./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU --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 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:19:12,272 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:19:12,343 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-31 22:19:12,348 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:19:12,351 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:19:12,375 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:19:12,376 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:19:12,376 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:19:12,377 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:19:12,377 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:19:12,377 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:19:12,378 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:19:12,378 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:19:12,379 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:19:12,379 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:19:12,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:19:12,380 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:19:12,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:19:12,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:19:12,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:19:12,382 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-31 22:19:12,383 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-31 22:19:12,383 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-31 22:19:12,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:19:12,384 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-31 22:19:12,384 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:19:12,384 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-31 22:19:12,385 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:19:12,385 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:19:12,386 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:19:12,386 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:19:12,386 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:19:12,387 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:19:12,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:12,388 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:19:12,388 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:19:12,388 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:19:12,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:19:12,389 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:19:12,389 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:19:12,390 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:19:12,390 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:19:12,391 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8fcb457b1bed8494a9a3b58e82500f367f4337ac38b5a41a5dad0da896f97e40 [2024-10-31 22:19:12,659 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:19:12,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:19:12,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:19:12,710 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:19:12,710 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:19:12,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i Unable to find full path for "g++" [2024-10-31 22:19:14,753 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:19:15,046 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:19:15,047 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/sv-benchmarks/c/pthread-deagle/circular_buffer_ok.i [2024-10-31 22:19:15,065 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/data/763ebe080/178a941618794f52b280439f94b02a9c/FLAGc795186a4 [2024-10-31 22:19:15,344 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/data/763ebe080/178a941618794f52b280439f94b02a9c [2024-10-31 22:19:15,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:19:15,348 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:19:15,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:19:15,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:19:15,355 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:19:15,356 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:19:15" (1/1) ... [2024-10-31 22:19:15,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ac8c45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:15, skipping insertion in model container [2024-10-31 22:19:15,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:19:15" (1/1) ... [2024-10-31 22:19:15,400 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:19:15,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:19:15,890 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:19:15,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:19:16,026 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:19:16,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16 WrapperNode [2024-10-31 22:19:16,027 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:19:16,028 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:19:16,028 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:19:16,029 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:19:16,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,062 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,112 INFO L138 Inliner]: procedures = 168, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 151 [2024-10-31 22:19:16,113 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:19:16,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:19:16,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:19:16,116 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:19:16,131 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,131 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,137 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,173 INFO L175 MemorySlicer]: Split 23 memory accesses to 4 slices as follows [2, 1, 12, 8]. 52 percent of accesses are in the largest equivalence class. The 21 initializations are split as follows [2, 1, 10, 8]. The 1 writes are split as follows [0, 0, 1, 0]. [2024-10-31 22:19:16,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,177 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,197 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,204 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,207 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,213 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,219 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:19:16,222 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:19:16,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:19:16,222 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:19:16,223 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (1/1) ... [2024-10-31 22:19:16,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:19:16,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:16,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:19:16,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:19:16,322 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-31 22:19:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-31 22:19:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-31 22:19:16,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-31 22:19:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2024-10-31 22:19:16,325 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2024-10-31 22:19:16,325 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2024-10-31 22:19:16,326 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2024-10-31 22:19:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-31 22:19:16,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-31 22:19:16,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-31 22:19:16,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-31 22:19:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-10-31 22:19:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:19:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-31 22:19:16,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-31 22:19:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-31 22:19:16,330 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-10-31 22:19:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:19:16,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-31 22:19:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-31 22:19:16,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-31 22:19:16,333 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-10-31 22:19:16,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:19:16,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:19:16,336 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:19:16,565 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:19:16,571 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:19:17,013 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:19:17,014 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:19:17,266 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:19:17,266 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-31 22:19:17,269 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:17 BoogieIcfgContainer [2024-10-31 22:19:17,269 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:19:17,272 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:19:17,272 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:19:17,276 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:19:17,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:19:15" (1/3) ... [2024-10-31 22:19:17,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493c8046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:19:17, skipping insertion in model container [2024-10-31 22:19:17,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:19:16" (2/3) ... [2024-10-31 22:19:17,277 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@493c8046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:19:17, skipping insertion in model container [2024-10-31 22:19:17,277 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:19:17" (3/3) ... [2024-10-31 22:19:17,279 INFO L112 eAbstractionObserver]: Analyzing ICFG circular_buffer_ok.i [2024-10-31 22:19:17,295 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:19:17,296 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-31 22:19:17,296 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:19:17,367 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-10-31 22:19:17,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 66 transitions, 146 flow [2024-10-31 22:19:17,471 INFO L124 PetriNetUnfolderBase]: 12/64 cut-off events. [2024-10-31 22:19:17,471 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:19:17,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 64 events. 12/64 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 193 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2024-10-31 22:19:17,479 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 66 transitions, 146 flow [2024-10-31 22:19:17,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 63 transitions, 138 flow [2024-10-31 22:19:17,499 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:19:17,507 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;@307b035e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:19:17,507 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-31 22:19:17,525 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:19:17,525 INFO L124 PetriNetUnfolderBase]: 1/24 cut-off events. [2024-10-31 22:19:17,526 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-31 22:19:17,526 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:17,527 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:17,527 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:17,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:17,534 INFO L85 PathProgramCache]: Analyzing trace with hash -17531593, now seen corresponding path program 1 times [2024-10-31 22:19:17,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:17,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706306264] [2024-10-31 22:19:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:17,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:17,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:18,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:18,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706306264] [2024-10-31 22:19:18,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706306264] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:18,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:18,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:19:18,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791203247] [2024-10-31 22:19:18,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:18,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:18,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:18,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:18,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:18,163 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-10-31 22:19:18,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 63 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:18,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:18,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-10-31 22:19:18,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:18,549 INFO L124 PetriNetUnfolderBase]: 571/1094 cut-off events. [2024-10-31 22:19:18,550 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2024-10-31 22:19:18,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2049 conditions, 1094 events. 571/1094 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6028 event pairs, 437 based on Foata normal form. 154/1136 useless extension candidates. Maximal degree in co-relation 1967. Up to 912 conditions per place. [2024-10-31 22:19:18,569 INFO L140 encePairwiseOnDemand]: 57/66 looper letters, 32 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2024-10-31 22:19:18,569 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 52 transitions, 182 flow [2024-10-31 22:19:18,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:18,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:19:18,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2024-10-31 22:19:18,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2024-10-31 22:19:18,589 INFO L175 Difference]: Start difference. First operand has 58 places, 63 transitions, 138 flow. Second operand 3 states and 104 transitions. [2024-10-31 22:19:18,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 52 transitions, 182 flow [2024-10-31 22:19:18,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 52 transitions, 174 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-31 22:19:18,603 INFO L231 Difference]: Finished difference. Result has 51 places, 52 transitions, 110 flow [2024-10-31 22:19:18,606 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=51, PETRI_TRANSITIONS=52} [2024-10-31 22:19:18,614 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2024-10-31 22:19:18,614 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 52 transitions, 110 flow [2024-10-31 22:19:18,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:18,615 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:18,615 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:18,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:19:18,616 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:18,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:18,617 INFO L85 PathProgramCache]: Analyzing trace with hash -17531592, now seen corresponding path program 1 times [2024-10-31 22:19:18,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:18,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306661860] [2024-10-31 22:19:18,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:18,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:18,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:18,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306661860] [2024-10-31 22:19:18,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306661860] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:18,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:18,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-31 22:19:18,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559554767] [2024-10-31 22:19:18,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:18,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:18,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:18,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:18,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:19,007 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-10-31 22:19:19,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 52 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:19,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:19,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-10-31 22:19:19,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:19,430 INFO L124 PetriNetUnfolderBase]: 1024/1958 cut-off events. [2024-10-31 22:19:19,430 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-10-31 22:19:19,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3583 conditions, 1958 events. 1024/1958 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 11144 event pairs, 370 based on Foata normal form. 0/1779 useless extension candidates. Maximal degree in co-relation 3577. Up to 901 conditions per place. [2024-10-31 22:19:19,448 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 59 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2024-10-31 22:19:19,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 79 transitions, 289 flow [2024-10-31 22:19:19,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:19,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:19:19,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2024-10-31 22:19:19,452 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6515151515151515 [2024-10-31 22:19:19,452 INFO L175 Difference]: Start difference. First operand has 51 places, 52 transitions, 110 flow. Second operand 3 states and 129 transitions. [2024-10-31 22:19:19,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 79 transitions, 289 flow [2024-10-31 22:19:19,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 79 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:19:19,458 INFO L231 Difference]: Finished difference. Result has 53 places, 53 transitions, 123 flow [2024-10-31 22:19:19,459 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=123, PETRI_PLACES=53, PETRI_TRANSITIONS=53} [2024-10-31 22:19:19,460 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2024-10-31 22:19:19,461 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 53 transitions, 123 flow [2024-10-31 22:19:19,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:19,462 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:19,462 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:19,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:19:19,463 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:19,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:19,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1702824681, now seen corresponding path program 1 times [2024-10-31 22:19:19,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:19,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982409952] [2024-10-31 22:19:19,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:19,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:19,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:19,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982409952] [2024-10-31 22:19:19,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982409952] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:19,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:19,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-31 22:19:19,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813932747] [2024-10-31 22:19:19,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:19,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:19:19,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:19,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:19:19,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:19:19,758 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 66 [2024-10-31 22:19:19,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 53 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:19,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:19,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 66 [2024-10-31 22:19:19,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:20,094 INFO L124 PetriNetUnfolderBase]: 1068/1989 cut-off events. [2024-10-31 22:19:20,095 INFO L125 PetriNetUnfolderBase]: For 51/53 co-relation queries the response was YES. [2024-10-31 22:19:20,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3818 conditions, 1989 events. 