./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc 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_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya --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 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 03:25:45,433 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 03:25:45,511 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 03:25:45,516 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 03:25:45,517 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 03:25:45,545 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 03:25:45,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 03:25:45,547 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 03:25:45,548 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 03:25:45,548 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 03:25:45,549 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 03:25:45,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 03:25:45,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 03:25:45,551 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 03:25:45,552 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 03:25:45,553 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 03:25:45,554 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 03:25:45,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 03:25:45,555 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 03:25:45,555 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 03:25:45,556 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 03:25:45,557 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 03:25:45,558 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 03:25:45,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 03:25:45,559 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 03:25:45,560 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 03:25:45,560 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 03:25:45,560 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 03:25:45,561 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 03:25:45,561 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 03:25:45,562 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 03:25:45,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 03:25:45,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:25:45,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 03:25:45,564 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 03:25:45,564 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 03:25:45,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 03:25:45,565 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 03:25:45,566 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 03:25:45,566 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 03:25:45,567 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 03:25:45,567 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_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 29016034e4102bf62d4fcba069301a54da1d77dfd5739e4cf52e395ddaa22e38 [2023-11-29 03:25:45,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 03:25:45,878 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 03:25:45,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 03:25:45,883 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 03:25:45,883 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 03:25:45,885 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2023-11-29 03:25:49,416 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 03:25:49,723 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 03:25:49,724 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/sv-benchmarks/c/pthread-deagle/arithmetic_prog_ok.i [2023-11-29 03:25:49,745 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/data/4dad7f554/c19c9fc398e9479ca1fecee6ecbed666/FLAGf60f02a21 [2023-11-29 03:25:49,761 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/data/4dad7f554/c19c9fc398e9479ca1fecee6ecbed666 [2023-11-29 03:25:49,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 03:25:49,765 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 03:25:49,767 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 03:25:49,767 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 03:25:49,774 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 03:25:49,775 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:25:49" (1/1) ... [2023-11-29 03:25:49,776 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d50f7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:49, skipping insertion in model container [2023-11-29 03:25:49,776 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 03:25:49" (1/1) ... [2023-11-29 03:25:49,842 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 03:25:50,315 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:25:50,335 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 03:25:50,389 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 03:25:50,466 INFO L206 MainTranslator]: Completed translation [2023-11-29 03:25:50,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:50 WrapperNode [2023-11-29 03:25:50,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 03:25:50,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 03:25:50,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 03:25:50,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 03:25:50,479 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:50" (1/1) ... [2023-11-29 03:25:50,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:50" (1/1) ... [2023-11-29 03:25:50,526 INFO L138 Inliner]: procedures = 244, calls = 55, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 83 [2023-11-29 03:25:50,527 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 03:25:50,528 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 03:25:50,528 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 03:25:50,528 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 03:25:50,543 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:50" (1/1) ... [2023-11-29 03:25:50,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:50" (1/1) ... [2023-11-29 03:25:50,549 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:50" (1/1) ... [2023-11-29 03:25:50,570 INFO L175 MemorySlicer]: Split 31 memory accesses to 7 slices as follows [2, 1, 2, 8, 8, 8, 2]. 26 percent of accesses are in the largest equivalence class. The 27 initializations are split as follows [2, 1, 0, 8, 8, 8, 0]. The 2 writes are split as follows [0, 0, 1, 0, 0, 0, 1]. [2023-11-29 03:25:50,570 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:50" (1/1) ... [2023-11-29 03:25:50,571 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:50" (1/1) ... [2023-11-29 03:25:50,585 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:50" (1/1) ... [2023-11-29 03:25:50,590 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:50" (1/1) ... [2023-11-29 03:25:50,595 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:50" (1/1) ... [2023-11-29 03:25:50,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:50" (1/1) ... [2023-11-29 03:25:50,604 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 03:25:50,606 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 03:25:50,606 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 03:25:50,606 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 03:25:50,607 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:50" (1/1) ... [2023-11-29 03:25:50,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 03:25:50,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:25:50,644 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 03:25:50,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 03:25:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 03:25:50,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 03:25:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-29 03:25:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-29 03:25:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-29 03:25:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-29 03:25:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-29 03:25:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-29 03:25:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-29 03:25:50,686 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 03:25:50,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 03:25:50,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 03:25:50,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 03:25:50,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 03:25:50,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 03:25:50,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-29 03:25:50,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-29 03:25:50,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 03:25:50,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 03:25:50,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 03:25:50,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 03:25:50,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 03:25:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 03:25:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 03:25:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 03:25:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 03:25:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 03:25:50,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-29 03:25:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 03:25:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 03:25:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 03:25:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 03:25:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 03:25:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 03:25:50,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 03:25:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 03:25:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-29 03:25:50,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 03:25:50,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 03:25:50,693 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 03:25:50,901 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 03:25:50,904 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 03:25:51,154 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 03:25:51,429 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 03:25:51,430 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-29 03:25:51,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:25:51 BoogieIcfgContainer [2023-11-29 03:25:51,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 03:25:51,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 03:25:51,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 03:25:51,438 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 03:25:51,438 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 03:25:49" (1/3) ... [2023-11-29 03:25:51,439 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312ce240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:25:51, skipping insertion in model container [2023-11-29 03:25:51,439 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 03:25:50" (2/3) ... [2023-11-29 03:25:51,440 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@312ce240 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 03:25:51, skipping insertion in model container [2023-11-29 03:25:51,440 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:25:51" (3/3) ... [2023-11-29 03:25:51,441 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_ok.i [2023-11-29 03:25:51,463 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 03:25:51,464 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-29 03:25:51,464 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 03:25:51,513 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 03:25:51,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 59 places, 59 transitions, 132 flow [2023-11-29 03:25:51,586 INFO L124 PetriNetUnfolderBase]: 7/57 cut-off events. [2023-11-29 03:25:51,586 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 03:25:51,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 57 events. 7/57 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 115 event pairs, 0 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 35. Up to 3 conditions per place. [2023-11-29 03:25:51,590 INFO L82 GeneralOperation]: Start removeDead. Operand has 59 places, 59 transitions, 132 flow [2023-11-29 03:25:51,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 56 transitions, 124 flow [2023-11-29 03:25:51,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 03:25:51,615 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@48a381c6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 03:25:51,615 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-29 03:25:51,620 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 03:25:51,620 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 03:25:51,620 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 03:25:51,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:25:51,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 03:25:51,622 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:25:51,628 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:25:51,628 INFO L85 PathProgramCache]: Analyzing trace with hash 12217, now seen corresponding path program 1 times [2023-11-29 03:25:51,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:25:51,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897249721] [2023-11-29 03:25:51,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:51,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:25:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:51,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:51,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:25:51,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897249721] [2023-11-29 03:25:51,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897249721] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:25:51,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:25:51,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:25:51,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465088899] [2023-11-29 03:25:51,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:25:52,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:25:52,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:25:52,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:25:52,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:25:52,068 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2023-11-29 03:25:52,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2023-11-29 03:25:52,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:25:52,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2023-11-29 03:25:52,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:25:52,284 INFO L124 PetriNetUnfolderBase]: 503/881 cut-off events. [2023-11-29 03:25:52,284 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-29 03:25:52,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1675 conditions, 881 events. 503/881 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4146 event pairs, 346 based on Foata normal form. 2/833 useless extension candidates. Maximal degree in co-relation 1574. Up to 761 conditions per place. [2023-11-29 03:25:52,295 INFO L140 encePairwiseOnDemand]: 53/59 looper letters, 27 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-11-29 03:25:52,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 51 transitions, 172 flow [2023-11-29 03:25:52,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:25:52,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:25:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 105 transitions. [2023-11-29 03:25:52,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5932203389830508 [2023-11-29 03:25:52,307 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 105 transitions. [2023-11-29 03:25:52,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 105 transitions. [2023-11-29 03:25:52,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:25:52,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 105 transitions. [2023-11-29 03:25:52,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:25:52,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:52,317 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:52,319 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 124 flow. Second operand 3 states and 105 transitions. [2023-11-29 03:25:52,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 51 transitions, 172 flow [2023-11-29 03:25:52,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 164 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:25:52,326 INFO L231 Difference]: Finished difference. Result has 51 places, 51 transitions, 110 flow [2023-11-29 03:25:52,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=51, PETRI_TRANSITIONS=51} [2023-11-29 03:25:52,332 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-11-29 03:25:52,332 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 51 transitions, 110 flow [2023-11-29 03:25:52,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 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) [2023-11-29 03:25:52,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:25:52,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 03:25:52,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 03:25:52,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:25:52,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:25:52,334 INFO L85 PathProgramCache]: Analyzing trace with hash 12218, now seen corresponding path program 1 times [2023-11-29 03:25:52,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:25:52,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113481202] [2023-11-29 03:25:52,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:52,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:25:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:52,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:52,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:25:52,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113481202] [2023-11-29 03:25:52,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113481202] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:25:52,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:25:52,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:25:52,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212914229] [2023-11-29 03:25:52,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:25:52,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:25:52,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:25:52,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:25:52,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:25:52,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2023-11-29 03:25:52,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 51 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:25:52,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:25:52,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2023-11-29 03:25:52,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:25:52,595 INFO L124 PetriNetUnfolderBase]: 309/571 cut-off events. [2023-11-29 03:25:52,595 INFO L125 PetriNetUnfolderBase]: For 10/12 co-relation queries the response was YES. [2023-11-29 03:25:52,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1070 conditions, 571 events. 309/571 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2495 event pairs, 207 based on Foata normal form. 76/628 useless extension candidates. Maximal degree in co-relation 1060. Up to 484 conditions per place. [2023-11-29 03:25:52,601 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 25 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-11-29 03:25:52,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 49 transitions, 160 flow [2023-11-29 03:25:52,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:25:52,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:25:52,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2023-11-29 03:25:52,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6045197740112994 [2023-11-29 03:25:52,603 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2023-11-29 03:25:52,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2023-11-29 03:25:52,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:25:52,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2023-11-29 03:25:52,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2023-11-29 03:25:52,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:52,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:52,607 INFO L175 Difference]: Start difference. First operand has 51 places, 51 transitions, 110 flow. Second operand 3 states and 107 transitions. [2023-11-29 03:25:52,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 49 transitions, 160 flow [2023-11-29 03:25:52,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 49 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:25:52,610 INFO L231 Difference]: Finished difference. Result has 49 places, 49 transitions, 106 flow [2023-11-29 03:25:52,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=49, PETRI_TRANSITIONS=49} [2023-11-29 03:25:52,611 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-11-29 03:25:52,612 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 49 transitions, 106 flow [2023-11-29 03:25:52,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:25:52,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:25:52,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 03:25:52,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 03:25:52,612 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:25:52,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:25:52,613 INFO L85 PathProgramCache]: Analyzing trace with hash 364332473, now seen corresponding path program 1 times [2023-11-29 03:25:52,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:25:52,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648886012] [2023-11-29 03:25:52,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:52,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:25:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:52,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:52,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:25:52,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648886012] [2023-11-29 03:25:52,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648886012] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:25:52,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:25:52,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:25:52,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699873289] [2023-11-29 03:25:52,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:25:52,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:25:52,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:25:52,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:25:52,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:25:52,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2023-11-29 03:25:52,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 49 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-11-29 03:25:52,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:25:52,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2023-11-29 03:25:52,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:25:52,808 INFO L124 PetriNetUnfolderBase]: 332/610 cut-off events. [2023-11-29 03:25:52,808 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-29 03:25:52,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 610 events. 332/610 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2742 event pairs, 224 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 1141. Up to 525 conditions per place. [2023-11-29 03:25:52,812 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 27 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-29 03:25:52,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 160 flow [2023-11-29 03:25:52,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:25:52,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:25:52,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 103 transitions. [2023-11-29 03:25:52,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5819209039548022 [2023-11-29 03:25:52,815 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 103 transitions. [2023-11-29 03:25:52,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 103 transitions. [2023-11-29 03:25:52,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:25:52,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 103 transitions. [2023-11-29 03:25:52,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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) [2023-11-29 03:25:52,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:52,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:52,818 INFO L175 Difference]: Start difference. First operand has 49 places, 49 transitions, 106 flow. Second operand 3 states and 103 transitions. [2023-11-29 03:25:52,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 160 flow [2023-11-29 03:25:52,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:25:52,820 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 102 flow [2023-11-29 03:25:52,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2023-11-29 03:25:52,821 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -9 predicate places. [2023-11-29 03:25:52,821 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 102 flow [2023-11-29 03:25:52,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 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) [2023-11-29 03:25:52,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:25:52,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 03:25:52,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 03:25:52,823 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:25:52,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:25:52,823 INFO L85 PathProgramCache]: Analyzing trace with hash 364332474, now seen corresponding path program 1 times [2023-11-29 03:25:52,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:25:52,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837707093] [2023-11-29 03:25:52,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:52,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:25:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:52,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:25:52,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837707093] [2023-11-29 03:25:52,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837707093] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:25:52,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:25:52,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 03:25:52,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828671652] [2023-11-29 03:25:52,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:25:52,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:25:52,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:25:52,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:25:52,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:25:52,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2023-11-29 03:25:52,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2023-11-29 03:25:52,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:25:52,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2023-11-29 03:25:52,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:25:53,026 INFO L124 PetriNetUnfolderBase]: 309/567 cut-off events. [2023-11-29 03:25:53,027 INFO L125 PetriNetUnfolderBase]: For 10/12 co-relation queries the response was YES. [2023-11-29 03:25:53,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1066 conditions, 567 events. 309/567 cut-off events. For 10/12 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2470 event pairs, 207 based on Foata normal form. 15/567 useless extension candidates. Maximal degree in co-relation 1056. Up to 484 conditions per place. [2023-11-29 03:25:53,031 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 25 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-29 03:25:53,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 45 transitions, 152 flow [2023-11-29 03:25:53,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:25:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:25:53,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2023-11-29 03:25:53,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6045197740112994 [2023-11-29 03:25:53,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 107 transitions. [2023-11-29 03:25:53,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 107 transitions. [2023-11-29 03:25:53,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:25:53,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 107 transitions. [2023-11-29 03:25:53,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 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) [2023-11-29 03:25:53,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:53,036 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:53,036 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 102 flow. Second operand 3 states and 107 transitions. [2023-11-29 03:25:53,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 45 transitions, 152 flow [2023-11-29 03:25:53,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 148 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:25:53,038 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 98 flow [2023-11-29 03:25:53,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-11-29 03:25:53,039 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -11 predicate places. [2023-11-29 03:25:53,039 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 98 flow [2023-11-29 03:25:53,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 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) [2023-11-29 03:25:53,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:25:53,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:25:53,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 03:25:53,040 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:25:53,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:25:53,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1814561706, now seen corresponding path program 1 times [2023-11-29 03:25:53,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:25:53,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179240190] [2023-11-29 03:25:53,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:53,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:25:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:53,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:53,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:25:53,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179240190] [2023-11-29 03:25:53,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179240190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:25:53,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:25:53,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:25:53,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294591240] [2023-11-29 03:25:53,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:25:53,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:25:53,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:25:53,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:25:53,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:25:53,121 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 59 [2023-11-29 03:25:53,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2023-11-29 03:25:53,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:25:53,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 59 [2023-11-29 03:25:53,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:25:53,296 INFO L124 PetriNetUnfolderBase]: 539/1002 cut-off events. [2023-11-29 03:25:53,297 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-29 03:25:53,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1862 conditions, 1002 events. 539/1002 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 4973 event pairs, 219 based on Foata normal form. 20/1007 useless extension candidates. Maximal degree in co-relation 1852. Up to 496 conditions per place. [2023-11-29 03:25:53,302 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 44 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-29 03:25:53,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 64 transitions, 229 flow [2023-11-29 03:25:53,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:25:53,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:25:53,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 131 transitions. [2023-11-29 03:25:53,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7401129943502824 [2023-11-29 03:25:53,304 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 131 transitions. [2023-11-29 03:25:53,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 131 transitions. [2023-11-29 03:25:53,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:25:53,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 131 transitions. [2023-11-29 03:25:53,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:25:53,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:53,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:53,308 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 98 flow. Second operand 3 states and 131 transitions. [2023-11-29 03:25:53,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 64 transitions, 229 flow [2023-11-29 03:25:53,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 64 transitions, 225 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 03:25:53,310 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 106 flow [2023-11-29 03:25:53,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-11-29 03:25:53,311 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -10 predicate places. [2023-11-29 03:25:53,311 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 106 flow [2023-11-29 03:25:53,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 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) [2023-11-29 03:25:53,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:25:53,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:25:53,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 03:25:53,312 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:25:53,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:25:53,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1715936002, now seen corresponding path program 1 times [2023-11-29 03:25:53,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:25:53,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784835665] [2023-11-29 03:25:53,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:53,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:25:53,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:53,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:53,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:25:53,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784835665] [2023-11-29 03:25:53,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784835665] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:25:53,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:25:53,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:25:53,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552015817] [2023-11-29 03:25:53,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:25:53,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:25:53,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:25:53,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:25:53,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:25:53,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 59 [2023-11-29 03:25:53,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2023-11-29 03:25:53,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:25:53,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 59 [2023-11-29 03:25:53,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:25:53,583 INFO L124 PetriNetUnfolderBase]: 940/1698 cut-off events. [2023-11-29 03:25:53,584 INFO L125 PetriNetUnfolderBase]: For 159/159 co-relation queries the response was YES. [2023-11-29 03:25:53,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3323 conditions, 1698 events. 940/1698 cut-off events. For 159/159 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 8969 event pairs, 394 based on Foata normal form. 33/1709 useless extension candidates. Maximal degree in co-relation 1301. Up to 865 conditions per place. [2023-11-29 03:25:53,593 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 45 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-29 03:25:53,594 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 249 flow [2023-11-29 03:25:53,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:25:53,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:25:53,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 130 transitions. [2023-11-29 03:25:53,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7344632768361582 [2023-11-29 03:25:53,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 130 transitions. [2023-11-29 03:25:53,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 130 transitions. [2023-11-29 03:25:53,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:25:53,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 130 transitions. [2023-11-29 03:25:53,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.333333333333336) internal successors, (130), 3 states have internal predecessors, (130), 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) [2023-11-29 03:25:53,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:53,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:53,598 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 106 flow. Second operand 3 states and 130 transitions. [2023-11-29 03:25:53,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 249 flow [2023-11-29 03:25:53,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 65 transitions, 245 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:25:53,601 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 116 flow [2023-11-29 03:25:53,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2023-11-29 03:25:53,602 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -8 predicate places. [2023-11-29 03:25:53,602 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 116 flow [2023-11-29 03:25:53,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 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) [2023-11-29 03:25:53,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:25:53,603 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:25:53,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 03:25:53,603 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:25:53,604 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:25:53,604 INFO L85 PathProgramCache]: Analyzing trace with hash -217206900, now seen corresponding path program 1 times [2023-11-29 03:25:53,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:25:53,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14305701] [2023-11-29 03:25:53,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:53,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:25:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:53,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:25:53,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14305701] [2023-11-29 03:25:53,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14305701] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:25:53,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514079368] [2023-11-29 03:25:53,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:53,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:25:53,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:25:53,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:25:53,723 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 03:25:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:53,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 03:25:53,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:25:53,926 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:25:53,927 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:25:53,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514079368] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:25:53,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:25:53,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-29 03:25:53,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200497196] [2023-11-29 03:25:53,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:25:53,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:25:53,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:25:53,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:25:53,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:25:53,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 59 [2023-11-29 03:25:53,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-11-29 03:25:53,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:25:53,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 59 [2023-11-29 03:25:53,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:25:54,128 INFO L124 PetriNetUnfolderBase]: 942/1712 cut-off events. [2023-11-29 03:25:54,129 INFO L125 PetriNetUnfolderBase]: For 194/195 co-relation queries the response was YES. [2023-11-29 03:25:54,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3475 conditions, 1712 events. 942/1712 cut-off events. For 194/195 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9217 event pairs, 622 based on Foata normal form. 2/1682 useless extension candidates. Maximal degree in co-relation 1341. Up to 1362 conditions per place. [2023-11-29 03:25:54,139 INFO L140 encePairwiseOnDemand]: 57/59 looper letters, 40 selfloop transitions, 1 changer transitions 0/58 dead transitions. [2023-11-29 03:25:54,140 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 58 transitions, 229 flow [2023-11-29 03:25:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:25:54,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:25:54,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 120 transitions. [2023-11-29 03:25:54,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6779661016949152 [2023-11-29 03:25:54,141 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 120 transitions. [2023-11-29 03:25:54,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 120 transitions. [2023-11-29 03:25:54,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:25:54,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 120 transitions. [2023-11-29 03:25:54,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.0) internal successors, (120), 3 states have internal predecessors, (120), 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) [2023-11-29 03:25:54,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:54,143 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:54,143 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 116 flow. Second operand 3 states and 120 transitions. [2023-11-29 03:25:54,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 58 transitions, 229 flow [2023-11-29 03:25:54,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 58 transitions, 227 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:25:54,146 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 114 flow [2023-11-29 03:25:54,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-11-29 03:25:54,147 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -7 predicate places. [2023-11-29 03:25:54,147 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 114 flow [2023-11-29 03:25:54,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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) [2023-11-29 03:25:54,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:25:54,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:25:54,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 03:25:54,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:25:54,349 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:25:54,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:25:54,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1310214923, now seen corresponding path program 1 times [2023-11-29 03:25:54,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:25:54,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021299148] [2023-11-29 03:25:54,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:54,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:25:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:54,462 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:54,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:25:54,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021299148] [2023-11-29 03:25:54,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021299148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:25:54,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 03:25:54,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 03:25:54,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201886629] [2023-11-29 03:25:54,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:25:54,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 03:25:54,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:25:54,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 03:25:54,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 03:25:54,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 59 [2023-11-29 03:25:54,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2023-11-29 03:25:54,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:25:54,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 59 [2023-11-29 03:25:54,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:25:54,626 INFO L124 PetriNetUnfolderBase]: 497/1076 cut-off events. [2023-11-29 03:25:54,627 INFO L125 PetriNetUnfolderBase]: For 212/212 co-relation queries the response was YES. [2023-11-29 03:25:54,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2224 conditions, 1076 events. 497/1076 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5549 event pairs, 182 based on Foata normal form. 96/1167 useless extension candidates. Maximal degree in co-relation 1979. Up to 490 conditions per place. [2023-11-29 03:25:54,633 INFO L140 encePairwiseOnDemand]: 51/59 looper letters, 33 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2023-11-29 03:25:54,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 58 transitions, 240 flow [2023-11-29 03:25:54,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 03:25:54,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 03:25:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 125 transitions. [2023-11-29 03:25:54,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7062146892655368 [2023-11-29 03:25:54,635 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 125 transitions. [2023-11-29 03:25:54,635 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 125 transitions. [2023-11-29 03:25:54,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:25:54,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 125 transitions. [2023-11-29 03:25:54,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 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) [2023-11-29 03:25:54,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:54,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2023-11-29 03:25:54,637 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 114 flow. Second operand 3 states and 125 transitions. [2023-11-29 03:25:54,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 58 transitions, 240 flow [2023-11-29 03:25:54,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 58 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:25:54,641 INFO L231 Difference]: Finished difference. Result has 50 places, 46 transitions, 129 flow [2023-11-29 03:25:54,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=50, PETRI_TRANSITIONS=46} [2023-11-29 03:25:54,642 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -6 predicate places. [2023-11-29 03:25:54,642 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 46 transitions, 129 flow [2023-11-29 03:25:54,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 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) [2023-11-29 03:25:54,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:25:54,643 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:25:54,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 03:25:54,643 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:25:54,644 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:25:54,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1985312175, now seen corresponding path program 2 times [2023-11-29 03:25:54,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:25:54,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421984916] [2023-11-29 03:25:54,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:54,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:25:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:54,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:54,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:25:54,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421984916] [2023-11-29 03:25:54,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421984916] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:25:54,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931047539] [2023-11-29 03:25:54,721 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:25:54,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:25:54,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:25:54,723 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:25:54,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 03:25:54,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-29 03:25:54,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:25:54,883 INFO L262 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 03:25:54,886 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:25:55,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-29 03:25:55,284 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:25:55,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931047539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:25:55,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:25:55,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 6 [2023-11-29 03:25:55,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539440498] [2023-11-29 03:25:55,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:25:55,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:25:55,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:25:55,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:25:55,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:25:55,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 59 [2023-11-29 03:25:55,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 46 transitions, 129 flow. Second operand has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:25:55,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:25:55,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 59 [2023-11-29 03:25:55,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:25:55,592 INFO L124 PetriNetUnfolderBase]: 534/1141 cut-off events. [2023-11-29 03:25:55,592 INFO L125 PetriNetUnfolderBase]: For 353/353 co-relation queries the response was YES. [2023-11-29 03:25:55,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2661 conditions, 1141 events. 534/1141 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6106 event pairs, 384 based on Foata normal form. 1/1118 useless extension candidates. Maximal degree in co-relation 988. Up to 921 conditions per place. [2023-11-29 03:25:55,600 INFO L140 encePairwiseOnDemand]: 56/59 looper letters, 28 selfloop transitions, 1 changer transitions 2/45 dead transitions. [2023-11-29 03:25:55,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 187 flow [2023-11-29 03:25:55,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:25:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:25:55,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2023-11-29 03:25:55,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296610169491526 [2023-11-29 03:25:55,602 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 125 transitions. [2023-11-29 03:25:55,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 125 transitions. [2023-11-29 03:25:55,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:25:55,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 125 transitions. [2023-11-29 03:25:55,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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) [2023-11-29 03:25:55,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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) [2023-11-29 03:25:55,604 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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) [2023-11-29 03:25:55,604 INFO L175 Difference]: Start difference. First operand has 50 places, 46 transitions, 129 flow. Second operand 4 states and 125 transitions. [2023-11-29 03:25:55,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 187 flow [2023-11-29 03:25:55,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 179 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:25:55,606 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 117 flow [2023-11-29 03:25:55,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=117, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2023-11-29 03:25:55,607 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -5 predicate places. [2023-11-29 03:25:55,607 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 117 flow [2023-11-29 03:25:55,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:25:55,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:25:55,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:25:55,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-29 03:25:55,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:25:55,812 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:25:55,813 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:25:55,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1927148215, now seen corresponding path program 1 times [2023-11-29 03:25:55,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:25:55,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451011703] [2023-11-29 03:25:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:55,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:25:55,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:55,900 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:55,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:25:55,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451011703] [2023-11-29 03:25:55,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451011703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:25:55,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637515138] [2023-11-29 03:25:55,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:55,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:25:55,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:25:55,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:25:55,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 03:25:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:56,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:25:56,065 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:25:56,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:56,098 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:25:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:56,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637515138] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:25:56,132 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:25:56,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-29 03:25:56,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389195926] [2023-11-29 03:25:56,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:25:56,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:25:56,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:25:56,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:25:56,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:25:56,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 59 [2023-11-29 03:25:56,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 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) [2023-11-29 03:25:56,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:25:56,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 59 [2023-11-29 03:25:56,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:25:56,497 INFO L124 PetriNetUnfolderBase]: 1200/2352 cut-off events. [2023-11-29 03:25:56,497 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES. [2023-11-29 03:25:56,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5271 conditions, 2352 events. 1200/2352 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 12630 event pairs, 118 based on Foata normal form. 102/2440 useless extension candidates. Maximal degree in co-relation 5262. Up to 469 conditions per place. [2023-11-29 03:25:56,511 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 99 selfloop transitions, 6 changer transitions 0/119 dead transitions. [2023-11-29 03:25:56,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 119 transitions, 551 flow [2023-11-29 03:25:56,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:25:56,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:25:56,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 265 transitions. [2023-11-29 03:25:56,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.748587570621469 [2023-11-29 03:25:56,513 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 265 transitions. [2023-11-29 03:25:56,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 265 transitions. [2023-11-29 03:25:56,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:25:56,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 265 transitions. [2023-11-29 03:25:56,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 03:25:56,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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) [2023-11-29 03:25:56,516 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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) [2023-11-29 03:25:56,516 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 117 flow. Second operand 6 states and 265 transitions. [2023-11-29 03:25:56,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 119 transitions, 551 flow [2023-11-29 03:25:56,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 119 transitions, 550 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:25:56,519 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 156 flow [2023-11-29 03:25:56,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-11-29 03:25:56,520 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-11-29 03:25:56,520 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 156 flow [2023-11-29 03:25:56,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 33.0) internal successors, (231), 7 states have internal predecessors, (231), 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) [2023-11-29 03:25:56,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:25:56,521 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:25:56,527 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 03:25:56,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:25:56,724 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:25:56,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:25:56,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1387627369, now seen corresponding path program 2 times [2023-11-29 03:25:56,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:25:56,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195609281] [2023-11-29 03:25:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:56,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:25:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:56,829 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 24 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 03:25:56,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:25:56,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195609281] [2023-11-29 03:25:56,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195609281] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:25:56,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894468644] [2023-11-29 03:25:56,830 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 03:25:56,830 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:25:56,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:25:56,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:25:56,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 03:25:56,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 03:25:56,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:25:57,001 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 03:25:57,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:25:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-29 03:25:57,036 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 03:25:57,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [894468644] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 03:25:57,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 03:25:57,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-29 03:25:57,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195586027] [2023-11-29 03:25:57,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 03:25:57,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 03:25:57,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:25:57,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 03:25:57,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 03:25:57,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2023-11-29 03:25:57,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2023-11-29 03:25:57,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:25:57,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2023-11-29 03:25:57,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:25:57,395 INFO L124 PetriNetUnfolderBase]: 1054/2143 cut-off events. [2023-11-29 03:25:57,395 INFO L125 PetriNetUnfolderBase]: For 1314/1314 co-relation queries the response was YES. [2023-11-29 03:25:57,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5290 conditions, 2143 events. 1054/2143 cut-off events. For 1314/1314 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10314 event pairs, 302 based on Foata normal form. 0/2040 useless extension candidates. Maximal degree in co-relation 5278. Up to 1011 conditions per place. [2023-11-29 03:25:57,413 INFO L140 encePairwiseOnDemand]: 54/59 looper letters, 51 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-11-29 03:25:57,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 359 flow [2023-11-29 03:25:57,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:25:57,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:25:57,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 153 transitions. [2023-11-29 03:25:57,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6483050847457628 [2023-11-29 03:25:57,415 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 153 transitions. [2023-11-29 03:25:57,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 153 transitions. [2023-11-29 03:25:57,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:25:57,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 153 transitions. [2023-11-29 03:25:57,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2023-11-29 03:25:57,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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) [2023-11-29 03:25:57,417 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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) [2023-11-29 03:25:57,417 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 156 flow. Second operand 4 states and 153 transitions. [2023-11-29 03:25:57,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 359 flow [2023-11-29 03:25:57,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 344 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 03:25:57,423 INFO L231 Difference]: Finished difference. Result has 60 places, 48 transitions, 173 flow [2023-11-29 03:25:57,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=60, PETRI_TRANSITIONS=48} [2023-11-29 03:25:57,424 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-11-29 03:25:57,425 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 48 transitions, 173 flow [2023-11-29 03:25:57,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 4 states have internal predecessors, (130), 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) [2023-11-29 03:25:57,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:25:57,425 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:25:57,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 03:25:57,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:25:57,626 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:25:57,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:25:57,626 INFO L85 PathProgramCache]: Analyzing trace with hash -128449629, now seen corresponding path program 3 times [2023-11-29 03:25:57,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:25:57,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728907315] [2023-11-29 03:25:57,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:57,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:25:57,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:57,788 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:57,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:25:57,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728907315] [2023-11-29 03:25:57,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728907315] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:25:57,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994372280] [2023-11-29 03:25:57,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 03:25:57,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:25:57,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:25:57,790 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:25:57,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 03:25:58,013 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-29 03:25:58,013 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:25:58,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 03:25:58,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:25:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:58,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:25:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:25:58,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994372280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:25:58,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:25:58,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2023-11-29 03:25:58,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544771334] [2023-11-29 03:25:58,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:25:58,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-29 03:25:58,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:25:58,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-29 03:25:58,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-29 03:25:58,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 59 [2023-11-29 03:25:58,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 48 transitions, 173 flow. Second operand has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 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) [2023-11-29 03:25:58,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:25:58,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 59 [2023-11-29 03:25:58,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:25:58,905 INFO L124 PetriNetUnfolderBase]: 2223/4490 cut-off events. [2023-11-29 03:25:58,906 INFO L125 PetriNetUnfolderBase]: For 2526/2526 co-relation queries the response was YES. [2023-11-29 03:25:58,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11128 conditions, 4490 events. 2223/4490 cut-off events. For 2526/2526 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 26743 event pairs, 271 based on Foata normal form. 247/4730 useless extension candidates. Maximal degree in co-relation 11112. Up to 1327 conditions per place. [2023-11-29 03:25:58,940 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 102 selfloop transitions, 6 changer transitions 0/124 dead transitions. [2023-11-29 03:25:58,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 124 transitions, 693 flow [2023-11-29 03:25:58,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 03:25:58,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 03:25:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 257 transitions. [2023-11-29 03:25:58,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7259887005649718 [2023-11-29 03:25:58,942 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 257 transitions. [2023-11-29 03:25:58,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 257 transitions. [2023-11-29 03:25:58,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:25:58,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 257 transitions. [2023-11-29 03:25:58,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 42.833333333333336) internal successors, (257), 6 states have internal predecessors, (257), 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) [2023-11-29 03:25:58,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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) [2023-11-29 03:25:58,945 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 59.0) internal successors, (413), 7 states have internal predecessors, (413), 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) [2023-11-29 03:25:58,945 INFO L175 Difference]: Start difference. First operand has 60 places, 48 transitions, 173 flow. Second operand 6 states and 257 transitions. [2023-11-29 03:25:58,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 124 transitions, 693 flow [2023-11-29 03:25:58,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 124 transitions, 692 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 03:25:58,954 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 212 flow [2023-11-29 03:25:58,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2023-11-29 03:25:58,955 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2023-11-29 03:25:58,955 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 212 flow [2023-11-29 03:25:58,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 34.714285714285715) internal successors, (243), 7 states have internal predecessors, (243), 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) [2023-11-29 03:25:58,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:25:58,955 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:25:58,963 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 03:25:59,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 03:25:59,157 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:25:59,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:25:59,157 INFO L85 PathProgramCache]: Analyzing trace with hash -720532945, now seen corresponding path program 4 times [2023-11-29 03:25:59,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:25:59,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685633940] [2023-11-29 03:25:59,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:25:59,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:25:59,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:25:59,431 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 46 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-29 03:25:59,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:25:59,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685633940] [2023-11-29 03:25:59,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685633940] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:25:59,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1825419484] [2023-11-29 03:25:59,432 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 03:25:59,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:25:59,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:25:59,433 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:25:59,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 03:25:59,657 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 03:25:59,657 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:25:59,660 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-29 03:25:59,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:25:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 03:25:59,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:25:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 14 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-29 03:25:59,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1825419484] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:25:59,820 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:25:59,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2023-11-29 03:25:59,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075070276] [2023-11-29 03:25:59,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:25:59,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 03:25:59,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:25:59,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 03:25:59,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 03:25:59,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2023-11-29 03:25:59,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 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) [2023-11-29 03:25:59,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:25:59,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2023-11-29 03:25:59,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:26:00,117 INFO L124 PetriNetUnfolderBase]: 648/1461 cut-off events. [2023-11-29 03:26:00,117 INFO L125 PetriNetUnfolderBase]: For 1716/1716 co-relation queries the response was YES. [2023-11-29 03:26:00,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4073 conditions, 1461 events. 648/1461 cut-off events. For 1716/1716 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6441 event pairs, 198 based on Foata normal form. 0/1455 useless extension candidates. Maximal degree in co-relation 4054. Up to 640 conditions per place. [2023-11-29 03:26:00,126 INFO L140 encePairwiseOnDemand]: 55/59 looper letters, 54 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2023-11-29 03:26:00,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 430 flow [2023-11-29 03:26:00,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 03:26:00,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 03:26:00,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 151 transitions. [2023-11-29 03:26:00,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6398305084745762 [2023-11-29 03:26:00,128 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 151 transitions. [2023-11-29 03:26:00,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 151 transitions. [2023-11-29 03:26:00,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:26:00,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 151 transitions. [2023-11-29 03:26:00,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.75) internal successors, (151), 4 states have internal predecessors, (151), 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) [2023-11-29 03:26:00,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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) [2023-11-29 03:26:00,130 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 59.0) internal successors, (295), 5 states have internal predecessors, (295), 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) [2023-11-29 03:26:00,130 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 212 flow. Second operand 4 states and 151 transitions. [2023-11-29 03:26:00,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 430 flow [2023-11-29 03:26:00,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 414 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-29 03:26:00,135 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 200 flow [2023-11-29 03:26:00,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2023-11-29 03:26:00,136 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-11-29 03:26:00,136 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 200 flow [2023-11-29 03:26:00,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 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) [2023-11-29 03:26:00,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 03:26:00,136 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:26:00,142 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 03:26:00,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-29 03:26:00,340 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-11-29 03:26:00,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 03:26:00,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1005118969, now seen corresponding path program 5 times [2023-11-29 03:26:00,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 03:26:00,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649445237] [2023-11-29 03:26:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 03:26:00,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 03:26:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 03:26:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 2 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:26:00,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 03:26:00,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649445237] [2023-11-29 03:26:00,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649445237] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 03:26:00,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959657056] [2023-11-29 03:26:00,927 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 03:26:00,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:26:00,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 03:26:00,929 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 03:26:00,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 03:26:01,286 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-11-29 03:26:01,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 03:26:01,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-29 03:26:01,292 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 03:26:01,674 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 4 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:26:01,674 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 03:26:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 03:26:02,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959657056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 03:26:02,231 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 03:26:02,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 30 [2023-11-29 03:26:02,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785496862] [2023-11-29 03:26:02,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 03:26:02,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-29 03:26:02,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 03:26:02,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-29 03:26:02,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2023-11-29 03:26:02,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 59 [2023-11-29 03:26:02,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 200 flow. Second operand has 31 states, 31 states have (on average 30.129032258064516) internal successors, (934), 31 states have internal predecessors, (934), 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) [2023-11-29 03:26:02,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 03:26:02,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 59 [2023-11-29 03:26:02,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 03:26:03,684 INFO L124 PetriNetUnfolderBase]: 704/1514 cut-off events. [2023-11-29 03:26:03,684 INFO L125 PetriNetUnfolderBase]: For 1531/1531 co-relation queries the response was YES. [2023-11-29 03:26:03,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4191 conditions, 1514 events. 704/1514 cut-off events. For 1531/1531 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 6605 event pairs, 51 based on Foata normal form. 34/1546 useless extension candidates. Maximal degree in co-relation 4170. Up to 290 conditions per place. [2023-11-29 03:26:03,690 INFO L140 encePairwiseOnDemand]: 52/59 looper letters, 0 selfloop transitions, 0 changer transitions 150/150 dead transitions. [2023-11-29 03:26:03,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 150 transitions, 886 flow [2023-11-29 03:26:03,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 03:26:03,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 03:26:03,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 445 transitions. [2023-11-29 03:26:03,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285310734463276 [2023-11-29 03:26:03,694 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 445 transitions. [2023-11-29 03:26:03,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 445 transitions. [2023-11-29 03:26:03,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 03:26:03,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 445 transitions. [2023-11-29 03:26:03,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 37.083333333333336) internal successors, (445), 12 states have internal predecessors, (445), 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) [2023-11-29 03:26:03,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 59.0) internal successors, (767), 13 states have internal predecessors, (767), 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) [2023-11-29 03:26:03,699 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 59.0) internal successors, (767), 13 states have internal predecessors, (767), 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) [2023-11-29 03:26:03,699 INFO L175 Difference]: Start difference. First operand has 70 places, 49 transitions, 200 flow. Second operand 12 states and 445 transitions. [2023-11-29 03:26:03,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 150 transitions, 886 flow [2023-11-29 03:26:03,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 150 transitions, 854 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 03:26:03,705 INFO L231 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2023-11-29 03:26:03,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=59, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2023-11-29 03:26:03,706 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-11-29 03:26:03,706 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2023-11-29 03:26:03,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 30.129032258064516) internal successors, (934), 31 states have internal predecessors, (934), 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) [2023-11-29 03:26:03,709 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-11-29 03:26:03,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-11-29 03:26:03,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-11-29 03:26:03,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-11-29 03:26:03,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-11-29 03:26:03,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-11-29 03:26:03,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-11-29 03:26:03,710 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-11-29 03:26:03,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-11-29 03:26:03,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-11-29 03:26:03,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-11-29 03:26:03,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-11-29 03:26:03,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 03:26:03,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 03:26:03,912 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 03:26:03,917 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 03:26:03,917 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 03:26:03,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 03:26:03 BasicIcfg [2023-11-29 03:26:03,923 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 03:26:03,923 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 03:26:03,923 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 03:26:03,924 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 03:26:03,924 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 03:25:51" (3/4) ... [2023-11-29 03:26:03,926 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 03:26:03,930 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-29 03:26:03,931 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-29 03:26:03,937 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 69 nodes and edges [2023-11-29 03:26:03,938 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-29 03:26:03,938 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-29 03:26:03,938 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-29 03:26:04,025 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 03:26:04,028 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 03:26:04,028 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 03:26:04,032 INFO L158 Benchmark]: Toolchain (without parser) took 14267.30ms. Allocated memory was 140.5MB in the beginning and 379.6MB in the end (delta: 239.1MB). Free memory was 100.4MB in the beginning and 243.3MB in the end (delta: -142.9MB). Peak memory consumption was 97.7MB. Max. memory is 16.1GB. [2023-11-29 03:26:04,033 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 140.5MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 03:26:04,033 INFO L158 Benchmark]: CACSL2BoogieTranslator took 700.47ms. Allocated memory is still 140.5MB. Free memory was 99.9MB in the beginning and 73.1MB in the end (delta: 26.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2023-11-29 03:26:04,034 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.57ms. Allocated memory is still 140.5MB. Free memory was 73.1MB in the beginning and 70.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 03:26:04,034 INFO L158 Benchmark]: Boogie Preprocessor took 77.01ms. Allocated memory is still 140.5MB. Free memory was 70.5MB in the beginning and 67.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 03:26:04,035 INFO L158 Benchmark]: RCFGBuilder took 825.23ms. Allocated memory was 140.5MB in the beginning and 178.3MB in the end (delta: 37.7MB). Free memory was 67.3MB in the beginning and 116.5MB in the end (delta: -49.1MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. [2023-11-29 03:26:04,035 INFO L158 Benchmark]: TraceAbstraction took 12488.45ms. Allocated memory was 178.3MB in the beginning and 379.6MB in the end (delta: 201.3MB). Free memory was 115.4MB in the beginning and 248.2MB in the end (delta: -132.8MB). Peak memory consumption was 198.5MB. Max. memory is 16.1GB. [2023-11-29 03:26:04,036 INFO L158 Benchmark]: Witness Printer took 104.95ms. Allocated memory is still 379.6MB. Free memory was 248.2MB in the beginning and 243.3MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 03:26:04,039 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 140.5MB. Free memory is still 114.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 700.47ms. Allocated memory is still 140.5MB. Free memory was 99.9MB in the beginning and 73.1MB in the end (delta: 26.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.57ms. Allocated memory is still 140.5MB. Free memory was 73.1MB in the beginning and 70.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 77.01ms. Allocated memory is still 140.5MB. Free memory was 70.5MB in the beginning and 67.3MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 825.23ms. Allocated memory was 140.5MB in the beginning and 178.3MB in the end (delta: 37.7MB). Free memory was 67.3MB in the beginning and 116.5MB in the end (delta: -49.1MB). Peak memory consumption was 33.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12488.45ms. Allocated memory was 178.3MB in the beginning and 379.6MB in the end (delta: 201.3MB). Free memory was 115.4MB in the beginning and 248.2MB in the end (delta: -132.8MB). Peak memory consumption was 198.5MB. Max. memory is 16.1GB. * Witness Printer took 104.95ms. Allocated memory is still 379.6MB. Free memory was 248.2MB in the beginning and 243.3MB in the end (delta: 4.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 906]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 77 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 12.4s, OverallIterations: 14, TraceHistogramMax: 4, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 724 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 614 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 28 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3632 IncrementalHoareTripleChecker+Invalid, 3661 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 28 mSolverCounterUnsat, 35 mSDtfsCounter, 3632 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 627 GetRequests, 562 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred in iteration=12, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 793 NumberOfCodeBlocks, 780 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 1002 ConstructedInterpolants, 1 QuantifiedInterpolants, 4110 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2381 ConjunctsInSsa, 65 ConjunctsInUnsatCore, 25 InterpolantComputations, 10 PerfectInterpolantSequences, 352/762 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 03:26:04,058 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a716b243-02d5-45db-beaf-cda11b82b300/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE