./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX --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 bbb47797d2c6a4d5e961c4dfd7a8e6f4ff79c632e04c289068b1b9e8cca736fa --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:28:23,342 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:28:23,488 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:28:23,496 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:28:23,500 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:28:23,555 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:28:23,556 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:28:23,556 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:28:23,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:28:23,558 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:28:23,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:28:23,559 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:28:23,560 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:28:23,560 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:28:23,561 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:28:23,561 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:28:23,562 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:28:23,563 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:28:23,563 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:28:23,564 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:28:23,564 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:28:23,565 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:28:23,569 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:28:23,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:28:23,570 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:28:23,570 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:28:23,570 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:28:23,571 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:28:23,571 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:28:23,572 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:28:23,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:28:23,576 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:28:23,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:28:23,577 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:28:23,577 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:28:23,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:28:23,578 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:28:23,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:28:23,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:28:23,583 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:28:23,583 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:28:23,584 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:28:23,584 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_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bbb47797d2c6a4d5e961c4dfd7a8e6f4ff79c632e04c289068b1b9e8cca736fa [2024-11-08 17:28:23,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:28:23,971 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:28:23,978 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:28:23,983 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:28:24,003 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:28:24,005 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i Unable to find full path for "g++" [2024-11-08 17:28:26,490 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:28:26,899 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:28:26,903 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/sv-benchmarks/c/goblint-regression/09-regions_09-arraylist.i [2024-11-08 17:28:26,946 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/data/f81d3fb5a/8a3c67c0fbfa46799c0259b1f357155a/FLAG99502cad5 [2024-11-08 17:28:26,969 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/data/f81d3fb5a/8a3c67c0fbfa46799c0259b1f357155a [2024-11-08 17:28:26,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:28:26,974 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:28:26,976 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:28:26,976 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:28:26,984 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:28:26,985 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:28:26" (1/1) ... [2024-11-08 17:28:26,986 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fd62544 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:26, skipping insertion in model container [2024-11-08 17:28:26,987 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:28:26" (1/1) ... [2024-11-08 17:28:27,064 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:28:27,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:28:28,003 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:28:28,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:28:28,195 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:28:28,196 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:28 WrapperNode [2024-11-08 17:28:28,196 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:28:28,198 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:28:28,198 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:28:28,198 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:28:28,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:28" (1/1) ... [2024-11-08 17:28:28,240 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:28" (1/1) ... [2024-11-08 17:28:28,303 INFO L138 Inliner]: procedures = 372, calls = 43, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 132 [2024-11-08 17:28:28,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:28:28,307 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:28:28,308 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:28:28,308 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:28:28,323 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:28" (1/1) ... [2024-11-08 17:28:28,323 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:28" (1/1) ... [2024-11-08 17:28:28,329 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:28" (1/1) ... [2024-11-08 17:28:28,377 INFO L175 MemorySlicer]: Split 33 memory accesses to 3 slices as follows [5, 14, 14]. 42 percent of accesses are in the largest equivalence class. The 15 initializations are split as follows [5, 10, 0]. The 11 writes are split as follows [0, 1, 10]. [2024-11-08 17:28:28,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:28" (1/1) ... [2024-11-08 17:28:28,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:28" (1/1) ... [2024-11-08 17:28:28,397 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:28" (1/1) ... [2024-11-08 17:28:28,405 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:28" (1/1) ... [2024-11-08 17:28:28,408 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:28" (1/1) ... [2024-11-08 17:28:28,410 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:28" (1/1) ... [2024-11-08 17:28:28,415 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:28:28,416 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:28:28,416 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:28:28,417 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:28:28,418 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:28" (1/1) ... [2024-11-08 17:28:28,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:28:28,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:28:28,498 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:28:28,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:28:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 17:28:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 17:28:28,555 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 17:28:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-08 17:28:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-08 17:28:28,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-08 17:28:28,558 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 17:28:28,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-08 17:28:28,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-08 17:28:28,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-08 17:28:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-08 17:28:28,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-08 17:28:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-08 17:28:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 17:28:28,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:28:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:28:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 17:28:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 17:28:28,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 17:28:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-08 17:28:28,562 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-08 17:28:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 17:28:28,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 17:28:28,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-08 17:28:28,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:28:28,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:28:28,566 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 17:28:28,806 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:28:28,809 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:28:29,340 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 17:28:29,341 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:28:29,759 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:28:29,760 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-08 17:28:29,761 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:28:29 BoogieIcfgContainer [2024-11-08 17:28:29,762 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:28:29,766 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:28:29,766 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:28:29,771 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:28:29,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:28:26" (1/3) ... [2024-11-08 17:28:29,772 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f492c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:28:29, skipping insertion in model container [2024-11-08 17:28:29,772 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:28:28" (2/3) ... [2024-11-08 17:28:29,773 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f492c32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:28:29, skipping insertion in model container [2024-11-08 17:28:29,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:28:29" (3/3) ... [2024-11-08 17:28:29,776 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_09-arraylist.i [2024-11-08 17:28:29,799 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:28:29,799 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2024-11-08 17:28:29,800 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 17:28:29,894 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 17:28:29,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 76 places, 74 transitions, 152 flow [2024-11-08 17:28:30,012 INFO L124 PetriNetUnfolderBase]: 2/73 cut-off events. [2024-11-08 17:28:30,012 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:28:30,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 73 events. 2/73 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 285 event pairs, 0 based on Foata normal form. 0/34 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-08 17:28:30,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 76 places, 74 transitions, 152 flow [2024-11-08 17:28:30,023 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 73 transitions, 149 flow [2024-11-08 17:28:30,041 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:28:30,049 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;@40fac0b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:28:30,050 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-08 17:28:30,056 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 17:28:30,056 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2024-11-08 17:28:30,056 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:28:30,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:28:30,057 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:28:30,058 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:28:30,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:30,065 INFO L85 PathProgramCache]: Analyzing trace with hash 12756434, now seen corresponding path program 1 times [2024-11-08 17:28:30,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:30,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320406262] [2024-11-08 17:28:30,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:30,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:30,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:30,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:30,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320406262] [2024-11-08 17:28:30,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320406262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:28:30,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:28:30,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:28:30,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693271709] [2024-11-08 17:28:30,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:28:30,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:28:30,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:30,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:28:30,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:28:30,626 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 42 out of 74 [2024-11-08 17:28:30,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:30,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:28:30,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 42 of 74 [2024-11-08 17:28:30,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:28:30,905 INFO L124 PetriNetUnfolderBase]: 65/265 cut-off events. [2024-11-08 17:28:30,906 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 17:28:30,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 265 events. 65/265 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1370 event pairs, 63 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 377. Up to 151 conditions per place. [2024-11-08 17:28:30,916 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 24 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2024-11-08 17:28:30,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 69 transitions, 197 flow [2024-11-08 17:28:30,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:28:30,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:28:30,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 158 transitions. [2024-11-08 17:28:30,935 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7117117117117117 [2024-11-08 17:28:30,938 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 149 flow. Second operand 3 states and 158 transitions. [2024-11-08 17:28:30,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 69 transitions, 197 flow [2024-11-08 17:28:30,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 69 transitions, 196 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:28:30,951 INFO L231 Difference]: Finished difference. Result has 72 places, 69 transitions, 148 flow [2024-11-08 17:28:30,954 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=72, PETRI_TRANSITIONS=69} [2024-11-08 17:28:30,960 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -3 predicate places. [2024-11-08 17:28:30,960 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 69 transitions, 148 flow [2024-11-08 17:28:30,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:30,962 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:28:30,962 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2024-11-08 17:28:30,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 17:28:30,963 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:28:30,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:30,964 INFO L85 PathProgramCache]: Analyzing trace with hash 12756435, now seen corresponding path program 1 times [2024-11-08 17:28:30,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:30,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512248276] [2024-11-08 17:28:30,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:30,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:31,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:31,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:31,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512248276] [2024-11-08 17:28:31,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512248276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:28:31,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:28:31,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:28:31,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449113573] [2024-11-08 17:28:31,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:28:31,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:28:31,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:31,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:28:31,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:28:31,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 74 [2024-11-08 17:28:31,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 69 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:31,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:28:31,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 74 [2024-11-08 17:28:31,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:28:31,562 INFO L124 PetriNetUnfolderBase]: 65/261 cut-off events. [2024-11-08 17:28:31,566 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-08 17:28:31,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 422 conditions, 261 events. 65/261 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1349 event pairs, 63 based on Foata normal form. 4/209 useless extension candidates. Maximal degree in co-relation 388. Up to 151 conditions per place. [2024-11-08 17:28:31,569 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 22 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2024-11-08 17:28:31,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 192 flow [2024-11-08 17:28:31,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:28:31,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:28:31,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 162 transitions. [2024-11-08 17:28:31,575 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7297297297297297 [2024-11-08 17:28:31,577 INFO L175 Difference]: Start difference. First operand has 72 places, 69 transitions, 148 flow. Second operand 3 states and 162 transitions. [2024-11-08 17:28:31,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 192 flow [2024-11-08 17:28:31,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 65 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:28:31,580 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 140 flow [2024-11-08 17:28:31,581 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2024-11-08 17:28:31,583 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2024-11-08 17:28:31,584 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 140 flow [2024-11-08 17:28:31,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:31,584 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:28:31,585 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-08 17:28:31,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 17:28:31,585 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:28:31,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:31,589 INFO L85 PathProgramCache]: Analyzing trace with hash -625957321, now seen corresponding path program 1 times [2024-11-08 17:28:31,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:31,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586969112] [2024-11-08 17:28:31,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:31,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:31,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:32,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:32,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:32,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586969112] [2024-11-08 17:28:32,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586969112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:28:32,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:28:32,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:28:32,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200243672] [2024-11-08 17:28:32,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:28:32,050 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:28:32,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:32,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:28:32,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:28:32,399 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 74 [2024-11-08 17:28:32,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:32,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:28:32,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 74 [2024-11-08 17:28:32,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:28:32,712 INFO L124 PetriNetUnfolderBase]: 82/321 cut-off events. [2024-11-08 17:28:32,712 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-08 17:28:32,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 321 events. 82/321 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1649 event pairs, 80 based on Foata normal form. 3/254 useless extension candidates. Maximal degree in co-relation 480. Up to 195 conditions per place. [2024-11-08 17:28:32,720 INFO L140 encePairwiseOnDemand]: 62/74 looper letters, 35 selfloop transitions, 6 changer transitions 0/72 dead transitions. [2024-11-08 17:28:32,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 244 flow [2024-11-08 17:28:32,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:28:32,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-08 17:28:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 191 transitions. [2024-11-08 17:28:32,724 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6452702702702703 [2024-11-08 17:28:32,728 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 140 flow. Second operand 4 states and 191 transitions. [2024-11-08 17:28:32,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 244 flow [2024-11-08 17:28:32,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:28:32,735 INFO L231 Difference]: Finished difference. Result has 71 places, 70 transitions, 186 flow [2024-11-08 17:28:32,735 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=186, PETRI_PLACES=71, PETRI_TRANSITIONS=70} [2024-11-08 17:28:32,736 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2024-11-08 17:28:32,737 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 70 transitions, 186 flow [2024-11-08 17:28:32,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 36.8) internal successors, (184), 5 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:32,737 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:28:32,739 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:28:32,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 17:28:32,739 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:28:32,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:32,741 INFO L85 PathProgramCache]: Analyzing trace with hash 699690407, now seen corresponding path program 1 times [2024-11-08 17:28:32,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:32,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546122693] [2024-11-08 17:28:32,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:32,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:33,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:33,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546122693] [2024-11-08 17:28:33,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546122693] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:28:33,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:28:33,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:28:33,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289636204] [2024-11-08 17:28:33,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:28:33,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:28:33,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:33,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:28:33,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:28:33,659 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 39 out of 74 [2024-11-08 17:28:33,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 40.285714285714285) internal successors, (282), 7 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:33,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:28:33,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 39 of 74 [2024-11-08 17:28:33,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:28:33,929 INFO L124 PetriNetUnfolderBase]: 65/274 cut-off events. [2024-11-08 17:28:33,929 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-08 17:28:33,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 274 events. 65/274 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1324 event pairs, 63 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 425. Up to 148 conditions per place. [2024-11-08 17:28:33,932 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 23 selfloop transitions, 11 changer transitions 0/68 dead transitions. [2024-11-08 17:28:33,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 68 transitions, 250 flow [2024-11-08 17:28:33,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:28:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:28:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 304 transitions. [2024-11-08 17:28:33,936 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5868725868725869 [2024-11-08 17:28:33,936 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 186 flow. Second operand 7 states and 304 transitions. [2024-11-08 17:28:33,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 68 transitions, 250 flow [2024-11-08 17:28:33,938 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 248 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:28:33,940 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 202 flow [2024-11-08 17:28:33,940 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=202, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2024-11-08 17:28:33,941 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -1 predicate places. [2024-11-08 17:28:33,941 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 202 flow [2024-11-08 17:28:33,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 40.285714285714285) internal successors, (282), 7 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:33,942 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:28:33,942 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:28:33,942 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 17:28:33,943 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:28:33,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:33,944 INFO L85 PathProgramCache]: Analyzing trace with hash 699690408, now seen corresponding path program 1 times [2024-11-08 17:28:33,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:33,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112516179] [2024-11-08 17:28:33,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:33,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:34,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:34,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:34,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112516179] [2024-11-08 17:28:34,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112516179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:28:34,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:28:34,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:28:34,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242430871] [2024-11-08 17:28:34,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:28:34,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:28:34,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:34,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:28:34,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:28:35,060 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 74 [2024-11-08 17:28:35,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:35,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:28:35,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 74 [2024-11-08 17:28:35,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:28:35,319 INFO L124 PetriNetUnfolderBase]: 65/270 cut-off events. [2024-11-08 17:28:35,319 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-08 17:28:35,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 270 events. 65/270 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1300 event pairs, 63 based on Foata normal form. 2/219 useless extension candidates. Maximal degree in co-relation 406. Up to 148 conditions per place. [2024-11-08 17:28:35,322 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 22 selfloop transitions, 11 changer transitions 0/66 dead transitions. [2024-11-08 17:28:35,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 66 transitions, 264 flow [2024-11-08 17:28:35,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 17:28:35,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-08 17:28:35,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 282 transitions. [2024-11-08 17:28:35,325 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5444015444015444 [2024-11-08 17:28:35,325 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 202 flow. Second operand 7 states and 282 transitions. [2024-11-08 17:28:35,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 66 transitions, 264 flow [2024-11-08 17:28:35,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 242 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:28:35,329 INFO L231 Difference]: Finished difference. Result has 72 places, 66 transitions, 198 flow [2024-11-08 17:28:35,330 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=198, PETRI_PLACES=72, PETRI_TRANSITIONS=66} [2024-11-08 17:28:35,330 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -3 predicate places. [2024-11-08 17:28:35,331 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 66 transitions, 198 flow [2024-11-08 17:28:35,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.285714285714285) internal successors, (261), 7 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:35,332 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:28:35,332 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:28:35,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 17:28:35,332 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:28:35,333 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:35,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1907369209, now seen corresponding path program 1 times [2024-11-08 17:28:35,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:35,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195824181] [2024-11-08 17:28:35,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:35,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:35,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:35,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:35,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195824181] [2024-11-08 17:28:35,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195824181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:28:35,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:28:35,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:28:35,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103901715] [2024-11-08 17:28:35,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:28:35,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:28:35,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:35,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:28:35,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:28:35,704 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 74 [2024-11-08 17:28:35,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 66 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:35,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:28:35,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 74 [2024-11-08 17:28:35,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:28:35,897 INFO L124 PetriNetUnfolderBase]: 65/268 cut-off events. [2024-11-08 17:28:35,898 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-08 17:28:35,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 471 conditions, 268 events. 65/268 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1280 event pairs, 63 based on Foata normal form. 2/219 useless extension candidates. Maximal degree in co-relation 405. Up to 150 conditions per place. [2024-11-08 17:28:35,902 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 22 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2024-11-08 17:28:35,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 65 transitions, 262 flow [2024-11-08 17:28:35,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:28:35,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:28:35,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 234 transitions. [2024-11-08 17:28:35,904 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6324324324324324 [2024-11-08 17:28:35,905 INFO L175 Difference]: Start difference. First operand has 72 places, 66 transitions, 198 flow. Second operand 5 states and 234 transitions. [2024-11-08 17:28:35,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 65 transitions, 262 flow [2024-11-08 17:28:35,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 65 transitions, 240 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-08 17:28:35,911 INFO L231 Difference]: Finished difference. Result has 69 places, 65 transitions, 196 flow [2024-11-08 17:28:35,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=196, PETRI_PLACES=69, PETRI_TRANSITIONS=65} [2024-11-08 17:28:35,912 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -6 predicate places. [2024-11-08 17:28:35,914 INFO L471 AbstractCegarLoop]: Abstraction has has 69 places, 65 transitions, 196 flow [2024-11-08 17:28:35,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 43.0) internal successors, (215), 5 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:35,915 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:28:35,916 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:28:35,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 17:28:35,916 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:28:35,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:35,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1907369208, now seen corresponding path program 1 times [2024-11-08 17:28:35,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:35,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965249038] [2024-11-08 17:28:35,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:35,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:36,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:36,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:36,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965249038] [2024-11-08 17:28:36,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965249038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:28:36,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:28:36,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:28:36,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622658306] [2024-11-08 17:28:36,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:28:36,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:28:36,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:36,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:28:36,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:28:36,585 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 74 [2024-11-08 17:28:36,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 65 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:36,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:28:36,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 74 [2024-11-08 17:28:36,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:28:36,790 INFO L124 PetriNetUnfolderBase]: 65/266 cut-off events. [2024-11-08 17:28:36,791 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-08 17:28:36,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 266 events. 65/266 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1276 event pairs, 63 based on Foata normal form. 2/217 useless extension candidates. Maximal degree in co-relation 403. Up to 150 conditions per place. [2024-11-08 17:28:36,793 INFO L140 encePairwiseOnDemand]: 67/74 looper letters, 20 selfloop transitions, 11 changer transitions 0/64 dead transitions. [2024-11-08 17:28:36,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 64 transitions, 256 flow [2024-11-08 17:28:36,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:28:36,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-08 17:28:36,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 242 transitions. [2024-11-08 17:28:36,795 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.654054054054054 [2024-11-08 17:28:36,795 INFO L175 Difference]: Start difference. First operand has 69 places, 65 transitions, 196 flow. Second operand 5 states and 242 transitions. [2024-11-08 17:28:36,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 64 transitions, 256 flow [2024-11-08 17:28:36,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 64 transitions, 234 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:28:36,798 INFO L231 Difference]: Finished difference. Result has 68 places, 64 transitions, 194 flow [2024-11-08 17:28:36,799 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=194, PETRI_PLACES=68, PETRI_TRANSITIONS=64} [2024-11-08 17:28:36,800 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2024-11-08 17:28:36,800 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 64 transitions, 194 flow [2024-11-08 17:28:36,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:36,801 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:28:36,801 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:28:36,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 17:28:36,801 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:28:36,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:36,802 INFO L85 PathProgramCache]: Analyzing trace with hash -403245140, now seen corresponding path program 1 times [2024-11-08 17:28:36,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:36,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418919971] [2024-11-08 17:28:36,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:36,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:38,197 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:38,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:38,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418919971] [2024-11-08 17:28:38,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418919971] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:28:38,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94714496] [2024-11-08 17:28:38,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:38,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:28:38,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:28:38,202 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:28:38,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:28:38,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:38,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-08 17:28:38,461 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:28:38,702 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-08 17:28:38,706 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-08 17:28:38,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:28:38,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:28:38,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:28:38,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:28:39,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:28:39,248 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:28:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:39,328 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:28:39,703 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:28:39,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:28:39,832 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:28:39,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-08 17:28:39,986 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:39,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94714496] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:28:39,987 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:28:39,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 4] total 18 [2024-11-08 17:28:39,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893717958] [2024-11-08 17:28:39,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:28:39,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 17:28:39,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:39,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 17:28:39,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-11-08 17:28:44,029 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 74 [2024-11-08 17:28:44,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 64 transitions, 194 flow. Second operand has 20 states, 20 states have (on average 35.1) internal successors, (702), 20 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:44,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:28:44,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 74 [2024-11-08 17:28:44,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:28:45,089 INFO L124 PetriNetUnfolderBase]: 96/380 cut-off events. [2024-11-08 17:28:45,090 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-08 17:28:45,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 380 events. 96/380 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1893 event pairs, 90 based on Foata normal form. 4/310 useless extension candidates. Maximal degree in co-relation 535. Up to 213 conditions per place. [2024-11-08 17:28:45,093 INFO L140 encePairwiseOnDemand]: 61/74 looper letters, 69 selfloop transitions, 13 changer transitions 0/104 dead transitions. [2024-11-08 17:28:45,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 104 transitions, 520 flow [2024-11-08 17:28:45,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-08 17:28:45,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-08 17:28:45,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 390 transitions. [2024-11-08 17:28:45,096 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5855855855855856 [2024-11-08 17:28:45,096 INFO L175 Difference]: Start difference. First operand has 68 places, 64 transitions, 194 flow. Second operand 9 states and 390 transitions. [2024-11-08 17:28:45,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 104 transitions, 520 flow [2024-11-08 17:28:45,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 104 transitions, 460 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:28:45,101 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 246 flow [2024-11-08 17:28:45,101 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=246, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2024-11-08 17:28:45,102 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2024-11-08 17:28:45,102 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 246 flow [2024-11-08 17:28:45,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 35.1) internal successors, (702), 20 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:45,103 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:28:45,104 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1] [2024-11-08 17:28:45,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-08 17:28:45,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:28:45,309 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:28:45,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:45,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1401644266, now seen corresponding path program 1 times [2024-11-08 17:28:45,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:45,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773560902] [2024-11-08 17:28:45,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:45,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-08 17:28:45,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:45,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773560902] [2024-11-08 17:28:45,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773560902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:28:45,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:28:45,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:28:45,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936098745] [2024-11-08 17:28:45,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:28:45,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:28:45,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:45,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:28:45,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:28:45,692 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 74 [2024-11-08 17:28:45,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:45,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:28:45,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 74 [2024-11-08 17:28:45,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:28:45,828 INFO L124 PetriNetUnfolderBase]: 78/322 cut-off events. [2024-11-08 17:28:45,828 INFO L125 PetriNetUnfolderBase]: For 72/72 co-relation queries the response was YES. [2024-11-08 17:28:45,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 613 conditions, 322 events. 78/322 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1468 event pairs, 72 based on Foata normal form. 6/283 useless extension candidates. Maximal degree in co-relation 520. Up to 211 conditions per place. [2024-11-08 17:28:45,831 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 39 selfloop transitions, 1 changer transitions 0/65 dead transitions. [2024-11-08 17:28:45,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 65 transitions, 310 flow [2024-11-08 17:28:45,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:28:45,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:28:45,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 156 transitions. [2024-11-08 17:28:45,833 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7027027027027027 [2024-11-08 17:28:45,833 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 246 flow. Second operand 3 states and 156 transitions. [2024-11-08 17:28:45,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 65 transitions, 310 flow [2024-11-08 17:28:45,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 65 transitions, 298 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-08 17:28:45,837 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 220 flow [2024-11-08 17:28:45,838 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=220, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-11-08 17:28:45,838 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2024-11-08 17:28:45,839 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 220 flow [2024-11-08 17:28:45,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.25) internal successors, (181), 4 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:45,839 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:28:45,839 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:28:45,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 17:28:45,840 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:28:45,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:45,841 INFO L85 PathProgramCache]: Analyzing trace with hash 893825996, now seen corresponding path program 1 times [2024-11-08 17:28:45,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:45,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537927812] [2024-11-08 17:28:45,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:45,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 17:28:46,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:46,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537927812] [2024-11-08 17:28:46,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537927812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:28:46,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:28:46,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:28:46,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101017687] [2024-11-08 17:28:46,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:28:46,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:28:46,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:46,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:28:46,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:28:46,147 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 74 [2024-11-08 17:28:46,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 220 flow. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:46,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:28:46,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 74 [2024-11-08 17:28:46,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:28:46,301 INFO L124 PetriNetUnfolderBase]: 69/298 cut-off events. [2024-11-08 17:28:46,301 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2024-11-08 17:28:46,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 298 events. 69/298 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1303 event pairs, 56 based on Foata normal form. 8/269 useless extension candidates. Maximal degree in co-relation 542. Up to 168 conditions per place. [2024-11-08 17:28:46,304 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 42 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2024-11-08 17:28:46,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 318 flow [2024-11-08 17:28:46,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:28:46,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:28:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 173 transitions. [2024-11-08 17:28:46,306 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7792792792792793 [2024-11-08 17:28:46,306 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 220 flow. Second operand 3 states and 173 transitions. [2024-11-08 17:28:46,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 318 flow [2024-11-08 17:28:46,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 70 transitions, 317 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-08 17:28:46,310 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 219 flow [2024-11-08 17:28:46,310 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2024-11-08 17:28:46,311 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -5 predicate places. [2024-11-08 17:28:46,311 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 219 flow [2024-11-08 17:28:46,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:46,312 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:28:46,312 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:28:46,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 17:28:46,312 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:28:46,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:46,313 INFO L85 PathProgramCache]: Analyzing trace with hash 893825995, now seen corresponding path program 1 times [2024-11-08 17:28:46,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:46,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362340350] [2024-11-08 17:28:46,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:46,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:46,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:46,477 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-08 17:28:46,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:46,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362340350] [2024-11-08 17:28:46,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362340350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:28:46,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:28:46,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:28:46,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103152434] [2024-11-08 17:28:46,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:28:46,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:28:46,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:46,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:28:46,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:28:46,546 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 74 [2024-11-08 17:28:46,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 219 flow. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:46,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:28:46,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 74 [2024-11-08 17:28:46,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:28:46,696 INFO L124 PetriNetUnfolderBase]: 76/289 cut-off events. [2024-11-08 17:28:46,696 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-08 17:28:46,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 289 events. 76/289 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1172 event pairs, 56 based on Foata normal form. 8/267 useless extension candidates. Maximal degree in co-relation 564. Up to 168 conditions per place. [2024-11-08 17:28:46,699 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 43 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2024-11-08 17:28:46,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 68 transitions, 319 flow [2024-11-08 17:28:46,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:28:46,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-08 17:28:46,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 171 transitions. [2024-11-08 17:28:46,701 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7702702702702703 [2024-11-08 17:28:46,701 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 219 flow. Second operand 3 states and 171 transitions. [2024-11-08 17:28:46,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 68 transitions, 319 flow [2024-11-08 17:28:46,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 68 transitions, 315 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-08 17:28:46,704 INFO L231 Difference]: Finished difference. Result has 68 places, 61 transitions, 215 flow [2024-11-08 17:28:46,705 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=68, PETRI_TRANSITIONS=61} [2024-11-08 17:28:46,705 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2024-11-08 17:28:46,706 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 61 transitions, 215 flow [2024-11-08 17:28:46,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:46,706 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:28:46,707 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:28:46,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 17:28:46,707 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:28:46,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:46,708 INFO L85 PathProgramCache]: Analyzing trace with hash 892736095, now seen corresponding path program 1 times [2024-11-08 17:28:46,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:46,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713215728] [2024-11-08 17:28:46,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:46,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:46,891 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:46,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:46,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713215728] [2024-11-08 17:28:46,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713215728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:28:46,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218764093] [2024-11-08 17:28:46,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:46,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:28:46,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:28:46,895 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:28:46,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:28:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:47,178 INFO L255 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:28:47,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:28:47,239 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:47,239 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:28:47,316 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:47,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218764093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:28:47,317 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:28:47,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-08 17:28:47,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066130157] [2024-11-08 17:28:47,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:28:47,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-08 17:28:47,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:47,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-08 17:28:47,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:28:47,354 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 74 [2024-11-08 17:28:47,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 61 transitions, 215 flow. Second operand has 9 states, 9 states have (on average 50.44444444444444) internal successors, (454), 9 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:47,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:28:47,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 74 [2024-11-08 17:28:47,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:28:47,670 INFO L124 PetriNetUnfolderBase]: 64/285 cut-off events. [2024-11-08 17:28:47,670 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-08 17:28:47,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 569 conditions, 285 events. 64/285 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 969 event pairs, 63 based on Foata normal form. 8/263 useless extension candidates. Maximal degree in co-relation 555. Up to 147 conditions per place. [2024-11-08 17:28:47,672 INFO L140 encePairwiseOnDemand]: 69/74 looper letters, 61 selfloop transitions, 8 changer transitions 0/90 dead transitions. [2024-11-08 17:28:47,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 90 transitions, 439 flow [2024-11-08 17:28:47,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:28:47,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 17:28:47,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 437 transitions. [2024-11-08 17:28:47,675 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7381756756756757 [2024-11-08 17:28:47,675 INFO L175 Difference]: Start difference. First operand has 68 places, 61 transitions, 215 flow. Second operand 8 states and 437 transitions. [2024-11-08 17:28:47,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 90 transitions, 439 flow [2024-11-08 17:28:47,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 90 transitions, 433 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-11-08 17:28:47,679 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 236 flow [2024-11-08 17:28:47,680 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=236, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2024-11-08 17:28:47,681 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 3 predicate places. [2024-11-08 17:28:47,683 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 236 flow [2024-11-08 17:28:47,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 50.44444444444444) internal successors, (454), 9 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:28:47,684 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:28:47,684 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1] [2024-11-08 17:28:47,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:28:47,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-08 17:28:47,885 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:28:47,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:28:47,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1418745865, now seen corresponding path program 2 times [2024-11-08 17:28:47,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:28:47,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867094935] [2024-11-08 17:28:47,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:28:47,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:28:48,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:28:50,809 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:50,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:28:50,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867094935] [2024-11-08 17:28:50,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867094935] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:28:50,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770105342] [2024-11-08 17:28:50,810 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:28:50,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:28:50,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:28:50,813 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:28:50,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:28:51,269 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:28:51,270 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:28:51,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 920 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-08 17:28:51,283 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:28:51,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:28:51,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:28:51,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:28:51,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:28:51,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:28:51,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:28:51,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:28:51,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:28:51,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:28:51,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:28:51,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:28:51,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:28:52,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:28:52,137 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:28:52,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:28:52,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:28:52,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:28:52,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-08 17:28:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:52,521 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:28:52,986 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:28:52,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:28:53,141 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:28:53,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-08 17:28:53,521 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:28:53,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:28:53,665 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:28:53,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-08 17:28:54,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:28:54,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:28:54,236 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:28:54,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-08 17:28:54,653 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:28:54,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 61 [2024-11-08 17:28:54,801 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-08 17:28:54,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 12 [2024-11-08 17:28:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 86 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:28:54,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770105342] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:28:54,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:28:54,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 10] total 36 [2024-11-08 17:28:54,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111162191] [2024-11-08 17:28:54,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:28:54,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-08 17:28:54,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:28:54,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-08 17:28:54,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=1149, Unknown=0, NotChecked=0, Total=1406 [2024-11-08 17:29:06,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 74 [2024-11-08 17:29:06,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 236 flow. Second operand has 38 states, 38 states have (on average 37.526315789473685) internal successors, (1426), 38 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:29:06,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:29:06,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 74 [2024-11-08 17:29:06,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:29:08,517 INFO L124 PetriNetUnfolderBase]: 77/367 cut-off events. [2024-11-08 17:29:08,517 INFO L125 PetriNetUnfolderBase]: For 251/251 co-relation queries the response was YES. [2024-11-08 17:29:08,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 367 events. 77/367 cut-off events. For 251/251 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1311 event pairs, 72 based on Foata normal form. 6/340 useless extension candidates. Maximal degree in co-relation 763. Up to 173 conditions per place. [2024-11-08 17:29:08,520 INFO L140 encePairwiseOnDemand]: 66/74 looper letters, 83 selfloop transitions, 20 changer transitions 0/124 dead transitions. [2024-11-08 17:29:08,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 124 transitions, 736 flow [2024-11-08 17:29:08,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:29:08,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:29:08,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 564 transitions. [2024-11-08 17:29:08,524 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5862785862785863 [2024-11-08 17:29:08,525 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 236 flow. Second operand 13 states and 564 transitions. [2024-11-08 17:29:08,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 124 transitions, 736 flow [2024-11-08 17:29:08,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 124 transitions, 728 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-11-08 17:29:08,531 INFO L231 Difference]: Finished difference. Result has 94 places, 73 transitions, 394 flow [2024-11-08 17:29:08,531 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=394, PETRI_PLACES=94, PETRI_TRANSITIONS=73} [2024-11-08 17:29:08,532 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 19 predicate places. [2024-11-08 17:29:08,532 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 73 transitions, 394 flow [2024-11-08 17:29:08,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 37.526315789473685) internal successors, (1426), 38 states have internal predecessors, (1426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:29:08,533 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:29:08,533 INFO L204 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:29:08,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-08 17:29:08,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:29:08,734 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:29:08,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:29:08,735 INFO L85 PathProgramCache]: Analyzing trace with hash -847522785, now seen corresponding path program 2 times [2024-11-08 17:29:08,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:29:08,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845006476] [2024-11-08 17:29:08,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:08,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:29:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:09,352 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:29:09,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:29:09,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845006476] [2024-11-08 17:29:09,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845006476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:29:09,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476209664] [2024-11-08 17:29:09,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:29:09,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:29:09,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:29:09,356 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:29:09,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:29:09,869 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:29:09,869 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:29:09,876 INFO L255 TraceCheckSpWp]: Trace formula consists of 1279 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:29:09,882 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:29:10,025 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:29:10,025 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:29:10,242 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:29:10,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476209664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:29:10,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:29:10,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2024-11-08 17:29:10,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255281605] [2024-11-08 17:29:10,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:29:10,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:29:10,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:29:10,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:29:10,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-08 17:29:10,294 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 74 [2024-11-08 17:29:10,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 73 transitions, 394 flow. Second operand has 13 states, 13 states have (on average 51.84615384615385) internal successors, (674), 13 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:29:10,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:29:10,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 74 [2024-11-08 17:29:10,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:29:10,694 INFO L124 PetriNetUnfolderBase]: 64/332 cut-off events. [2024-11-08 17:29:10,694 INFO L125 PetriNetUnfolderBase]: For 400/400 co-relation queries the response was YES. [2024-11-08 17:29:10,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 332 events. 64/332 cut-off events. For 400/400 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 978 event pairs, 63 based on Foata normal form. 4/306 useless extension candidates. Maximal degree in co-relation 753. Up to 147 conditions per place. [2024-11-08 17:29:10,697 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 90 selfloop transitions, 12 changer transitions 0/123 dead transitions. [2024-11-08 17:29:10,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 123 transitions, 836 flow [2024-11-08 17:29:10,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 17:29:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-08 17:29:10,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 645 transitions. [2024-11-08 17:29:10,705 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7263513513513513 [2024-11-08 17:29:10,705 INFO L175 Difference]: Start difference. First operand has 94 places, 73 transitions, 394 flow. Second operand 12 states and 645 transitions. [2024-11-08 17:29:10,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 123 transitions, 836 flow [2024-11-08 17:29:10,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 123 transitions, 816 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-11-08 17:29:10,713 INFO L231 Difference]: Finished difference. Result has 105 places, 70 transitions, 402 flow [2024-11-08 17:29:10,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=350, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=402, PETRI_PLACES=105, PETRI_TRANSITIONS=70} [2024-11-08 17:29:10,715 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 30 predicate places. [2024-11-08 17:29:10,716 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 70 transitions, 402 flow [2024-11-08 17:29:10,717 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 51.84615384615385) internal successors, (674), 13 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:29:10,717 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:29:10,717 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1] [2024-11-08 17:29:10,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:29:10,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:29:10,918 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:29:10,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:29:10,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1649893015, now seen corresponding path program 3 times [2024-11-08 17:29:10,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:29:10,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802300314] [2024-11-08 17:29:10,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:29:10,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:29:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:29:12,219 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 445 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:29:12,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:29:12,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802300314] [2024-11-08 17:29:12,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802300314] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:29:12,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619988019] [2024-11-08 17:29:12,220 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:29:12,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:29:12,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:29:12,223 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:29:12,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:38:23,590 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-08 17:38:23,590 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:38:23,681 INFO L255 TraceCheckSpWp]: Trace formula consists of 2096 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-08 17:38:23,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:38:23,912 INFO L134 CoverageAnalysis]: Checked inductivity of 545 backedges. 545 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:38:23,912 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:38:23,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619988019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:38:23,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:38:23,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 13 [2024-11-08 17:38:23,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337826128] [2024-11-08 17:38:23,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:38:23,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-08 17:38:23,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:38:23,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-08 17:38:23,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=101, Unknown=0, NotChecked=0, Total=182 [2024-11-08 17:38:23,951 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 74 [2024-11-08 17:38:23,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 70 transitions, 402 flow. Second operand has 13 states, 13 states have (on average 51.46153846153846) internal successors, (669), 13 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:38:23,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:38:23,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 74 [2024-11-08 17:38:23,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:38:24,425 INFO L124 PetriNetUnfolderBase]: 63/326 cut-off events. [2024-11-08 17:38:24,425 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2024-11-08 17:38:24,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 326 events. 63/326 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 964 event pairs, 63 based on Foata normal form. 1/297 useless extension candidates. Maximal degree in co-relation 735. Up to 145 conditions per place. [2024-11-08 17:38:24,428 INFO L140 encePairwiseOnDemand]: 70/74 looper letters, 88 selfloop transitions, 12 changer transitions 0/120 dead transitions. [2024-11-08 17:38:24,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 120 transitions, 821 flow [2024-11-08 17:38:24,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 17:38:24,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-08 17:38:24,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 686 transitions. [2024-11-08 17:38:24,432 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7130977130977131 [2024-11-08 17:38:24,432 INFO L175 Difference]: Start difference. First operand has 105 places, 70 transitions, 402 flow. Second operand 13 states and 686 transitions. [2024-11-08 17:38:24,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 120 transitions, 821 flow [2024-11-08 17:38:24,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 120 transitions, 771 flow, removed 5 selfloop flow, removed 20 redundant places. [2024-11-08 17:38:24,439 INFO L231 Difference]: Finished difference. Result has 96 places, 67 transitions, 341 flow [2024-11-08 17:38:24,440 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=341, PETRI_PLACES=96, PETRI_TRANSITIONS=67} [2024-11-08 17:38:24,440 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 21 predicate places. [2024-11-08 17:38:24,441 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 67 transitions, 341 flow [2024-11-08 17:38:24,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 51.46153846153846) internal successors, (669), 13 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:38:24,442 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:38:24,442 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:38:24,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-08 17:38:24,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:38:24,643 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:38:24,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:38:24,644 INFO L85 PathProgramCache]: Analyzing trace with hash -42600993, now seen corresponding path program 3 times [2024-11-08 17:38:24,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:38:24,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437177555] [2024-11-08 17:38:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:38:24,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:38:24,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:38:26,304 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 372 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:38:26,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:38:26,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437177555] [2024-11-08 17:38:26,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437177555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:38:26,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420390901] [2024-11-08 17:38:26,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-08 17:38:26,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:38:26,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:38:26,308 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:38:26,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:38:26,903 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-08 17:38:26,903 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:38:26,908 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:38:26,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:38:27,847 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2024-11-08 17:38:27,847 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:38:27,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420390901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:38:27,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-08 17:38:27,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [11] total 15 [2024-11-08 17:38:27,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425483143] [2024-11-08 17:38:27,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:38:27,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:38:27,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 17:38:27,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:38:27,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-08 17:38:28,082 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 44 out of 74 [2024-11-08 17:38:28,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 67 transitions, 341 flow. Second operand has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:38:28,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 17:38:28,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 44 of 74 [2024-11-08 17:38:28,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 17:38:28,346 INFO L124 PetriNetUnfolderBase]: 69/360 cut-off events. [2024-11-08 17:38:28,347 INFO L125 PetriNetUnfolderBase]: For 318/318 co-relation queries the response was YES. [2024-11-08 17:38:28,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 796 conditions, 360 events. 69/360 cut-off events. For 318/318 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1237 event pairs, 18 based on Foata normal form. 3/325 useless extension candidates. Maximal degree in co-relation 770. Up to 124 conditions per place. [2024-11-08 17:38:28,349 INFO L140 encePairwiseOnDemand]: 65/74 looper letters, 39 selfloop transitions, 23 changer transitions 3/84 dead transitions. [2024-11-08 17:38:28,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 84 transitions, 507 flow [2024-11-08 17:38:28,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:38:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-08 17:38:28,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 400 transitions. [2024-11-08 17:38:28,352 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-11-08 17:38:28,352 INFO L175 Difference]: Start difference. First operand has 96 places, 67 transitions, 341 flow. Second operand 8 states and 400 transitions. [2024-11-08 17:38:28,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 84 transitions, 507 flow [2024-11-08 17:38:28,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 84 transitions, 483 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-11-08 17:38:28,358 INFO L231 Difference]: Finished difference. Result has 92 places, 69 transitions, 374 flow [2024-11-08 17:38:28,359 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=74, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=374, PETRI_PLACES=92, PETRI_TRANSITIONS=69} [2024-11-08 17:38:28,359 INFO L277 CegarLoopForPetriNet]: 75 programPoint places, 17 predicate places. [2024-11-08 17:38:28,359 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 69 transitions, 374 flow [2024-11-08 17:38:28,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 47.0) internal successors, (282), 6 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:38:28,360 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 17:38:28,360 INFO L204 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:38:28,391 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:38:28,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-08 17:38:28,561 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2024-11-08 17:38:28,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:38:28,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1320630449, now seen corresponding path program 1 times [2024-11-08 17:38:28,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 17:38:28,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773168706] [2024-11-08 17:38:28,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:38:28,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 17:38:32,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:40:31,436 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 0 proven. 505 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:40:31,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 17:40:31,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773168706] [2024-11-08 17:40:31,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773168706] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:40:31,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926506622] [2024-11-08 17:40:31,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:40:31,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:40:31,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:40:31,440 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:40:31,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_75f53a09-db34-49e5-92ac-fad7e6b522f5/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:40:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:40:33,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 2071 conjuncts, 413 conjuncts are in the unsatisfiable core [2024-11-08 17:40:33,549 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:40:33,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-08 17:40:34,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-08 17:40:34,327 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-08 17:40:34,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 3 [2024-11-08 17:40:34,354 INFO L349 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2024-11-08 17:40:34,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 18 [2024-11-08 17:40:36,102 INFO L349 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2024-11-08 17:40:36,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 26 [2024-11-08 17:40:36,148 INFO L349 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2024-11-08 17:40:36,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 33 [2024-11-08 17:40:36,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 28 [2024-11-08 17:40:36,822 INFO L349 Elim1Store]: treesize reduction 76, result has 21.6 percent of original size [2024-11-08 17:40:36,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 32 [2024-11-08 17:40:36,861 INFO L349 Elim1Store]: treesize reduction 20, result has 60.0 percent of original size [2024-11-08 17:40:36,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 37 treesize of output 50 [2024-11-08 17:40:36,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-08 17:40:38,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:40:38,981 INFO L349 Elim1Store]: treesize reduction 116, result has 23.7 percent of original size [2024-11-08 17:40:38,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 70 treesize of output 97 [2024-11-08 17:40:39,044 INFO L349 Elim1Store]: treesize reduction 84, result has 31.7 percent of original size [2024-11-08 17:40:39,044 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 62 treesize of output 83 [2024-11-08 17:40:39,958 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:40:39,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2024-11-08 17:40:39,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 57 [2024-11-08 17:40:40,045 INFO L349 Elim1Store]: treesize reduction 126, result has 32.3 percent of original size [2024-11-08 17:40:40,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 45 treesize of output 72 [2024-11-08 17:40:40,079 INFO L349 Elim1Store]: treesize reduction 17, result has 5.6 percent of original size [2024-11-08 17:40:40,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 41 [2024-11-08 17:40:42,848 INFO L349 Elim1Store]: treesize reduction 108, result has 22.9 percent of original size [2024-11-08 17:40:42,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 38 treesize of output 46 [2024-11-08 17:40:42,949 INFO L349 Elim1Store]: treesize reduction 86, result has 41.1 percent of original size [2024-11-08 17:40:42,949 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 69 [2024-11-08 17:40:44,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 94 [2024-11-08 17:40:44,139 INFO L349 Elim1Store]: treesize reduction 86, result has 53.8 percent of original size [2024-11-08 17:40:44,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 91 treesize of output 158 [2024-11-08 17:40:44,260 INFO L349 Elim1Store]: treesize reduction 198, result has 17.8 percent of original size [2024-11-08 17:40:44,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 49 treesize of output 60 [2024-11-08 17:40:44,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 44 [2024-11-08 17:40:48,913 INFO L349 Elim1Store]: treesize reduction 262, result has 61.8 percent of original size [2024-11-08 17:40:48,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 43 case distinctions, treesize of input 290 treesize of output 652 [2024-11-08 17:40:49,608 INFO L349 Elim1Store]: treesize reduction 262, result has 61.8 percent of original size [2024-11-08 17:40:49,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 2 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 43 case distinctions, treesize of input 311 treesize of output 693