1068/1989 cut-off events. For 51/53 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 11080 event pairs, 822 based on Foata normal form. 0/1808 useless extension candidates. Maximal degree in co-relation 3810. Up to 1678 conditions per place. [2024-10-31 22:19:20,109 INFO L140 encePairwiseOnDemand]: 64/66 looper letters, 34 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2024-10-31 22:19:20,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 187 flow [2024-10-31 22:19:20,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:20,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:19:20,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 98 transitions. [2024-10-31 22:19:20,113 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-10-31 22:19:20,115 INFO L175 Difference]: Start difference. First operand has 53 places, 53 transitions, 123 flow. Second operand 3 states and 98 transitions. [2024-10-31 22:19:20,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 187 flow [2024-10-31 22:19:20,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 50 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:19:20,117 INFO L231 Difference]: Finished difference. Result has 51 places, 50 transitions, 117 flow [2024-10-31 22:19:20,118 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=51, PETRI_TRANSITIONS=50} [2024-10-31 22:19:20,118 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -7 predicate places. [2024-10-31 22:19:20,119 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 50 transitions, 117 flow [2024-10-31 22:19:20,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:20,120 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:20,120 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:20,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:19:20,121 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:20,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:20,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1703780011, now seen corresponding path program 1 times [2024-10-31 22:19:20,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:20,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975849517] [2024-10-31 22:19:20,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:20,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:20,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:20,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:20,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975849517] [2024-10-31 22:19:20,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975849517] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:20,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:20,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:19:20,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897159167] [2024-10-31 22:19:20,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:20,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:20,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:20,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:20,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:20,295 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-10-31 22:19:20,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 50 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:20,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:20,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-10-31 22:19:20,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:20,621 INFO L124 PetriNetUnfolderBase]: 739/1428 cut-off events. [2024-10-31 22:19:20,622 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-10-31 22:19:20,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1428 events. 739/1428 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 7489 event pairs, 204 based on Foata normal form. 23/1363 useless extension candidates. Maximal degree in co-relation 2683. Up to 770 conditions per place. [2024-10-31 22:19:20,633 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 52 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2024-10-31 22:19:20,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 71 transitions, 270 flow [2024-10-31 22:19:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:20,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:19:20,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2024-10-31 22:19:20,635 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6262626262626263 [2024-10-31 22:19:20,636 INFO L175 Difference]: Start difference. First operand has 51 places, 50 transitions, 117 flow. Second operand 3 states and 124 transitions. [2024-10-31 22:19:20,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 71 transitions, 270 flow [2024-10-31 22:19:20,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 71 transitions, 269 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:19:20,639 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 124 flow [2024-10-31 22:19:20,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2024-10-31 22:19:20,640 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -5 predicate places. [2024-10-31 22:19:20,640 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 124 flow [2024-10-31 22:19:20,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:20,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:20,641 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:20,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:19:20,642 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:20,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:20,643 INFO L85 PathProgramCache]: Analyzing trace with hash 329932780, now seen corresponding path program 1 times [2024-10-31 22:19:20,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:20,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428106756] [2024-10-31 22:19:20,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:20,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:20,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:20,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428106756] [2024-10-31 22:19:20,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428106756] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:20,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:20,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:20,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790833870] [2024-10-31 22:19:20,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:20,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:20,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:20,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:20,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:20,700 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-10-31 22:19:20,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:20,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:20,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-10-31 22:19:20,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:21,076 INFO L124 PetriNetUnfolderBase]: 1181/2256 cut-off events. [2024-10-31 22:19:21,076 INFO L125 PetriNetUnfolderBase]: For 224/242 co-relation queries the response was YES. [2024-10-31 22:19:21,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4406 conditions, 2256 events. 1181/2256 cut-off events. For 224/242 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 13592 event pairs, 565 based on Foata normal form. 24/2104 useless extension candidates. Maximal degree in co-relation 4395. Up to 1235 conditions per place. [2024-10-31 22:19:21,093 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 56 selfloop transitions, 2 changer transitions 0/75 dead transitions. [2024-10-31 22:19:21,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 75 transitions, 298 flow [2024-10-31 22:19:21,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:21,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:19:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-10-31 22:19:21,095 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6414141414141414 [2024-10-31 22:19:21,095 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 124 flow. Second operand 3 states and 127 transitions. [2024-10-31 22:19:21,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 75 transitions, 298 flow [2024-10-31 22:19:21,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 75 transitions, 292 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:19:21,099 INFO L231 Difference]: Finished difference. Result has 54 places, 51 transitions, 132 flow [2024-10-31 22:19:21,100 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=54, PETRI_TRANSITIONS=51} [2024-10-31 22:19:21,100 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -4 predicate places. [2024-10-31 22:19:21,101 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 51 transitions, 132 flow [2024-10-31 22:19:21,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:21,101 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:21,101 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:21,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:19:21,102 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:21,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:21,103 INFO L85 PathProgramCache]: Analyzing trace with hash -529581639, now seen corresponding path program 1 times [2024-10-31 22:19:21,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:21,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143620892] [2024-10-31 22:19:21,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:21,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:21,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:21,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:21,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143620892] [2024-10-31 22:19:21,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143620892] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:21,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:21,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:19:21,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033058509] [2024-10-31 22:19:21,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:21,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:21,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:21,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:21,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:21,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-10-31 22:19:21,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 51 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:21,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:21,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-10-31 22:19:21,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:21,535 INFO L124 PetriNetUnfolderBase]: 1071/2133 cut-off events. [2024-10-31 22:19:21,535 INFO L125 PetriNetUnfolderBase]: For 202/218 co-relation queries the response was YES. [2024-10-31 22:19:21,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4230 conditions, 2133 events. 1071/2133 cut-off events. For 202/218 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 12150 event pairs, 502 based on Foata normal form. 47/2072 useless extension candidates. Maximal degree in co-relation 4219. Up to 903 conditions per place. [2024-10-31 22:19:21,551 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 53 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2024-10-31 22:19:21,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 73 transitions, 302 flow [2024-10-31 22:19:21,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:21,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:19:21,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2024-10-31 22:19:21,554 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6212121212121212 [2024-10-31 22:19:21,554 INFO L175 Difference]: Start difference. First operand has 54 places, 51 transitions, 132 flow. Second operand 3 states and 123 transitions. [2024-10-31 22:19:21,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 73 transitions, 302 flow [2024-10-31 22:19:21,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 73 transitions, 299 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:19:21,558 INFO L231 Difference]: Finished difference. Result has 56 places, 52 transitions, 145 flow [2024-10-31 22:19:21,558 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=56, PETRI_TRANSITIONS=52} [2024-10-31 22:19:21,559 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, -2 predicate places. [2024-10-31 22:19:21,559 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 52 transitions, 145 flow [2024-10-31 22:19:21,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:21,559 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:21,559 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:21,560 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:19:21,560 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:21,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:21,560 INFO L85 PathProgramCache]: Analyzing trace with hash 960948998, now seen corresponding path program 1 times [2024-10-31 22:19:21,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:21,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140659330] [2024-10-31 22:19:21,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:21,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:21,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:21,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:21,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140659330] [2024-10-31 22:19:21,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140659330] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:21,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:21,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-31 22:19:21,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976558638] [2024-10-31 22:19:21,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:21,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:19:21,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:21,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:19:21,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:19:21,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-10-31 22:19:21,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 145 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:21,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:21,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-10-31 22:19:21,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:22,314 INFO L124 PetriNetUnfolderBase]: 1069/2029 cut-off events. [2024-10-31 22:19:22,315 INFO L125 PetriNetUnfolderBase]: For 304/317 co-relation queries the response was YES. [2024-10-31 22:19:22,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4226 conditions, 2029 events. 1069/2029 cut-off events. For 304/317 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 11243 event pairs, 470 based on Foata normal form. 0/1881 useless extension candidates. Maximal degree in co-relation 4213. Up to 1334 conditions per place. [2024-10-31 22:19:22,331 INFO L140 encePairwiseOnDemand]: 59/66 looper letters, 87 selfloop transitions, 7 changer transitions 0/110 dead transitions. [2024-10-31 22:19:22,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 110 transitions, 469 flow [2024-10-31 22:19:22,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-31 22:19:22,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-10-31 22:19:22,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 247 transitions. [2024-10-31 22:19:22,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5346320346320347 [2024-10-31 22:19:22,334 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 145 flow. Second operand 7 states and 247 transitions. [2024-10-31 22:19:22,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 110 transitions, 469 flow [2024-10-31 22:19:22,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 110 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:19:22,339 INFO L231 Difference]: Finished difference. Result has 65 places, 57 transitions, 187 flow [2024-10-31 22:19:22,339 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=187, PETRI_PLACES=65, PETRI_TRANSITIONS=57} [2024-10-31 22:19:22,340 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2024-10-31 22:19:22,340 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 57 transitions, 187 flow [2024-10-31 22:19:22,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:22,341 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:22,341 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:22,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:19:22,341 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:22,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:22,342 INFO L85 PathProgramCache]: Analyzing trace with hash 301022442, now seen corresponding path program 1 times [2024-10-31 22:19:22,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:22,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514975376] [2024-10-31 22:19:22,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:22,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:22,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:22,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:22,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:22,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514975376] [2024-10-31 22:19:22,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514975376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:22,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:22,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:22,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258821924] [2024-10-31 22:19:22,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:22,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:22,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:22,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:22,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:22,428 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-10-31 22:19:22,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 57 transitions, 187 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:22,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:22,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-10-31 22:19:22,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:22,990 INFO L124 PetriNetUnfolderBase]: 1714/3375 cut-off events. [2024-10-31 22:19:22,990 INFO L125 PetriNetUnfolderBase]: For 899/942 co-relation queries the response was YES. [2024-10-31 22:19:23,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7374 conditions, 3375 events. 1714/3375 cut-off events. For 899/942 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 21388 event pairs, 797 based on Foata normal form. 75/3295 useless extension candidates. Maximal degree in co-relation 7357. Up to 1698 conditions per place. [2024-10-31 22:19:23,021 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 69 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2024-10-31 22:19:23,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 89 transitions, 448 flow [2024-10-31 22:19:23,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:23,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:19:23,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 127 transitions. [2024-10-31 22:19:23,026 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6414141414141414 [2024-10-31 22:19:23,026 INFO L175 Difference]: Start difference. First operand has 65 places, 57 transitions, 187 flow. Second operand 3 states and 127 transitions. [2024-10-31 22:19:23,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 89 transitions, 448 flow [2024-10-31 22:19:23,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 89 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:19:23,035 INFO L231 Difference]: Finished difference. Result has 66 places, 58 transitions, 193 flow [2024-10-31 22:19:23,036 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=66, PETRI_TRANSITIONS=58} [2024-10-31 22:19:23,039 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 8 predicate places. [2024-10-31 22:19:23,039 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 58 transitions, 193 flow [2024-10-31 22:19:23,039 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:23,039 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:23,039 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:23,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:19:23,040 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:23,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:23,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1172466476, now seen corresponding path program 1 times [2024-10-31 22:19:23,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:23,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209252343] [2024-10-31 22:19:23,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:23,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:23,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:23,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:23,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209252343] [2024-10-31 22:19:23,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209252343] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:23,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:23,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:23,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703958983] [2024-10-31 22:19:23,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:23,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:23,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:23,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:23,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:23,115 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-10-31 22:19:23,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 58 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:23,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:23,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-10-31 22:19:23,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:23,594 INFO L124 PetriNetUnfolderBase]: 1328/2565 cut-off events. [2024-10-31 22:19:23,594 INFO L125 PetriNetUnfolderBase]: For 734/753 co-relation queries the response was YES. [2024-10-31 22:19:23,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5803 conditions, 2565 events. 1328/2565 cut-off events. For 734/753 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 14608 event pairs, 487 based on Foata normal form. 91/2601 useless extension candidates. Maximal degree in co-relation 5785. Up to 1421 conditions per place. [2024-10-31 22:19:23,623 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 54 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2024-10-31 22:19:23,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 74 transitions, 356 flow [2024-10-31 22:19:23,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:23,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:19:23,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 115 transitions. [2024-10-31 22:19:23,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5808080808080808 [2024-10-31 22:19:23,627 INFO L175 Difference]: Start difference. First operand has 66 places, 58 transitions, 193 flow. Second operand 3 states and 115 transitions. [2024-10-31 22:19:23,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 74 transitions, 356 flow [2024-10-31 22:19:23,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 74 transitions, 347 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-31 22:19:23,635 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 200 flow [2024-10-31 22:19:23,636 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-10-31 22:19:23,637 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-10-31 22:19:23,638 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 200 flow [2024-10-31 22:19:23,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:23,638 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:23,639 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:23,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-31 22:19:23,639 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:23,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:23,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1637209546, now seen corresponding path program 1 times [2024-10-31 22:19:23,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:23,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794685889] [2024-10-31 22:19:23,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:23,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:23,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:23,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:23,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794685889] [2024-10-31 22:19:23,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794685889] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:23,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:23,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:23,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545420569] [2024-10-31 22:19:23,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:23,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:23,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:23,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:23,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:19:23,768 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-10-31 22:19:23,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:23,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:23,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-10-31 22:19:23,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:24,084 INFO L124 PetriNetUnfolderBase]: 804/1812 cut-off events. [2024-10-31 22:19:24,084 INFO L125 PetriNetUnfolderBase]: For 678/678 co-relation queries the response was YES. [2024-10-31 22:19:24,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4147 conditions, 1812 events. 804/1812 cut-off events. For 678/678 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 9897 event pairs, 255 based on Foata normal form. 92/1855 useless extension candidates. Maximal degree in co-relation 4129. Up to 821 conditions per place. [2024-10-31 22:19:24,100 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 48 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2024-10-31 22:19:24,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 352 flow [2024-10-31 22:19:24,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:24,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:19:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-10-31 22:19:24,104 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5707070707070707 [2024-10-31 22:19:24,105 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 200 flow. Second operand 3 states and 113 transitions. [2024-10-31 22:19:24,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 352 flow [2024-10-31 22:19:24,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 346 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:19:24,109 INFO L231 Difference]: Finished difference. Result has 68 places, 58 transitions, 202 flow [2024-10-31 22:19:24,110 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=68, PETRI_TRANSITIONS=58} [2024-10-31 22:19:24,110 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 10 predicate places. [2024-10-31 22:19:24,111 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 58 transitions, 202 flow [2024-10-31 22:19:24,111 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:24,111 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:24,111 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:24,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-31 22:19:24,111 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:24,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:24,112 INFO L85 PathProgramCache]: Analyzing trace with hash -956769914, now seen corresponding path program 1 times [2024-10-31 22:19:24,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:24,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613443710] [2024-10-31 22:19:24,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:24,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:24,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:24,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:24,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613443710] [2024-10-31 22:19:24,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613443710] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:24,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:24,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:19:24,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989385615] [2024-10-31 22:19:24,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:24,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:19:24,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:24,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:19:24,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:19:24,492 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-10-31 22:19:24,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 58 transitions, 202 flow. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:24,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:24,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-10-31 22:19:24,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:25,172 INFO L124 PetriNetUnfolderBase]: 1473/3155 cut-off events. [2024-10-31 22:19:25,176 INFO L125 PetriNetUnfolderBase]: For 1353/1358 co-relation queries the response was YES. [2024-10-31 22:19:25,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7579 conditions, 3155 events. 1473/3155 cut-off events. For 1353/1358 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 17799 event pairs, 766 based on Foata normal form. 3/3018 useless extension candidates. Maximal degree in co-relation 7561. Up to 1308 conditions per place. [2024-10-31 22:19:25,203 INFO L140 encePairwiseOnDemand]: 63/66 looper letters, 90 selfloop transitions, 3 changer transitions 0/111 dead transitions. [2024-10-31 22:19:25,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 111 transitions, 578 flow [2024-10-31 22:19:25,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:19:25,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:19:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 173 transitions. [2024-10-31 22:19:25,205 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6553030303030303 [2024-10-31 22:19:25,205 INFO L175 Difference]: Start difference. First operand has 68 places, 58 transitions, 202 flow. Second operand 4 states and 173 transitions. [2024-10-31 22:19:25,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 111 transitions, 578 flow [2024-10-31 22:19:25,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 111 transitions, 566 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:19:25,211 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 214 flow [2024-10-31 22:19:25,212 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2024-10-31 22:19:25,212 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2024-10-31 22:19:25,213 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 214 flow [2024-10-31 22:19:25,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:25,213 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:25,213 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:25,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-31 22:19:25,214 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:25,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:25,214 INFO L85 PathProgramCache]: Analyzing trace with hash -805603092, now seen corresponding path program 1 times [2024-10-31 22:19:25,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:25,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893136509] [2024-10-31 22:19:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:25,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:25,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:25,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:25,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:25,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893136509] [2024-10-31 22:19:25,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893136509] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:25,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530468331] [2024-10-31 22:19:25,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:25,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:25,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:25,275 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:25,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:19:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:25,397 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-10-31 22:19:25,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:25,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:19:25,460 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:19:25,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530468331] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:25,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-31 22:19:25,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2024-10-31 22:19:25,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075369977] [2024-10-31 22:19:25,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:25,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:19:25,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:25,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:19:25,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:19:25,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-10-31 22:19:25,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:25,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:25,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-10-31 22:19:25,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:25,873 INFO L124 PetriNetUnfolderBase]: 1461/3120 cut-off events. [2024-10-31 22:19:25,873 INFO L125 PetriNetUnfolderBase]: For 1223/1232 co-relation queries the response was YES. [2024-10-31 22:19:25,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7366 conditions, 3120 events. 1461/3120 cut-off events. For 1223/1232 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 17943 event pairs, 1152 based on Foata normal form. 13/3026 useless extension candidates. Maximal degree in co-relation 7345. Up to 2476 conditions per place. [2024-10-31 22:19:25,893 INFO L140 encePairwiseOnDemand]: 64/66 looper letters, 38 selfloop transitions, 1 changer transitions 3/59 dead transitions. [2024-10-31 22:19:25,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 294 flow [2024-10-31 22:19:25,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:19:25,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:19:25,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2024-10-31 22:19:25,896 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-10-31 22:19:25,896 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 214 flow. Second operand 3 states and 99 transitions. [2024-10-31 22:19:25,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 294 flow [2024-10-31 22:19:25,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 59 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-31 22:19:25,900 INFO L231 Difference]: Finished difference. Result has 72 places, 56 transitions, 204 flow [2024-10-31 22:19:25,901 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=72, PETRI_TRANSITIONS=56} [2024-10-31 22:19:25,902 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2024-10-31 22:19:25,903 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 56 transitions, 204 flow [2024-10-31 22:19:25,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:25,904 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:25,904 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:25,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-31 22:19:26,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:26,108 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:26,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:26,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1359728003, now seen corresponding path program 1 times [2024-10-31 22:19:26,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:26,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299724900] [2024-10-31 22:19:26,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:26,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:26,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-31 22:19:26,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943013569] [2024-10-31 22:19:26,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:26,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:26,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:26,171 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:26,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:19:26,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:26,323 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-10-31 22:19:26,325 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:26,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:26,551 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-31 22:19:26,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:26,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299724900] [2024-10-31 22:19:26,552 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-31 22:19:26,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943013569] [2024-10-31 22:19:26,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943013569] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:26,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:26,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:19:26,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676982327] [2024-10-31 22:19:26,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:26,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:19:26,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:26,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:19:26,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:19:26,572 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-10-31 22:19:26,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 56 transitions, 204 flow. Second operand has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:26,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:26,573 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-10-31 22:19:26,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:27,047 INFO L124 PetriNetUnfolderBase]: 1014/2199 cut-off events. [2024-10-31 22:19:27,047 INFO L125 PetriNetUnfolderBase]: For 891/893 co-relation queries the response was YES. [2024-10-31 22:19:27,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5206 conditions, 2199 events. 1014/2199 cut-off events. For 891/893 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 10823 event pairs, 315 based on Foata normal form. 18/2158 useless extension candidates. Maximal degree in co-relation 5183. Up to 1159 conditions per place. [2024-10-31 22:19:27,063 INFO L140 encePairwiseOnDemand]: 62/66 looper letters, 58 selfloop transitions, 3 changer transitions 3/81 dead transitions. [2024-10-31 22:19:27,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 81 transitions, 417 flow [2024-10-31 22:19:27,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:19:27,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:19:27,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2024-10-31 22:19:27,065 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.571969696969697 [2024-10-31 22:19:27,065 INFO L175 Difference]: Start difference. First operand has 72 places, 56 transitions, 204 flow. Second operand 4 states and 151 transitions. [2024-10-31 22:19:27,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 81 transitions, 417 flow [2024-10-31 22:19:27,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:19:27,070 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 213 flow [2024-10-31 22:19:27,071 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=213, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2024-10-31 22:19:27,072 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 15 predicate places. [2024-10-31 22:19:27,072 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 213 flow [2024-10-31 22:19:27,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.5) internal successors, (110), 4 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:27,072 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:27,073 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:27,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-31 22:19:27,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-31 22:19:27,278 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:27,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:27,278 INFO L85 PathProgramCache]: Analyzing trace with hash -504612373, now seen corresponding path program 1 times [2024-10-31 22:19:27,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:27,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140450586] [2024-10-31 22:19:27,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:27,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:27,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:28,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:28,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:28,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140450586] [2024-10-31 22:19:28,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140450586] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:28,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:28,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-31 22:19:28,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708794756] [2024-10-31 22:19:28,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:28,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:19:28,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:28,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:19:28,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:19:29,045 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 66 [2024-10-31 22:19:29,045 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 213 flow. Second operand has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 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) [2024-10-31 22:19:29,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:29,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 66 [2024-10-31 22:19:29,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:30,351 INFO L124 PetriNetUnfolderBase]: 1202/2580 cut-off events. [2024-10-31 22:19:30,352 INFO L125 PetriNetUnfolderBase]: For 1192/1196 co-relation queries the response was YES. [2024-10-31 22:19:30,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6228 conditions, 2580 events. 1202/2580 cut-off events. For 1192/1196 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13454 event pairs, 384 based on Foata normal form. 0/2506 useless extension candidates. Maximal degree in co-relation 6203. Up to 895 conditions per place. [2024-10-31 22:19:30,370 INFO L140 encePairwiseOnDemand]: 54/66 looper letters, 108 selfloop transitions, 15 changer transitions 14/154 dead transitions. [2024-10-31 22:19:30,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 154 transitions, 829 flow [2024-10-31 22:19:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-31 22:19:30,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-10-31 22:19:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 401 transitions. [2024-10-31 22:19:30,373 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5063131313131313 [2024-10-31 22:19:30,373 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 213 flow. Second operand 12 states and 401 transitions. [2024-10-31 22:19:30,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 154 transitions, 829 flow [2024-10-31 22:19:30,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 154 transitions, 821 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-31 22:19:30,379 INFO L231 Difference]: Finished difference. Result has 85 places, 65 transitions, 299 flow [2024-10-31 22:19:30,380 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=207, 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=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=299, PETRI_PLACES=85, PETRI_TRANSITIONS=65} [2024-10-31 22:19:30,381 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 27 predicate places. [2024-10-31 22:19:30,381 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 65 transitions, 299 flow [2024-10-31 22:19:30,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 24.818181818181817) internal successors, (273), 11 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) [2024-10-31 22:19:30,382 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:30,382 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:30,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-31 22:19:30,383 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:30,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:30,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1189847007, now seen corresponding path program 1 times [2024-10-31 22:19:30,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:30,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315985694] [2024-10-31 22:19:30,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:30,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:30,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:30,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:30,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:30,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [315985694] [2024-10-31 22:19:30,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [315985694] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:30,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128750904] [2024-10-31 22:19:30,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:30,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:30,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:30,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:30,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:19:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:30,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-10-31 22:19:30,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:31,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:19:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:32,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128750904] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:19:32,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:19:32,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2024-10-31 22:19:32,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224270950] [2024-10-31 22:19:32,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:19:32,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-31 22:19:32,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:32,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-31 22:19:32,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-10-31 22:19:33,037 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 66 [2024-10-31 22:19:33,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 65 transitions, 299 flow. Second operand has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:33,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:33,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 66 [2024-10-31 22:19:33,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:33,788 INFO L124 PetriNetUnfolderBase]: 1368/2899 cut-off events. [2024-10-31 22:19:33,788 INFO L125 PetriNetUnfolderBase]: For 1658/1660 co-relation queries the response was YES. [2024-10-31 22:19:33,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7333 conditions, 2899 events. 1368/2899 cut-off events. For 1658/1660 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 14224 event pairs, 842 based on Foata normal form. 54/2873 useless extension candidates. Maximal degree in co-relation 7305. Up to 1611 conditions per place. [2024-10-31 22:19:33,812 INFO L140 encePairwiseOnDemand]: 61/66 looper letters, 59 selfloop transitions, 7 changer transitions 0/80 dead transitions. [2024-10-31 22:19:33,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 80 transitions, 483 flow [2024-10-31 22:19:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:19:33,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:19:33,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 133 transitions. [2024-10-31 22:19:33,814 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5037878787878788 [2024-10-31 22:19:33,814 INFO L175 Difference]: Start difference. First operand has 85 places, 65 transitions, 299 flow. Second operand 4 states and 133 transitions. [2024-10-31 22:19:33,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 80 transitions, 483 flow [2024-10-31 22:19:33,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 80 transitions, 473 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-31 22:19:33,821 INFO L231 Difference]: Finished difference. Result has 84 places, 63 transitions, 301 flow [2024-10-31 22:19:33,821 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=84, PETRI_TRANSITIONS=63} [2024-10-31 22:19:33,822 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 26 predicate places. [2024-10-31 22:19:33,822 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 63 transitions, 301 flow [2024-10-31 22:19:33,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 27.0) internal successors, (324), 12 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:33,823 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:33,823 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:33,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-31 22:19:34,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-10-31 22:19:34,024 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:34,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:34,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1361029099, now seen corresponding path program 1 times [2024-10-31 22:19:34,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:34,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064806522] [2024-10-31 22:19:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:34,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:34,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:34,177 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:19:34,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:34,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064806522] [2024-10-31 22:19:34,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064806522] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:19:34,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:19:34,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-31 22:19:34,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563723538] [2024-10-31 22:19:34,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:19:34,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-31 22:19:34,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:34,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-31 22:19:34,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-31 22:19:34,187 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-10-31 22:19:34,188 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 63 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:34,188 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:34,188 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-10-31 22:19:34,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:19:34,725 INFO L124 PetriNetUnfolderBase]: 1428/2962 cut-off events. [2024-10-31 22:19:34,725 INFO L125 PetriNetUnfolderBase]: For 1975/1975 co-relation queries the response was YES. [2024-10-31 22:19:34,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7624 conditions, 2962 events. 1428/2962 cut-off events. For 1975/1975 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 14419 event pairs, 714 based on Foata normal form. 0/2882 useless extension candidates. Maximal degree in co-relation 7595. Up to 1757 conditions per place. [2024-10-31 22:19:34,745 INFO L140 encePairwiseOnDemand]: 60/66 looper letters, 76 selfloop transitions, 11 changer transitions 5/104 dead transitions. [2024-10-31 22:19:34,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 104 transitions, 644 flow [2024-10-31 22:19:34,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:19:34,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:19:34,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-10-31 22:19:34,747 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5025252525252525 [2024-10-31 22:19:34,747 INFO L175 Difference]: Start difference. First operand has 84 places, 63 transitions, 301 flow. Second operand 6 states and 199 transitions. [2024-10-31 22:19:34,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 104 transitions, 644 flow [2024-10-31 22:19:34,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 104 transitions, 632 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-10-31 22:19:34,754 INFO L231 Difference]: Finished difference. Result has 85 places, 60 transitions, 312 flow [2024-10-31 22:19:34,755 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=66, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=312, PETRI_PLACES=85, PETRI_TRANSITIONS=60} [2024-10-31 22:19:34,755 INFO L277 CegarLoopForPetriNet]: 58 programPoint places, 27 predicate places. [2024-10-31 22:19:34,755 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 60 transitions, 312 flow [2024-10-31 22:19:34,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:34,756 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:19:34,756 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:19:34,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-31 22:19:34,756 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 14 more)] === [2024-10-31 22:19:34,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:19:34,757 INFO L85 PathProgramCache]: Analyzing trace with hash -2079303288, now seen corresponding path program 1 times [2024-10-31 22:19:34,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:19:34,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839033069] [2024-10-31 22:19:34,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:34,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:19:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:35,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:19:35,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839033069] [2024-10-31 22:19:35,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839033069] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:19:35,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305989604] [2024-10-31 22:19:35,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:19:35,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:19:35,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:19:35,245 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:19:35,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bef43bdc-ed0e-49d7-a51e-913bae04400c/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-31 22:19:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:19:35,472 INFO L255 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-31 22:19:35,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:19:35,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:35,950 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:19:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:19:37,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305989604] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:19:37,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:19:37,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2024-10-31 22:19:37,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056097643] [2024-10-31 22:19:37,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:19:37,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-31 22:19:37,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:19:37,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-31 22:19:37,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-10-31 22:19:37,522 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 66 [2024-10-31 22:19:37,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 60 transitions, 312 flow. Second operand has 11 states, 11 states have (on average 31.272727272727273) internal successors, (344), 11 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:19:37,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:19:37,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 66 [2024-10-31 22:19:37,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand