./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i --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_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/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_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/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_2297515c-9824-49e1-b8ed-38f50e619066/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 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:06:16,953 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:06:17,019 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-24 01:06:17,024 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:06:17,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:06:17,049 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:06:17,050 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:06:17,050 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:06:17,050 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:06:17,051 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:06:17,051 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:06:17,051 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:06:17,051 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:06:17,051 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:06:17,051 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:06:17,051 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:06:17,052 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:06:17,052 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:06:17,052 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:06:17,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:06:17,052 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 01:06:17,052 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 01:06:17,052 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 01:06:17,052 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:06:17,053 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:06:17,053 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:06:17,053 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:06:17,053 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:06:17,053 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:06:17,053 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:06:17,053 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:06:17,053 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:06:17,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:06:17,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:06:17,054 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:06:17,054 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:06:17,054 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:06:17,054 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:06:17,054 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:06:17,054 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:06:17,054 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:06:17,055 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:06:17,055 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:06:17,055 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:06:17,055 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:06:17,055 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:06:17,055 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:06:17,055 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_2297515c-9824-49e1-b8ed-38f50e619066/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 -> 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 [2024-11-24 01:06:17,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:06:17,334 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:06:17,336 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:06:17,338 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:06:17,338 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:06:17,339 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i [2024-11-24 01:06:20,151 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/data/d4ca107d3/ec90b8e945df4be3be91a182c8e6d6ce/FLAG8154d2aea [2024-11-24 01:06:20,563 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:06:20,564 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i [2024-11-24 01:06:20,602 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/data/d4ca107d3/ec90b8e945df4be3be91a182c8e6d6ce/FLAG8154d2aea [2024-11-24 01:06:20,622 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/data/d4ca107d3/ec90b8e945df4be3be91a182c8e6d6ce [2024-11-24 01:06:20,625 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:06:20,627 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:06:20,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:06:20,631 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:06:20,636 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:06:20,637 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:06:20" (1/1) ... [2024-11-24 01:06:20,640 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4cb7c05c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:20, skipping insertion in model container [2024-11-24 01:06:20,641 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:06:20" (1/1) ... [2024-11-24 01:06:20,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:06:21,276 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:06:21,296 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:06:21,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:06:21,467 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:06:21,468 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21 WrapperNode [2024-11-24 01:06:21,468 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:06:21,469 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:06:21,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:06:21,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:06:21,477 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21" (1/1) ... [2024-11-24 01:06:21,495 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21" (1/1) ... [2024-11-24 01:06:21,530 INFO L138 Inliner]: procedures = 368, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 89 [2024-11-24 01:06:21,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:06:21,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:06:21,532 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:06:21,532 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:06:21,540 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21" (1/1) ... [2024-11-24 01:06:21,540 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21" (1/1) ... [2024-11-24 01:06:21,544 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21" (1/1) ... [2024-11-24 01:06:21,570 INFO L175 MemorySlicer]: Split 30 memory accesses to 3 slices as follows [5, 5, 20]. 67 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [5, 5, 0]. The 12 writes are split as follows [0, 0, 12]. [2024-11-24 01:06:21,574 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21" (1/1) ... [2024-11-24 01:06:21,574 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21" (1/1) ... [2024-11-24 01:06:21,586 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21" (1/1) ... [2024-11-24 01:06:21,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21" (1/1) ... [2024-11-24 01:06:21,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21" (1/1) ... [2024-11-24 01:06:21,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21" (1/1) ... [2024-11-24 01:06:21,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21" (1/1) ... [2024-11-24 01:06:21,594 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:06:21,595 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:06:21,595 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:06:21,595 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:06:21,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21" (1/1) ... [2024-11-24 01:06:21,602 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:06:21,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:06:21,630 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:06:21,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:06:21,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 01:06:21,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 01:06:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 01:06:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-24 01:06:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 01:06:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 01:06:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 01:06:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 01:06:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 01:06:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 01:06:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-24 01:06:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:06:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:06:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 01:06:21,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 01:06:21,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 01:06:21,654 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-24 01:06:21,654 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-24 01:06:21,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:06:21,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 01:06:21,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 01:06:21,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:06:21,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:06:21,656 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 01:06:21,847 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:06:21,850 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:06:22,347 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 01:06:22,347 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:06:22,575 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:06:22,575 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 01:06:22,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:06:22 BoogieIcfgContainer [2024-11-24 01:06:22,576 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:06:22,577 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:06:22,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:06:22,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:06:22,583 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:06:20" (1/3) ... [2024-11-24 01:06:22,584 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446b4583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:06:22, skipping insertion in model container [2024-11-24 01:06:22,584 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:21" (2/3) ... [2024-11-24 01:06:22,585 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446b4583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:06:22, skipping insertion in model container [2024-11-24 01:06:22,585 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:06:22" (3/3) ... [2024-11-24 01:06:22,586 INFO L128 eAbstractionObserver]: Analyzing ICFG 09-regions_04-list2_nr.i [2024-11-24 01:06:22,605 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:06:22,606 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09-regions_04-list2_nr.i that has 2 procedures, 84 locations, 1 initial locations, 0 loop locations, and 41 error locations. [2024-11-24 01:06:22,607 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 01:06:22,689 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-24 01:06:22,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 83 transitions, 170 flow [2024-11-24 01:06:22,840 INFO L124 PetriNetUnfolderBase]: 0/82 cut-off events. [2024-11-24 01:06:22,844 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:06:22,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 82 events. 0/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 181 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-11-24 01:06:22,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 83 transitions, 170 flow [2024-11-24 01:06:22,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 82 transitions, 167 flow [2024-11-24 01:06:22,864 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:06:22,879 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;@6070db0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:06:22,879 INFO L334 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2024-11-24 01:06:22,883 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 01:06:22,883 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-24 01:06:22,884 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:06:22,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:22,884 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-24 01:06:22,885 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:22,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:22,892 INFO L85 PathProgramCache]: Analyzing trace with hash 11284, now seen corresponding path program 1 times [2024-11-24 01:06:22,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:22,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326564298] [2024-11-24 01:06:22,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:22,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:23,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:23,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326564298] [2024-11-24 01:06:23,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326564298] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:23,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:23,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-24 01:06:23,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158014779] [2024-11-24 01:06:23,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:23,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:06:23,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:23,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:06:23,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:06:23,394 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 83 [2024-11-24 01:06:23,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:23,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:23,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 83 [2024-11-24 01:06:23,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:23,675 INFO L124 PetriNetUnfolderBase]: 99/370 cut-off events. [2024-11-24 01:06:23,677 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:06:23,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 370 events. 99/370 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1819 event pairs, 99 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 564. Up to 223 conditions per place. [2024-11-24 01:06:23,685 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 28 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-11-24 01:06:23,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 215 flow [2024-11-24 01:06:23,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:06:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:06:23,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-11-24 01:06:23,704 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.678714859437751 [2024-11-24 01:06:23,706 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 167 flow. Second operand 3 states and 169 transitions. [2024-11-24 01:06:23,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 215 flow [2024-11-24 01:06:23,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:06:23,714 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 158 flow [2024-11-24 01:06:23,719 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-11-24 01:06:23,724 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -7 predicate places. [2024-11-24 01:06:23,725 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 158 flow [2024-11-24 01:06:23,725 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:23,725 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:23,725 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-24 01:06:23,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:06:23,726 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:23,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:23,726 INFO L85 PathProgramCache]: Analyzing trace with hash 11285, now seen corresponding path program 1 times [2024-11-24 01:06:23,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:23,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243770066] [2024-11-24 01:06:23,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:23,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:24,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:24,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:24,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243770066] [2024-11-24 01:06:24,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243770066] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:24,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:24,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-24 01:06:24,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882031436] [2024-11-24 01:06:24,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:24,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:06:24,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:24,009 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:06:24,009 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:06:24,125 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 83 [2024-11-24 01:06:24,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:24,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:24,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 83 [2024-11-24 01:06:24,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:24,319 INFO L124 PetriNetUnfolderBase]: 99/362 cut-off events. [2024-11-24 01:06:24,319 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-24 01:06:24,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 362 events. 99/362 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1810 event pairs, 99 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 572. Up to 223 conditions per place. [2024-11-24 01:06:24,326 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 24 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-24 01:06:24,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 198 flow [2024-11-24 01:06:24,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:06:24,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:06:24,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-11-24 01:06:24,328 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7108433734939759 [2024-11-24 01:06:24,328 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 158 flow. Second operand 3 states and 177 transitions. [2024-11-24 01:06:24,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 198 flow [2024-11-24 01:06:24,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 01:06:24,330 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 142 flow [2024-11-24 01:06:24,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-11-24 01:06:24,331 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2024-11-24 01:06:24,331 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 142 flow [2024-11-24 01:06:24,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:24,332 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:24,332 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-24 01:06:24,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:06:24,332 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:24,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:24,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1840858293, now seen corresponding path program 1 times [2024-11-24 01:06:24,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:24,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004959253] [2024-11-24 01:06:24,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:24,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:24,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:24,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:24,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004959253] [2024-11-24 01:06:24,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004959253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:24,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:24,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:06:24,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596521526] [2024-11-24 01:06:24,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:24,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:06:24,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:24,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:06:24,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:06:24,655 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 83 [2024-11-24 01:06:24,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:24,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:24,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 83 [2024-11-24 01:06:24,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:24,873 INFO L124 PetriNetUnfolderBase]: 110/392 cut-off events. [2024-11-24 01:06:24,874 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:06:24,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 392 events. 110/392 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1982 event pairs, 110 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 626. Up to 249 conditions per place. [2024-11-24 01:06:24,878 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 31 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-24 01:06:24,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 63 transitions, 202 flow [2024-11-24 01:06:24,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:06:24,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:06:24,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 192 transitions. [2024-11-24 01:06:24,883 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5783132530120482 [2024-11-24 01:06:24,883 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 142 flow. Second operand 4 states and 192 transitions. [2024-11-24 01:06:24,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 63 transitions, 202 flow [2024-11-24 01:06:24,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 63 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 01:06:24,887 INFO L231 Difference]: Finished difference. Result has 69 places, 63 transitions, 132 flow [2024-11-24 01:06:24,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=69, PETRI_TRANSITIONS=63} [2024-11-24 01:06:24,889 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -17 predicate places. [2024-11-24 01:06:24,889 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 63 transitions, 132 flow [2024-11-24 01:06:24,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:24,889 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:24,889 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-24 01:06:24,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:06:24,890 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:24,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:24,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1840858294, now seen corresponding path program 1 times [2024-11-24 01:06:24,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:24,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984798165] [2024-11-24 01:06:24,891 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:24,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:25,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:25,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984798165] [2024-11-24 01:06:25,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984798165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:25,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:25,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:06:25,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948423901] [2024-11-24 01:06:25,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:25,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:06:25,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:25,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:06:25,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:06:25,391 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 83 [2024-11-24 01:06:25,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 63 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:25,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:25,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 83 [2024-11-24 01:06:25,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:25,566 INFO L124 PetriNetUnfolderBase]: 110/387 cut-off events. [2024-11-24 01:06:25,566 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-24 01:06:25,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 643 conditions, 387 events. 110/387 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1977 event pairs, 110 based on Foata normal form. 0/332 useless extension candidates. Maximal degree in co-relation 630. Up to 247 conditions per place. [2024-11-24 01:06:25,569 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 27 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2024-11-24 01:06:25,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 60 transitions, 184 flow [2024-11-24 01:06:25,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:06:25,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:06:25,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 236 transitions. [2024-11-24 01:06:25,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7108433734939759 [2024-11-24 01:06:25,571 INFO L175 Difference]: Start difference. First operand has 69 places, 63 transitions, 132 flow. Second operand 4 states and 236 transitions. [2024-11-24 01:06:25,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 60 transitions, 184 flow [2024-11-24 01:06:25,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 181 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 01:06:25,573 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 127 flow [2024-11-24 01:06:25,574 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=127, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2024-11-24 01:06:25,574 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -19 predicate places. [2024-11-24 01:06:25,575 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 127 flow [2024-11-24 01:06:25,575 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.0) internal successors, (208), 4 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:25,575 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:25,575 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:06:25,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:06:25,576 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:25,576 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:25,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1865543333, now seen corresponding path program 1 times [2024-11-24 01:06:25,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:25,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020981808] [2024-11-24 01:06:25,577 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:25,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:25,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:25,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:25,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:25,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020981808] [2024-11-24 01:06:25,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020981808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:25,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:25,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:06:25,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252509243] [2024-11-24 01:06:25,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:25,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:06:25,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:25,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:06:25,860 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:06:25,964 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 83 [2024-11-24 01:06:25,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 127 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:25,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:25,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 83 [2024-11-24 01:06:25,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:26,079 INFO L124 PetriNetUnfolderBase]: 110/357 cut-off events. [2024-11-24 01:06:26,079 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:06:26,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 357 events. 110/357 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1692 event pairs, 110 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 602. Up to 248 conditions per place. [2024-11-24 01:06:26,082 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 32 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2024-11-24 01:06:26,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 57 transitions, 187 flow [2024-11-24 01:06:26,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:06:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:06:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-11-24 01:06:26,083 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7108433734939759 [2024-11-24 01:06:26,083 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 127 flow. Second operand 3 states and 177 transitions. [2024-11-24 01:06:26,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 57 transitions, 187 flow [2024-11-24 01:06:26,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 01:06:26,085 INFO L231 Difference]: Finished difference. Result has 64 places, 57 transitions, 120 flow [2024-11-24 01:06:26,086 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=64, PETRI_TRANSITIONS=57} [2024-11-24 01:06:26,086 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -22 predicate places. [2024-11-24 01:06:26,086 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 57 transitions, 120 flow [2024-11-24 01:06:26,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:26,087 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:26,087 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:06:26,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:06:26,087 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:26,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:26,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1865543332, now seen corresponding path program 1 times [2024-11-24 01:06:26,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:26,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096447651] [2024-11-24 01:06:26,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:26,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:26,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:26,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096447651] [2024-11-24 01:06:26,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096447651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:26,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:26,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:06:26,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803047023] [2024-11-24 01:06:26,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:26,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:06:26,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:26,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:06:26,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:06:26,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 83 [2024-11-24 01:06:26,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 57 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:26,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:26,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 83 [2024-11-24 01:06:26,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:26,795 INFO L124 PetriNetUnfolderBase]: 110/344 cut-off events. [2024-11-24 01:06:26,795 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:06:26,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 344 events. 110/344 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1577 event pairs, 110 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 590. Up to 246 conditions per place. [2024-11-24 01:06:26,798 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 31 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-11-24 01:06:26,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 180 flow [2024-11-24 01:06:26,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:06:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:06:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 180 transitions. [2024-11-24 01:06:26,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5421686746987951 [2024-11-24 01:06:26,799 INFO L175 Difference]: Start difference. First operand has 64 places, 57 transitions, 120 flow. Second operand 4 states and 180 transitions. [2024-11-24 01:06:26,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 180 flow [2024-11-24 01:06:26,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 54 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:06:26,801 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 117 flow [2024-11-24 01:06:26,801 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2024-11-24 01:06:26,802 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -23 predicate places. [2024-11-24 01:06:26,802 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 117 flow [2024-11-24 01:06:26,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.2) internal successors, (191), 5 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:26,802 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:26,802 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:06:26,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:06:26,803 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:26,803 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:26,803 INFO L85 PathProgramCache]: Analyzing trace with hash -2094825083, now seen corresponding path program 1 times [2024-11-24 01:06:26,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:26,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764467144] [2024-11-24 01:06:26,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:26,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:26,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:27,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:27,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:27,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764467144] [2024-11-24 01:06:27,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764467144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:27,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:27,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:06:27,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987902634] [2024-11-24 01:06:27,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:27,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:06:27,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:27,927 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:06:27,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:06:29,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-24 01:06:29,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 117 flow. Second operand has 13 states, 13 states have (on average 35.15384615384615) internal successors, (457), 13 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:29,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:29,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-24 01:06:29,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:29,662 INFO L124 PetriNetUnfolderBase]: 167/488 cut-off events. [2024-11-24 01:06:29,662 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:06:29,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 488 events. 167/488 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2508 event pairs, 6 based on Foata normal form. 0/453 useless extension candidates. Maximal degree in co-relation 857. Up to 180 conditions per place. [2024-11-24 01:06:29,666 INFO L140 encePairwiseOnDemand]: 70/83 looper letters, 61 selfloop transitions, 14 changer transitions 0/91 dead transitions. [2024-11-24 01:06:29,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 91 transitions, 341 flow [2024-11-24 01:06:29,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:06:29,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-24 01:06:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 456 transitions. [2024-11-24 01:06:29,670 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4994523548740416 [2024-11-24 01:06:29,670 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 117 flow. Second operand 11 states and 456 transitions. [2024-11-24 01:06:29,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 91 transitions, 341 flow [2024-11-24 01:06:29,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 91 transitions, 338 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 01:06:29,676 INFO L231 Difference]: Finished difference. Result has 72 places, 58 transitions, 171 flow [2024-11-24 01:06:29,676 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=171, PETRI_PLACES=72, PETRI_TRANSITIONS=58} [2024-11-24 01:06:29,677 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -14 predicate places. [2024-11-24 01:06:29,677 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 58 transitions, 171 flow [2024-11-24 01:06:29,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.15384615384615) internal successors, (457), 13 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:29,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:29,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:06:29,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:06:29,678 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:29,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:29,678 INFO L85 PathProgramCache]: Analyzing trace with hash -2094825082, now seen corresponding path program 1 times [2024-11-24 01:06:29,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:29,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736251518] [2024-11-24 01:06:29,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:29,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:29,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:30,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:30,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:30,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736251518] [2024-11-24 01:06:30,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736251518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:30,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:30,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:06:30,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398067116] [2024-11-24 01:06:30,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:30,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:06:30,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:30,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:06:30,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:06:31,602 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 83 [2024-11-24 01:06:31,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 58 transitions, 171 flow. Second operand has 9 states, 9 states have (on average 42.666666666666664) internal successors, (384), 9 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:31,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:31,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 83 [2024-11-24 01:06:31,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:32,107 INFO L124 PetriNetUnfolderBase]: 176/487 cut-off events. [2024-11-24 01:06:32,108 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2024-11-24 01:06:32,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1014 conditions, 487 events. 176/487 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2507 event pairs, 2 based on Foata normal form. 15/445 useless extension candidates. Maximal degree in co-relation 993. Up to 247 conditions per place. [2024-11-24 01:06:32,114 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 65 selfloop transitions, 13 changer transitions 0/91 dead transitions. [2024-11-24 01:06:32,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 91 transitions, 403 flow [2024-11-24 01:06:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:06:32,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-24 01:06:32,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 448 transitions. [2024-11-24 01:06:32,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5997322623828648 [2024-11-24 01:06:32,116 INFO L175 Difference]: Start difference. First operand has 72 places, 58 transitions, 171 flow. Second operand 9 states and 448 transitions. [2024-11-24 01:06:32,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 91 transitions, 403 flow [2024-11-24 01:06:32,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 91 transitions, 395 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-24 01:06:32,122 INFO L231 Difference]: Finished difference. Result has 74 places, 59 transitions, 201 flow [2024-11-24 01:06:32,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=201, PETRI_PLACES=74, PETRI_TRANSITIONS=59} [2024-11-24 01:06:32,125 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -12 predicate places. [2024-11-24 01:06:32,125 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 59 transitions, 201 flow [2024-11-24 01:06:32,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 42.666666666666664) internal successors, (384), 9 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:32,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:32,125 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:06:32,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:06:32,126 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:32,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:32,126 INFO L85 PathProgramCache]: Analyzing trace with hash -2128602727, now seen corresponding path program 1 times [2024-11-24 01:06:32,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:32,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798028616] [2024-11-24 01:06:32,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:32,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:33,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:33,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:33,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798028616] [2024-11-24 01:06:33,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798028616] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:33,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:33,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:06:33,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047855176] [2024-11-24 01:06:33,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:33,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:06:33,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:33,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:06:33,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:06:33,655 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 83 [2024-11-24 01:06:33,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 59 transitions, 201 flow. Second operand has 9 states, 9 states have (on average 44.77777777777778) internal successors, (403), 9 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:33,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:33,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 83 [2024-11-24 01:06:33,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:34,030 INFO L124 PetriNetUnfolderBase]: 166/466 cut-off events. [2024-11-24 01:06:34,030 INFO L125 PetriNetUnfolderBase]: For 160/160 co-relation queries the response was YES. [2024-11-24 01:06:34,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 466 events. 166/466 cut-off events. For 160/160 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2378 event pairs, 42 based on Foata normal form. 0/417 useless extension candidates. Maximal degree in co-relation 986. Up to 184 conditions per place. [2024-11-24 01:06:34,036 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 70 selfloop transitions, 16 changer transitions 0/99 dead transitions. [2024-11-24 01:06:34,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 99 transitions, 465 flow [2024-11-24 01:06:34,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:06:34,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-24 01:06:34,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 516 transitions. [2024-11-24 01:06:34,041 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6216867469879518 [2024-11-24 01:06:34,042 INFO L175 Difference]: Start difference. First operand has 74 places, 59 transitions, 201 flow. Second operand 10 states and 516 transitions. [2024-11-24 01:06:34,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 99 transitions, 465 flow [2024-11-24 01:06:34,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 99 transitions, 452 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-24 01:06:34,045 INFO L231 Difference]: Finished difference. Result has 82 places, 62 transitions, 244 flow [2024-11-24 01:06:34,046 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=244, PETRI_PLACES=82, PETRI_TRANSITIONS=62} [2024-11-24 01:06:34,047 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2024-11-24 01:06:34,047 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 62 transitions, 244 flow [2024-11-24 01:06:34,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 44.77777777777778) internal successors, (403), 9 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:34,047 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:34,047 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] [2024-11-24 01:06:34,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:06:34,048 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:34,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:34,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1460892621, now seen corresponding path program 1 times [2024-11-24 01:06:34,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:34,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739892179] [2024-11-24 01:06:34,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:34,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:34,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:34,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739892179] [2024-11-24 01:06:34,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739892179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:34,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:34,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:06:34,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903872646] [2024-11-24 01:06:34,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:34,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:06:34,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:34,180 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:06:34,180 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:06:34,181 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 83 [2024-11-24 01:06:34,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 62 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:34,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:34,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 83 [2024-11-24 01:06:34,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:34,329 INFO L124 PetriNetUnfolderBase]: 105/347 cut-off events. [2024-11-24 01:06:34,329 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2024-11-24 01:06:34,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 347 events. 105/347 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1757 event pairs, 43 based on Foata normal form. 6/335 useless extension candidates. Maximal degree in co-relation 750. Up to 174 conditions per place. [2024-11-24 01:06:34,332 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 48 selfloop transitions, 6 changer transitions 0/78 dead transitions. [2024-11-24 01:06:34,333 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 78 transitions, 390 flow [2024-11-24 01:06:34,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:06:34,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:06:34,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-11-24 01:06:34,334 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8554216867469879 [2024-11-24 01:06:34,334 INFO L175 Difference]: Start difference. First operand has 82 places, 62 transitions, 244 flow. Second operand 3 states and 213 transitions. [2024-11-24 01:06:34,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 78 transitions, 390 flow [2024-11-24 01:06:34,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 78 transitions, 356 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-11-24 01:06:34,338 INFO L231 Difference]: Finished difference. Result has 77 places, 63 transitions, 226 flow [2024-11-24 01:06:34,338 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=77, PETRI_TRANSITIONS=63} [2024-11-24 01:06:34,338 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -9 predicate places. [2024-11-24 01:06:34,338 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 63 transitions, 226 flow [2024-11-24 01:06:34,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:34,341 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:34,341 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] [2024-11-24 01:06:34,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:06:34,341 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:34,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:34,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1711614886, now seen corresponding path program 1 times [2024-11-24 01:06:34,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:34,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050649236] [2024-11-24 01:06:34,342 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:34,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:34,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:34,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:34,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050649236] [2024-11-24 01:06:34,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050649236] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:34,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:34,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:06:34,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800638671] [2024-11-24 01:06:34,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:34,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:06:34,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:34,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:06:34,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:06:34,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 83 [2024-11-24 01:06:34,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 63 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:34,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:34,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 83 [2024-11-24 01:06:34,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:34,939 INFO L124 PetriNetUnfolderBase]: 140/446 cut-off events. [2024-11-24 01:06:34,939 INFO L125 PetriNetUnfolderBase]: For 152/152 co-relation queries the response was YES. [2024-11-24 01:06:34,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 446 events. 140/446 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2392 event pairs, 14 based on Foata normal form. 0/419 useless extension candidates. Maximal degree in co-relation 987. Up to 183 conditions per place. [2024-11-24 01:06:34,942 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 58 selfloop transitions, 12 changer transitions 0/88 dead transitions. [2024-11-24 01:06:34,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 88 transitions, 449 flow [2024-11-24 01:06:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:06:34,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 01:06:34,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 305 transitions. [2024-11-24 01:06:34,948 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7349397590361446 [2024-11-24 01:06:34,948 INFO L175 Difference]: Start difference. First operand has 77 places, 63 transitions, 226 flow. Second operand 5 states and 305 transitions. [2024-11-24 01:06:34,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 88 transitions, 449 flow [2024-11-24 01:06:34,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 88 transitions, 436 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:06:34,951 INFO L231 Difference]: Finished difference. Result has 82 places, 66 transitions, 273 flow [2024-11-24 01:06:34,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=273, PETRI_PLACES=82, PETRI_TRANSITIONS=66} [2024-11-24 01:06:34,952 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -4 predicate places. [2024-11-24 01:06:34,952 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 66 transitions, 273 flow [2024-11-24 01:06:34,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:34,953 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:34,953 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] [2024-11-24 01:06:34,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:06:34,953 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:34,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:34,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1711614887, now seen corresponding path program 1 times [2024-11-24 01:06:34,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:34,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762637877] [2024-11-24 01:06:34,954 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:34,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:35,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:35,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:35,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762637877] [2024-11-24 01:06:35,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762637877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:35,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:35,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:06:35,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135767993] [2024-11-24 01:06:35,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:35,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:06:35,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:35,129 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:06:35,129 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:06:35,297 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 83 [2024-11-24 01:06:35,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 66 transitions, 273 flow. Second operand has 6 states, 6 states have (on average 44.333333333333336) internal successors, (266), 6 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) [2024-11-24 01:06:35,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:35,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 83 [2024-11-24 01:06:35,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:35,521 INFO L124 PetriNetUnfolderBase]: 140/436 cut-off events. [2024-11-24 01:06:35,522 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2024-11-24 01:06:35,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 436 events. 140/436 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2274 event pairs, 58 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 1048. Up to 191 conditions per place. [2024-11-24 01:06:35,525 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 48 selfloop transitions, 19 changer transitions 0/85 dead transitions. [2024-11-24 01:06:35,525 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 85 transitions, 463 flow [2024-11-24 01:06:35,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:06:35,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 01:06:35,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2024-11-24 01:06:35,527 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.608433734939759 [2024-11-24 01:06:35,528 INFO L175 Difference]: Start difference. First operand has 82 places, 66 transitions, 273 flow. Second operand 6 states and 303 transitions. [2024-11-24 01:06:35,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 85 transitions, 463 flow [2024-11-24 01:06:35,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 85 transitions, 463 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-24 01:06:35,533 INFO L231 Difference]: Finished difference. Result has 90 places, 67 transitions, 349 flow [2024-11-24 01:06:35,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=349, PETRI_PLACES=90, PETRI_TRANSITIONS=67} [2024-11-24 01:06:35,534 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 4 predicate places. [2024-11-24 01:06:35,535 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 67 transitions, 349 flow [2024-11-24 01:06:35,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.333333333333336) internal successors, (266), 6 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) [2024-11-24 01:06:35,536 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:35,536 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] [2024-11-24 01:06:35,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:06:35,536 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:35,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:35,537 INFO L85 PathProgramCache]: Analyzing trace with hash -38564856, now seen corresponding path program 1 times [2024-11-24 01:06:35,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:35,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086235970] [2024-11-24 01:06:35,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:35,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:35,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:36,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:36,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086235970] [2024-11-24 01:06:36,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086235970] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:36,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:36,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-24 01:06:36,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124968060] [2024-11-24 01:06:36,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:36,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-24 01:06:36,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:36,255 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-24 01:06:36,255 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-24 01:06:37,381 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 83 [2024-11-24 01:06:37,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 67 transitions, 349 flow. Second operand has 14 states, 14 states have (on average 34.5) internal successors, (483), 14 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:37,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:37,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 83 [2024-11-24 01:06:37,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:38,427 INFO L124 PetriNetUnfolderBase]: 167/474 cut-off events. [2024-11-24 01:06:38,427 INFO L125 PetriNetUnfolderBase]: For 638/638 co-relation queries the response was YES. [2024-11-24 01:06:38,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 474 events. 167/474 cut-off events. For 638/638 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2446 event pairs, 12 based on Foata normal form. 6/468 useless extension candidates. Maximal degree in co-relation 1365. Up to 76 conditions per place. [2024-11-24 01:06:38,432 INFO L140 encePairwiseOnDemand]: 67/83 looper letters, 73 selfloop transitions, 49 changer transitions 2/137 dead transitions. [2024-11-24 01:06:38,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 137 transitions, 893 flow [2024-11-24 01:06:38,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-24 01:06:38,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-11-24 01:06:38,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 834 transitions. [2024-11-24 01:06:38,436 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45673603504928806 [2024-11-24 01:06:38,436 INFO L175 Difference]: Start difference. First operand has 90 places, 67 transitions, 349 flow. Second operand 22 states and 834 transitions. [2024-11-24 01:06:38,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 137 transitions, 893 flow [2024-11-24 01:06:38,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 137 transitions, 856 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-11-24 01:06:38,443 INFO L231 Difference]: Finished difference. Result has 109 places, 88 transitions, 550 flow [2024-11-24 01:06:38,443 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=550, PETRI_PLACES=109, PETRI_TRANSITIONS=88} [2024-11-24 01:06:38,444 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 23 predicate places. [2024-11-24 01:06:38,445 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 88 transitions, 550 flow [2024-11-24 01:06:38,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 34.5) internal successors, (483), 14 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:38,445 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:38,445 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] [2024-11-24 01:06:38,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:06:38,446 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:38,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:38,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2004021681, now seen corresponding path program 1 times [2024-11-24 01:06:38,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:38,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144816813] [2024-11-24 01:06:38,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:38,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:39,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:39,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:39,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144816813] [2024-11-24 01:06:39,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144816813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:39,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:39,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:06:39,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071875478] [2024-11-24 01:06:39,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:39,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:06:39,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:39,048 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:06:39,048 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:06:39,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 83 [2024-11-24 01:06:39,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 88 transitions, 550 flow. Second operand has 13 states, 13 states have (on average 36.61538461538461) internal successors, (476), 13 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:39,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:39,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 83 [2024-11-24 01:06:39,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:40,441 INFO L124 PetriNetUnfolderBase]: 147/453 cut-off events. [2024-11-24 01:06:40,441 INFO L125 PetriNetUnfolderBase]: For 754/754 co-relation queries the response was YES. [2024-11-24 01:06:40,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1416 conditions, 453 events. 147/453 cut-off events. For 754/754 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2412 event pairs, 27 based on Foata normal form. 6/443 useless extension candidates. Maximal degree in co-relation 1380. Up to 72 conditions per place. [2024-11-24 01:06:40,445 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 62 selfloop transitions, 40 changer transitions 0/117 dead transitions. [2024-11-24 01:06:40,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 117 transitions, 846 flow [2024-11-24 01:06:40,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:06:40,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 01:06:40,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 499 transitions. [2024-11-24 01:06:40,448 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.501004016064257 [2024-11-24 01:06:40,448 INFO L175 Difference]: Start difference. First operand has 109 places, 88 transitions, 550 flow. Second operand 12 states and 499 transitions. [2024-11-24 01:06:40,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 117 transitions, 846 flow [2024-11-24 01:06:40,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 117 transitions, 797 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-11-24 01:06:40,455 INFO L231 Difference]: Finished difference. Result has 112 places, 88 transitions, 602 flow [2024-11-24 01:06:40,456 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=501, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=602, PETRI_PLACES=112, PETRI_TRANSITIONS=88} [2024-11-24 01:06:40,456 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 26 predicate places. [2024-11-24 01:06:40,456 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 88 transitions, 602 flow [2024-11-24 01:06:40,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 36.61538461538461) internal successors, (476), 13 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:40,457 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:40,457 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] [2024-11-24 01:06:40,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:06:40,457 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:40,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:40,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1245081057, now seen corresponding path program 1 times [2024-11-24 01:06:40,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:40,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087073946] [2024-11-24 01:06:40,458 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:40,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:40,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:41,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:41,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:41,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087073946] [2024-11-24 01:06:41,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087073946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:41,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:41,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:06:41,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147297374] [2024-11-24 01:06:41,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:41,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:06:41,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:41,209 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:06:41,209 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:06:42,369 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 83 [2024-11-24 01:06:42,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 88 transitions, 602 flow. Second operand has 13 states, 13 states have (on average 35.53846153846154) internal successors, (462), 13 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:42,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:42,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 83 [2024-11-24 01:06:42,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:43,084 INFO L124 PetriNetUnfolderBase]: 185/545 cut-off events. [2024-11-24 01:06:43,085 INFO L125 PetriNetUnfolderBase]: For 1222/1222 co-relation queries the response was YES. [2024-11-24 01:06:43,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1808 conditions, 545 events. 185/545 cut-off events. For 1222/1222 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3026 event pairs, 17 based on Foata normal form. 31/574 useless extension candidates. Maximal degree in co-relation 1767. Up to 97 conditions per place. [2024-11-24 01:06:43,090 INFO L140 encePairwiseOnDemand]: 66/83 looper letters, 98 selfloop transitions, 38 changer transitions 0/148 dead transitions. [2024-11-24 01:06:43,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 148 transitions, 1183 flow [2024-11-24 01:06:43,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:06:43,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-24 01:06:43,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 658 transitions. [2024-11-24 01:06:43,095 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4954819277108434 [2024-11-24 01:06:43,095 INFO L175 Difference]: Start difference. First operand has 112 places, 88 transitions, 602 flow. Second operand 16 states and 658 transitions. [2024-11-24 01:06:43,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 148 transitions, 1183 flow [2024-11-24 01:06:43,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 148 transitions, 1067 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-11-24 01:06:43,107 INFO L231 Difference]: Finished difference. Result has 116 places, 95 transitions, 687 flow [2024-11-24 01:06:43,108 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=687, PETRI_PLACES=116, PETRI_TRANSITIONS=95} [2024-11-24 01:06:43,108 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 30 predicate places. [2024-11-24 01:06:43,109 INFO L471 AbstractCegarLoop]: Abstraction has has 116 places, 95 transitions, 687 flow [2024-11-24 01:06:43,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 35.53846153846154) internal successors, (462), 13 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:43,109 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:43,109 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] [2024-11-24 01:06:43,110 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:06:43,110 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:43,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:43,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1245081056, now seen corresponding path program 1 times [2024-11-24 01:06:43,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:43,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006180442] [2024-11-24 01:06:43,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:43,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:43,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:43,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 01:06:43,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:06:43,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006180442] [2024-11-24 01:06:43,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006180442] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:43,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:43,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:06:43,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689073805] [2024-11-24 01:06:43,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:43,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:06:43,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:06:43,937 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:06:43,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:06:45,205 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-24 01:06:45,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 95 transitions, 687 flow. Second operand has 13 states, 13 states have (on average 33.53846153846154) internal successors, (436), 13 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:45,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:45,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-24 01:06:45,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:45,934 INFO L124 PetriNetUnfolderBase]: 201/525 cut-off events. [2024-11-24 01:06:45,934 INFO L125 PetriNetUnfolderBase]: For 1370/1370 co-relation queries the response was YES. [2024-11-24 01:06:45,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1901 conditions, 525 events. 201/525 cut-off events. For 1370/1370 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2677 event pairs, 20 based on Foata normal form. 25/548 useless extension candidates. Maximal degree in co-relation 1859. Up to 168 conditions per place. [2024-11-24 01:06:45,939 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 87 selfloop transitions, 30 changer transitions 11/136 dead transitions. [2024-11-24 01:06:45,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 136 transitions, 1143 flow [2024-11-24 01:06:45,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-24 01:06:45,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-11-24 01:06:45,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 608 transitions. [2024-11-24 01:06:45,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4578313253012048 [2024-11-24 01:06:45,941 INFO L175 Difference]: Start difference. First operand has 116 places, 95 transitions, 687 flow. Second operand 16 states and 608 transitions. [2024-11-24 01:06:45,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 136 transitions, 1143 flow [2024-11-24 01:06:45,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 136 transitions, 1114 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-24 01:06:45,951 INFO L231 Difference]: Finished difference. Result has 121 places, 85 transitions, 619 flow [2024-11-24 01:06:45,952 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=619, PETRI_PLACES=121, PETRI_TRANSITIONS=85} [2024-11-24 01:06:45,953 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 35 predicate places. [2024-11-24 01:06:45,954 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 85 transitions, 619 flow [2024-11-24 01:06:45,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 33.53846153846154) internal successors, (436), 13 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:45,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:45,954 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] [2024-11-24 01:06:45,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-24 01:06:45,954 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:45,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:45,958 INFO L85 PathProgramCache]: Analyzing trace with hash -866987548, now seen corresponding path program 1 times [2024-11-24 01:06:45,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:06:45,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570607566] [2024-11-24 01:06:45,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:45,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:06:46,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:06:46,006 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:06:46,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:06:46,066 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-24 01:06:46,067 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 01:06:46,067 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (53 of 54 remaining) [2024-11-24 01:06:46,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 54 remaining) [2024-11-24 01:06:46,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 54 remaining) [2024-11-24 01:06:46,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 54 remaining) [2024-11-24 01:06:46,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 54 remaining) [2024-11-24 01:06:46,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 54 remaining) [2024-11-24 01:06:46,069 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 54 remaining) [2024-11-24 01:06:46,070 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 54 remaining) [2024-11-24 01:06:46,072 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 54 remaining) [2024-11-24 01:06:46,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 54 remaining) [2024-11-24 01:06:46,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 54 remaining) [2024-11-24 01:06:46,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 54 remaining) [2024-11-24 01:06:46,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 54 remaining) [2024-11-24 01:06:46,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 54 remaining) [2024-11-24 01:06:46,073 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 54 remaining) [2024-11-24 01:06:46,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 54 remaining) [2024-11-24 01:06:46,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 54 remaining) [2024-11-24 01:06:46,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 54 remaining) [2024-11-24 01:06:46,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 54 remaining) [2024-11-24 01:06:46,074 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 54 remaining) [2024-11-24 01:06:46,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 54 remaining) [2024-11-24 01:06:46,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 54 remaining) [2024-11-24 01:06:46,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 54 remaining) [2024-11-24 01:06:46,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 54 remaining) [2024-11-24 01:06:46,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 54 remaining) [2024-11-24 01:06:46,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 54 remaining) [2024-11-24 01:06:46,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 54 remaining) [2024-11-24 01:06:46,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 54 remaining) [2024-11-24 01:06:46,075 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 54 remaining) [2024-11-24 01:06:46,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 54 remaining) [2024-11-24 01:06:46,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 54 remaining) [2024-11-24 01:06:46,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 54 remaining) [2024-11-24 01:06:46,076 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 54 remaining) [2024-11-24 01:06:46,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 54 remaining) [2024-11-24 01:06:46,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 54 remaining) [2024-11-24 01:06:46,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 54 remaining) [2024-11-24 01:06:46,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 54 remaining) [2024-11-24 01:06:46,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 54 remaining) [2024-11-24 01:06:46,077 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 54 remaining) [2024-11-24 01:06:46,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:06:46,079 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:06:46,132 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-24 01:06:46,132 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 01:06:46,141 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:06:46 BasicIcfg [2024-11-24 01:06:46,141 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 01:06:46,141 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:06:46,142 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:06:46,142 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:06:46,142 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:06:22" (3/4) ... [2024-11-24 01:06:46,144 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 01:06:46,146 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:06:46,147 INFO L158 Benchmark]: Toolchain (without parser) took 25519.63ms. Allocated memory was 117.4MB in the beginning and 520.1MB in the end (delta: 402.7MB). Free memory was 91.1MB in the beginning and 410.6MB in the end (delta: -319.5MB). Peak memory consumption was 88.1MB. Max. memory is 16.1GB. [2024-11-24 01:06:46,147 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 167.8MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:06:46,148 INFO L158 Benchmark]: CACSL2BoogieTranslator took 837.77ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 53.0MB in the end (delta: 38.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-24 01:06:46,148 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.19ms. Allocated memory is still 117.4MB. Free memory was 53.0MB in the beginning and 50.7MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:06:46,149 INFO L158 Benchmark]: Boogie Preprocessor took 62.47ms. Allocated memory is still 117.4MB. Free memory was 50.7MB in the beginning and 48.1MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:06:46,149 INFO L158 Benchmark]: RCFGBuilder took 980.97ms. Allocated memory is still 117.4MB. Free memory was 48.1MB in the beginning and 55.1MB in the end (delta: -7.0MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2024-11-24 01:06:46,149 INFO L158 Benchmark]: TraceAbstraction took 23563.61ms. Allocated memory was 117.4MB in the beginning and 520.1MB in the end (delta: 402.7MB). Free memory was 54.5MB in the beginning and 410.6MB in the end (delta: -356.1MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. [2024-11-24 01:06:46,150 INFO L158 Benchmark]: Witness Printer took 4.42ms. Allocated memory is still 520.1MB. Free memory was 410.6MB in the beginning and 410.6MB in the end (delta: 45.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-24 01:06:46,151 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 167.8MB. Free memory is still 103.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 837.77ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 53.0MB in the end (delta: 38.1MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.19ms. Allocated memory is still 117.4MB. Free memory was 53.0MB in the beginning and 50.7MB in the end (delta: 2.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 62.47ms. Allocated memory is still 117.4MB. Free memory was 50.7MB in the beginning and 48.1MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 980.97ms. Allocated memory is still 117.4MB. Free memory was 48.1MB in the beginning and 55.1MB in the end (delta: -7.0MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. * TraceAbstraction took 23563.61ms. Allocated memory was 117.4MB in the beginning and 520.1MB in the end (delta: 402.7MB). Free memory was 54.5MB in the beginning and 410.6MB in the end (delta: -356.1MB). Peak memory consumption was 40.5MB. Max. memory is 16.1GB. * Witness Printer took 4.42ms. Allocated memory is still 520.1MB. Free memory was 410.6MB in the beginning and 410.6MB in the end (delta: 45.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1242]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1242. Possible FailurePath: [L1223-L1226] 0 struct s { int datum; struct s *next; } *A, *B; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1243] 0 pthread_t t1; [L1244] 0 struct s *p = malloc(sizeof(struct s)); [L1245] CALL 0 init(p,9) [L1228] 0 p -> datum = x VAL [A={0:0}, A_mutex={1:0}, B={0:0}, B_mutex={2:0}] [L1229] 0 p -> next = ((void *)0) [L1245] RET 0 init(p,9) [L1246] 0 A = malloc(sizeof(struct s)) [L1247] CALL 0 init(A,3) [L1228] 0 p -> datum = x VAL [A={-3:0}, A_mutex={1:0}, B={0:0}, B_mutex={2:0}] [L1229] 0 p -> next = ((void *)0) [L1247] RET 0 init(A,3) [L1248] 0 A->next = p [L1249] 0 B = malloc(sizeof(struct s)) [L1250] CALL 0 init(B,5) [L1228] 0 p -> datum = x VAL [A={-3:0}, A_mutex={1:0}, B={-4:0}, B_mutex={2:0}] [L1229] 0 p -> next = ((void *)0) [L1250] RET 0 init(B,5) [L1251] 0 p = malloc(sizeof(struct s)) [L1252] CALL 0 init(p,9) [L1228] 0 p -> datum = x VAL [A={-3:0}, A_mutex={1:0}, B={-4:0}, B_mutex={2:0}] [L1229] 0 p -> next = ((void *)0) [L1252] RET 0 init(p,9) [L1253] 0 B->next = p [L1254] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={-3:0}, A_mutex={1:0}, B={-4:0}, B_mutex={2:0}, \old(arg)={0:0}, p={-5:0}, t1=-1] [L1256] EXPR 0 A->next [L1256] 0 p = A->next [L1257] 0 p->datum [L1260] EXPR 0 B->next [L1260] 0 p = B->next [L1261] 0 p->datum [L1263] 0 return 0; VAL [A={-3:0}, A_mutex={1:0}, B={-4:0}, B_mutex={2:0}, \old(arg)={0:0}, \result=0, p={-5:0}, t1=-1] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1254]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 113 locations, 54 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 23.4s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4882 SdHoareTripleChecker+Valid, 11.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3934 mSDsluCounter, 2168 SdHoareTripleChecker+Invalid, 9.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1972 mSDsCounter, 330 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14077 IncrementalHoareTripleChecker+Invalid, 14407 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 330 mSolverCounterUnsat, 196 mSDtfsCounter, 14077 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=687occurred in iteration=15, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 7.8s InterpolantComputationTime, 280 NumberOfCodeBlocks, 280 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 238 ConstructedInterpolants, 0 QuantifiedInterpolants, 3257 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-24 01:06:46,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/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_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/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 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:06:48,717 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:06:48,803 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-24 01:06:48,809 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:06:48,809 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:06:48,874 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:06:48,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:06:48,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:06:48,878 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:06:48,878 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:06:48,879 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:06:48,879 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:06:48,880 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:06:48,880 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:06:48,880 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:06:48,880 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:06:48,881 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:06:48,881 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:06:48,881 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:06:48,881 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:06:48,882 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 01:06:48,882 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 01:06:48,882 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 01:06:48,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:06:48,882 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:06:48,882 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 01:06:48,882 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 01:06:48,882 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:06:48,883 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:06:48,883 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:06:48,883 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:06:48,884 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:06:48,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:06:48,884 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:06:48,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:06:48,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:06:48,884 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:06:48,884 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:06:48,884 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:06:48,884 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:06:48,884 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:06:48,885 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:06:48,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:06:48,885 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 01:06:48,885 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 01:06:48,885 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:06:48,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:06:48,885 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:06:48,885 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:06:48,885 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_2297515c-9824-49e1-b8ed-38f50e619066/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 -> 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 [2024-11-24 01:06:49,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:06:49,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:06:49,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:06:49,164 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:06:49,165 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:06:49,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i [2024-11-24 01:06:52,280 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/data/a896053f4/d23dd92a98fd41b19256c559c9fd951a/FLAG9a4a3fb2a [2024-11-24 01:06:52,661 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:06:52,662 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/sv-benchmarks/c/goblint-regression/09-regions_04-list2_nr.i [2024-11-24 01:06:52,692 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/data/a896053f4/d23dd92a98fd41b19256c559c9fd951a/FLAG9a4a3fb2a [2024-11-24 01:06:52,707 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/data/a896053f4/d23dd92a98fd41b19256c559c9fd951a [2024-11-24 01:06:52,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:06:52,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:06:52,712 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:06:52,712 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:06:52,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:06:52,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:06:52" (1/1) ... [2024-11-24 01:06:52,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ba5469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:52, skipping insertion in model container [2024-11-24 01:06:52,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:06:52" (1/1) ... [2024-11-24 01:06:52,757 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:06:53,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:06:53,324 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:06:53,383 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:06:53,494 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:06:53,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53 WrapperNode [2024-11-24 01:06:53,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:06:53,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:06:53,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:06:53,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:06:53,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53" (1/1) ... [2024-11-24 01:06:53,537 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53" (1/1) ... [2024-11-24 01:06:53,572 INFO L138 Inliner]: procedures = 369, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 90 [2024-11-24 01:06:53,575 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:06:53,576 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:06:53,577 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:06:53,578 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:06:53,589 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53" (1/1) ... [2024-11-24 01:06:53,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53" (1/1) ... [2024-11-24 01:06:53,596 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53" (1/1) ... [2024-11-24 01:06:53,622 INFO L175 MemorySlicer]: Split 30 memory accesses to 3 slices as follows [5, 5, 20]. 67 percent of accesses are in the largest equivalence class. The 10 initializations are split as follows [5, 5, 0]. The 12 writes are split as follows [0, 0, 12]. [2024-11-24 01:06:53,625 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53" (1/1) ... [2024-11-24 01:06:53,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53" (1/1) ... [2024-11-24 01:06:53,644 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53" (1/1) ... [2024-11-24 01:06:53,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53" (1/1) ... [2024-11-24 01:06:53,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53" (1/1) ... [2024-11-24 01:06:53,656 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53" (1/1) ... [2024-11-24 01:06:53,657 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53" (1/1) ... [2024-11-24 01:06:53,664 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:06:53,665 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:06:53,665 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:06:53,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:06:53,666 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53" (1/1) ... [2024-11-24 01:06:53,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:06:53,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:06:53,739 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:06:53,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:06:53,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-24 01:06:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-24 01:06:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-24 01:06:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 01:06:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 01:06:53,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-24 01:06:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-24 01:06:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-24 01:06:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-24 01:06:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-24 01:06:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-24 01:06:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-24 01:06:53,771 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-24 01:06:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-24 01:06:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:06:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:06:53,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 01:06:53,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 01:06:53,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-24 01:06:53,773 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-24 01:06:53,773 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-24 01:06:53,773 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:06:53,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:06:53,775 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-24 01:06:53,985 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:06:53,988 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:06:54,681 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-24 01:06:54,683 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:06:55,047 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:06:55,047 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-24 01:06:55,048 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:06:55 BoogieIcfgContainer [2024-11-24 01:06:55,048 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:06:55,050 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:06:55,050 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:06:55,056 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:06:55,056 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:06:52" (1/3) ... [2024-11-24 01:06:55,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558839e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:06:55, skipping insertion in model container [2024-11-24 01:06:55,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:06:53" (2/3) ... [2024-11-24 01:06:55,059 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558839e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:06:55, skipping insertion in model container [2024-11-24 01:06:55,059 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:06:55" (3/3) ... [2024-11-24 01:06:55,060 INFO L128 eAbstractionObserver]: Analyzing ICFG 09-regions_04-list2_nr.i [2024-11-24 01:06:55,077 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:06:55,079 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09-regions_04-list2_nr.i that has 2 procedures, 84 locations, 1 initial locations, 0 loop locations, and 41 error locations. [2024-11-24 01:06:55,080 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-24 01:06:55,183 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-24 01:06:55,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 83 transitions, 170 flow [2024-11-24 01:06:55,306 INFO L124 PetriNetUnfolderBase]: 0/82 cut-off events. [2024-11-24 01:06:55,309 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:06:55,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 82 events. 0/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 181 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-11-24 01:06:55,312 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 83 transitions, 170 flow [2024-11-24 01:06:55,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 82 transitions, 167 flow [2024-11-24 01:06:55,333 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:06:55,351 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;@2c7f69f5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:06:55,351 INFO L334 AbstractCegarLoop]: Starting to check reachability of 54 error locations. [2024-11-24 01:06:55,355 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-24 01:06:55,356 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-11-24 01:06:55,356 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:06:55,356 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:55,357 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-24 01:06:55,357 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:55,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:55,363 INFO L85 PathProgramCache]: Analyzing trace with hash 11348, now seen corresponding path program 1 times [2024-11-24 01:06:55,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:06:55,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [267556133] [2024-11-24 01:06:55,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:55,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:55,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:06:55,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:06:55,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:06:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:55,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:06:55,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:06:55,600 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 6 treesize of output 7 [2024-11-24 01:06:55,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:55,622 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:06:55,623 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:06:55,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [267556133] [2024-11-24 01:06:55,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [267556133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:55,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:55,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-24 01:06:55,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684234145] [2024-11-24 01:06:55,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:55,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:06:55,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:06:55,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:06:55,667 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:06:55,820 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 83 [2024-11-24 01:06:55,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 82 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:55,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:55,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 83 [2024-11-24 01:06:55,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:56,199 INFO L124 PetriNetUnfolderBase]: 99/370 cut-off events. [2024-11-24 01:06:56,200 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:06:56,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605 conditions, 370 events. 99/370 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1819 event pairs, 99 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 564. Up to 223 conditions per place. [2024-11-24 01:06:56,208 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 28 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2024-11-24 01:06:56,210 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 215 flow [2024-11-24 01:06:56,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:06:56,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:06:56,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 169 transitions. [2024-11-24 01:06:56,227 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.678714859437751 [2024-11-24 01:06:56,229 INFO L175 Difference]: Start difference. First operand has 86 places, 82 transitions, 167 flow. Second operand 3 states and 169 transitions. [2024-11-24 01:06:56,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 215 flow [2024-11-24 01:06:56,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 214 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:06:56,244 INFO L231 Difference]: Finished difference. Result has 79 places, 74 transitions, 158 flow [2024-11-24 01:06:56,248 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=79, PETRI_TRANSITIONS=74} [2024-11-24 01:06:56,251 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -7 predicate places. [2024-11-24 01:06:56,253 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 74 transitions, 158 flow [2024-11-24 01:06:56,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:56,253 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:56,254 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-11-24 01:06:56,264 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:06:56,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:56,455 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:56,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:56,456 INFO L85 PathProgramCache]: Analyzing trace with hash 11349, now seen corresponding path program 1 times [2024-11-24 01:06:56,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:06:56,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108588122] [2024-11-24 01:06:56,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:56,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:56,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:06:56,460 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:06:56,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:06:56,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:56,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:06:56,562 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:06:56,582 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 6 treesize of output 5 [2024-11-24 01:06:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:56,598 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:06:56,598 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:06:56,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108588122] [2024-11-24 01:06:56,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108588122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:56,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:56,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-24 01:06:56,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267863573] [2024-11-24 01:06:56,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:56,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:06:56,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:06:56,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:06:56,601 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:06:56,784 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 83 [2024-11-24 01:06:56,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 74 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:56,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:56,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 83 [2024-11-24 01:06:56,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:57,049 INFO L124 PetriNetUnfolderBase]: 99/362 cut-off events. [2024-11-24 01:06:57,049 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-24 01:06:57,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 597 conditions, 362 events. 99/362 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1810 event pairs, 99 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 572. Up to 223 conditions per place. [2024-11-24 01:06:57,052 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 24 selfloop transitions, 4 changer transitions 0/66 dead transitions. [2024-11-24 01:06:57,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 198 flow [2024-11-24 01:06:57,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:06:57,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:06:57,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2024-11-24 01:06:57,055 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7108433734939759 [2024-11-24 01:06:57,055 INFO L175 Difference]: Start difference. First operand has 79 places, 74 transitions, 158 flow. Second operand 3 states and 177 transitions. [2024-11-24 01:06:57,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 198 flow [2024-11-24 01:06:57,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 66 transitions, 190 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 01:06:57,058 INFO L231 Difference]: Finished difference. Result has 71 places, 66 transitions, 142 flow [2024-11-24 01:06:57,058 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=71, PETRI_TRANSITIONS=66} [2024-11-24 01:06:57,059 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -15 predicate places. [2024-11-24 01:06:57,059 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 66 transitions, 142 flow [2024-11-24 01:06:57,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:57,060 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:57,060 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-24 01:06:57,070 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:06:57,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:57,264 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:57,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:57,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1900025205, now seen corresponding path program 1 times [2024-11-24 01:06:57,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:06:57,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [977285633] [2024-11-24 01:06:57,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:57,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:57,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:06:57,268 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:06:57,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:06:57,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:57,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:06:57,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:06:57,414 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 6 treesize of output 7 [2024-11-24 01:06:57,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:57,430 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:06:57,431 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:06:57,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977285633] [2024-11-24 01:06:57,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977285633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:57,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:57,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:06:57,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403333371] [2024-11-24 01:06:57,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:57,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:06:57,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:06:57,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:06:57,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:06:57,572 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 83 [2024-11-24 01:06:57,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 66 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:57,574 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:57,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 83 [2024-11-24 01:06:57,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:57,799 INFO L124 PetriNetUnfolderBase]: 110/392 cut-off events. [2024-11-24 01:06:57,799 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-24 01:06:57,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 392 events. 110/392 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1994 event pairs, 110 based on Foata normal form. 1/338 useless extension candidates. Maximal degree in co-relation 626. Up to 248 conditions per place. [2024-11-24 01:06:57,807 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 28 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2024-11-24 01:06:57,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 63 transitions, 194 flow [2024-11-24 01:06:57,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:06:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:06:57,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 185 transitions. [2024-11-24 01:06:57,812 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7429718875502008 [2024-11-24 01:06:57,812 INFO L175 Difference]: Start difference. First operand has 71 places, 66 transitions, 142 flow. Second operand 3 states and 185 transitions. [2024-11-24 01:06:57,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 63 transitions, 194 flow [2024-11-24 01:06:57,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 63 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 01:06:57,816 INFO L231 Difference]: Finished difference. Result has 68 places, 63 transitions, 130 flow [2024-11-24 01:06:57,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=68, PETRI_TRANSITIONS=63} [2024-11-24 01:06:57,818 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -18 predicate places. [2024-11-24 01:06:57,818 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 63 transitions, 130 flow [2024-11-24 01:06:57,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:57,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:57,818 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-24 01:06:57,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:06:58,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:58,019 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:58,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:58,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1900025206, now seen corresponding path program 1 times [2024-11-24 01:06:58,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:06:58,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1672538085] [2024-11-24 01:06:58,020 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:58,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:58,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:06:58,022 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:06:58,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:06:58,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:58,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:06:58,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:06:58,192 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 6 treesize of output 5 [2024-11-24 01:06:58,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:58,226 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:06:58,227 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:06:58,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672538085] [2024-11-24 01:06:58,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672538085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:58,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:58,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:06:58,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173230395] [2024-11-24 01:06:58,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:58,228 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:06:58,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:06:58,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:06:58,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:06:58,418 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 83 [2024-11-24 01:06:58,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 63 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:58,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:58,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 83 [2024-11-24 01:06:58,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:58,605 INFO L124 PetriNetUnfolderBase]: 99/352 cut-off events. [2024-11-24 01:06:58,605 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-24 01:06:58,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 352 events. 99/352 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1744 event pairs, 99 based on Foata normal form. 11/312 useless extension candidates. Maximal degree in co-relation 575. Up to 225 conditions per place. [2024-11-24 01:06:58,608 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 27 selfloop transitions, 1 changer transitions 0/60 dead transitions. [2024-11-24 01:06:58,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 180 flow [2024-11-24 01:06:58,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:06:58,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:06:58,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-11-24 01:06:58,611 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.751004016064257 [2024-11-24 01:06:58,611 INFO L175 Difference]: Start difference. First operand has 68 places, 63 transitions, 130 flow. Second operand 3 states and 187 transitions. [2024-11-24 01:06:58,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 180 flow [2024-11-24 01:06:58,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:06:58,612 INFO L231 Difference]: Finished difference. Result has 66 places, 60 transitions, 125 flow [2024-11-24 01:06:58,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=66, PETRI_TRANSITIONS=60} [2024-11-24 01:06:58,616 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -20 predicate places. [2024-11-24 01:06:58,617 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 60 transitions, 125 flow [2024-11-24 01:06:58,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:58,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:58,618 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:06:58,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:06:58,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:58,818 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:58,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:58,819 INFO L85 PathProgramCache]: Analyzing trace with hash 147380253, now seen corresponding path program 1 times [2024-11-24 01:06:58,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:06:58,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1100348722] [2024-11-24 01:06:58,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:58,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:58,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:06:58,824 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:06:58,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:06:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:58,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:06:58,968 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:06:59,024 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-24 01:06:59,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-24 01:06:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:06:59,038 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:06:59,038 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:06:59,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1100348722] [2024-11-24 01:06:59,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1100348722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:06:59,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:06:59,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:06:59,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865461065] [2024-11-24 01:06:59,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:06:59,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:06:59,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:06:59,040 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:06:59,040 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:06:59,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 83 [2024-11-24 01:06:59,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 60 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:59,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:06:59,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 83 [2024-11-24 01:06:59,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:06:59,576 INFO L124 PetriNetUnfolderBase]: 110/357 cut-off events. [2024-11-24 01:06:59,576 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:06:59,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 617 conditions, 357 events. 110/357 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1712 event pairs, 110 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 606. Up to 246 conditions per place. [2024-11-24 01:06:59,580 INFO L140 encePairwiseOnDemand]: 78/83 looper letters, 31 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2024-11-24 01:06:59,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 57 transitions, 185 flow [2024-11-24 01:06:59,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:06:59,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-24 01:06:59,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 224 transitions. [2024-11-24 01:06:59,582 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6746987951807228 [2024-11-24 01:06:59,582 INFO L175 Difference]: Start difference. First operand has 66 places, 60 transitions, 125 flow. Second operand 4 states and 224 transitions. [2024-11-24 01:06:59,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 57 transitions, 185 flow [2024-11-24 01:06:59,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 57 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:06:59,585 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 122 flow [2024-11-24 01:06:59,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-11-24 01:06:59,586 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -21 predicate places. [2024-11-24 01:06:59,586 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 122 flow [2024-11-24 01:06:59,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:06:59,586 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:06:59,586 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:06:59,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:06:59,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:59,787 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:06:59,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:06:59,787 INFO L85 PathProgramCache]: Analyzing trace with hash 147380254, now seen corresponding path program 1 times [2024-11-24 01:06:59,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:06:59,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2049611272] [2024-11-24 01:06:59,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:06:59,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:06:59,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:06:59,790 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:06:59,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:06:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:06:59,936 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 01:06:59,938 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:06:59,951 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 6 treesize of output 5 [2024-11-24 01:07:00,000 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-24 01:07:00,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-11-24 01:07:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:07:00,042 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:07:00,042 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:07:00,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049611272] [2024-11-24 01:07:00,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049611272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:00,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:07:00,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:07:00,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146453681] [2024-11-24 01:07:00,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:00,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:07:00,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:07:00,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:07:00,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:07:00,222 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 83 [2024-11-24 01:07:00,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 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) [2024-11-24 01:07:00,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:07:00,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 83 [2024-11-24 01:07:00,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:07:00,406 INFO L124 PetriNetUnfolderBase]: 99/326 cut-off events. [2024-11-24 01:07:00,406 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-24 01:07:00,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561 conditions, 326 events. 99/326 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1516 event pairs, 99 based on Foata normal form. 12/308 useless extension candidates. Maximal degree in co-relation 551. Up to 223 conditions per place. [2024-11-24 01:07:00,408 INFO L140 encePairwiseOnDemand]: 79/83 looper letters, 27 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2024-11-24 01:07:00,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 54 transitions, 172 flow [2024-11-24 01:07:00,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:07:00,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:07:00,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 187 transitions. [2024-11-24 01:07:00,410 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.751004016064257 [2024-11-24 01:07:00,410 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 122 flow. Second operand 3 states and 187 transitions. [2024-11-24 01:07:00,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 54 transitions, 172 flow [2024-11-24 01:07:00,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 54 transitions, 169 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 01:07:00,411 INFO L231 Difference]: Finished difference. Result has 62 places, 54 transitions, 115 flow [2024-11-24 01:07:00,412 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=62, PETRI_TRANSITIONS=54} [2024-11-24 01:07:00,412 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -24 predicate places. [2024-11-24 01:07:00,412 INFO L471 AbstractCegarLoop]: Abstraction has has 62 places, 54 transitions, 115 flow [2024-11-24 01:07:00,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 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) [2024-11-24 01:07:00,413 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:07:00,413 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:07:00,425 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:07:00,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:00,618 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:07:00,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:00,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1015971961, now seen corresponding path program 1 times [2024-11-24 01:07:00,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:07:00,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265114863] [2024-11-24 01:07:00,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:00,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:00,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:00,621 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:00,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:07:00,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:00,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-24 01:07:00,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:07:00,826 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 6 treesize of output 7 [2024-11-24 01:07:00,869 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-24 01:07:00,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-24 01:07:01,002 INFO L349 Elim1Store]: treesize reduction 66, result has 34.7 percent of original size [2024-11-24 01:07:01,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 48 [2024-11-24 01:07:01,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 01:07:01,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-11-24 01:07:01,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-11-24 01:07:01,404 INFO L349 Elim1Store]: treesize reduction 84, result has 35.4 percent of original size [2024-11-24 01:07:01,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 71 [2024-11-24 01:07:01,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 41 [2024-11-24 01:07:01,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 41 [2024-11-24 01:07:01,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 41 [2024-11-24 01:07:02,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 23 [2024-11-24 01:07:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:07:03,082 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:07:03,083 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:07:03,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265114863] [2024-11-24 01:07:03,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265114863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:03,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:07:03,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:07:03,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682228442] [2024-11-24 01:07:03,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:03,083 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:07:03,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:07:03,084 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:07:03,084 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:07:06,344 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-24 01:07:06,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 115 flow. Second operand has 10 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:06,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:07:06,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-24 01:07:06,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:07:08,429 INFO L124 PetriNetUnfolderBase]: 167/488 cut-off events. [2024-11-24 01:07:08,430 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-24 01:07:08,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 488 events. 167/488 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 2508 event pairs, 6 based on Foata normal form. 0/453 useless extension candidates. Maximal degree in co-relation 860. Up to 101 conditions per place. [2024-11-24 01:07:08,432 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 64 selfloop transitions, 22 changer transitions 0/102 dead transitions. [2024-11-24 01:07:08,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 102 transitions, 383 flow [2024-11-24 01:07:08,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:07:08,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 01:07:08,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 467 transitions. [2024-11-24 01:07:08,435 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46887550200803213 [2024-11-24 01:07:08,435 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 115 flow. Second operand 12 states and 467 transitions. [2024-11-24 01:07:08,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 102 transitions, 383 flow [2024-11-24 01:07:08,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 102 transitions, 382 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:07:08,439 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 209 flow [2024-11-24 01:07:08,440 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=209, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2024-11-24 01:07:08,440 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -12 predicate places. [2024-11-24 01:07:08,440 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 209 flow [2024-11-24 01:07:08,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.5) internal successors, (325), 10 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:08,441 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:07:08,441 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:07:08,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:07:08,645 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:08,645 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:07:08,645 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:08,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1015971960, now seen corresponding path program 1 times [2024-11-24 01:07:08,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:07:08,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881206085] [2024-11-24 01:07:08,646 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:08,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:08,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:08,648 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:08,649 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:07:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:08,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-24 01:07:08,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:07:08,837 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 6 treesize of output 7 [2024-11-24 01:07:08,845 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 6 treesize of output 5 [2024-11-24 01:07:08,894 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-24 01:07:08,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-24 01:07:08,927 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-24 01:07:08,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-24 01:07:09,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:07:09,046 INFO L349 Elim1Store]: treesize reduction 33, result has 25.0 percent of original size [2024-11-24 01:07:09,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 20 [2024-11-24 01:07:09,061 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 01:07:09,114 INFO L349 Elim1Store]: treesize reduction 66, result has 34.7 percent of original size [2024-11-24 01:07:09,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 48 [2024-11-24 01:07:09,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:09,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2024-11-24 01:07:09,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:09,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2024-11-24 01:07:09,321 INFO L349 Elim1Store]: treesize reduction 12, result has 55.6 percent of original size [2024-11-24 01:07:09,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 28 [2024-11-24 01:07:09,361 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-24 01:07:09,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 28 [2024-11-24 01:07:09,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2024-11-24 01:07:09,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:09,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2024-11-24 01:07:09,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:09,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2024-11-24 01:07:09,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:09,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 21 [2024-11-24 01:07:09,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-24 01:07:10,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:07:10,057 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:07:10,057 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:07:10,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881206085] [2024-11-24 01:07:10,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881206085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:10,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:07:10,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:07:10,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026039392] [2024-11-24 01:07:10,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:10,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-24 01:07:10,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:07:10,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-24 01:07:10,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:07:11,901 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 83 [2024-11-24 01:07:11,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 209 flow. Second operand has 9 states, 9 states have (on average 42.666666666666664) internal successors, (384), 9 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:11,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:07:11,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 83 [2024-11-24 01:07:11,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:07:13,255 INFO L124 PetriNetUnfolderBase]: 176/487 cut-off events. [2024-11-24 01:07:13,255 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2024-11-24 01:07:13,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 487 events. 176/487 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2518 event pairs, 2 based on Foata normal form. 15/474 useless extension candidates. Maximal degree in co-relation 1051. Up to 247 conditions per place. [2024-11-24 01:07:13,258 INFO L140 encePairwiseOnDemand]: 74/83 looper letters, 66 selfloop transitions, 15 changer transitions 0/94 dead transitions. [2024-11-24 01:07:13,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 94 transitions, 443 flow [2024-11-24 01:07:13,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:07:13,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-24 01:07:13,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 448 transitions. [2024-11-24 01:07:13,260 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5997322623828648 [2024-11-24 01:07:13,261 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 209 flow. Second operand 9 states and 448 transitions. [2024-11-24 01:07:13,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 94 transitions, 443 flow [2024-11-24 01:07:13,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 94 transitions, 439 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-24 01:07:13,264 INFO L231 Difference]: Finished difference. Result has 78 places, 66 transitions, 247 flow [2024-11-24 01:07:13,265 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=247, PETRI_PLACES=78, PETRI_TRANSITIONS=66} [2024-11-24 01:07:13,265 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -8 predicate places. [2024-11-24 01:07:13,265 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 66 transitions, 247 flow [2024-11-24 01:07:13,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 42.666666666666664) internal successors, (384), 9 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:13,266 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:07:13,266 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:07:13,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 01:07:13,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:13,466 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:07:13,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:13,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1049749605, now seen corresponding path program 1 times [2024-11-24 01:07:13,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:07:13,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26833592] [2024-11-24 01:07:13,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:13,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:13,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:13,469 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:13,470 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:07:13,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:13,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-24 01:07:13,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:07:13,669 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 6 treesize of output 5 [2024-11-24 01:07:13,677 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 6 treesize of output 7 [2024-11-24 01:07:13,723 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-24 01:07:13,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-11-24 01:07:13,759 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-24 01:07:13,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-24 01:07:13,900 INFO L349 Elim1Store]: treesize reduction 66, result has 34.7 percent of original size [2024-11-24 01:07:13,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 48 [2024-11-24 01:07:13,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:07:13,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 15 [2024-11-24 01:07:13,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 01:07:14,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2024-11-24 01:07:14,058 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:14,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 42 [2024-11-24 01:07:14,196 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-11-24 01:07:14,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2024-11-24 01:07:14,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2024-11-24 01:07:14,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:14,343 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:14,362 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2024-11-24 01:07:14,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2024-11-24 01:07:14,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:14,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 39 [2024-11-24 01:07:14,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:14,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 17 [2024-11-24 01:07:14,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-24 01:07:14,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:07:14,791 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:07:14,791 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:07:14,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26833592] [2024-11-24 01:07:14,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26833592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:14,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:07:14,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-24 01:07:14,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671212463] [2024-11-24 01:07:14,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:14,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:07:14,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:07:14,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:07:14,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-24 01:07:17,064 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 83 [2024-11-24 01:07:17,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 66 transitions, 247 flow. Second operand has 10 states, 10 states have (on average 33.6) internal successors, (336), 10 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:17,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:07:17,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 83 [2024-11-24 01:07:17,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:07:18,565 INFO L124 PetriNetUnfolderBase]: 176/489 cut-off events. [2024-11-24 01:07:18,565 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2024-11-24 01:07:18,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1101 conditions, 489 events. 176/489 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2473 event pairs, 46 based on Foata normal form. 12/471 useless extension candidates. Maximal degree in co-relation 1083. Up to 211 conditions per place. [2024-11-24 01:07:18,568 INFO L140 encePairwiseOnDemand]: 73/83 looper letters, 71 selfloop transitions, 18 changer transitions 0/105 dead transitions. [2024-11-24 01:07:18,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 105 transitions, 511 flow [2024-11-24 01:07:18,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:07:18,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 01:07:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 470 transitions. [2024-11-24 01:07:18,571 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4718875502008032 [2024-11-24 01:07:18,571 INFO L175 Difference]: Start difference. First operand has 78 places, 66 transitions, 247 flow. Second operand 12 states and 470 transitions. [2024-11-24 01:07:18,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 105 transitions, 511 flow [2024-11-24 01:07:18,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 105 transitions, 497 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-24 01:07:18,575 INFO L231 Difference]: Finished difference. Result has 88 places, 68 transitions, 291 flow [2024-11-24 01:07:18,576 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=291, PETRI_PLACES=88, PETRI_TRANSITIONS=68} [2024-11-24 01:07:18,576 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 2 predicate places. [2024-11-24 01:07:18,576 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 68 transitions, 291 flow [2024-11-24 01:07:18,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 33.6) internal successors, (336), 10 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:18,577 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:07:18,577 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] [2024-11-24 01:07:18,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:07:18,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:18,781 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:07:18,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:18,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1978687745, now seen corresponding path program 1 times [2024-11-24 01:07:18,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:07:18,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1198493479] [2024-11-24 01:07:18,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:18,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:18,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:18,786 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:18,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:07:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:18,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:07:18,966 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:07:18,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2024-11-24 01:07:18,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:07:18,989 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:07:18,989 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:07:18,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198493479] [2024-11-24 01:07:18,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198493479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:18,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:07:18,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:07:18,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905265907] [2024-11-24 01:07:18,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:18,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:07:18,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:07:18,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:07:18,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:07:18,990 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 83 [2024-11-24 01:07:18,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 68 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:18,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:07:18,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 83 [2024-11-24 01:07:18,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:07:19,250 INFO L124 PetriNetUnfolderBase]: 107/351 cut-off events. [2024-11-24 01:07:19,250 INFO L125 PetriNetUnfolderBase]: For 268/268 co-relation queries the response was YES. [2024-11-24 01:07:19,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 832 conditions, 351 events. 107/351 cut-off events. For 268/268 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1776 event pairs, 49 based on Foata normal form. 6/342 useless extension candidates. Maximal degree in co-relation 811. Up to 174 conditions per place. [2024-11-24 01:07:19,253 INFO L140 encePairwiseOnDemand]: 77/83 looper letters, 57 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2024-11-24 01:07:19,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 88 transitions, 482 flow [2024-11-24 01:07:19,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:07:19,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-24 01:07:19,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 213 transitions. [2024-11-24 01:07:19,255 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8554216867469879 [2024-11-24 01:07:19,255 INFO L175 Difference]: Start difference. First operand has 88 places, 68 transitions, 291 flow. Second operand 3 states and 213 transitions. [2024-11-24 01:07:19,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 88 transitions, 482 flow [2024-11-24 01:07:19,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 88 transitions, 409 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-11-24 01:07:19,259 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 245 flow [2024-11-24 01:07:19,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=245, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2024-11-24 01:07:19,260 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -8 predicate places. [2024-11-24 01:07:19,260 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 245 flow [2024-11-24 01:07:19,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:19,261 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:07:19,261 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] [2024-11-24 01:07:19,272 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 01:07:19,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:19,462 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:07:19,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:19,462 INFO L85 PathProgramCache]: Analyzing trace with hash -2002413156, now seen corresponding path program 1 times [2024-11-24 01:07:19,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:07:19,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1245553489] [2024-11-24 01:07:19,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:19,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:19,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:19,464 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:19,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:07:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:19,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 01:07:19,636 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:07:19,645 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 6 treesize of output 5 [2024-11-24 01:07:19,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:07:19,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 01:07:19,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-24 01:07:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:07:19,768 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:07:19,768 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:07:19,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245553489] [2024-11-24 01:07:19,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245553489] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:19,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:07:19,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:07:19,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70731567] [2024-11-24 01:07:19,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:19,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:07:19,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:07:19,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:07:19,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:07:20,080 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 83 [2024-11-24 01:07:20,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 245 flow. Second operand has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:20,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:07:20,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 83 [2024-11-24 01:07:20,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:07:20,459 INFO L124 PetriNetUnfolderBase]: 143/452 cut-off events. [2024-11-24 01:07:20,459 INFO L125 PetriNetUnfolderBase]: For 138/139 co-relation queries the response was YES. [2024-11-24 01:07:20,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 452 events. 143/452 cut-off events. For 138/139 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2410 event pairs, 13 based on Foata normal form. 10/442 useless extension candidates. Maximal degree in co-relation 1019. Up to 183 conditions per place. [2024-11-24 01:07:20,462 INFO L140 encePairwiseOnDemand]: 76/83 looper letters, 59 selfloop transitions, 14 changer transitions 0/92 dead transitions. [2024-11-24 01:07:20,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 92 transitions, 473 flow [2024-11-24 01:07:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:07:20,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-24 01:07:20,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 305 transitions. [2024-11-24 01:07:20,464 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7349397590361446 [2024-11-24 01:07:20,464 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 245 flow. Second operand 5 states and 305 transitions. [2024-11-24 01:07:20,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 92 transitions, 473 flow [2024-11-24 01:07:20,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 92 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:07:20,467 INFO L231 Difference]: Finished difference. Result has 83 places, 71 transitions, 298 flow [2024-11-24 01:07:20,467 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=298, PETRI_PLACES=83, PETRI_TRANSITIONS=71} [2024-11-24 01:07:20,468 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, -3 predicate places. [2024-11-24 01:07:20,468 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 71 transitions, 298 flow [2024-11-24 01:07:20,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.0) internal successors, (216), 4 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:20,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:07:20,469 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] [2024-11-24 01:07:20,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 01:07:20,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:20,669 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:07:20,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:20,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2002413157, now seen corresponding path program 1 times [2024-11-24 01:07:20,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:07:20,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1966154958] [2024-11-24 01:07:20,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:20,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:20,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:20,672 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:20,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:07:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:20,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:07:20,833 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:07:20,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 01:07:20,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-24 01:07:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:07:20,918 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:07:20,918 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:07:20,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966154958] [2024-11-24 01:07:20,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966154958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:20,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:07:20,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:07:20,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737221031] [2024-11-24 01:07:20,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:20,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:07:20,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:07:20,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:07:20,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:07:21,455 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 83 [2024-11-24 01:07:21,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 71 transitions, 298 flow. Second operand has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:21,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:07:21,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 83 [2024-11-24 01:07:21,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:07:21,855 INFO L124 PetriNetUnfolderBase]: 143/440 cut-off events. [2024-11-24 01:07:21,855 INFO L125 PetriNetUnfolderBase]: For 236/237 co-relation queries the response was YES. [2024-11-24 01:07:21,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 440 events. 143/440 cut-off events. For 236/237 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2300 event pairs, 58 based on Foata normal form. 11/435 useless extension candidates. Maximal degree in co-relation 1078. Up to 191 conditions per place. [2024-11-24 01:07:21,858 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 49 selfloop transitions, 21 changer transitions 0/89 dead transitions. [2024-11-24 01:07:21,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 89 transitions, 494 flow [2024-11-24 01:07:21,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:07:21,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-24 01:07:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 351 transitions. [2024-11-24 01:07:21,861 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7048192771084337 [2024-11-24 01:07:21,861 INFO L175 Difference]: Start difference. First operand has 83 places, 71 transitions, 298 flow. Second operand 6 states and 351 transitions. [2024-11-24 01:07:21,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 89 transitions, 494 flow [2024-11-24 01:07:21,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 89 transitions, 489 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-24 01:07:21,865 INFO L231 Difference]: Finished difference. Result has 90 places, 72 transitions, 378 flow [2024-11-24 01:07:21,865 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=90, PETRI_TRANSITIONS=72} [2024-11-24 01:07:21,866 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 4 predicate places. [2024-11-24 01:07:21,867 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 72 transitions, 378 flow [2024-11-24 01:07:21,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.0) internal successors, (265), 5 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:21,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:07:21,867 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] [2024-11-24 01:07:21,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 01:07:22,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:22,068 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:07:22,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:22,069 INFO L85 PathProgramCache]: Analyzing trace with hash -463376633, now seen corresponding path program 1 times [2024-11-24 01:07:22,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:07:22,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356593097] [2024-11-24 01:07:22,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:22,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:22,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:22,073 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:22,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:07:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:22,259 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-24 01:07:22,262 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:07:22,264 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 6 treesize of output 7 [2024-11-24 01:07:22,285 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:07:22,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-24 01:07:22,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 01:07:22,340 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-24 01:07:22,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-24 01:07:22,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-24 01:07:22,410 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:07:22,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-24 01:07:22,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-24 01:07:22,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-24 01:07:22,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-24 01:07:22,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2024-11-24 01:07:22,625 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:07:22,625 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-24 01:07:22,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-24 01:07:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:07:22,675 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:07:22,675 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:07:22,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356593097] [2024-11-24 01:07:22,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356593097] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:22,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:07:22,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-24 01:07:22,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292507058] [2024-11-24 01:07:22,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:22,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:07:22,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:07:22,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:07:22,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:07:23,671 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 83 [2024-11-24 01:07:23,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 72 transitions, 378 flow. Second operand has 11 states, 11 states have (on average 44.90909090909091) internal successors, (494), 11 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:23,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:07:23,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 83 [2024-11-24 01:07:23,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:07:24,670 INFO L124 PetriNetUnfolderBase]: 153/462 cut-off events. [2024-11-24 01:07:24,670 INFO L125 PetriNetUnfolderBase]: For 642/642 co-relation queries the response was YES. [2024-11-24 01:07:24,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1331 conditions, 462 events. 153/462 cut-off events. For 642/642 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2434 event pairs, 27 based on Foata normal form. 6/452 useless extension candidates. Maximal degree in co-relation 1307. Up to 72 conditions per place. [2024-11-24 01:07:24,674 INFO L140 encePairwiseOnDemand]: 70/83 looper letters, 63 selfloop transitions, 35 changer transitions 2/115 dead transitions. [2024-11-24 01:07:24,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 115 transitions, 762 flow [2024-11-24 01:07:24,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:07:24,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-24 01:07:24,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 596 transitions. [2024-11-24 01:07:24,676 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5983935742971888 [2024-11-24 01:07:24,677 INFO L175 Difference]: Start difference. First operand has 90 places, 72 transitions, 378 flow. Second operand 12 states and 596 transitions. [2024-11-24 01:07:24,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 115 transitions, 762 flow [2024-11-24 01:07:24,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 115 transitions, 718 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-24 01:07:24,682 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 499 flow [2024-11-24 01:07:24,682 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=499, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-11-24 01:07:24,683 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 14 predicate places. [2024-11-24 01:07:24,683 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 499 flow [2024-11-24 01:07:24,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 44.90909090909091) internal successors, (494), 11 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:24,684 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:07:24,684 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] [2024-11-24 01:07:24,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-24 01:07:24,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:24,884 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:07:24,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:24,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1249020614, now seen corresponding path program 1 times [2024-11-24 01:07:24,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:07:24,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [232523059] [2024-11-24 01:07:24,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:24,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:24,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:24,887 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:24,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:07:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:25,082 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-24 01:07:25,086 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:07:25,091 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 6 treesize of output 7 [2024-11-24 01:07:25,127 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-24 01:07:25,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-24 01:07:25,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:07:25,254 INFO L349 Elim1Store]: treesize reduction 66, result has 34.7 percent of original size [2024-11-24 01:07:25,255 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 48 [2024-11-24 01:07:25,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 01:07:25,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:25,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-11-24 01:07:25,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-11-24 01:07:25,479 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-11-24 01:07:25,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2024-11-24 01:07:25,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:25,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2024-11-24 01:07:25,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:25,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2024-11-24 01:07:25,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:25,751 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2024-11-24 01:07:25,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:25,926 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:07:25,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-24 01:07:25,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-24 01:07:26,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-24 01:07:26,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-24 01:07:26,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:07:26,071 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:07:26,071 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:07:26,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232523059] [2024-11-24 01:07:26,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232523059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:26,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:07:26,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-24 01:07:26,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123252318] [2024-11-24 01:07:26,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:26,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 01:07:26,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:07:26,072 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 01:07:26,072 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-24 01:07:28,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-24 01:07:28,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 499 flow. Second operand has 13 states, 13 states have (on average 32.61538461538461) internal successors, (424), 13 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:28,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:07:28,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-24 01:07:28,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:07:29,899 INFO L124 PetriNetUnfolderBase]: 175/503 cut-off events. [2024-11-24 01:07:29,900 INFO L125 PetriNetUnfolderBase]: For 796/796 co-relation queries the response was YES. [2024-11-24 01:07:29,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 503 events. 175/503 cut-off events. For 796/796 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2650 event pairs, 25 based on Foata normal form. 7/492 useless extension candidates. Maximal degree in co-relation 1555. Up to 133 conditions per place. [2024-11-24 01:07:29,903 INFO L140 encePairwiseOnDemand]: 71/83 looper letters, 79 selfloop transitions, 31 changer transitions 0/122 dead transitions. [2024-11-24 01:07:29,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 122 transitions, 854 flow [2024-11-24 01:07:29,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-24 01:07:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-24 01:07:29,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 525 transitions. [2024-11-24 01:07:29,906 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45180722891566266 [2024-11-24 01:07:29,906 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 499 flow. Second operand 14 states and 525 transitions. [2024-11-24 01:07:29,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 122 transitions, 854 flow [2024-11-24 01:07:29,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 122 transitions, 829 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-11-24 01:07:29,912 INFO L231 Difference]: Finished difference. Result has 109 places, 84 transitions, 568 flow [2024-11-24 01:07:29,912 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=568, PETRI_PLACES=109, PETRI_TRANSITIONS=84} [2024-11-24 01:07:29,913 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 23 predicate places. [2024-11-24 01:07:29,913 INFO L471 AbstractCegarLoop]: Abstraction has has 109 places, 84 transitions, 568 flow [2024-11-24 01:07:29,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 32.61538461538461) internal successors, (424), 13 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:29,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:07:29,914 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] [2024-11-24 01:07:29,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-24 01:07:30,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:30,114 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:07:30,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:30,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1669892833, now seen corresponding path program 1 times [2024-11-24 01:07:30,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:07:30,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1815179738] [2024-11-24 01:07:30,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:30,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:30,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:30,117 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:30,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 01:07:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:30,308 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-24 01:07:30,311 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:07:30,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:07:30,365 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-24 01:07:30,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-24 01:07:30,407 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:30,472 INFO L349 Elim1Store]: treesize reduction 12, result has 42.9 percent of original size [2024-11-24 01:07:30,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2024-11-24 01:07:30,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:30,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:30,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:30,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-24 01:07:30,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-24 01:07:30,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-24 01:07:30,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-11-24 01:07:31,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-24 01:07:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:07:31,094 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:07:31,094 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:07:31,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1815179738] [2024-11-24 01:07:31,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1815179738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:31,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:07:31,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:07:31,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837143253] [2024-11-24 01:07:31,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:31,095 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:07:31,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:07:31,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:07:31,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:07:33,215 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 83 [2024-11-24 01:07:33,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 84 transitions, 568 flow. Second operand has 12 states, 12 states have (on average 32.666666666666664) internal successors, (392), 12 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:33,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:07:33,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 83 [2024-11-24 01:07:33,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:07:35,014 INFO L124 PetriNetUnfolderBase]: 165/488 cut-off events. [2024-11-24 01:07:35,015 INFO L125 PetriNetUnfolderBase]: For 1064/1064 co-relation queries the response was YES. [2024-11-24 01:07:35,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1603 conditions, 488 events. 165/488 cut-off events. For 1064/1064 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2563 event pairs, 5 based on Foata normal form. 19/505 useless extension candidates. Maximal degree in co-relation 1572. Up to 118 conditions per place. [2024-11-24 01:07:35,017 INFO L140 encePairwiseOnDemand]: 69/83 looper letters, 87 selfloop transitions, 34 changer transitions 0/133 dead transitions. [2024-11-24 01:07:35,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 133 transitions, 1036 flow [2024-11-24 01:07:35,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-24 01:07:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-24 01:07:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 664 transitions. [2024-11-24 01:07:35,020 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-11-24 01:07:35,020 INFO L175 Difference]: Start difference. First operand has 109 places, 84 transitions, 568 flow. Second operand 18 states and 664 transitions. [2024-11-24 01:07:35,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 133 transitions, 1036 flow [2024-11-24 01:07:35,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 133 transitions, 945 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-11-24 01:07:35,027 INFO L231 Difference]: Finished difference. Result has 112 places, 87 transitions, 590 flow [2024-11-24 01:07:35,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=590, PETRI_PLACES=112, PETRI_TRANSITIONS=87} [2024-11-24 01:07:35,028 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 26 predicate places. [2024-11-24 01:07:35,028 INFO L471 AbstractCegarLoop]: Abstraction has has 112 places, 87 transitions, 590 flow [2024-11-24 01:07:35,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 32.666666666666664) internal successors, (392), 12 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:35,029 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:07:35,029 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] [2024-11-24 01:07:35,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-24 01:07:35,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:35,230 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:07:35,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:35,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1669892832, now seen corresponding path program 1 times [2024-11-24 01:07:35,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:07:35,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [795405669] [2024-11-24 01:07:35,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:35,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:35,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:35,233 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:35,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 01:07:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:07:35,431 INFO L256 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-24 01:07:35,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:07:35,436 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 6 treesize of output 7 [2024-11-24 01:07:35,463 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-24 01:07:35,463 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-24 01:07:35,537 INFO L349 Elim1Store]: treesize reduction 66, result has 34.7 percent of original size [2024-11-24 01:07:35,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 34 treesize of output 48 [2024-11-24 01:07:35,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-24 01:07:35,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-11-24 01:07:35,725 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 6 treesize of output 5 [2024-11-24 01:07:35,733 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2024-11-24 01:07:35,788 INFO L349 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2024-11-24 01:07:35,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 37 [2024-11-24 01:07:35,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2024-11-24 01:07:35,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2024-11-24 01:07:36,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-24 01:07:36,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 28 [2024-11-24 01:07:36,547 INFO L349 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2024-11-24 01:07:36,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 108 treesize of output 98 [2024-11-24 01:07:36,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-24 01:07:36,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 29 [2024-11-24 01:07:36,927 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-24 01:07:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:07:36,961 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:07:36,961 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:07:36,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795405669] [2024-11-24 01:07:36,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795405669] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:07:36,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:07:36,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-24 01:07:36,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24601987] [2024-11-24 01:07:36,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:07:36,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:07:36,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:07:36,962 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:07:36,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:07:40,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 83 [2024-11-24 01:07:40,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 87 transitions, 590 flow. Second operand has 12 states, 12 states have (on average 30.666666666666668) internal successors, (368), 12 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:40,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-24 01:07:40,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 83 [2024-11-24 01:07:40,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-24 01:07:43,627 INFO L124 PetriNetUnfolderBase]: 193/516 cut-off events. [2024-11-24 01:07:43,627 INFO L125 PetriNetUnfolderBase]: For 945/945 co-relation queries the response was YES. [2024-11-24 01:07:43,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1743 conditions, 516 events. 193/516 cut-off events. For 945/945 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2596 event pairs, 5 based on Foata normal form. 23/537 useless extension candidates. Maximal degree in co-relation 1714. Up to 92 conditions per place. [2024-11-24 01:07:43,631 INFO L140 encePairwiseOnDemand]: 67/83 looper letters, 79 selfloop transitions, 51 changer transitions 13/151 dead transitions. [2024-11-24 01:07:43,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 151 transitions, 1147 flow [2024-11-24 01:07:43,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-24 01:07:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-24 01:07:43,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 730 transitions. [2024-11-24 01:07:43,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41881812966150317 [2024-11-24 01:07:43,637 INFO L175 Difference]: Start difference. First operand has 112 places, 87 transitions, 590 flow. Second operand 21 states and 730 transitions. [2024-11-24 01:07:43,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 151 transitions, 1147 flow [2024-11-24 01:07:43,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 151 transitions, 1102 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-11-24 01:07:43,643 INFO L231 Difference]: Finished difference. Result has 119 places, 87 transitions, 642 flow [2024-11-24 01:07:43,644 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=83, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=642, PETRI_PLACES=119, PETRI_TRANSITIONS=87} [2024-11-24 01:07:43,644 INFO L279 CegarLoopForPetriNet]: 86 programPoint places, 33 predicate places. [2024-11-24 01:07:43,647 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 87 transitions, 642 flow [2024-11-24 01:07:43,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 30.666666666666668) internal successors, (368), 12 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:07:43,648 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-24 01:07:43,648 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] [2024-11-24 01:07:43,661 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-24 01:07:43,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:43,849 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 51 more)] === [2024-11-24 01:07:43,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:07:43,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1089211100, now seen corresponding path program 1 times [2024-11-24 01:07:43,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:07:43,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748533060] [2024-11-24 01:07:43,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:07:43,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:43,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:07:43,852 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:07:43,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 01:07:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:07:49,452 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-24 01:07:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-24 01:07:52,157 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-24 01:07:52,157 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-24 01:07:52,158 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK (53 of 54 remaining) [2024-11-24 01:07:52,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 54 remaining) [2024-11-24 01:07:52,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 54 remaining) [2024-11-24 01:07:52,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 54 remaining) [2024-11-24 01:07:52,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 54 remaining) [2024-11-24 01:07:52,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 54 remaining) [2024-11-24 01:07:52,160 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 54 remaining) [2024-11-24 01:07:52,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 54 remaining) [2024-11-24 01:07:52,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 54 remaining) [2024-11-24 01:07:52,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 54 remaining) [2024-11-24 01:07:52,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 54 remaining) [2024-11-24 01:07:52,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 54 remaining) [2024-11-24 01:07:52,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 54 remaining) [2024-11-24 01:07:52,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 54 remaining) [2024-11-24 01:07:52,161 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 54 remaining) [2024-11-24 01:07:52,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 54 remaining) [2024-11-24 01:07:52,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 54 remaining) [2024-11-24 01:07:52,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 54 remaining) [2024-11-24 01:07:52,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 54 remaining) [2024-11-24 01:07:52,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 54 remaining) [2024-11-24 01:07:52,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 54 remaining) [2024-11-24 01:07:52,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 54 remaining) [2024-11-24 01:07:52,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 54 remaining) [2024-11-24 01:07:52,162 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 54 remaining) [2024-11-24 01:07:52,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 54 remaining) [2024-11-24 01:07:52,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 54 remaining) [2024-11-24 01:07:52,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 54 remaining) [2024-11-24 01:07:52,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 54 remaining) [2024-11-24 01:07:52,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 54 remaining) [2024-11-24 01:07:52,163 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 54 remaining) [2024-11-24 01:07:52,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 54 remaining) [2024-11-24 01:07:52,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 54 remaining) [2024-11-24 01:07:52,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 54 remaining) [2024-11-24 01:07:52,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 54 remaining) [2024-11-24 01:07:52,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 54 remaining) [2024-11-24 01:07:52,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 54 remaining) [2024-11-24 01:07:52,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 54 remaining) [2024-11-24 01:07:52,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 54 remaining) [2024-11-24 01:07:52,164 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 54 remaining) [2024-11-24 01:07:52,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 54 remaining) [2024-11-24 01:07:52,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 54 remaining) [2024-11-24 01:07:52,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 54 remaining) [2024-11-24 01:07:52,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 54 remaining) [2024-11-24 01:07:52,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 54 remaining) [2024-11-24 01:07:52,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 54 remaining) [2024-11-24 01:07:52,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 54 remaining) [2024-11-24 01:07:52,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 54 remaining) [2024-11-24 01:07:52,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 54 remaining) [2024-11-24 01:07:52,165 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 54 remaining) [2024-11-24 01:07:52,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 54 remaining) [2024-11-24 01:07:52,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 54 remaining) [2024-11-24 01:07:52,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 54 remaining) [2024-11-24 01:07:52,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 54 remaining) [2024-11-24 01:07:52,166 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 54 remaining) [2024-11-24 01:07:52,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-24 01:07:52,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:07:52,367 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:07:52,421 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-24 01:07:52,422 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-24 01:07:52,428 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 01:07:52 BasicIcfg [2024-11-24 01:07:52,428 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-24 01:07:52,430 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-24 01:07:52,430 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-24 01:07:52,430 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-24 01:07:52,432 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:06:55" (3/4) ... [2024-11-24 01:07:52,434 INFO L149 WitnessPrinter]: No result that supports witness generation found [2024-11-24 01:07:52,434 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-24 01:07:52,435 INFO L158 Benchmark]: Toolchain (without parser) took 59725.14ms. Allocated memory was 117.4MB in the beginning and 276.8MB in the end (delta: 159.4MB). Free memory was 89.9MB in the beginning and 207.6MB in the end (delta: -117.6MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2024-11-24 01:07:52,435 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:07:52,436 INFO L158 Benchmark]: CACSL2BoogieTranslator took 785.21ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 50.7MB in the end (delta: 39.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-24 01:07:52,436 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.18ms. Allocated memory is still 117.4MB. Free memory was 50.7MB in the beginning and 48.1MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:07:52,436 INFO L158 Benchmark]: Boogie Preprocessor took 88.69ms. Allocated memory is still 117.4MB. Free memory was 48.1MB in the beginning and 45.2MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:07:52,436 INFO L158 Benchmark]: RCFGBuilder took 1382.77ms. Allocated memory was 117.4MB in the beginning and 276.8MB in the end (delta: 159.4MB). Free memory was 45.2MB in the beginning and 229.9MB in the end (delta: -184.7MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. [2024-11-24 01:07:52,437 INFO L158 Benchmark]: TraceAbstraction took 57378.20ms. Allocated memory is still 276.8MB. Free memory was 229.9MB in the beginning and 207.6MB in the end (delta: 22.3MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2024-11-24 01:07:52,437 INFO L158 Benchmark]: Witness Printer took 4.81ms. Allocated memory is still 276.8MB. Free memory was 207.6MB in the beginning and 207.6MB in the end (delta: 53.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:07:52,439 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 117.4MB. Free memory is still 84.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 785.21ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 50.7MB in the end (delta: 39.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.18ms. Allocated memory is still 117.4MB. Free memory was 50.7MB in the beginning and 48.1MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 88.69ms. Allocated memory is still 117.4MB. Free memory was 48.1MB in the beginning and 45.2MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1382.77ms. Allocated memory was 117.4MB in the beginning and 276.8MB in the end (delta: 159.4MB). Free memory was 45.2MB in the beginning and 229.9MB in the end (delta: -184.7MB). Peak memory consumption was 26.6MB. Max. memory is 16.1GB. * TraceAbstraction took 57378.20ms. Allocated memory is still 276.8MB. Free memory was 229.9MB in the beginning and 207.6MB in the end (delta: 22.3MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * Witness Printer took 4.81ms. Allocated memory is still 276.8MB. Free memory was 207.6MB in the beginning and 207.6MB in the end (delta: 53.9kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1242]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1242. Possible FailurePath: [L1223-L1226] 0 struct s { int datum; struct s *next; } *A, *B; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1243] 0 pthread_t t1; [L1244] 0 struct s *p = malloc(sizeof(struct s)); [L1245] CALL 0 init(p,9) [L1228] 0 p -> datum = x VAL [A={0:0}, A_mutex={1:0}, B={0:0}, B_mutex={2:0}] [L1229] 0 p -> next = ((void *)0) [L1245] RET 0 init(p,9) [L1246] 0 A = malloc(sizeof(struct s)) [L1247] CALL 0 init(A,3) [L1228] 0 p -> datum = x VAL [A={-687865857:0}, A_mutex={1:0}, B={0:0}, B_mutex={2:0}] [L1229] 0 p -> next = ((void *)0) [L1247] RET 0 init(A,3) [L1248] 0 A->next = p [L1249] 0 B = malloc(sizeof(struct s)) [L1250] CALL 0 init(B,5) [L1228] 0 p -> datum = x VAL [A={-687865857:0}, A_mutex={1:0}, B={134217728:0}, B_mutex={2:0}] [L1229] 0 p -> next = ((void *)0) [L1250] RET 0 init(B,5) [L1251] 0 p = malloc(sizeof(struct s)) [L1252] CALL 0 init(p,9) [L1228] 0 p -> datum = x VAL [A={-687865857:0}, A_mutex={1:0}, B={134217728:0}, B_mutex={2:0}] [L1229] 0 p -> next = ((void *)0) [L1252] RET 0 init(p,9) [L1253] 0 B->next = p [L1254] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={-687865857:0}, A_mutex={1:0}, B={134217728:0}, B_mutex={2:0}, \old(arg)={0:0}, p={262144:0}, t1=0] [L1256] EXPR 0 A->next [L1256] 0 p = A->next [L1257] 0 p->datum [L1260] EXPR 0 B->next [L1260] 0 p = B->next [L1261] 0 p->datum [L1263] 0 return 0; VAL [A={-687865857:0}, A_mutex={1:0}, B={134217728:0}, B_mutex={2:0}, \old(arg)={0:0}, \result=0, p={262144:0}, t1=0] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1254]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 113 locations, 54 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 57.1s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 33.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4330 SdHoareTripleChecker+Valid, 26.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3378 mSDsluCounter, 2036 SdHoareTripleChecker+Invalid, 23.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1689 mSDsCounter, 267 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10765 IncrementalHoareTripleChecker+Invalid, 11032 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 267 mSolverCounterUnsat, 347 mSDtfsCounter, 10765 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 310 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 147 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=642occurred in iteration=16, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 6.3s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 280 NumberOfCodeBlocks, 280 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 238 ConstructedInterpolants, 28 QuantifiedInterpolants, 6008 SizeOfPredicates, 102 NumberOfNonLiveVariables, 3283 ConjunctsInSsa, 290 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2024-11-24 01:07:52,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2297515c-9824-49e1-b8ed-38f50e619066/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample