./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_11-arraylist_nr-deref.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_11-arraylist_nr-deref.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB --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 c488feb98493d291286969cd9fdbd15fc14c729caece3fe94bd3c70430190936 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:21:39,482 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:21:39,589 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 05:21:39,596 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:21:39,600 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:21:39,632 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:21:39,634 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:21:39,635 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:21:39,635 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:21:39,636 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:21:39,637 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:21:39,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:21:39,637 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:21:39,638 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:21:39,638 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:21:39,638 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:21:39,638 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:21:39,639 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:21:39,639 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:21:39,639 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:21:39,639 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:21:39,639 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:21:39,639 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:21:39,639 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:21:39,640 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:21:39,640 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:21:39,640 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:21:39,640 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:21:39,640 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:21:39,640 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:21:39,640 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:21:39,641 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:21:39,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:21:39,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:21:39,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:21:39,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:21:39,642 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:21:39,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:21:39,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:21:39,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:21:39,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:21:39,643 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:21:39,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:21:39,643 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:21:39,643 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:21:39,643 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:21:39,643 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:21:39,643 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_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB 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 -> c488feb98493d291286969cd9fdbd15fc14c729caece3fe94bd3c70430190936 [2024-11-28 05:21:39,965 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:21:39,974 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:21:39,977 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:21:39,980 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:21:39,981 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:21:39,983 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/goblint-regression/09-regions_11-arraylist_nr-deref.i [2024-11-28 05:21:42,940 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/data/5cf803926/9b64ba247c3c4b759b7a5f028fc29daa/FLAG92d0cb878 [2024-11-28 05:21:43,325 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:21:43,326 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/sv-benchmarks/c/goblint-regression/09-regions_11-arraylist_nr-deref.i [2024-11-28 05:21:43,345 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/data/5cf803926/9b64ba247c3c4b759b7a5f028fc29daa/FLAG92d0cb878 [2024-11-28 05:21:43,497 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/data/5cf803926/9b64ba247c3c4b759b7a5f028fc29daa [2024-11-28 05:21:43,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:21:43,501 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:21:43,502 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:21:43,502 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:21:43,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:21:43,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:21:43" (1/1) ... [2024-11-28 05:21:43,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4aa449c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:43, skipping insertion in model container [2024-11-28 05:21:43,509 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:21:43" (1/1) ... [2024-11-28 05:21:43,567 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:21:44,130 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:21:44,168 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:21:44,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:21:44,321 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:21:44,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44 WrapperNode [2024-11-28 05:21:44,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:21:44,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:21:44,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:21:44,324 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:21:44,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44" (1/1) ... [2024-11-28 05:21:44,351 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44" (1/1) ... [2024-11-28 05:21:44,378 INFO L138 Inliner]: procedures = 372, calls = 88, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 178 [2024-11-28 05:21:44,378 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:21:44,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:21:44,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:21:44,379 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:21:44,389 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44" (1/1) ... [2024-11-28 05:21:44,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44" (1/1) ... [2024-11-28 05:21:44,393 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44" (1/1) ... [2024-11-28 05:21:44,414 INFO L175 MemorySlicer]: Split 78 memory accesses to 3 slices as follows [50, 14, 14]. 64 percent of accesses are in the largest equivalence class. The 60 initializations are split as follows [50, 10, 0]. The 11 writes are split as follows [0, 1, 10]. [2024-11-28 05:21:44,414 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44" (1/1) ... [2024-11-28 05:21:44,414 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44" (1/1) ... [2024-11-28 05:21:44,436 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44" (1/1) ... [2024-11-28 05:21:44,441 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44" (1/1) ... [2024-11-28 05:21:44,448 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44" (1/1) ... [2024-11-28 05:21:44,450 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44" (1/1) ... [2024-11-28 05:21:44,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44" (1/1) ... [2024-11-28 05:21:44,459 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:21:44,463 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:21:44,463 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:21:44,464 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:21:44,465 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44" (1/1) ... [2024-11-28 05:21:44,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:21:44,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:44,497 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:21:44,499 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:21:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 05:21:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 05:21:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 05:21:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 05:21:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 05:21:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 05:21:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-28 05:21:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:21:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:21:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 05:21:44,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:21:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:21:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 05:21:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-28 05:21:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:21:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:21:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 05:21:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 05:21:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 05:21:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-28 05:21:44,527 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-28 05:21:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:21:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:21:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 05:21:44,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:21:44,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:21:44,530 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:21:44,759 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:21:44,760 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:21:45,313 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:21:45,313 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:21:45,767 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:21:45,767 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 05:21:45,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:21:45 BoogieIcfgContainer [2024-11-28 05:21:45,768 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:21:45,770 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:21:45,770 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:21:45,775 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:21:45,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:21:43" (1/3) ... [2024-11-28 05:21:45,776 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2c211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:21:45, skipping insertion in model container [2024-11-28 05:21:45,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:21:44" (2/3) ... [2024-11-28 05:21:45,777 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2c211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:21:45, skipping insertion in model container [2024-11-28 05:21:45,777 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:21:45" (3/3) ... [2024-11-28 05:21:45,778 INFO L128 eAbstractionObserver]: Analyzing ICFG 09-regions_11-arraylist_nr-deref.i [2024-11-28 05:21:45,794 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:21:45,796 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09-regions_11-arraylist_nr-deref.i that has 2 procedures, 71 locations, 1 initial locations, 1 loop locations, and 37 error locations. [2024-11-28 05:21:45,796 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:21:45,865 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-28 05:21:45,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 74 places, 71 transitions, 146 flow [2024-11-28 05:21:45,953 INFO L124 PetriNetUnfolderBase]: 1/70 cut-off events. [2024-11-28 05:21:45,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:21:45,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74 conditions, 70 events. 1/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 163 event pairs, 0 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2024-11-28 05:21:45,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 74 places, 71 transitions, 146 flow [2024-11-28 05:21:45,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 70 transitions, 143 flow [2024-11-28 05:21:45,970 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:21:45,989 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;@36a3393b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:21:45,989 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-28 05:21:45,996 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:21:45,996 INFO L124 PetriNetUnfolderBase]: 1/4 cut-off events. [2024-11-28 05:21:45,996 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:21:45,997 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:45,997 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-28 05:21:45,998 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:46,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:46,004 INFO L85 PathProgramCache]: Analyzing trace with hash 497699, now seen corresponding path program 1 times [2024-11-28 05:21:46,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:46,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767131872] [2024-11-28 05:21:46,013 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:46,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:46,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:46,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767131872] [2024-11-28 05:21:46,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767131872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:46,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:46,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:21:46,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313824451] [2024-11-28 05:21:46,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:46,438 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:46,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:46,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:46,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:46,465 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 71 [2024-11-28 05:21:46,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 143 flow. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:46,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:46,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 71 [2024-11-28 05:21:46,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:46,667 INFO L124 PetriNetUnfolderBase]: 64/267 cut-off events. [2024-11-28 05:21:46,667 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:21:46,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 425 conditions, 267 events. 64/267 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1236 event pairs, 63 based on Foata normal form. 0/205 useless extension candidates. Maximal degree in co-relation 377. Up to 153 conditions per place. [2024-11-28 05:21:46,676 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 25 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-11-28 05:21:46,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 71 transitions, 199 flow [2024-11-28 05:21:46,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:46,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:21:46,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 163 transitions. [2024-11-28 05:21:46,690 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7652582159624414 [2024-11-28 05:21:46,692 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 143 flow. Second operand 3 states and 163 transitions. [2024-11-28 05:21:46,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 71 transitions, 199 flow [2024-11-28 05:21:46,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:21:46,709 INFO L231 Difference]: Finished difference. Result has 75 places, 71 transitions, 154 flow [2024-11-28 05:21:46,713 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=75, PETRI_TRANSITIONS=71} [2024-11-28 05:21:46,718 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 2 predicate places. [2024-11-28 05:21:46,720 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 71 transitions, 154 flow [2024-11-28 05:21:46,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:46,720 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:46,721 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-28 05:21:46,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:21:46,721 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:46,722 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash 15426834, now seen corresponding path program 1 times [2024-11-28 05:21:46,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:46,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607005024] [2024-11-28 05:21:46,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:46,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:46,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:46,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:46,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:46,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607005024] [2024-11-28 05:21:46,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607005024] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:46,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796740741] [2024-11-28 05:21:46,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:46,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:46,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:46,928 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:21:46,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:21:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:47,090 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:21:47,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:21:47,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:47,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:21:47,156 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:47,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796740741] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:21:47,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:21:47,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-28 05:21:47,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666163776] [2024-11-28 05:21:47,157 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:21:47,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:21:47,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:47,159 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:21:47,159 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:21:47,160 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 71 [2024-11-28 05:21:47,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 71 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 46.142857142857146) internal successors, (323), 7 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:47,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:47,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 71 [2024-11-28 05:21:47,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:47,355 INFO L124 PetriNetUnfolderBase]: 64/270 cut-off events. [2024-11-28 05:21:47,356 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-28 05:21:47,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 270 events. 64/270 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1236 event pairs, 63 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 429. Up to 153 conditions per place. [2024-11-28 05:21:47,362 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 25 selfloop transitions, 5 changer transitions 0/74 dead transitions. [2024-11-28 05:21:47,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 226 flow [2024-11-28 05:21:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:21:47,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:21:47,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 303 transitions. [2024-11-28 05:21:47,368 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7112676056338029 [2024-11-28 05:21:47,370 INFO L175 Difference]: Start difference. First operand has 75 places, 71 transitions, 154 flow. Second operand 6 states and 303 transitions. [2024-11-28 05:21:47,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 226 flow [2024-11-28 05:21:47,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 74 transitions, 222 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 05:21:47,373 INFO L231 Difference]: Finished difference. Result has 82 places, 74 transitions, 186 flow [2024-11-28 05:21:47,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=186, PETRI_PLACES=82, PETRI_TRANSITIONS=74} [2024-11-28 05:21:47,374 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 9 predicate places. [2024-11-28 05:21:47,375 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 74 transitions, 186 flow [2024-11-28 05:21:47,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 46.142857142857146) internal successors, (323), 7 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:47,376 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:47,376 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2024-11-28 05:21:47,386 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:21:47,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:47,577 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:47,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:47,577 INFO L85 PathProgramCache]: Analyzing trace with hash 17488867, now seen corresponding path program 2 times [2024-11-28 05:21:47,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:47,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725412175] [2024-11-28 05:21:47,577 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:21:47,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:47,614 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:21:47,614 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:21:47,731 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-28 05:21:47,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:47,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725412175] [2024-11-28 05:21:47,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725412175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:47,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:47,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:21:47,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339306565] [2024-11-28 05:21:47,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:47,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:47,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:47,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:47,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:47,823 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 71 [2024-11-28 05:21:47,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 74 transitions, 186 flow. Second operand has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:47,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:47,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 71 [2024-11-28 05:21:47,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:47,978 INFO L124 PetriNetUnfolderBase]: 64/266 cut-off events. [2024-11-28 05:21:47,978 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-28 05:21:47,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 266 events. 64/266 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1209 event pairs, 63 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 418. Up to 155 conditions per place. [2024-11-28 05:21:47,980 INFO L140 encePairwiseOnDemand]: 63/71 looper letters, 28 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2024-11-28 05:21:47,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 70 transitions, 242 flow [2024-11-28 05:21:47,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:47,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:21:47,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 149 transitions. [2024-11-28 05:21:47,983 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6995305164319249 [2024-11-28 05:21:47,983 INFO L175 Difference]: Start difference. First operand has 82 places, 74 transitions, 186 flow. Second operand 3 states and 149 transitions. [2024-11-28 05:21:47,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 70 transitions, 242 flow [2024-11-28 05:21:47,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 70 transitions, 228 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-11-28 05:21:47,986 INFO L231 Difference]: Finished difference. Result has 79 places, 70 transitions, 172 flow [2024-11-28 05:21:47,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=172, PETRI_PLACES=79, PETRI_TRANSITIONS=70} [2024-11-28 05:21:47,987 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2024-11-28 05:21:47,987 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 70 transitions, 172 flow [2024-11-28 05:21:47,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:47,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:47,988 INFO L206 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2024-11-28 05:21:47,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:21:47,988 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:47,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:47,989 INFO L85 PathProgramCache]: Analyzing trace with hash 17488868, now seen corresponding path program 1 times [2024-11-28 05:21:47,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:47,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994353136] [2024-11-28 05:21:47,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:47,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:48,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:48,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:48,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:48,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994353136] [2024-11-28 05:21:48,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994353136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:48,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584537031] [2024-11-28 05:21:48,176 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:48,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:48,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:48,181 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:21:48,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:21:48,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:48,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:21:48,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:21:48,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:48,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:21:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:21:48,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584537031] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:21:48,425 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:21:48,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-28 05:21:48,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90653568] [2024-11-28 05:21:48,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:21:48,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:21:48,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:48,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:21:48,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:21:48,429 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 71 [2024-11-28 05:21:48,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 70 transitions, 172 flow. Second operand has 13 states, 13 states have (on average 46.07692307692308) internal successors, (599), 13 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:48,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:48,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 71 [2024-11-28 05:21:48,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:48,670 INFO L124 PetriNetUnfolderBase]: 64/272 cut-off events. [2024-11-28 05:21:48,670 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-11-28 05:21:48,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 272 events. 64/272 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1212 event pairs, 63 based on Foata normal form. 6/221 useless extension candidates. Maximal degree in co-relation 420. Up to 153 conditions per place. [2024-11-28 05:21:48,673 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 25 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2024-11-28 05:21:48,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 76 transitions, 280 flow [2024-11-28 05:21:48,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 05:21:48,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-28 05:21:48,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 582 transitions. [2024-11-28 05:21:48,675 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6830985915492958 [2024-11-28 05:21:48,676 INFO L175 Difference]: Start difference. First operand has 79 places, 70 transitions, 172 flow. Second operand 12 states and 582 transitions. [2024-11-28 05:21:48,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 76 transitions, 280 flow [2024-11-28 05:21:48,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 76 transitions, 272 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:21:48,679 INFO L231 Difference]: Finished difference. Result has 94 places, 76 transitions, 248 flow [2024-11-28 05:21:48,679 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=248, PETRI_PLACES=94, PETRI_TRANSITIONS=76} [2024-11-28 05:21:48,680 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 21 predicate places. [2024-11-28 05:21:48,680 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 76 transitions, 248 flow [2024-11-28 05:21:48,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 46.07692307692308) internal successors, (599), 13 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:48,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:48,681 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1] [2024-11-28 05:21:48,690 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:21:48,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:48,881 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:48,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:48,882 INFO L85 PathProgramCache]: Analyzing trace with hash -894173820, now seen corresponding path program 2 times [2024-11-28 05:21:48,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:48,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325919308] [2024-11-28 05:21:48,882 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:21:48,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:48,909 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 05:21:48,909 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:21:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:21:49,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:49,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325919308] [2024-11-28 05:21:49,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325919308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:49,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:49,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:21:49,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926340457] [2024-11-28 05:21:49,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:49,025 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:49,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:49,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:49,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:49,116 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 71 [2024-11-28 05:21:49,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 76 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:49,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:49,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 71 [2024-11-28 05:21:49,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:49,265 INFO L124 PetriNetUnfolderBase]: 64/268 cut-off events. [2024-11-28 05:21:49,265 INFO L125 PetriNetUnfolderBase]: For 31/31 co-relation queries the response was YES. [2024-11-28 05:21:49,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 268 events. 64/268 cut-off events. For 31/31 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1195 event pairs, 63 based on Foata normal form. 2/215 useless extension candidates. Maximal degree in co-relation 418. Up to 161 conditions per place. [2024-11-28 05:21:49,268 INFO L140 encePairwiseOnDemand]: 63/71 looper letters, 32 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2024-11-28 05:21:49,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 72 transitions, 312 flow [2024-11-28 05:21:49,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:49,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:21:49,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2024-11-28 05:21:49,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7183098591549296 [2024-11-28 05:21:49,271 INFO L175 Difference]: Start difference. First operand has 94 places, 76 transitions, 248 flow. Second operand 3 states and 153 transitions. [2024-11-28 05:21:49,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 72 transitions, 312 flow [2024-11-28 05:21:49,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 72 transitions, 264 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-11-28 05:21:49,278 INFO L231 Difference]: Finished difference. Result has 87 places, 72 transitions, 200 flow [2024-11-28 05:21:49,278 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=87, PETRI_TRANSITIONS=72} [2024-11-28 05:21:49,279 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 14 predicate places. [2024-11-28 05:21:49,279 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 72 transitions, 200 flow [2024-11-28 05:21:49,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:49,280 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:49,280 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2024-11-28 05:21:49,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 05:21:49,281 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:49,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:49,282 INFO L85 PathProgramCache]: Analyzing trace with hash -307568252, now seen corresponding path program 1 times [2024-11-28 05:21:49,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:49,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263347734] [2024-11-28 05:21:49,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:49,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:49,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:49,604 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:21:49,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:49,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263347734] [2024-11-28 05:21:49,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263347734] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:49,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:49,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:21:49,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446029821] [2024-11-28 05:21:49,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:49,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:21:49,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:49,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:21:49,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:21:49,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 71 [2024-11-28 05:21:49,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 72 transitions, 200 flow. Second operand has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:49,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:49,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 71 [2024-11-28 05:21:49,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:50,048 INFO L124 PetriNetUnfolderBase]: 73/286 cut-off events. [2024-11-28 05:21:50,048 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2024-11-28 05:21:50,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 286 events. 73/286 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1288 event pairs, 72 based on Foata normal form. 1/238 useless extension candidates. Maximal degree in co-relation 461. Up to 183 conditions per place. [2024-11-28 05:21:50,051 INFO L140 encePairwiseOnDemand]: 66/71 looper letters, 38 selfloop transitions, 1 changer transitions 0/68 dead transitions. [2024-11-28 05:21:50,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 68 transitions, 270 flow [2024-11-28 05:21:50,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:50,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:21:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2024-11-28 05:21:50,053 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6901408450704225 [2024-11-28 05:21:50,053 INFO L175 Difference]: Start difference. First operand has 87 places, 72 transitions, 200 flow. Second operand 3 states and 147 transitions. [2024-11-28 05:21:50,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 68 transitions, 270 flow [2024-11-28 05:21:50,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 68 transitions, 262 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:21:50,059 INFO L231 Difference]: Finished difference. Result has 83 places, 68 transitions, 186 flow [2024-11-28 05:21:50,060 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=186, PETRI_PLACES=83, PETRI_TRANSITIONS=68} [2024-11-28 05:21:50,060 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 10 predicate places. [2024-11-28 05:21:50,060 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 68 transitions, 186 flow [2024-11-28 05:21:50,061 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.0) internal successors, (234), 6 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:50,061 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:50,061 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1] [2024-11-28 05:21:50,061 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 05:21:50,061 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:50,062 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:50,062 INFO L85 PathProgramCache]: Analyzing trace with hash -307568251, now seen corresponding path program 1 times [2024-11-28 05:21:50,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:50,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707909372] [2024-11-28 05:21:50,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:50,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:21:50,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:50,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707909372] [2024-11-28 05:21:50,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707909372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:50,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:50,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:21:50,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610393556] [2024-11-28 05:21:50,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:50,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:21:50,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:50,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:21:50,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:21:50,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 71 [2024-11-28 05:21:50,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 68 transitions, 186 flow. Second operand has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:50,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:50,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 71 [2024-11-28 05:21:50,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:50,982 INFO L124 PetriNetUnfolderBase]: 73/281 cut-off events. [2024-11-28 05:21:50,982 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2024-11-28 05:21:50,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 281 events. 73/281 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1258 event pairs, 63 based on Foata normal form. 0/232 useless extension candidates. Maximal degree in co-relation 484. Up to 148 conditions per place. [2024-11-28 05:21:50,985 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 37 selfloop transitions, 6 changer transitions 3/74 dead transitions. [2024-11-28 05:21:50,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 74 transitions, 290 flow [2024-11-28 05:21:50,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:21:50,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:21:50,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 224 transitions. [2024-11-28 05:21:50,986 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6309859154929578 [2024-11-28 05:21:50,987 INFO L175 Difference]: Start difference. First operand has 83 places, 68 transitions, 186 flow. Second operand 5 states and 224 transitions. [2024-11-28 05:21:50,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 74 transitions, 290 flow [2024-11-28 05:21:50,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 74 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:21:50,990 INFO L231 Difference]: Finished difference. Result has 83 places, 65 transitions, 191 flow [2024-11-28 05:21:50,990 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=83, PETRI_TRANSITIONS=65} [2024-11-28 05:21:50,991 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 10 predicate places. [2024-11-28 05:21:50,991 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 65 transitions, 191 flow [2024-11-28 05:21:50,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 38.0) internal successors, (190), 5 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:50,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:50,991 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:50,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 05:21:50,992 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:50,992 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:50,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1938666983, now seen corresponding path program 1 times [2024-11-28 05:21:50,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:50,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522443180] [2024-11-28 05:21:50,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:50,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:51,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:51,393 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:21:51,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:51,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522443180] [2024-11-28 05:21:51,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522443180] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:51,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:51,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:21:51,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377242530] [2024-11-28 05:21:51,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:51,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:21:51,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:51,395 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:21:51,395 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:21:51,755 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 71 [2024-11-28 05:21:51,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 65 transitions, 191 flow. Second operand has 7 states, 7 states have (on average 37.42857142857143) internal successors, (262), 7 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:51,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:51,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 71 [2024-11-28 05:21:51,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:52,019 INFO L124 PetriNetUnfolderBase]: 64/252 cut-off events. [2024-11-28 05:21:52,019 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-11-28 05:21:52,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 252 events. 64/252 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1107 event pairs, 54 based on Foata normal form. 0/212 useless extension candidates. Maximal degree in co-relation 453. Up to 126 conditions per place. [2024-11-28 05:21:52,022 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 38 selfloop transitions, 7 changer transitions 3/72 dead transitions. [2024-11-28 05:21:52,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 72 transitions, 301 flow [2024-11-28 05:21:52,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:21:52,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:21:52,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 292 transitions. [2024-11-28 05:21:52,023 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5875251509054326 [2024-11-28 05:21:52,024 INFO L175 Difference]: Start difference. First operand has 83 places, 65 transitions, 191 flow. Second operand 7 states and 292 transitions. [2024-11-28 05:21:52,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 72 transitions, 301 flow [2024-11-28 05:21:52,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 72 transitions, 289 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 05:21:52,026 INFO L231 Difference]: Finished difference. Result has 83 places, 63 transitions, 189 flow [2024-11-28 05:21:52,028 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=189, PETRI_PLACES=83, PETRI_TRANSITIONS=63} [2024-11-28 05:21:52,030 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 10 predicate places. [2024-11-28 05:21:52,031 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 63 transitions, 189 flow [2024-11-28 05:21:52,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.42857142857143) internal successors, (262), 7 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:52,032 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:52,032 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:52,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 05:21:52,032 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:52,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:52,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1938666984, now seen corresponding path program 1 times [2024-11-28 05:21:52,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:52,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55582016] [2024-11-28 05:21:52,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:52,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:52,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:52,651 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:21:52,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:52,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55582016] [2024-11-28 05:21:52,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55582016] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:52,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:52,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:21:52,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66660207] [2024-11-28 05:21:52,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:52,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:21:52,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:52,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:21:52,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:21:53,174 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 71 [2024-11-28 05:21:53,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 63 transitions, 189 flow. Second operand has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:53,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:53,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 71 [2024-11-28 05:21:53,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:53,424 INFO L124 PetriNetUnfolderBase]: 64/250 cut-off events. [2024-11-28 05:21:53,425 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-11-28 05:21:53,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 470 conditions, 250 events. 64/250 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1103 event pairs, 54 based on Foata normal form. 1/211 useless extension candidates. Maximal degree in co-relation 452. Up to 126 conditions per place. [2024-11-28 05:21:53,427 INFO L140 encePairwiseOnDemand]: 62/71 looper letters, 37 selfloop transitions, 7 changer transitions 3/70 dead transitions. [2024-11-28 05:21:53,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 70 transitions, 297 flow [2024-11-28 05:21:53,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:21:53,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:21:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 270 transitions. [2024-11-28 05:21:53,430 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5432595573440644 [2024-11-28 05:21:53,430 INFO L175 Difference]: Start difference. First operand has 83 places, 63 transitions, 189 flow. Second operand 7 states and 270 transitions. [2024-11-28 05:21:53,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 70 transitions, 297 flow [2024-11-28 05:21:53,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 70 transitions, 283 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 05:21:53,434 INFO L231 Difference]: Finished difference. Result has 81 places, 61 transitions, 185 flow [2024-11-28 05:21:53,434 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=185, PETRI_PLACES=81, PETRI_TRANSITIONS=61} [2024-11-28 05:21:53,435 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 8 predicate places. [2024-11-28 05:21:53,435 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 61 transitions, 185 flow [2024-11-28 05:21:53,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.42857142857143) internal successors, (241), 7 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:53,436 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:53,436 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:53,436 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 05:21:53,436 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:53,437 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:53,437 INFO L85 PathProgramCache]: Analyzing trace with hash -956817694, now seen corresponding path program 1 times [2024-11-28 05:21:53,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:53,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817047121] [2024-11-28 05:21:53,437 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:53,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:53,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:53,626 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:21:53,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:53,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817047121] [2024-11-28 05:21:53,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817047121] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:53,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:53,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:21:53,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47071014] [2024-11-28 05:21:53,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:53,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:21:53,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:53,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:21:53,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:21:53,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 71 [2024-11-28 05:21:53,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 61 transitions, 185 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) [2024-11-28 05:21:53,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:53,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 71 [2024-11-28 05:21:53,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:53,923 INFO L124 PetriNetUnfolderBase]: 64/249 cut-off events. [2024-11-28 05:21:53,924 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-11-28 05:21:53,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 469 conditions, 249 events. 64/249 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1076 event pairs, 63 based on Foata normal form. 1/211 useless extension candidates. Maximal degree in co-relation 451. Up to 158 conditions per place. [2024-11-28 05:21:53,925 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 32 selfloop transitions, 6 changer transitions 0/60 dead transitions. [2024-11-28 05:21:53,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 60 transitions, 259 flow [2024-11-28 05:21:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:21:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:21:53,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 219 transitions. [2024-11-28 05:21:53,927 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6169014084507042 [2024-11-28 05:21:53,928 INFO L175 Difference]: Start difference. First operand has 81 places, 61 transitions, 185 flow. Second operand 5 states and 219 transitions. [2024-11-28 05:21:53,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 60 transitions, 259 flow [2024-11-28 05:21:53,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 60 transitions, 245 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 05:21:53,930 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 181 flow [2024-11-28 05:21:53,931 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=181, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2024-11-28 05:21:53,931 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 5 predicate places. [2024-11-28 05:21:53,931 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 181 flow [2024-11-28 05:21:53,932 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) [2024-11-28 05:21:53,932 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:53,932 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:53,932 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:21:53,932 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:53,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:53,933 INFO L85 PathProgramCache]: Analyzing trace with hash -956817693, now seen corresponding path program 1 times [2024-11-28 05:21:53,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:53,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244153390] [2024-11-28 05:21:53,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:53,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 05:21:54,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:54,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244153390] [2024-11-28 05:21:54,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244153390] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:54,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:54,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:21:54,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893258313] [2024-11-28 05:21:54,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:54,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:21:54,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:54,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:21:54,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:21:54,423 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 71 [2024-11-28 05:21:54,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:54,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:54,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 71 [2024-11-28 05:21:54,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:54,585 INFO L124 PetriNetUnfolderBase]: 64/248 cut-off events. [2024-11-28 05:21:54,586 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-11-28 05:21:54,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456 conditions, 248 events. 64/248 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1091 event pairs, 63 based on Foata normal form. 1/210 useless extension candidates. Maximal degree in co-relation 438. Up to 158 conditions per place. [2024-11-28 05:21:54,587 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 30 selfloop transitions, 6 changer transitions 0/59 dead transitions. [2024-11-28 05:21:54,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 59 transitions, 251 flow [2024-11-28 05:21:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:21:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:21:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 227 transitions. [2024-11-28 05:21:54,589 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6394366197183099 [2024-11-28 05:21:54,589 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 181 flow. Second operand 5 states and 227 transitions. [2024-11-28 05:21:54,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 59 transitions, 251 flow [2024-11-28 05:21:54,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 59 transitions, 239 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 05:21:54,591 INFO L231 Difference]: Finished difference. Result has 77 places, 59 transitions, 179 flow [2024-11-28 05:21:54,591 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=77, PETRI_TRANSITIONS=59} [2024-11-28 05:21:54,593 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 4 predicate places. [2024-11-28 05:21:54,593 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 59 transitions, 179 flow [2024-11-28 05:21:54,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 41.8) internal successors, (209), 5 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:54,594 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:54,594 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:54,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 05:21:54,595 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:54,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1449392445, now seen corresponding path program 1 times [2024-11-28 05:21:54,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:54,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192093821] [2024-11-28 05:21:54,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:54,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 05:21:54,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:54,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192093821] [2024-11-28 05:21:54,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192093821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:54,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:54,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:21:54,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659726452] [2024-11-28 05:21:54,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:54,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:54,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:54,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:54,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:54,768 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 71 [2024-11-28 05:21:54,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 59 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:54,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:54,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 71 [2024-11-28 05:21:54,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:54,886 INFO L124 PetriNetUnfolderBase]: 71/258 cut-off events. [2024-11-28 05:21:54,886 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-11-28 05:21:54,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 258 events. 71/258 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1124 event pairs, 56 based on Foata normal form. 0/231 useless extension candidates. Maximal degree in co-relation 463. Up to 148 conditions per place. [2024-11-28 05:21:54,888 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 42 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2024-11-28 05:21:54,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 64 transitions, 277 flow [2024-11-28 05:21:54,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:54,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:21:54,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-11-28 05:21:54,889 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7605633802816901 [2024-11-28 05:21:54,891 INFO L175 Difference]: Start difference. First operand has 77 places, 59 transitions, 179 flow. Second operand 3 states and 162 transitions. [2024-11-28 05:21:54,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 64 transitions, 277 flow [2024-11-28 05:21:54,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 64 transitions, 265 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-28 05:21:54,894 INFO L231 Difference]: Finished difference. Result has 73 places, 57 transitions, 167 flow [2024-11-28 05:21:54,894 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=71, 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=3, PETRI_FLOW=167, PETRI_PLACES=73, PETRI_TRANSITIONS=57} [2024-11-28 05:21:54,897 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 0 predicate places. [2024-11-28 05:21:54,897 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 57 transitions, 167 flow [2024-11-28 05:21:54,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:54,897 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:54,897 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:54,897 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 05:21:54,897 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:54,898 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:54,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1449392444, now seen corresponding path program 1 times [2024-11-28 05:21:54,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:54,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554255362] [2024-11-28 05:21:54,900 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:54,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:54,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:55,107 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-28 05:21:55,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:55,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554255362] [2024-11-28 05:21:55,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554255362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:55,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:55,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:21:55,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17670861] [2024-11-28 05:21:55,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:55,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:21:55,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:55,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:21:55,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:21:55,176 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 71 [2024-11-28 05:21:55,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 57 transitions, 167 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) [2024-11-28 05:21:55,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:55,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 71 [2024-11-28 05:21:55,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:55,300 INFO L124 PetriNetUnfolderBase]: 64/235 cut-off events. [2024-11-28 05:21:55,300 INFO L125 PetriNetUnfolderBase]: For 60/60 co-relation queries the response was YES. [2024-11-28 05:21:55,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 453 conditions, 235 events. 64/235 cut-off events. For 60/60 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 966 event pairs, 56 based on Foata normal form. 16/225 useless extension candidates. Maximal degree in co-relation 435. Up to 148 conditions per place. [2024-11-28 05:21:55,303 INFO L140 encePairwiseOnDemand]: 67/71 looper letters, 41 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2024-11-28 05:21:55,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 263 flow [2024-11-28 05:21:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:21:55,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:21:55,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 164 transitions. [2024-11-28 05:21:55,305 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7699530516431925 [2024-11-28 05:21:55,305 INFO L175 Difference]: Start difference. First operand has 73 places, 57 transitions, 167 flow. Second operand 3 states and 164 transitions. [2024-11-28 05:21:55,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 263 flow [2024-11-28 05:21:55,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 62 transitions, 259 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:21:55,309 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 163 flow [2024-11-28 05:21:55,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=163, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2024-11-28 05:21:55,310 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -2 predicate places. [2024-11-28 05:21:55,310 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 163 flow [2024-11-28 05:21:55,310 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) [2024-11-28 05:21:55,310 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:55,310 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:55,310 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 05:21:55,310 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:55,311 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:55,311 INFO L85 PathProgramCache]: Analyzing trace with hash -2013375505, now seen corresponding path program 1 times [2024-11-28 05:21:55,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:55,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730978942] [2024-11-28 05:21:55,312 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:55,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:55,761 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:21:55,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:55,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730978942] [2024-11-28 05:21:55,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730978942] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:55,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183658108] [2024-11-28 05:21:55,762 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:55,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:55,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:55,764 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:21:55,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:21:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:55,976 INFO L256 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 05:21:55,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:21:56,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 05:21:56,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 05:21:56,188 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 35 treesize of output 19 [2024-11-28 05:21:56,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 14 [2024-11-28 05:21:56,200 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:21:56,201 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:21:56,317 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:21:56,318 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 45 treesize of output 49 [2024-11-28 05:21:56,447 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:21:56,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183658108] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:21:56,447 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:21:56,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2024-11-28 05:21:56,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118907424] [2024-11-28 05:21:56,447 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:21:56,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 05:21:56,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:56,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 05:21:56,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2024-11-28 05:21:57,605 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 38 out of 71 [2024-11-28 05:21:57,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 163 flow. Second operand has 19 states, 19 states have (on average 40.1578947368421) internal successors, (763), 19 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:57,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:57,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 38 of 71 [2024-11-28 05:21:57,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:58,068 INFO L124 PetriNetUnfolderBase]: 85/287 cut-off events. [2024-11-28 05:21:58,069 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2024-11-28 05:21:58,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 287 events. 85/287 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1269 event pairs, 60 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 539. Up to 152 conditions per place. [2024-11-28 05:21:58,073 INFO L140 encePairwiseOnDemand]: 59/71 looper letters, 46 selfloop transitions, 11 changer transitions 3/74 dead transitions. [2024-11-28 05:21:58,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 74 transitions, 329 flow [2024-11-28 05:21:58,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:21:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:21:58,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 431 transitions. [2024-11-28 05:21:58,075 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6070422535211267 [2024-11-28 05:21:58,075 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 163 flow. Second operand 10 states and 431 transitions. [2024-11-28 05:21:58,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 74 transitions, 329 flow [2024-11-28 05:21:58,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 74 transitions, 317 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:21:58,079 INFO L231 Difference]: Finished difference. Result has 79 places, 57 transitions, 194 flow [2024-11-28 05:21:58,080 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=194, PETRI_PLACES=79, PETRI_TRANSITIONS=57} [2024-11-28 05:21:58,081 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 6 predicate places. [2024-11-28 05:21:58,081 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 57 transitions, 194 flow [2024-11-28 05:21:58,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 40.1578947368421) internal successors, (763), 19 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:58,082 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:58,082 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:58,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 05:21:58,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 05:21:58,286 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:58,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:58,288 INFO L85 PathProgramCache]: Analyzing trace with hash -2013375506, now seen corresponding path program 1 times [2024-11-28 05:21:58,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:58,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132953130] [2024-11-28 05:21:58,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:58,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-28 05:21:58,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:58,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132953130] [2024-11-28 05:21:58,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132953130] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:21:58,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:21:58,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:21:58,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699598835] [2024-11-28 05:21:58,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:21:58,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:21:58,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:21:58,488 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:21:58,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:21:58,667 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 40 out of 71 [2024-11-28 05:21:58,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 57 transitions, 194 flow. Second operand has 6 states, 6 states have (on average 42.5) internal successors, (255), 6 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:58,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:21:58,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 40 of 71 [2024-11-28 05:21:58,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:21:58,861 INFO L124 PetriNetUnfolderBase]: 79/265 cut-off events. [2024-11-28 05:21:58,861 INFO L125 PetriNetUnfolderBase]: For 101/109 co-relation queries the response was YES. [2024-11-28 05:21:58,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 265 events. 79/265 cut-off events. For 101/109 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1112 event pairs, 54 based on Foata normal form. 17/254 useless extension candidates. Maximal degree in co-relation 547. Up to 132 conditions per place. [2024-11-28 05:21:58,863 INFO L140 encePairwiseOnDemand]: 64/71 looper letters, 47 selfloop transitions, 7 changer transitions 3/73 dead transitions. [2024-11-28 05:21:58,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 73 transitions, 342 flow [2024-11-28 05:21:58,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:21:58,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:21:58,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 287 transitions. [2024-11-28 05:21:58,865 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6737089201877934 [2024-11-28 05:21:58,865 INFO L175 Difference]: Start difference. First operand has 79 places, 57 transitions, 194 flow. Second operand 6 states and 287 transitions. [2024-11-28 05:21:58,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 73 transitions, 342 flow [2024-11-28 05:21:58,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 323 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 05:21:58,868 INFO L231 Difference]: Finished difference. Result has 75 places, 56 transitions, 187 flow [2024-11-28 05:21:58,868 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=75, PETRI_TRANSITIONS=56} [2024-11-28 05:21:58,868 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 2 predicate places. [2024-11-28 05:21:58,869 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 56 transitions, 187 flow [2024-11-28 05:21:58,869 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 42.5) internal successors, (255), 6 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:21:58,869 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:21:58,869 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:21:58,869 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:21:58,869 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:21:58,870 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:21:58,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1296719676, now seen corresponding path program 1 times [2024-11-28 05:21:58,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:21:58,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559517563] [2024-11-28 05:21:58,870 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:58,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:21:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:21:59,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:21:59,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559517563] [2024-11-28 05:21:59,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559517563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:21:59,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1014664128] [2024-11-28 05:21:59,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:21:59,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:21:59,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:21:59,434 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:21:59,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:21:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:21:59,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 05:21:59,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:21:59,818 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:21:59,818 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 11 treesize of output 11 [2024-11-28 05:21:59,828 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 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:21:59,905 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 [2024-11-28 05:21:59,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:21:59,913 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 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:22:00,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:22:00,107 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 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 05:22:00,162 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:22:00,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:22:00,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:22:00,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 37 treesize of output 55 [2024-11-28 05:22:00,569 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 05:22:00,569 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 12 [2024-11-28 05:22:00,824 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 05:22:00,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1014664128] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:22:00,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:22:00,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 6] total 15 [2024-11-28 05:22:00,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669411219] [2024-11-28 05:22:00,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:22:00,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:22:00,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:00,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:22:00,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2024-11-28 05:22:01,914 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 71 [2024-11-28 05:22:01,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 56 transitions, 187 flow. Second operand has 6 states, 6 states have (on average 45.5) internal successors, (273), 6 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:22:01,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:22:01,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 71 [2024-11-28 05:22:01,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:22:02,253 INFO L124 PetriNetUnfolderBase]: 79/268 cut-off events. [2024-11-28 05:22:02,253 INFO L125 PetriNetUnfolderBase]: For 127/133 co-relation queries the response was YES. [2024-11-28 05:22:02,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 580 conditions, 268 events. 79/268 cut-off events. For 127/133 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1163 event pairs, 47 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 561. Up to 166 conditions per place. [2024-11-28 05:22:02,255 INFO L140 encePairwiseOnDemand]: 68/71 looper letters, 45 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2024-11-28 05:22:02,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 63 transitions, 305 flow [2024-11-28 05:22:02,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:22:02,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:22:02,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 208 transitions. [2024-11-28 05:22:02,257 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7323943661971831 [2024-11-28 05:22:02,257 INFO L175 Difference]: Start difference. First operand has 75 places, 56 transitions, 187 flow. Second operand 4 states and 208 transitions. [2024-11-28 05:22:02,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 63 transitions, 305 flow [2024-11-28 05:22:02,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 63 transitions, 285 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-28 05:22:02,259 INFO L231 Difference]: Finished difference. Result has 72 places, 55 transitions, 175 flow [2024-11-28 05:22:02,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=72, PETRI_TRANSITIONS=55} [2024-11-28 05:22:02,261 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, -1 predicate places. [2024-11-28 05:22:02,261 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 55 transitions, 175 flow [2024-11-28 05:22:02,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 45.5) internal successors, (273), 6 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:22:02,262 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:22:02,262 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:22:02,275 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 05:22:02,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 05:22:02,463 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:22:02,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:22:02,463 INFO L85 PathProgramCache]: Analyzing trace with hash 2009869309, now seen corresponding path program 1 times [2024-11-28 05:22:02,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:22:02,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508115136] [2024-11-28 05:22:02,464 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:02,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:02,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:03,605 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:22:03,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:03,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508115136] [2024-11-28 05:22:03,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508115136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:22:03,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41421691] [2024-11-28 05:22:03,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:03,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:22:03,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:22:03,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:22:03,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:22:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:03,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 05:22:03,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:22:03,867 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 [2024-11-28 05:22:03,937 INFO L349 Elim1Store]: treesize reduction 4, result has 75.0 percent of original size [2024-11-28 05:22:03,937 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 19 treesize of output 19 [2024-11-28 05:22:03,949 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 23 treesize of output 1 [2024-11-28 05:22:03,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 8 treesize of output 1 [2024-11-28 05:22:04,139 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 37 treesize of output 25 [2024-11-28 05:22:04,149 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 37 treesize of output 25 [2024-11-28 05:22:04,222 INFO L349 Elim1Store]: treesize reduction 53, result has 19.7 percent of original size [2024-11-28 05:22:04,222 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 166 treesize of output 121 [2024-11-28 05:22:04,229 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 78 treesize of output 29 [2024-11-28 05:22:04,353 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 98 treesize of output 58 [2024-11-28 05:22:04,357 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 66 treesize of output 34 [2024-11-28 05:22:04,406 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 [2024-11-28 05:22:04,413 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 [2024-11-28 05:22:04,439 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:22:04,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:22:04,592 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (+ |c_~#slot~0.offset| (* |c_ULTIMATE.start_main_~j~0#1| 4)))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_~#slot~0.base|) .cse2)) (.cse1 (+ (select (select |c_#memory_$Pointer$#1.offset| |c_~#slot~0.base|) .cse2) 4))) (and (forall ((v_ArrVal_1015 (Array Int Int))) (<= 0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1015) .cse0) .cse1))) (forall ((v_ArrVal_1015 (Array Int Int)) (v_ArrVal_1014 (Array Int Int))) (<= (+ (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1015) .cse0) .cse1) 4) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_list_add_~node#1.base| v_ArrVal_1014) .cse0) .cse1))))))) is different from false [2024-11-28 05:22:04,609 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:22:04,610 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 39 [2024-11-28 05:22:04,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:22:04,622 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 79 [2024-11-28 05:22:04,627 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 15 treesize of output 3 [2024-11-28 05:22:04,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:22:04,650 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 78 [2024-11-28 05:22:04,660 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:22:04,660 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 68 [2024-11-28 05:22:04,664 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:22:04,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:22:04,669 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 37 [2024-11-28 05:22:04,673 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:22:04,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:22:04,678 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 12 [2024-11-28 05:22:04,893 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:22:04,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41421691] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:22:04,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:22:04,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 31 [2024-11-28 05:22:04,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276710961] [2024-11-28 05:22:04,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:22:04,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 05:22:04,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:04,894 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 05:22:04,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=834, Unknown=1, NotChecked=58, Total=992 [2024-11-28 05:22:05,188 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 71 [2024-11-28 05:22:05,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 55 transitions, 175 flow. Second operand has 32 states, 32 states have (on average 3.6875) internal successors, (118), 32 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:22:05,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:22:05,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 71 [2024-11-28 05:22:05,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:22:06,761 INFO L124 PetriNetUnfolderBase]: 290/640 cut-off events. [2024-11-28 05:22:06,768 INFO L125 PetriNetUnfolderBase]: For 106/108 co-relation queries the response was YES. [2024-11-28 05:22:06,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 640 events. 290/640 cut-off events. For 106/108 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3002 event pairs, 71 based on Foata normal form. 0/426 useless extension candidates. Maximal degree in co-relation 1387. Up to 296 conditions per place. [2024-11-28 05:22:06,778 INFO L140 encePairwiseOnDemand]: 57/71 looper letters, 91 selfloop transitions, 18 changer transitions 0/110 dead transitions. [2024-11-28 05:22:06,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 110 transitions, 521 flow [2024-11-28 05:22:06,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:22:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 05:22:06,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 127 transitions. [2024-11-28 05:22:06,783 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.12776659959758552 [2024-11-28 05:22:06,785 INFO L175 Difference]: Start difference. First operand has 72 places, 55 transitions, 175 flow. Second operand 14 states and 127 transitions. [2024-11-28 05:22:06,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 110 transitions, 521 flow [2024-11-28 05:22:06,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 110 transitions, 515 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:22:06,796 INFO L231 Difference]: Finished difference. Result has 88 places, 64 transitions, 267 flow [2024-11-28 05:22:06,796 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=267, PETRI_PLACES=88, PETRI_TRANSITIONS=64} [2024-11-28 05:22:06,796 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 15 predicate places. [2024-11-28 05:22:06,796 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 64 transitions, 267 flow [2024-11-28 05:22:06,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.6875) internal successors, (118), 32 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:22:06,797 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:22:06,797 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:22:06,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:22:07,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 05:22:07,001 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:22:07,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:22:07,002 INFO L85 PathProgramCache]: Analyzing trace with hash 2009869308, now seen corresponding path program 1 times [2024-11-28 05:22:07,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:22:07,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796818571] [2024-11-28 05:22:07,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:07,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:07,852 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:22:07,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:22:07,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796818571] [2024-11-28 05:22:07,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796818571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:22:07,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902868246] [2024-11-28 05:22:07,853 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:07,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:22:07,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:22:07,857 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:22:07,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:22:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:22:08,073 INFO L256 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 05:22:08,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:22:08,118 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 [2024-11-28 05:22:08,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2024-11-28 05:22:08,193 INFO L349 Elim1Store]: treesize reduction 42, result has 38.2 percent of original size [2024-11-28 05:22:08,194 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 25 treesize of output 37 [2024-11-28 05:22:08,363 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 37 treesize of output 25 [2024-11-28 05:22:08,435 INFO L349 Elim1Store]: treesize reduction 53, result has 19.7 percent of original size [2024-11-28 05:22:08,436 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 114 treesize of output 89 [2024-11-28 05:22:08,541 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 86 treesize of output 46 [2024-11-28 05:22:08,546 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 49 treesize of output 25 [2024-11-28 05:22:08,584 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 [2024-11-28 05:22:08,616 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:22:08,616 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:22:08,750 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:22:08,750 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-11-28 05:22:08,763 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:22:08,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 79 [2024-11-28 05:22:08,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 17 treesize of output 5 [2024-11-28 05:22:09,099 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 05:22:09,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902868246] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:22:09,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:22:09,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 31 [2024-11-28 05:22:09,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770227037] [2024-11-28 05:22:09,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:22:09,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 05:22:09,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:22:09,101 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 05:22:09,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=877, Unknown=11, NotChecked=0, Total=992 [2024-11-28 05:22:12,225 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 71 [2024-11-28 05:22:12,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 64 transitions, 267 flow. Second operand has 32 states, 32 states have (on average 8.65625) internal successors, (277), 32 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:22:12,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:22:12,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 71 [2024-11-28 05:22:12,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:22:13,630 INFO L124 PetriNetUnfolderBase]: 219/526 cut-off events. [2024-11-28 05:22:13,630 INFO L125 PetriNetUnfolderBase]: For 287/289 co-relation queries the response was YES. [2024-11-28 05:22:13,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1320 conditions, 526 events. 219/526 cut-off events. For 287/289 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2430 event pairs, 56 based on Foata normal form. 15/483 useless extension candidates. Maximal degree in co-relation 1295. Up to 236 conditions per place. [2024-11-28 05:22:13,633 INFO L140 encePairwiseOnDemand]: 57/71 looper letters, 80 selfloop transitions, 18 changer transitions 0/102 dead transitions. [2024-11-28 05:22:13,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 102 transitions, 550 flow [2024-11-28 05:22:13,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:22:13,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-11-28 05:22:13,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 186 transitions. [2024-11-28 05:22:13,637 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.18712273641851107 [2024-11-28 05:22:13,637 INFO L175 Difference]: Start difference. First operand has 88 places, 64 transitions, 267 flow. Second operand 14 states and 186 transitions. [2024-11-28 05:22:13,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 102 transitions, 550 flow [2024-11-28 05:22:13,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 102 transitions, 537 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-11-28 05:22:13,642 INFO L231 Difference]: Finished difference. Result has 96 places, 64 transitions, 300 flow [2024-11-28 05:22:13,642 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=71, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=300, PETRI_PLACES=96, PETRI_TRANSITIONS=64} [2024-11-28 05:22:13,643 INFO L279 CegarLoopForPetriNet]: 73 programPoint places, 23 predicate places. [2024-11-28 05:22:13,643 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 64 transitions, 300 flow [2024-11-28 05:22:13,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 8.65625) internal successors, (277), 32 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:22:13,643 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:22:13,643 INFO L206 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:22:13,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 05:22:13,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 05:22:13,845 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-28 05:22:13,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:22:13,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1543603724, now seen corresponding path program 1 times [2024-11-28 05:22:13,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:22:13,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967881918] [2024-11-28 05:22:13,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:22:13,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:22:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:22:14,089 INFO L357 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-28 05:22:14,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-28 05:22:14,317 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-28 05:22:14,318 INFO L340 BasicCegarLoop]: Counterexample is feasible [2024-11-28 05:22:14,320 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 50 remaining) [2024-11-28 05:22:14,322 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 50 remaining) [2024-11-28 05:22:14,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 50 remaining) [2024-11-28 05:22:14,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 50 remaining) [2024-11-28 05:22:14,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 50 remaining) [2024-11-28 05:22:14,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 50 remaining) [2024-11-28 05:22:14,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 50 remaining) [2024-11-28 05:22:14,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 50 remaining) [2024-11-28 05:22:14,323 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 50 remaining) [2024-11-28 05:22:14,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 50 remaining) [2024-11-28 05:22:14,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 50 remaining) [2024-11-28 05:22:14,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 50 remaining) [2024-11-28 05:22:14,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 50 remaining) [2024-11-28 05:22:14,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 50 remaining) [2024-11-28 05:22:14,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 50 remaining) [2024-11-28 05:22:14,324 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 50 remaining) [2024-11-28 05:22:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 50 remaining) [2024-11-28 05:22:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 50 remaining) [2024-11-28 05:22:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 50 remaining) [2024-11-28 05:22:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 50 remaining) [2024-11-28 05:22:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 50 remaining) [2024-11-28 05:22:14,325 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 50 remaining) [2024-11-28 05:22:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 50 remaining) [2024-11-28 05:22:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 50 remaining) [2024-11-28 05:22:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 50 remaining) [2024-11-28 05:22:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK (24 of 50 remaining) [2024-11-28 05:22:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 50 remaining) [2024-11-28 05:22:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 50 remaining) [2024-11-28 05:22:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 50 remaining) [2024-11-28 05:22:14,326 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 50 remaining) [2024-11-28 05:22:14,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 50 remaining) [2024-11-28 05:22:14,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 50 remaining) [2024-11-28 05:22:14,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 50 remaining) [2024-11-28 05:22:14,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 50 remaining) [2024-11-28 05:22:14,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 50 remaining) [2024-11-28 05:22:14,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 50 remaining) [2024-11-28 05:22:14,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 50 remaining) [2024-11-28 05:22:14,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 50 remaining) [2024-11-28 05:22:14,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 50 remaining) [2024-11-28 05:22:14,327 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 50 remaining) [2024-11-28 05:22:14,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 50 remaining) [2024-11-28 05:22:14,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 50 remaining) [2024-11-28 05:22:14,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 50 remaining) [2024-11-28 05:22:14,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 50 remaining) [2024-11-28 05:22:14,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 50 remaining) [2024-11-28 05:22:14,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 50 remaining) [2024-11-28 05:22:14,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 50 remaining) [2024-11-28 05:22:14,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 50 remaining) [2024-11-28 05:22:14,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 50 remaining) [2024-11-28 05:22:14,328 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 50 remaining) [2024-11-28 05:22:14,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 05:22:14,329 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:22:14,396 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-11-28 05:22:14,396 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 05:22:14,404 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 05:22:14 BasicIcfg [2024-11-28 05:22:14,404 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 05:22:14,405 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 05:22:14,405 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 05:22:14,405 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 05:22:14,406 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:21:45" (3/4) ... [2024-11-28 05:22:14,407 INFO L140 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-28 05:22:14,480 INFO L129 tionWitnessGenerator]: Generated YAML witness of length 27. [2024-11-28 05:22:14,546 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 05:22:14,547 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 05:22:14,547 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 05:22:14,548 INFO L158 Benchmark]: Toolchain (without parser) took 31046.99ms. Allocated memory was 142.6MB in the beginning and 629.1MB in the end (delta: 486.5MB). Free memory was 117.2MB in the beginning and 285.4MB in the end (delta: -168.2MB). Peak memory consumption was 318.3MB. Max. memory is 16.1GB. [2024-11-28 05:22:14,548 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 142.6MB. Free memory is still 80.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:22:14,548 INFO L158 Benchmark]: CACSL2BoogieTranslator took 820.55ms. Allocated memory is still 142.6MB. Free memory was 116.9MB in the beginning and 76.6MB in the end (delta: 40.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2024-11-28 05:22:14,548 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.20ms. Allocated memory is still 142.6MB. Free memory was 76.6MB in the beginning and 73.7MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:22:14,549 INFO L158 Benchmark]: Boogie Preprocessor took 83.28ms. Allocated memory is still 142.6MB. Free memory was 73.7MB in the beginning and 70.3MB in the end (delta: 3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 05:22:14,549 INFO L158 Benchmark]: RCFGBuilder took 1304.99ms. Allocated memory is still 142.6MB. Free memory was 70.3MB in the beginning and 76.9MB in the end (delta: -6.7MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2024-11-28 05:22:14,549 INFO L158 Benchmark]: TraceAbstraction took 28634.15ms. Allocated memory was 142.6MB in the beginning and 629.1MB in the end (delta: 486.5MB). Free memory was 76.9MB in the beginning and 293.7MB in the end (delta: -216.8MB). Peak memory consumption was 267.9MB. Max. memory is 16.1GB. [2024-11-28 05:22:14,550 INFO L158 Benchmark]: Witness Printer took 141.94ms. Allocated memory is still 629.1MB. Free memory was 293.7MB in the beginning and 285.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 05:22:14,551 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 142.6MB. Free memory is still 80.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 820.55ms. Allocated memory is still 142.6MB. Free memory was 116.9MB in the beginning and 76.6MB in the end (delta: 40.3MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.20ms. Allocated memory is still 142.6MB. Free memory was 76.6MB in the beginning and 73.7MB in the end (delta: 2.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 83.28ms. Allocated memory is still 142.6MB. Free memory was 73.7MB in the beginning and 70.3MB in the end (delta: 3.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1304.99ms. Allocated memory is still 142.6MB. Free memory was 70.3MB in the beginning and 76.9MB in the end (delta: -6.7MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. * TraceAbstraction took 28634.15ms. Allocated memory was 142.6MB in the beginning and 629.1MB in the end (delta: 486.5MB). Free memory was 76.9MB in the beginning and 293.7MB in the end (delta: -216.8MB). Peak memory consumption was 267.9MB. Max. memory is 16.1GB. * Witness Printer took 141.94ms. Allocated memory is still 629.1MB. Free memory was 293.7MB in the beginning and 285.4MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1243] 0 pthread_mutex_t mutex[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1244] 0 struct s *slot[10]; [L1254] 0 int i = 0; VAL [i=0, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=1, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=2, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=3, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=4, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=5, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=6, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=7, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=8, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=9, mutex={1:0}, slot={2:0}] [L1254] COND TRUE 0 i < 10 [L1254] 0 i++ VAL [i=10, mutex={1:0}, slot={2:0}] [L1254] COND FALSE 0 !(i < 10) [L1256] 0 int j = __VERIFIER_nondet_int(); [L1257] CALL 0 assume_abort_if_not(0 <= j && j < 10) [L11] COND FALSE 0 !(!cond) [L1257] RET 0 assume_abort_if_not(0 <= j && j < 10) [L1258] 0 struct s *p; [L1259] 0 pthread_t t1; [L1260] CALL, EXPR 0 new(1) [L1233] 0 struct s *p = malloc(sizeof(struct s)); [L1234] 0 p->datum = x VAL [mutex={1:0}, slot={2:0}] [L1235] 0 p->next = ((void *)0) [L1236] 0 return p; [L1260] RET, EXPR 0 new(1) [L1260] 0 slot[j] = new(1) [L1261] CALL, EXPR 0 new(2) [L1233] 0 struct s *p = malloc(sizeof(struct s)); [L1234] 0 p->datum = x VAL [mutex={1:0}, slot={2:0}] [L1235] 0 p->next = ((void *)0) [L1236] 0 return p; [L1261] RET, EXPR 0 new(2) [L1261] EXPR 0 slot[j] [L1261] CALL 0 list_add(new(2), slot[j]) [L1239] EXPR 0 list->next [L1239] 0 struct s *temp = list->next; [L1240] 0 list->next = node VAL [mutex={1:0}, slot={2:0}] [L1241] 0 node->next = temp [L1261] RET 0 list_add(new(2), slot[j]) [L1262] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [j=4, mutex={1:0}, slot={2:0}, t1=-1] [L1246] 1 int i = __VERIFIER_nondet_int(); [L1247] CALL 1 assume_abort_if_not(0 <= i && i < 10) [L11] COND FALSE 1 !(!cond) [L1247] RET 1 assume_abort_if_not(0 <= i && i < 10) [L1249] CALL, EXPR 1 new(3) [L1233] 1 struct s *p = malloc(sizeof(struct s)); [L1234] 1 p->datum = x VAL [\old(arg)={0:0}, arg={0:0}, i=7, mutex={1:0}, slot={2:0}] [L1235] 1 p->next = ((void *)0) [L1236] 1 return p; [L1249] RET, EXPR 1 new(3) [L1249] EXPR 1 slot[i] [L1249] CALL 1 list_add(new(3), slot[i]) [L1239] 1 list->next - 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: 1253]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1262]: 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. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 96 locations, 50 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: 28.4s, OverallIterations: 19, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 14.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 24 mSolverCounterUnknown, 3387 SdHoareTripleChecker+Valid, 11.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2588 mSDsluCounter, 2425 SdHoareTripleChecker+Invalid, 9.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 137 IncrementalHoareTripleChecker+Unchecked, 2252 mSDsCounter, 129 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11920 IncrementalHoareTripleChecker+Invalid, 12210 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 129 mSolverCounterUnsat, 173 mSDtfsCounter, 11920 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 362 GetRequests, 183 SyntacticMatches, 1 SemanticMatches, 178 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 984 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=300occurred in iteration=18, InterpolantAutomatonStates: 113, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 10.0s InterpolantComputationTime, 485 NumberOfCodeBlocks, 471 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 548 ConstructedInterpolants, 29 QuantifiedInterpolants, 7355 SizeOfPredicates, 64 NumberOfNonLiveVariables, 2326 ConjunctsInSsa, 175 ConjunctsInUnsatCore, 30 InterpolantComputations, 13 PerfectInterpolantSequences, 1259/1315 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 proved your program to be incorrect! [2024-11-28 05:22:14,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8305935d-ee4f-4654-9b38-aa8a17b1657e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)