:48:19,151 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3479, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3652, PETRI_PLACES=343, PETRI_TRANSITIONS=324} [2024-11-23 22:48:19,152 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 284 predicate places. [2024-11-23 22:48:19,152 INFO L471 AbstractCegarLoop]: Abstraction has has 343 places, 324 transitions, 3652 flow [2024-11-23 22:48:19,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:48:19,152 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:48:19,152 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:19,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-11-23 22:48:19,152 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:48:19,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:19,154 INFO L85 PathProgramCache]: Analyzing trace with hash -501328497, now seen corresponding path program 39 times [2024-11-23 22:48:19,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:19,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616176686] [2024-11-23 22:48:19,154 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-23 22:48:19,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:19,177 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-23 22:48:19,177 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:48:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:48:19,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:19,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616176686] [2024-11-23 22:48:19,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616176686] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:19,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:19,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:48:19,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759084134] [2024-11-23 22:48:19,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:19,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:48:19,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:19,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:48:19,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:48:19,850 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:48:19,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 324 transitions, 3652 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:48:19,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:48:19,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:48:19,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:48:22,339 INFO L124 PetriNetUnfolderBase]: 4655/7933 cut-off events. [2024-11-23 22:48:22,339 INFO L125 PetriNetUnfolderBase]: For 223946/223946 co-relation queries the response was YES. [2024-11-23 22:48:22,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42352 conditions, 7933 events. 4655/7933 cut-off events. For 223946/223946 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 57609 event pairs, 2220 based on Foata normal form. 1/7775 useless extension candidates. Maximal degree in co-relation 42159. Up to 7020 conditions per place. [2024-11-23 22:48:22,421 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 326 selfloop transitions, 36 changer transitions 3/370 dead transitions. [2024-11-23 22:48:22,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 370 transitions, 4804 flow [2024-11-23 22:48:22,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:48:22,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:48:22,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 249 transitions. [2024-11-23 22:48:22,422 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3651026392961877 [2024-11-23 22:48:22,422 INFO L175 Difference]: Start difference. First operand has 343 places, 324 transitions, 3652 flow. Second operand 11 states and 249 transitions. [2024-11-23 22:48:22,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 370 transitions, 4804 flow [2024-11-23 22:48:23,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 370 transitions, 4639 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-11-23 22:48:23,120 INFO L231 Difference]: Finished difference. Result has 348 places, 327 transitions, 3651 flow [2024-11-23 22:48:23,121 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3651, PETRI_PLACES=348, PETRI_TRANSITIONS=327} [2024-11-23 22:48:23,121 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 289 predicate places. [2024-11-23 22:48:23,121 INFO L471 AbstractCegarLoop]: Abstraction has has 348 places, 327 transitions, 3651 flow [2024-11-23 22:48:23,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:48:23,121 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:48:23,121 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:23,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-11-23 22:48:23,122 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:48:23,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:23,123 INFO L85 PathProgramCache]: Analyzing trace with hash 57275079, now seen corresponding path program 40 times [2024-11-23 22:48:23,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:23,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848795112] [2024-11-23 22:48:23,123 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-23 22:48:23,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:23,147 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-23 22:48:23,147 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:48:23,578 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:48:23,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:23,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848795112] [2024-11-23 22:48:23,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848795112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:23,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:23,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:48:23,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348891440] [2024-11-23 22:48:23,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:23,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:48:23,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:23,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:48:23,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:48:23,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:48:23,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 327 transitions, 3651 flow. Second operand has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 22:48:23,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:48:23,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:48:23,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:48:25,886 INFO L124 PetriNetUnfolderBase]: 4853/8225 cut-off events. [2024-11-23 22:48:25,886 INFO L125 PetriNetUnfolderBase]: For 233982/233982 co-relation queries the response was YES. [2024-11-23 22:48:25,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43683 conditions, 8225 events. 4853/8225 cut-off events. For 233982/233982 co-relation queries the response was YES. Maximal size of possible extension queue 705. Compared 59474 event pairs, 2233 based on Foata normal form. 1/8055 useless extension candidates. Maximal degree in co-relation 43487. Up to 7010 conditions per place. [2024-11-23 22:48:25,959 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 335 selfloop transitions, 45 changer transitions 5/389 dead transitions. [2024-11-23 22:48:25,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 389 transitions, 4899 flow [2024-11-23 22:48:25,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:48:25,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:48:25,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 260 transitions. [2024-11-23 22:48:25,960 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-11-23 22:48:25,960 INFO L175 Difference]: Start difference. First operand has 348 places, 327 transitions, 3651 flow. Second operand 11 states and 260 transitions. [2024-11-23 22:48:25,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 389 transitions, 4899 flow [2024-11-23 22:48:26,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 389 transitions, 4735 flow, removed 48 selfloop flow, removed 8 redundant places. [2024-11-23 22:48:26,787 INFO L231 Difference]: Finished difference. Result has 352 places, 331 transitions, 3683 flow [2024-11-23 22:48:26,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3683, PETRI_PLACES=352, PETRI_TRANSITIONS=331} [2024-11-23 22:48:26,788 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 293 predicate places. [2024-11-23 22:48:26,788 INFO L471 AbstractCegarLoop]: Abstraction has has 352 places, 331 transitions, 3683 flow [2024-11-23 22:48:26,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.818181818181818) internal successors, (163), 11 states have internal predecessors, (163), 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 22:48:26,788 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:48:26,788 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:26,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-11-23 22:48:26,788 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:48:26,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:26,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1353848693, now seen corresponding path program 41 times [2024-11-23 22:48:26,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:26,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591901683] [2024-11-23 22:48:26,789 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-23 22:48:26,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:26,805 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2024-11-23 22:48:26,806 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:48:27,378 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:48:27,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:27,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591901683] [2024-11-23 22:48:27,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591901683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:27,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 22:48:27,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-23 22:48:27,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123351646] [2024-11-23 22:48:27,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:27,378 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 22:48:27,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:27,379 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 22:48:27,379 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-23 22:48:27,414 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 62 [2024-11-23 22:48:27,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 331 transitions, 3683 flow. Second operand has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:48:27,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:48:27,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 62 [2024-11-23 22:48:27,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:48:29,536 INFO L124 PetriNetUnfolderBase]: 4655/7939 cut-off events. [2024-11-23 22:48:29,537 INFO L125 PetriNetUnfolderBase]: For 219399/219399 co-relation queries the response was YES. [2024-11-23 22:48:29,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41998 conditions, 7939 events. 4655/7939 cut-off events. For 219399/219399 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 57794 event pairs, 2227 based on Foata normal form. 1/7776 useless extension candidates. Maximal degree in co-relation 41800. Up to 7032 conditions per place. [2024-11-23 22:48:29,662 INFO L140 encePairwiseOnDemand]: 50/62 looper letters, 332 selfloop transitions, 34 changer transitions 3/374 dead transitions. [2024-11-23 22:48:29,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 374 transitions, 4773 flow [2024-11-23 22:48:29,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 22:48:29,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-23 22:48:29,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 246 transitions. [2024-11-23 22:48:29,664 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-11-23 22:48:29,664 INFO L175 Difference]: Start difference. First operand has 352 places, 331 transitions, 3683 flow. Second operand 11 states and 246 transitions. [2024-11-23 22:48:29,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 374 transitions, 4773 flow [2024-11-23 22:48:30,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 374 transitions, 4588 flow, removed 54 selfloop flow, removed 7 redundant places. [2024-11-23 22:48:30,452 INFO L231 Difference]: Finished difference. Result has 357 places, 333 transitions, 3590 flow [2024-11-23 22:48:30,452 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3498, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3590, PETRI_PLACES=357, PETRI_TRANSITIONS=333} [2024-11-23 22:48:30,452 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 298 predicate places. [2024-11-23 22:48:30,452 INFO L471 AbstractCegarLoop]: Abstraction has has 357 places, 333 transitions, 3590 flow [2024-11-23 22:48:30,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.818181818181818) internal successors, (174), 11 states have internal predecessors, (174), 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 22:48:30,453 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:48:30,453 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:30,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-11-23 22:48:30,453 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:48:30,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:30,454 INFO L85 PathProgramCache]: Analyzing trace with hash -578167986, now seen corresponding path program 1 times [2024-11-23 22:48:30,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:30,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805056587] [2024-11-23 22:48:30,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:30,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:30,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:30,605 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 22:48:30,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:30,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805056587] [2024-11-23 22:48:30,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805056587] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:48:30,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120887547] [2024-11-23 22:48:30,605 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:30,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:48:30,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:48:30,608 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:48:30,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 22:48:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:30,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 22:48:30,741 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:48:30,844 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 22:48:30,844 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:48:30,971 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 22:48:30,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120887547] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:48:30,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:48:30,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2024-11-23 22:48:30,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120623252] [2024-11-23 22:48:30,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:48:30,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-23 22:48:30,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:30,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-23 22:48:30,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-23 22:48:31,026 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-23 22:48:31,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 333 transitions, 3590 flow. Second operand has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 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 22:48:31,026 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:48:31,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-23 22:48:31,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:48:34,887 INFO L124 PetriNetUnfolderBase]: 7879/14101 cut-off events. [2024-11-23 22:48:34,888 INFO L125 PetriNetUnfolderBase]: For 454194/454462 co-relation queries the response was YES. [2024-11-23 22:48:35,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76143 conditions, 14101 events. 7879/14101 cut-off events. For 454194/454462 co-relation queries the response was YES. Maximal size of possible extension queue 1233. Compared 118672 event pairs, 4487 based on Foata normal form. 292/13975 useless extension candidates. Maximal degree in co-relation 75699. Up to 6391 conditions per place. [2024-11-23 22:48:35,088 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 562 selfloop transitions, 12 changer transitions 18/636 dead transitions. [2024-11-23 22:48:35,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 636 transitions, 8289 flow [2024-11-23 22:48:35,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 22:48:35,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-23 22:48:35,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 198 transitions. [2024-11-23 22:48:35,089 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.39919354838709675 [2024-11-23 22:48:35,089 INFO L175 Difference]: Start difference. First operand has 357 places, 333 transitions, 3590 flow. Second operand 8 states and 198 transitions. [2024-11-23 22:48:35,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 636 transitions, 8289 flow [2024-11-23 22:48:36,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 636 transitions, 8139 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-11-23 22:48:36,188 INFO L231 Difference]: Finished difference. Result has 361 places, 339 transitions, 3614 flow [2024-11-23 22:48:36,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3524, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3614, PETRI_PLACES=361, PETRI_TRANSITIONS=339} [2024-11-23 22:48:36,189 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 302 predicate places. [2024-11-23 22:48:36,189 INFO L471 AbstractCegarLoop]: Abstraction has has 361 places, 339 transitions, 3614 flow [2024-11-23 22:48:36,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 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 22:48:36,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:48:36,189 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:36,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 22:48:36,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:48:36,390 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:48:36,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:36,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1963546346, now seen corresponding path program 1 times [2024-11-23 22:48:36,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:36,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835641794] [2024-11-23 22:48:36,391 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:36,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 22:48:36,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:36,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835641794] [2024-11-23 22:48:36,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835641794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:48:36,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474924376] [2024-11-23 22:48:36,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:36,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:48:36,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:48:36,475 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:48:36,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 22:48:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:36,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 22:48:36,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:48:36,647 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:48:36,647 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:48:36,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474924376] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:36,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:48:36,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2024-11-23 22:48:36,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268815062] [2024-11-23 22:48:36,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:36,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:48:36,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:36,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:48:36,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:48:36,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-23 22:48:36,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 339 transitions, 3614 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 22:48:36,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:48:36,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-23 22:48:36,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:48:40,614 INFO L124 PetriNetUnfolderBase]: 8530/15486 cut-off events. [2024-11-23 22:48:40,614 INFO L125 PetriNetUnfolderBase]: For 657773/659395 co-relation queries the response was YES. [2024-11-23 22:48:40,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88905 conditions, 15486 events. 8530/15486 cut-off events. For 657773/659395 co-relation queries the response was YES. Maximal size of possible extension queue 1341. Compared 134974 event pairs, 3184 based on Foata normal form. 898/15951 useless extension candidates. Maximal degree in co-relation 88287. Up to 6900 conditions per place. [2024-11-23 22:48:41,132 INFO L140 encePairwiseOnDemand]: 59/62 looper letters, 448 selfloop transitions, 34 changer transitions 0/526 dead transitions. [2024-11-23 22:48:41,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 526 transitions, 6911 flow [2024-11-23 22:48:41,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:48:41,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:48:41,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 128 transitions. [2024-11-23 22:48:41,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-11-23 22:48:41,133 INFO L175 Difference]: Start difference. First operand has 361 places, 339 transitions, 3614 flow. Second operand 4 states and 128 transitions. [2024-11-23 22:48:41,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 526 transitions, 6911 flow [2024-11-23 22:48:42,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 526 transitions, 6891 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-11-23 22:48:42,767 INFO L231 Difference]: Finished difference. Result has 363 places, 350 transitions, 3977 flow [2024-11-23 22:48:42,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=3542, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3977, PETRI_PLACES=363, PETRI_TRANSITIONS=350} [2024-11-23 22:48:42,768 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 304 predicate places. [2024-11-23 22:48:42,768 INFO L471 AbstractCegarLoop]: Abstraction has has 363 places, 350 transitions, 3977 flow [2024-11-23 22:48:42,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 22:48:42,768 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:48:42,768 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:42,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 22:48:42,968 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:48:42,969 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:48:42,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:42,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1842371131, now seen corresponding path program 1 times [2024-11-23 22:48:42,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:42,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101749195] [2024-11-23 22:48:42,969 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:42,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:43,071 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-23 22:48:43,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:43,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101749195] [2024-11-23 22:48:43,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101749195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:48:43,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140958899] [2024-11-23 22:48:43,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:43,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:48:43,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:48:43,073 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:48:43,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 22:48:43,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:43,187 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 22:48:43,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:48:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-23 22:48:43,237 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 22:48:43,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140958899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 22:48:43,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-23 22:48:43,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2024-11-23 22:48:43,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930730755] [2024-11-23 22:48:43,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 22:48:43,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 22:48:43,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:43,238 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 22:48:43,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-23 22:48:43,238 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-23 22:48:43,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 350 transitions, 3977 flow. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 22:48:43,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:48:43,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-23 22:48:43,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:48:46,996 INFO L124 PetriNetUnfolderBase]: 7002/13223 cut-off events. [2024-11-23 22:48:46,996 INFO L125 PetriNetUnfolderBase]: For 736658/740303 co-relation queries the response was YES. [2024-11-23 22:48:47,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90005 conditions, 13223 events. 7002/13223 cut-off events. For 736658/740303 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 110044 event pairs, 3312 based on Foata normal form. 889/13628 useless extension candidates. Maximal degree in co-relation 89465. Up to 6169 conditions per place. [2024-11-23 22:48:47,117 INFO L140 encePairwiseOnDemand]: 58/62 looper letters, 104 selfloop transitions, 7 changer transitions 140/257 dead transitions. [2024-11-23 22:48:47,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 257 transitions, 3920 flow [2024-11-23 22:48:47,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 22:48:47,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-23 22:48:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 134 transitions. [2024-11-23 22:48:47,117 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5403225806451613 [2024-11-23 22:48:47,118 INFO L175 Difference]: Start difference. First operand has 363 places, 350 transitions, 3977 flow. Second operand 4 states and 134 transitions. [2024-11-23 22:48:47,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 257 transitions, 3920 flow [2024-11-23 22:48:48,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 257 transitions, 3565 flow, removed 66 selfloop flow, removed 34 redundant places. [2024-11-23 22:48:48,547 INFO L231 Difference]: Finished difference. Result has 334 places, 65 transitions, 914 flow [2024-11-23 22:48:48,547 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=2162, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=914, PETRI_PLACES=334, PETRI_TRANSITIONS=65} [2024-11-23 22:48:48,547 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 275 predicate places. [2024-11-23 22:48:48,548 INFO L471 AbstractCegarLoop]: Abstraction has has 334 places, 65 transitions, 914 flow [2024-11-23 22:48:48,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 22:48:48,548 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:48:48,548 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:48,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 22:48:48,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-11-23 22:48:48,748 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:48:48,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:48,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1308198145, now seen corresponding path program 2 times [2024-11-23 22:48:48,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:48,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626347729] [2024-11-23 22:48:48,749 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:48:48,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:48,764 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:48:48,764 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:48:49,162 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-23 22:48:49,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:49,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626347729] [2024-11-23 22:48:49,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626347729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:48:49,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153559721] [2024-11-23 22:48:49,163 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:48:49,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:48:49,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:48:49,165 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:48:49,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 22:48:49,293 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:48:49,293 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:48:49,295 INFO L256 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-23 22:48:49,296 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:48:49,401 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-23 22:48:49,402 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:48:49,462 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 22:48:49,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2024-11-23 22:48:49,492 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 22:48:49,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153559721] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:48:49,493 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:48:49,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 4] total 15 [2024-11-23 22:48:49,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712255283] [2024-11-23 22:48:49,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:48:49,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-23 22:48:49,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:49,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-23 22:48:49,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-23 22:48:49,561 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 62 [2024-11-23 22:48:49,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 65 transitions, 914 flow. Second operand has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 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 22:48:49,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:48:49,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 62 [2024-11-23 22:48:49,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:48:52,338 INFO L124 PetriNetUnfolderBase]: 7436/11531 cut-off events. [2024-11-23 22:48:52,338 INFO L125 PetriNetUnfolderBase]: For 694896/700323 co-relation queries the response was YES. [2024-11-23 22:48:52,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87249 conditions, 11531 events. 7436/11531 cut-off events. For 694896/700323 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 67952 event pairs, 1754 based on Foata normal form. 0/11135 useless extension candidates. Maximal degree in co-relation 87106. Up to 6786 conditions per place. [2024-11-23 22:48:52,532 INFO L140 encePairwiseOnDemand]: 53/62 looper letters, 154 selfloop transitions, 22 changer transitions 0/180 dead transitions. [2024-11-23 22:48:52,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 180 transitions, 2461 flow [2024-11-23 22:48:52,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-23 22:48:52,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-23 22:48:52,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 321 transitions. [2024-11-23 22:48:52,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3235887096774194 [2024-11-23 22:48:52,533 INFO L175 Difference]: Start difference. First operand has 334 places, 65 transitions, 914 flow. Second operand 16 states and 321 transitions. [2024-11-23 22:48:52,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 180 transitions, 2461 flow [2024-11-23 22:48:53,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 180 transitions, 1253 flow, removed 411 selfloop flow, removed 115 redundant places. [2024-11-23 22:48:53,641 INFO L231 Difference]: Finished difference. Result has 111 places, 79 transitions, 490 flow [2024-11-23 22:48:53,641 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=335, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=490, PETRI_PLACES=111, PETRI_TRANSITIONS=79} [2024-11-23 22:48:53,641 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 52 predicate places. [2024-11-23 22:48:53,641 INFO L471 AbstractCegarLoop]: Abstraction has has 111 places, 79 transitions, 490 flow [2024-11-23 22:48:53,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 16.625) internal successors, (266), 16 states have internal predecessors, (266), 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 22:48:53,641 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:48:53,641 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:53,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-23 22:48:53,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2024-11-23 22:48:53,842 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:48:53,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:53,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1843136277, now seen corresponding path program 1 times [2024-11-23 22:48:53,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:53,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458495547] [2024-11-23 22:48:53,843 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:53,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:53,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:53,943 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 22:48:53,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:53,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458495547] [2024-11-23 22:48:53,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458495547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:48:53,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835538012] [2024-11-23 22:48:53,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 22:48:53,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:48:53,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:48:53,945 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:48:53,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 22:48:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 22:48:54,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 22:48:54,064 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:48:54,150 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 22:48:54,151 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:48:54,266 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-23 22:48:54,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835538012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:48:54,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:48:54,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-23 22:48:54,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235138286] [2024-11-23 22:48:54,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:48:54,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-23 22:48:54,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:54,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-23 22:48:54,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-23 22:48:54,292 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 62 [2024-11-23 22:48:54,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 79 transitions, 490 flow. Second operand has 12 states, 12 states have (on average 19.25) internal successors, (231), 12 states have internal predecessors, (231), 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 22:48:54,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:48:54,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 62 [2024-11-23 22:48:54,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-23 22:48:55,857 INFO L124 PetriNetUnfolderBase]: 6960/11717 cut-off events. [2024-11-23 22:48:55,857 INFO L125 PetriNetUnfolderBase]: For 21543/21681 co-relation queries the response was YES. [2024-11-23 22:48:55,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37034 conditions, 11717 events. 6960/11717 cut-off events. For 21543/21681 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 77653 event pairs, 4698 based on Foata normal form. 195/11504 useless extension candidates. Maximal degree in co-relation 36998. Up to 7578 conditions per place. [2024-11-23 22:48:55,943 INFO L140 encePairwiseOnDemand]: 55/62 looper letters, 60 selfloop transitions, 14 changer transitions 65/146 dead transitions. [2024-11-23 22:48:55,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 146 transitions, 1184 flow [2024-11-23 22:48:55,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-23 22:48:55,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-23 22:48:55,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-11-23 22:48:55,944 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-11-23 22:48:55,944 INFO L175 Difference]: Start difference. First operand has 111 places, 79 transitions, 490 flow. Second operand 7 states and 168 transitions. [2024-11-23 22:48:55,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 146 transitions, 1184 flow [2024-11-23 22:48:56,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 146 transitions, 1149 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-11-23 22:48:56,029 INFO L231 Difference]: Finished difference. Result has 115 places, 81 transitions, 529 flow [2024-11-23 22:48:56,029 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=62, PETRI_DIFFERENCE_MINUEND_FLOW=468, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=529, PETRI_PLACES=115, PETRI_TRANSITIONS=81} [2024-11-23 22:48:56,029 INFO L279 CegarLoopForPetriNet]: 59 programPoint places, 56 predicate places. [2024-11-23 22:48:56,029 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 81 transitions, 529 flow [2024-11-23 22:48:56,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 19.25) internal successors, (231), 12 states have internal predecessors, (231), 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 22:48:56,030 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-23 22:48:56,030 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 22:48:56,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 22:48:56,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2024-11-23 22:48:56,230 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 26 more)] === [2024-11-23 22:48:56,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 22:48:56,231 INFO L85 PathProgramCache]: Analyzing trace with hash -768324043, now seen corresponding path program 2 times [2024-11-23 22:48:56,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-23 22:48:56,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389669897] [2024-11-23 22:48:56,231 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:48:56,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-23 22:48:56,264 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:48:56,264 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:48:56,929 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 22:48:56,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-23 22:48:56,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389669897] [2024-11-23 22:48:56,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389669897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 22:48:56,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1539976413] [2024-11-23 22:48:56,929 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 22:48:56,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 22:48:56,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 22:48:56,931 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 22:48:56,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_08ae56b1-2146-4dcc-9d34-cc2fd7a69f12/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 22:48:57,064 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 22:48:57,065 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 22:48:57,066 INFO L256 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-23 22:48:57,068 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 22:48:57,385 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 22:48:57,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 16 [2024-11-23 22:48:57,521 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 22:48:57,521 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 22:48:57,742 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-23 22:48:57,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 11 [2024-11-23 22:48:58,186 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-23 22:48:58,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1539976413] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 22:48:58,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 22:48:58,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2024-11-23 22:48:58,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865601298] [2024-11-23 22:48:58,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 22:48:58,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-23 22:48:58,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-23 22:48:58,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-23 22:48:58,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=729, Unknown=0, NotChecked=0, Total=870 [2024-11-23 22:48:58,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 62 [2024-11-23 22:48:58,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 81 transitions, 529 flow. Second operand has 30 states, 30 states have (on average 13.6) internal successors, (408), 30 states have internal predecessors, (408), 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 22:48:58,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-23 22:48:58,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 62 [2024-11-23 22:48:58,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand