./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.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_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:39:45,356 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:39:45,418 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 10:39:45,423 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:39:45,423 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:39:45,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:39:45,446 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:39:45,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:39:45,447 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:39:45,447 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:39:45,447 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:39:45,447 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:39:45,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:39:45,447 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:39:45,448 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:39:45,448 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:39:45,448 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:39:45,448 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:39:45,448 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:39:45,448 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:39:45,448 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 10:39:45,448 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 10:39:45,448 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 10:39:45,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:39:45,448 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 10:39:45,449 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 10:39:45,449 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:39:45,449 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:39:45,449 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:39:45,449 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:39:45,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:39:45,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:39:45,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:39:45,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:39:45,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:39:45,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:39:45,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:39:45,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:39:45,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:39:45,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:39:45,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:39:45,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:39:45,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:39:45,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:39:45,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:39:45,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:39:45,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:39:45,450 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_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 23c4aefdda14d4315577cd0030d174ab477745d4b270d2de822290a016a0ff8d [2024-12-02 10:39:45,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:39:45,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:39:45,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:39:45,726 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:39:45,726 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:39:45,728 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i [2024-12-02 10:39:48,381 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1/data/e631b94ec/6259e99255df421a80c93b10cd4ac42e/FLAG3d0bc28e6 [2024-12-02 10:39:48,609 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:39:48,610 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28136b76-7441-4116-839b-0c8a57ecdd0c/sv-benchmarks/c/goblint-regression/28-race_reach_83-list2_racing1.i [2024-12-02 10:39:48,624 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1/data/e631b94ec/6259e99255df421a80c93b10cd4ac42e/FLAG3d0bc28e6 [2024-12-02 10:39:48,638 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1/data/e631b94ec/6259e99255df421a80c93b10cd4ac42e [2024-12-02 10:39:48,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:39:48,641 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:39:48,643 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:39:48,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:39:48,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:39:48,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:39:48" (1/1) ... [2024-12-02 10:39:48,648 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ee980b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:48, skipping insertion in model container [2024-12-02 10:39:48,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:39:48" (1/1) ... [2024-12-02 10:39:48,677 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:39:49,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:39:49,121 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:39:49,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:39:49,229 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:39:49,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49 WrapperNode [2024-12-02 10:39:49,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:39:49,230 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:39:49,230 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:39:49,230 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:39:49,235 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49" (1/1) ... [2024-12-02 10:39:49,248 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49" (1/1) ... [2024-12-02 10:39:49,272 INFO L138 Inliner]: procedures = 280, calls = 97, calls flagged for inlining = 11, calls inlined = 12, statements flattened = 357 [2024-12-02 10:39:49,272 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:39:49,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:39:49,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:39:49,273 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:39:49,280 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49" (1/1) ... [2024-12-02 10:39:49,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49" (1/1) ... [2024-12-02 10:39:49,285 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49" (1/1) ... [2024-12-02 10:39:49,311 INFO L175 MemorySlicer]: Split 51 memory accesses to 9 slices as follows [2, 2, 5, 5, 23, 5, 2, 5, 2]. 45 percent of accesses are in the largest equivalence class. The 22 initializations are split as follows [2, 0, 5, 5, 0, 5, 0, 5, 0]. The 15 writes are split as follows [0, 1, 0, 0, 12, 0, 1, 0, 1]. [2024-12-02 10:39:49,312 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49" (1/1) ... [2024-12-02 10:39:49,312 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49" (1/1) ... [2024-12-02 10:39:49,329 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49" (1/1) ... [2024-12-02 10:39:49,330 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49" (1/1) ... [2024-12-02 10:39:49,335 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49" (1/1) ... [2024-12-02 10:39:49,338 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49" (1/1) ... [2024-12-02 10:39:49,340 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49" (1/1) ... [2024-12-02 10:39:49,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:39:49,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:39:49,346 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:39:49,346 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:39:49,351 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49" (1/1) ... [2024-12-02 10:39:49,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:39:49,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:39:49,378 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:39:49,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28136b76-7441-4116-839b-0c8a57ecdd0c/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:39:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-12-02 10:39:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 10:39:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 10:39:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-12-02 10:39:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-12-02 10:39:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-12-02 10:39:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-12-02 10:39:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-12-02 10:39:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2024-12-02 10:39:49,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#8 [2024-12-02 10:39:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2024-12-02 10:39:49,405 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2024-12-02 10:39:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 10:39:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 10:39:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 10:39:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 10:39:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-12-02 10:39:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-12-02 10:39:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-12-02 10:39:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-12-02 10:39:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-12-02 10:39:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-12-02 10:39:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-12-02 10:39:49,405 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2024-12-02 10:39:49,406 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-12-02 10:39:49,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#8 [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2024-12-02 10:39:49,407 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 10:39:49,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:39:49,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:39:49,409 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 10:39:49,587 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:39:49,588 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:39:50,144 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 10:39:50,144 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:39:50,388 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:39:50,388 INFO L312 CfgBuilder]: Removed 18 assume(true) statements. [2024-12-02 10:39:50,388 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:39:50 BoogieIcfgContainer [2024-12-02 10:39:50,388 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:39:50,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:39:50,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:39:50,395 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:39:50,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:39:48" (1/3) ... [2024-12-02 10:39:50,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b8d7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:39:50, skipping insertion in model container [2024-12-02 10:39:50,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:39:49" (2/3) ... [2024-12-02 10:39:50,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b8d7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:39:50, skipping insertion in model container [2024-12-02 10:39:50,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:39:50" (3/3) ... [2024-12-02 10:39:50,397 INFO L128 eAbstractionObserver]: Analyzing ICFG 28-race_reach_83-list2_racing1.i [2024-12-02 10:39:50,428 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:39:50,429 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 28-race_reach_83-list2_racing1.i that has 4 procedures, 189 locations, 1 initial locations, 18 loop locations, and 61 error locations. [2024-12-02 10:39:50,430 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 10:39:50,541 INFO L143 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2024-12-02 10:39:50,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 230 transitions, 499 flow [2024-12-02 10:39:50,792 INFO L124 PetriNetUnfolderBase]: 126/749 cut-off events. [2024-12-02 10:39:50,794 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2024-12-02 10:39:50,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 749 events. 126/749 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5612 event pairs, 0 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 388. Up to 16 conditions per place. [2024-12-02 10:39:50,809 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 230 transitions, 499 flow [2024-12-02 10:39:50,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 230 transitions, 499 flow [2024-12-02 10:39:50,832 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:39:50,843 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;@44e3a651, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:39:50,844 INFO L334 AbstractCegarLoop]: Starting to check reachability of 104 error locations. [2024-12-02 10:39:50,849 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 10:39:50,849 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2024-12-02 10:39:50,849 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 10:39:50,849 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:39:50,849 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-12-02 10:39:50,850 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-12-02 10:39:50,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:39:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash 32362, now seen corresponding path program 1 times [2024-12-02 10:39:50,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:39:50,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680696262] [2024-12-02 10:39:50,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:39:50,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:39:50,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:39:51,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:39:51,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:39:51,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680696262] [2024-12-02 10:39:51,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680696262] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:39:51,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:39:51,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:39:51,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959743118] [2024-12-02 10:39:51,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:39:51,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:39:51,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:39:51,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:39:51,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:39:51,272 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 230 [2024-12-02 10:39:51,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 230 transitions, 499 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:39:51,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:39:51,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 230 [2024-12-02 10:39:51,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:40:11,417 INFO L124 PetriNetUnfolderBase]: 153559/282326 cut-off events. [2024-12-02 10:40:11,417 INFO L125 PetriNetUnfolderBase]: For 8674/8674 co-relation queries the response was YES. [2024-12-02 10:40:11,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495216 conditions, 282326 events. 153559/282326 cut-off events. For 8674/8674 co-relation queries the response was YES. Maximal size of possible extension queue 5879. Compared 3138988 event pairs, 141756 based on Foata normal form. 31418/282528 useless extension candidates. Maximal degree in co-relation 422808. Up to 208485 conditions per place. [2024-12-02 10:40:12,914 INFO L140 encePairwiseOnDemand]: 198/230 looper letters, 93 selfloop transitions, 2 changer transitions 0/198 dead transitions. [2024-12-02 10:40:12,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 198 transitions, 625 flow [2024-12-02 10:40:12,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:40:12,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:40:12,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2024-12-02 10:40:12,925 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6289855072463768 [2024-12-02 10:40:12,927 INFO L175 Difference]: Start difference. First operand has 198 places, 230 transitions, 499 flow. Second operand 3 states and 434 transitions. [2024-12-02 10:40:12,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 198 transitions, 625 flow [2024-12-02 10:40:13,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 198 transitions, 625 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 10:40:13,107 INFO L231 Difference]: Finished difference. Result has 194 places, 198 transitions, 439 flow [2024-12-02 10:40:13,109 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=439, PETRI_PLACES=194, PETRI_TRANSITIONS=198} [2024-12-02 10:40:13,112 INFO L279 CegarLoopForPetriNet]: 198 programPoint places, -4 predicate places. [2024-12-02 10:40:13,112 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 198 transitions, 439 flow [2024-12-02 10:40:13,112 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:40:13,112 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:40:13,112 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1] [2024-12-02 10:40:13,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:40:13,113 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-12-02 10:40:13,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:40:13,113 INFO L85 PathProgramCache]: Analyzing trace with hash 32363, now seen corresponding path program 1 times [2024-12-02 10:40:13,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:40:13,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966092308] [2024-12-02 10:40:13,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:13,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:40:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:40:13,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:40:13,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966092308] [2024-12-02 10:40:13,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966092308] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:40:13,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:40:13,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-12-02 10:40:13,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817932964] [2024-12-02 10:40:13,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:40:13,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:40:13,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:40:13,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:40:13,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:40:13,346 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 230 [2024-12-02 10:40:13,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 198 transitions, 439 flow. Second operand has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:40:13,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:40:13,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 230 [2024-12-02 10:40:13,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:40:32,487 INFO L124 PetriNetUnfolderBase]: 153559/282322 cut-off events. [2024-12-02 10:40:32,487 INFO L125 PetriNetUnfolderBase]: For 8675/8675 co-relation queries the response was YES. [2024-12-02 10:40:33,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495213 conditions, 282322 events. 153559/282322 cut-off events. For 8675/8675 co-relation queries the response was YES. Maximal size of possible extension queue 5879. Compared 3138607 event pairs, 141756 based on Foata normal form. 3/251109 useless extension candidates. Maximal degree in co-relation 495197. Up to 208485 conditions per place. [2024-12-02 10:40:34,009 INFO L140 encePairwiseOnDemand]: 224/230 looper letters, 91 selfloop transitions, 2 changer transitions 0/194 dead transitions. [2024-12-02 10:40:34,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 194 transitions, 617 flow [2024-12-02 10:40:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:40:34,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:40:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2024-12-02 10:40:34,012 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5971014492753624 [2024-12-02 10:40:34,012 INFO L175 Difference]: Start difference. First operand has 194 places, 198 transitions, 439 flow. Second operand 3 states and 412 transitions. [2024-12-02 10:40:34,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 194 transitions, 617 flow [2024-12-02 10:40:34,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 194 transitions, 613 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:40:34,113 INFO L231 Difference]: Finished difference. Result has 190 places, 194 transitions, 431 flow [2024-12-02 10:40:34,113 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=431, PETRI_PLACES=190, PETRI_TRANSITIONS=194} [2024-12-02 10:40:34,114 INFO L279 CegarLoopForPetriNet]: 198 programPoint places, -8 predicate places. [2024-12-02 10:40:34,114 INFO L471 AbstractCegarLoop]: Abstraction has has 190 places, 194 transitions, 431 flow [2024-12-02 10:40:34,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.66666666666667) internal successors, (317), 3 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:40:34,114 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:40:34,114 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:40:34,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:40:34,114 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-12-02 10:40:34,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:40:34,115 INFO L85 PathProgramCache]: Analyzing trace with hash -270112970, now seen corresponding path program 1 times [2024-12-02 10:40:34,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:40:34,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768928027] [2024-12-02 10:40:34,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:34,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:40:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:34,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:40:34,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:40:34,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768928027] [2024-12-02 10:40:34,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768928027] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:40:34,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:40:34,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:40:34,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252516435] [2024-12-02 10:40:34,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:40:34,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:40:34,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:40:34,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:40:34,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:40:34,279 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 230 [2024-12-02 10:40:34,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 194 transitions, 431 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:40:34,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:40:34,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 230 [2024-12-02 10:40:34,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:40:53,799 INFO L124 PetriNetUnfolderBase]: 171331/305090 cut-off events. [2024-12-02 10:40:53,799 INFO L125 PetriNetUnfolderBase]: For 8674/8674 co-relation queries the response was YES. [2024-12-02 10:40:54,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 542857 conditions, 305090 events. 171331/305090 cut-off events. For 8674/8674 co-relation queries the response was YES. Maximal size of possible extension queue 6335. Compared 3345438 event pairs, 124188 based on Foata normal form. 0/273899 useless extension candidates. Maximal degree in co-relation 542841. Up to 183636 conditions per place. [2024-12-02 10:40:55,131 INFO L140 encePairwiseOnDemand]: 226/230 looper letters, 155 selfloop transitions, 2 changer transitions 0/254 dead transitions. [2024-12-02 10:40:55,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 254 transitions, 865 flow [2024-12-02 10:40:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:40:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:40:55,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2024-12-02 10:40:55,133 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6869565217391305 [2024-12-02 10:40:55,133 INFO L175 Difference]: Start difference. First operand has 190 places, 194 transitions, 431 flow. Second operand 3 states and 474 transitions. [2024-12-02 10:40:55,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 254 transitions, 865 flow [2024-12-02 10:40:55,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 254 transitions, 861 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:40:55,222 INFO L231 Difference]: Finished difference. Result has 188 places, 192 transitions, 427 flow [2024-12-02 10:40:55,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=427, PETRI_PLACES=188, PETRI_TRANSITIONS=192} [2024-12-02 10:40:55,223 INFO L279 CegarLoopForPetriNet]: 198 programPoint places, -10 predicate places. [2024-12-02 10:40:55,223 INFO L471 AbstractCegarLoop]: Abstraction has has 188 places, 192 transitions, 427 flow [2024-12-02 10:40:55,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:40:55,223 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:40:55,223 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:40:55,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:40:55,224 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-12-02 10:40:55,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:40:55,224 INFO L85 PathProgramCache]: Analyzing trace with hash -270112969, now seen corresponding path program 1 times [2024-12-02 10:40:55,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:40:55,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493131484] [2024-12-02 10:40:55,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:40:55,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:40:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:40:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:40:55,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:40:55,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493131484] [2024-12-02 10:40:55,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493131484] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:40:55,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:40:55,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:40:55,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496211188] [2024-12-02 10:40:55,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:40:55,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:40:55,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:40:55,500 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:40:55,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:40:55,575 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 230 [2024-12-02 10:40:55,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 192 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:40:55,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:40:55,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 230 [2024-12-02 10:40:55,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:41:13,212 INFO L124 PetriNetUnfolderBase]: 148430/274063 cut-off events. [2024-12-02 10:41:13,212 INFO L125 PetriNetUnfolderBase]: For 15666/15726 co-relation queries the response was YES. [2024-12-02 10:41:13,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486059 conditions, 274063 events. 148430/274063 cut-off events. For 15666/15726 co-relation queries the response was YES. Maximal size of possible extension queue 5810. Compared 3064437 event pairs, 130861 based on Foata normal form. 1/243969 useless extension candidates. Maximal degree in co-relation 428756. Up to 200922 conditions per place. [2024-12-02 10:41:14,725 INFO L140 encePairwiseOnDemand]: 225/230 looper letters, 94 selfloop transitions, 3 changer transitions 0/195 dead transitions. [2024-12-02 10:41:14,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 195 transitions, 627 flow [2024-12-02 10:41:14,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:41:14,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:41:14,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2024-12-02 10:41:14,727 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6130434782608696 [2024-12-02 10:41:14,727 INFO L175 Difference]: Start difference. First operand has 188 places, 192 transitions, 427 flow. Second operand 3 states and 423 transitions. [2024-12-02 10:41:14,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 195 transitions, 627 flow [2024-12-02 10:41:15,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 195 transitions, 623 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 10:41:15,591 INFO L231 Difference]: Finished difference. Result has 189 places, 194 transitions, 444 flow [2024-12-02 10:41:15,592 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=444, PETRI_PLACES=189, PETRI_TRANSITIONS=194} [2024-12-02 10:41:15,592 INFO L279 CegarLoopForPetriNet]: 198 programPoint places, -9 predicate places. [2024-12-02 10:41:15,592 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 194 transitions, 444 flow [2024-12-02 10:41:15,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:41:15,593 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:41:15,593 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:41:15,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:41:15,593 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-12-02 10:41:15,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:15,594 INFO L85 PathProgramCache]: Analyzing trace with hash 1834498705, now seen corresponding path program 1 times [2024-12-02 10:41:15,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:15,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139094540] [2024-12-02 10:41:15,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:15,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:15,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:15,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:41:15,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:15,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139094540] [2024-12-02 10:41:15,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139094540] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:15,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:41:15,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:41:15,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102504863] [2024-12-02 10:41:15,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:15,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:41:15,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:15,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:41:15,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:41:15,803 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 230 [2024-12-02 10:41:15,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 194 transitions, 444 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:41:15,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:41:15,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 230 [2024-12-02 10:41:15,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:41:42,822 INFO L124 PetriNetUnfolderBase]: 208076/392683 cut-off events. [2024-12-02 10:41:42,822 INFO L125 PetriNetUnfolderBase]: For 17285/17345 co-relation queries the response was YES. [2024-12-02 10:41:43,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685400 conditions, 392683 events. 208076/392683 cut-off events. For 17285/17345 co-relation queries the response was YES. Maximal size of possible extension queue 8300. Compared 4678770 event pairs, 161673 based on Foata normal form. 6959/346163 useless extension candidates. Maximal degree in co-relation 628938. Up to 254122 conditions per place. [2024-12-02 10:41:44,706 INFO L140 encePairwiseOnDemand]: 224/230 looper letters, 173 selfloop transitions, 5 changer transitions 0/275 dead transitions. [2024-12-02 10:41:44,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 275 transitions, 990 flow [2024-12-02 10:41:44,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:41:44,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:41:44,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2024-12-02 10:41:44,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7231884057971014 [2024-12-02 10:41:44,708 INFO L175 Difference]: Start difference. First operand has 189 places, 194 transitions, 444 flow. Second operand 3 states and 499 transitions. [2024-12-02 10:41:44,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 275 transitions, 990 flow [2024-12-02 10:41:44,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 275 transitions, 987 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:41:44,734 INFO L231 Difference]: Finished difference. Result has 191 places, 197 transitions, 474 flow [2024-12-02 10:41:44,734 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=441, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=474, PETRI_PLACES=191, PETRI_TRANSITIONS=197} [2024-12-02 10:41:44,734 INFO L279 CegarLoopForPetriNet]: 198 programPoint places, -7 predicate places. [2024-12-02 10:41:44,734 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 197 transitions, 474 flow [2024-12-02 10:41:44,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:41:44,735 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:41:44,735 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:41:44,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:41:44,735 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-12-02 10:41:44,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:41:44,735 INFO L85 PathProgramCache]: Analyzing trace with hash 1834498704, now seen corresponding path program 1 times [2024-12-02 10:41:44,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:41:44,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371283951] [2024-12-02 10:41:44,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:41:44,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:41:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:41:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:41:44,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:41:44,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371283951] [2024-12-02 10:41:44,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371283951] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:41:44,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:41:44,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 10:41:44,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518508805] [2024-12-02 10:41:44,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:41:44,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:41:44,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:41:44,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:41:44,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 10:41:44,887 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 230 [2024-12-02 10:41:44,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 197 transitions, 474 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:41:44,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:41:44,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 230 [2024-12-02 10:41:44,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 10:42:16,710 INFO L124 PetriNetUnfolderBase]: 261257/474588 cut-off events. [2024-12-02 10:42:16,711 INFO L125 PetriNetUnfolderBase]: For 63478/70491 co-relation queries the response was YES. [2024-12-02 10:42:17,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879411 conditions, 474588 events. 261257/474588 cut-off events. For 63478/70491 co-relation queries the response was YES. Maximal size of possible extension queue 9511. Compared 5498638 event pairs, 185348 based on Foata normal form. 13915/434956 useless extension candidates. Maximal degree in co-relation 822948. Up to 236849 conditions per place. [2024-12-02 10:42:19,069 INFO L140 encePairwiseOnDemand]: 224/230 looper letters, 177 selfloop transitions, 6 changer transitions 0/279 dead transitions. [2024-12-02 10:42:19,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 279 transitions, 1037 flow [2024-12-02 10:42:19,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:42:19,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-12-02 10:42:19,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2024-12-02 10:42:19,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7217391304347827 [2024-12-02 10:42:19,070 INFO L175 Difference]: Start difference. First operand has 191 places, 197 transitions, 474 flow. Second operand 3 states and 498 transitions. [2024-12-02 10:42:19,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 279 transitions, 1037 flow [2024-12-02 10:42:19,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 279 transitions, 1031 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 10:42:19,105 INFO L231 Difference]: Finished difference. Result has 194 places, 201 transitions, 517 flow [2024-12-02 10:42:19,105 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=230, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=517, PETRI_PLACES=194, PETRI_TRANSITIONS=201} [2024-12-02 10:42:19,106 INFO L279 CegarLoopForPetriNet]: 198 programPoint places, -4 predicate places. [2024-12-02 10:42:19,106 INFO L471 AbstractCegarLoop]: Abstraction has has 194 places, 201 transitions, 517 flow [2024-12-02 10:42:19,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:42:19,106 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 10:42:19,106 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:42:19,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:42:19,107 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [t2_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, t2_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 101 more)] === [2024-12-02 10:42:19,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:42:19,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1034688445, now seen corresponding path program 1 times [2024-12-02 10:42:19,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:42:19,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082540588] [2024-12-02 10:42:19,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:42:19,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:42:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:42:19,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:42:19,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:42:19,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082540588] [2024-12-02 10:42:19,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082540588] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:42:19,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:42:19,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 10:42:19,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965022564] [2024-12-02 10:42:19,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:42:19,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:42:19,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:42:19,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:42:19,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:42:19,291 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 230 [2024-12-02 10:42:19,291 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 201 transitions, 517 flow. Second operand has 4 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 10:42:19,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 10:42:19,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 230 [2024-12-02 10:42:19,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand