./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/lazy01.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_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/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_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/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_a9ef8990-e585-43ad-8748-ea3811ee0004/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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:01:25,211 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:01:25,274 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 07:01:25,278 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:01:25,279 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:01:25,300 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:01:25,301 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:01:25,302 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:01:25,302 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:01:25,303 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:01:25,303 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:01:25,304 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:01:25,305 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:01:25,305 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:01:25,306 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:01:25,306 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:01:25,307 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:01:25,307 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:01:25,307 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:01:25,308 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:01:25,308 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 07:01:25,309 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 07:01:25,309 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 07:01:25,309 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:01:25,310 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 07:01:25,310 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 07:01:25,311 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:01:25,311 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:01:25,311 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:01:25,312 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:01:25,312 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:01:25,312 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:01:25,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:01:25,313 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:01:25,313 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:01:25,313 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 07:01:25,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 07:01:25,314 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:01:25,314 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:01:25,314 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:01:25,314 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:01:25,314 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_a9ef8990-e585-43ad-8748-ea3811ee0004/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2023-11-29 07:01:25,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:01:25,547 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:01:25,550 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:01:25,551 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:01:25,551 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:01:25,552 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/lazy01.i [2023-11-29 07:01:28,345 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:01:28,565 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:01:28,566 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/sv-benchmarks/c/pthread/lazy01.i [2023-11-29 07:01:28,582 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/data/c7726e16d/8e92c70c00e34546bf00c96dc656d58f/FLAG0ed446aa0 [2023-11-29 07:01:28,596 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/data/c7726e16d/8e92c70c00e34546bf00c96dc656d58f [2023-11-29 07:01:28,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:01:28,600 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:01:28,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:01:28,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:01:28,605 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:01:28,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:01:28" (1/1) ... [2023-11-29 07:01:28,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42266d08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28, skipping insertion in model container [2023-11-29 07:01:28,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:01:28" (1/1) ... [2023-11-29 07:01:28,645 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:01:28,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:01:28,921 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:01:28,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:01:28,994 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:01:28,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28 WrapperNode [2023-11-29 07:01:28,994 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:01:28,995 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:01:28,995 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:01:28,995 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:01:29,001 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28" (1/1) ... [2023-11-29 07:01:29,015 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28" (1/1) ... [2023-11-29 07:01:29,036 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-11-29 07:01:29,037 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:01:29,038 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:01:29,038 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:01:29,038 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:01:29,047 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28" (1/1) ... [2023-11-29 07:01:29,048 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28" (1/1) ... [2023-11-29 07:01:29,050 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28" (1/1) ... [2023-11-29 07:01:29,065 INFO L175 MemorySlicer]: Split 13 memory accesses to 5 slices as follows [2, 2, 2, 5, 2]. 38 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 0, 0, 5, 0]. The 3 writes are split as follows [0, 1, 1, 0, 1]. [2023-11-29 07:01:29,065 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28" (1/1) ... [2023-11-29 07:01:29,066 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28" (1/1) ... [2023-11-29 07:01:29,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28" (1/1) ... [2023-11-29 07:01:29,074 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28" (1/1) ... [2023-11-29 07:01:29,077 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28" (1/1) ... [2023-11-29 07:01:29,078 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28" (1/1) ... [2023-11-29 07:01:29,082 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:01:29,083 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:01:29,083 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:01:29,083 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:01:29,084 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28" (1/1) ... [2023-11-29 07:01:29,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:01:29,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:29,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:01:29,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:01:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 07:01:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 07:01:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 07:01:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 07:01:29,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-29 07:01:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 07:01:29,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 07:01:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 07:01:29,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 07:01:29,150 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 07:01:29,150 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 07:01:29,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 07:01:29,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 07:01:29,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 07:01:29,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 07:01:29,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 07:01:29,151 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 07:01:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:01:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 07:01:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 07:01:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 07:01:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 07:01:29,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 07:01:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 07:01:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 07:01:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 07:01:29,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:01:29,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:01:29,155 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 07:01:29,297 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:01:29,299 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:01:29,488 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:01:29,593 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:01:29,593 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 07:01:29,594 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:29 BoogieIcfgContainer [2023-11-29 07:01:29,594 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:01:29,597 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:01:29,597 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:01:29,599 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:01:29,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:01:28" (1/3) ... [2023-11-29 07:01:29,600 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd372cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:01:29, skipping insertion in model container [2023-11-29 07:01:29,600 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:28" (2/3) ... [2023-11-29 07:01:29,601 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dd372cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:01:29, skipping insertion in model container [2023-11-29 07:01:29,601 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:29" (3/3) ... [2023-11-29 07:01:29,602 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2023-11-29 07:01:29,616 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:01:29,616 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-29 07:01:29,616 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 07:01:29,667 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 07:01:29,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 58 transitions, 137 flow [2023-11-29 07:01:29,747 INFO L124 PetriNetUnfolderBase]: 2/55 cut-off events. [2023-11-29 07:01:29,747 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 07:01:29,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 2/55 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-11-29 07:01:29,762 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 58 transitions, 137 flow [2023-11-29 07:01:29,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 54 transitions, 126 flow [2023-11-29 07:01:29,775 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:01:29,783 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;@3f73d2b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:01:29,783 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-29 07:01:29,786 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 07:01:29,786 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 07:01:29,786 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 07:01:29,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:29,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 07:01:29,788 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:29,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:29,793 INFO L85 PathProgramCache]: Analyzing trace with hash 7742, now seen corresponding path program 1 times [2023-11-29 07:01:29,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:29,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195689406] [2023-11-29 07:01:29,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:29,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:29,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:30,125 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 07:01:30,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:30,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195689406] [2023-11-29 07:01:30,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195689406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:30,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:30,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 07:01:30,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896410229] [2023-11-29 07:01:30,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:30,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:30,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:30,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:30,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:30,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 58 [2023-11-29 07:01:30,199 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:30,199 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:30,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 58 [2023-11-29 07:01:30,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:30,510 INFO L124 PetriNetUnfolderBase]: 908/1652 cut-off events. [2023-11-29 07:01:30,510 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2023-11-29 07:01:30,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3127 conditions, 1652 events. 908/1652 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9606 event pairs, 908 based on Foata normal form. 148/1664 useless extension candidates. Maximal degree in co-relation 2809. Up to 1376 conditions per place. [2023-11-29 07:01:30,528 INFO L140 encePairwiseOnDemand]: 52/58 looper letters, 23 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-11-29 07:01:30,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 166 flow [2023-11-29 07:01:30,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:30,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:30,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2023-11-29 07:01:30,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.632183908045977 [2023-11-29 07:01:30,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2023-11-29 07:01:30,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2023-11-29 07:01:30,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:30,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2023-11-29 07:01:30,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:30,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:30,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:30,550 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 126 flow. Second operand 3 states and 110 transitions. [2023-11-29 07:01:30,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 166 flow [2023-11-29 07:01:30,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 154 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 07:01:30,560 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 108 flow [2023-11-29 07:01:30,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, 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=108, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2023-11-29 07:01:30,565 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -7 predicate places. [2023-11-29 07:01:30,566 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 108 flow [2023-11-29 07:01:30,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:30,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:30,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 07:01:30,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 07:01:30,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:30,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:30,567 INFO L85 PathProgramCache]: Analyzing trace with hash 7743, now seen corresponding path program 1 times [2023-11-29 07:01:30,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:30,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147941600] [2023-11-29 07:01:30,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:30,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:30,717 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 07:01:30,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:30,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147941600] [2023-11-29 07:01:30,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147941600] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:30,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:30,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 07:01:30,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907214116] [2023-11-29 07:01:30,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:30,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:30,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:30,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:30,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:30,750 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 58 [2023-11-29 07:01:30,751 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 07:01:30,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:30,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 58 [2023-11-29 07:01:30,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:30,883 INFO L124 PetriNetUnfolderBase]: 608/1186 cut-off events. [2023-11-29 07:01:30,883 INFO L125 PetriNetUnfolderBase]: For 31/37 co-relation queries the response was YES. [2023-11-29 07:01:30,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2173 conditions, 1186 events. 608/1186 cut-off events. For 31/37 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6861 event pairs, 608 based on Foata normal form. 126/1199 useless extension candidates. Maximal degree in co-relation 2163. Up to 950 conditions per place. [2023-11-29 07:01:30,891 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 21 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-29 07:01:30,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 150 flow [2023-11-29 07:01:30,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:30,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:30,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2023-11-29 07:01:30,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2023-11-29 07:01:30,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2023-11-29 07:01:30,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2023-11-29 07:01:30,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:30,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2023-11-29 07:01:30,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 07:01:30,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:30,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:30,897 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 108 flow. Second operand 3 states and 112 transitions. [2023-11-29 07:01:30,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 150 flow [2023-11-29 07:01:30,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 07:01:30,900 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 104 flow [2023-11-29 07:01:30,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=51, 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=104, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2023-11-29 07:01:30,912 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -9 predicate places. [2023-11-29 07:01:30,913 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 104 flow [2023-11-29 07:01:30,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 07:01:30,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:30,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 07:01:30,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 07:01:30,914 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:30,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:30,915 INFO L85 PathProgramCache]: Analyzing trace with hash 230881831, now seen corresponding path program 1 times [2023-11-29 07:01:30,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:30,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323087830] [2023-11-29 07:01:30,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:30,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:30,981 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 07:01:30,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:30,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323087830] [2023-11-29 07:01:30,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323087830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:30,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:30,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 07:01:30,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964403429] [2023-11-29 07:01:30,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:30,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:30,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:30,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:30,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:31,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 58 [2023-11-29 07:01:31,012 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 07:01:31,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:31,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 58 [2023-11-29 07:01:31,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:31,172 INFO L124 PetriNetUnfolderBase]: 652/1229 cut-off events. [2023-11-29 07:01:31,172 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-29 07:01:31,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2290 conditions, 1229 events. 652/1229 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6943 event pairs, 652 based on Foata normal form. 0/1143 useless extension candidates. Maximal degree in co-relation 2280. Up to 1024 conditions per place. [2023-11-29 07:01:31,182 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 23 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-29 07:01:31,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 150 flow [2023-11-29 07:01:31,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:31,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:31,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2023-11-29 07:01:31,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2023-11-29 07:01:31,185 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 108 transitions. [2023-11-29 07:01:31,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 108 transitions. [2023-11-29 07:01:31,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:31,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 108 transitions. [2023-11-29 07:01:31,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 07:01:31,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:31,187 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:31,187 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 104 flow. Second operand 3 states and 108 transitions. [2023-11-29 07:01:31,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 150 flow [2023-11-29 07:01:31,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 07:01:31,189 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 100 flow [2023-11-29 07:01:31,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=100, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-11-29 07:01:31,190 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2023-11-29 07:01:31,190 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 100 flow [2023-11-29 07:01:31,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 07:01:31,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:31,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 07:01:31,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 07:01:31,191 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:31,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:31,192 INFO L85 PathProgramCache]: Analyzing trace with hash 230881832, now seen corresponding path program 1 times [2023-11-29 07:01:31,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:31,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871249822] [2023-11-29 07:01:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:31,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:31,282 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 07:01:31,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:31,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871249822] [2023-11-29 07:01:31,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871249822] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:31,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:31,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 07:01:31,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100792031] [2023-11-29 07:01:31,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:31,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:31,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:31,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:31,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:31,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 58 [2023-11-29 07:01:31,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 07:01:31,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:31,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 58 [2023-11-29 07:01:31,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:31,457 INFO L124 PetriNetUnfolderBase]: 608/1150 cut-off events. [2023-11-29 07:01:31,458 INFO L125 PetriNetUnfolderBase]: For 31/37 co-relation queries the response was YES. [2023-11-29 07:01:31,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2137 conditions, 1150 events. 608/1150 cut-off events. For 31/37 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6460 event pairs, 608 based on Foata normal form. 22/1095 useless extension candidates. Maximal degree in co-relation 2127. Up to 950 conditions per place. [2023-11-29 07:01:31,466 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 21 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-29 07:01:31,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 142 flow [2023-11-29 07:01:31,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:31,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:31,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2023-11-29 07:01:31,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2023-11-29 07:01:31,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2023-11-29 07:01:31,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2023-11-29 07:01:31,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:31,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2023-11-29 07:01:31,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 07:01:31,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:31,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:31,471 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 100 flow. Second operand 3 states and 112 transitions. [2023-11-29 07:01:31,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 142 flow [2023-11-29 07:01:31,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 07:01:31,473 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 96 flow [2023-11-29 07:01:31,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-11-29 07:01:31,474 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -13 predicate places. [2023-11-29 07:01:31,474 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 96 flow [2023-11-29 07:01:31,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 07:01:31,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:31,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:31,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 07:01:31,475 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:31,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:31,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1958230310, now seen corresponding path program 1 times [2023-11-29 07:01:31,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:31,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207222032] [2023-11-29 07:01:31,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:31,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:31,533 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 07:01:31,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:31,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207222032] [2023-11-29 07:01:31,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207222032] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:31,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:31,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 07:01:31,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631568464] [2023-11-29 07:01:31,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:31,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:31,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:31,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:31,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:31,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 58 [2023-11-29 07:01:31,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 07:01:31,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:31,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 58 [2023-11-29 07:01:31,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:31,715 INFO L124 PetriNetUnfolderBase]: 652/1235 cut-off events. [2023-11-29 07:01:31,715 INFO L125 PetriNetUnfolderBase]: For 30/35 co-relation queries the response was YES. [2023-11-29 07:01:31,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2296 conditions, 1235 events. 652/1235 cut-off events. For 30/35 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6920 event pairs, 652 based on Foata normal form. 0/1173 useless extension candidates. Maximal degree in co-relation 2286. Up to 1024 conditions per place. [2023-11-29 07:01:31,724 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 23 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-11-29 07:01:31,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 142 flow [2023-11-29 07:01:31,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:31,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:31,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2023-11-29 07:01:31,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2023-11-29 07:01:31,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 108 transitions. [2023-11-29 07:01:31,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 108 transitions. [2023-11-29 07:01:31,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:31,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 108 transitions. [2023-11-29 07:01:31,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 07:01:31,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:31,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:31,728 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 96 flow. Second operand 3 states and 108 transitions. [2023-11-29 07:01:31,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 142 flow [2023-11-29 07:01:31,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 07:01:31,730 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 92 flow [2023-11-29 07:01:31,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-29 07:01:31,731 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -15 predicate places. [2023-11-29 07:01:31,731 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 92 flow [2023-11-29 07:01:31,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 07:01:31,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:31,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:31,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 07:01:31,732 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:31,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:31,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1958230311, now seen corresponding path program 1 times [2023-11-29 07:01:31,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:31,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795222321] [2023-11-29 07:01:31,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:31,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:31,808 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 07:01:31,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:31,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1795222321] [2023-11-29 07:01:31,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1795222321] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:31,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:31,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 07:01:31,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001953911] [2023-11-29 07:01:31,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:31,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:31,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:31,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:31,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:31,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 58 [2023-11-29 07:01:31,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 07:01:31,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:31,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 58 [2023-11-29 07:01:31,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:31,981 INFO L124 PetriNetUnfolderBase]: 608/1126 cut-off events. [2023-11-29 07:01:31,981 INFO L125 PetriNetUnfolderBase]: For 31/37 co-relation queries the response was YES. [2023-11-29 07:01:31,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2113 conditions, 1126 events. 608/1126 cut-off events. For 31/37 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6258 event pairs, 608 based on Foata normal form. 29/1102 useless extension candidates. Maximal degree in co-relation 2103. Up to 950 conditions per place. [2023-11-29 07:01:31,988 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 21 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-11-29 07:01:31,988 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 134 flow [2023-11-29 07:01:31,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:31,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:31,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2023-11-29 07:01:31,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2023-11-29 07:01:31,990 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2023-11-29 07:01:31,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2023-11-29 07:01:31,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:31,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2023-11-29 07:01:31,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 07:01:31,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:31,992 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:31,992 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 92 flow. Second operand 3 states and 112 transitions. [2023-11-29 07:01:31,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 134 flow [2023-11-29 07:01:31,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 07:01:31,994 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 88 flow [2023-11-29 07:01:31,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-11-29 07:01:31,995 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -17 predicate places. [2023-11-29 07:01:31,995 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 88 flow [2023-11-29 07:01:31,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 07:01:31,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:31,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:31,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 07:01:31,996 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:31,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:31,996 INFO L85 PathProgramCache]: Analyzing trace with hash 1196523349, now seen corresponding path program 1 times [2023-11-29 07:01:31,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:31,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898739431] [2023-11-29 07:01:31,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:31,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:32,044 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 07:01:32,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:32,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898739431] [2023-11-29 07:01:32,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898739431] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:32,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:32,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:01:32,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125350090] [2023-11-29 07:01:32,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:32,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:32,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:32,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:32,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 58 [2023-11-29 07:01:32,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:01:32,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:32,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 58 [2023-11-29 07:01:32,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:32,192 INFO L124 PetriNetUnfolderBase]: 588/1102 cut-off events. [2023-11-29 07:01:32,192 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-29 07:01:32,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2061 conditions, 1102 events. 588/1102 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6177 event pairs, 178 based on Foata normal form. 4/1090 useless extension candidates. Maximal degree in co-relation 2051. Up to 828 conditions per place. [2023-11-29 07:01:32,200 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 32 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-11-29 07:01:32,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 184 flow [2023-11-29 07:01:32,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:32,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:32,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2023-11-29 07:01:32,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7413793103448276 [2023-11-29 07:01:32,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 129 transitions. [2023-11-29 07:01:32,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 129 transitions. [2023-11-29 07:01:32,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:32,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 129 transitions. [2023-11-29 07:01:32,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:32,203 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:32,203 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:32,203 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 88 flow. Second operand 3 states and 129 transitions. [2023-11-29 07:01:32,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 184 flow [2023-11-29 07:01:32,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 07:01:32,206 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 103 flow [2023-11-29 07:01:32,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-11-29 07:01:32,207 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -16 predicate places. [2023-11-29 07:01:32,207 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 103 flow [2023-11-29 07:01:32,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:01:32,207 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:32,207 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:32,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 07:01:32,208 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:32,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:32,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1035733903, now seen corresponding path program 1 times [2023-11-29 07:01:32,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:32,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141477344] [2023-11-29 07:01:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:32,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:32,290 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 07:01:32,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:32,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141477344] [2023-11-29 07:01:32,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141477344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:32,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:32,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:01:32,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646396782] [2023-11-29 07:01:32,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:32,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:32,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:32,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:32,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:32,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 58 [2023-11-29 07:01:32,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 103 flow. Second operand has 3 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 07:01:32,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:32,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 58 [2023-11-29 07:01:32,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:32,408 INFO L124 PetriNetUnfolderBase]: 303/667 cut-off events. [2023-11-29 07:01:32,408 INFO L125 PetriNetUnfolderBase]: For 47/52 co-relation queries the response was YES. [2023-11-29 07:01:32,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 667 events. 303/667 cut-off events. For 47/52 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3321 event pairs, 108 based on Foata normal form. 81/741 useless extension candidates. Maximal degree in co-relation 758. Up to 327 conditions per place. [2023-11-29 07:01:32,413 INFO L140 encePairwiseOnDemand]: 52/58 looper letters, 29 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2023-11-29 07:01:32,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 197 flow [2023-11-29 07:01:32,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:32,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:32,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2023-11-29 07:01:32,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7413793103448276 [2023-11-29 07:01:32,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 129 transitions. [2023-11-29 07:01:32,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 129 transitions. [2023-11-29 07:01:32,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:32,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 129 transitions. [2023-11-29 07:01:32,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:32,416 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:32,417 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:32,417 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 103 flow. Second operand 3 states and 129 transitions. [2023-11-29 07:01:32,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 197 flow [2023-11-29 07:01:32,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 07:01:32,419 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 112 flow [2023-11-29 07:01:32,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-29 07:01:32,420 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -15 predicate places. [2023-11-29 07:01:32,420 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 112 flow [2023-11-29 07:01:32,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 07:01:32,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:32,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:32,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 07:01:32,421 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:32,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:32,421 INFO L85 PathProgramCache]: Analyzing trace with hash -253832041, now seen corresponding path program 1 times [2023-11-29 07:01:32,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:32,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252742772] [2023-11-29 07:01:32,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:32,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:32,485 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 07:01:32,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:32,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252742772] [2023-11-29 07:01:32,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252742772] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:32,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:32,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:01:32,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469085622] [2023-11-29 07:01:32,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:32,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:01:32,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:32,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:01:32,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:01:32,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 58 [2023-11-29 07:01:32,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:32,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:32,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 58 [2023-11-29 07:01:32,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:32,616 INFO L124 PetriNetUnfolderBase]: 298/644 cut-off events. [2023-11-29 07:01:32,616 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-11-29 07:01:32,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1428 conditions, 644 events. 298/644 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3192 event pairs, 65 based on Foata normal form. 5/647 useless extension candidates. Maximal degree in co-relation 263. Up to 364 conditions per place. [2023-11-29 07:01:32,621 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 40 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2023-11-29 07:01:32,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 256 flow [2023-11-29 07:01:32,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:01:32,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 07:01:32,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2023-11-29 07:01:32,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.728448275862069 [2023-11-29 07:01:32,623 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 169 transitions. [2023-11-29 07:01:32,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 169 transitions. [2023-11-29 07:01:32,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:32,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 169 transitions. [2023-11-29 07:01:32,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 07:01:32,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 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 07:01:32,625 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 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 07:01:32,625 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 112 flow. Second operand 4 states and 169 transitions. [2023-11-29 07:01:32,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 256 flow [2023-11-29 07:01:32,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 07:01:32,628 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 118 flow [2023-11-29 07:01:32,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-11-29 07:01:32,629 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -12 predicate places. [2023-11-29 07:01:32,629 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 118 flow [2023-11-29 07:01:32,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:32,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:32,629 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:32,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 07:01:32,629 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:32,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:32,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1632936301, now seen corresponding path program 1 times [2023-11-29 07:01:32,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:32,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137635099] [2023-11-29 07:01:32,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:32,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:32,685 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 07:01:32,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 07:01:32,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137635099] [2023-11-29 07:01:32,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137635099] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:32,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:32,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:01:32,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466488404] [2023-11-29 07:01:32,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:32,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:01:32,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 07:01:32,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:01:32,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:01:32,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 58 [2023-11-29 07:01:32,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 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 07:01:32,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:32,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 58 [2023-11-29 07:01:32,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:32,820 INFO L124 PetriNetUnfolderBase]: 341/709 cut-off events. [2023-11-29 07:01:32,820 INFO L125 PetriNetUnfolderBase]: For 224/226 co-relation queries the response was YES. [2023-11-29 07:01:32,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1569 conditions, 709 events. 341/709 cut-off events. For 224/226 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3424 event pairs, 91 based on Foata normal form. 4/711 useless extension candidates. Maximal degree in co-relation 519. Up to 317 conditions per place. [2023-11-29 07:01:32,825 INFO L140 encePairwiseOnDemand]: 53/58 looper letters, 45 selfloop transitions, 6 changer transitions 0/66 dead transitions. [2023-11-29 07:01:32,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 66 transitions, 283 flow [2023-11-29 07:01:32,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:01:32,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 07:01:32,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 172 transitions. [2023-11-29 07:01:32,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7413793103448276 [2023-11-29 07:01:32,827 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 172 transitions. [2023-11-29 07:01:32,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 172 transitions. [2023-11-29 07:01:32,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:32,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 172 transitions. [2023-11-29 07:01:32,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 07:01:32,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 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 07:01:32,829 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 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 07:01:32,830 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 118 flow. Second operand 4 states and 172 transitions. [2023-11-29 07:01:32,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 66 transitions, 283 flow [2023-11-29 07:01:32,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 66 transitions, 275 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-29 07:01:32,846 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 137 flow [2023-11-29 07:01:32,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=137, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2023-11-29 07:01:32,846 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -9 predicate places. [2023-11-29 07:01:32,847 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 137 flow [2023-11-29 07:01:32,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.75) internal successors, (131), 4 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 07:01:32,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:32,847 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] [2023-11-29 07:01:32,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 07:01:32,848 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:32,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:32,848 INFO L85 PathProgramCache]: Analyzing trace with hash -332765543, now seen corresponding path program 1 times [2023-11-29 07:01:32,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 07:01:32,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254641234] [2023-11-29 07:01:32,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:32,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 07:01:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:01:32,874 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:01:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:01:32,912 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-29 07:01:32,912 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 07:01:32,913 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (17 of 18 remaining) [2023-11-29 07:01:32,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2023-11-29 07:01:32,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-11-29 07:01:32,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2023-11-29 07:01:32,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-11-29 07:01:32,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-11-29 07:01:32,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2023-11-29 07:01:32,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2023-11-29 07:01:32,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2023-11-29 07:01:32,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 18 remaining) [2023-11-29 07:01:32,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2023-11-29 07:01:32,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-11-29 07:01:32,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-11-29 07:01:32,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-11-29 07:01:32,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (3 of 18 remaining) [2023-11-29 07:01:32,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 18 remaining) [2023-11-29 07:01:32,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 18 remaining) [2023-11-29 07:01:32,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 18 remaining) [2023-11-29 07:01:32,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-29 07:01:32,919 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:32,924 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 07:01:32,924 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 07:01:32,952 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-29 07:01:32,953 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated [2023-11-29 07:01:32,954 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-29 07:01:32,954 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-29 07:01:32,954 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-29 07:01:32,955 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-29 07:01:32,955 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-29 07:01:32,955 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-29 07:01:32,956 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-29 07:01:32,956 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-29 07:01:32,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:01:32 BasicIcfg [2023-11-29 07:01:32,963 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 07:01:32,964 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 07:01:32,964 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 07:01:32,964 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 07:01:32,964 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:29" (3/4) ... [2023-11-29 07:01:32,966 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 07:01:32,967 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 07:01:32,968 INFO L158 Benchmark]: Toolchain (without parser) took 4368.15ms. Allocated memory was 155.2MB in the beginning and 197.1MB in the end (delta: 41.9MB). Free memory was 122.6MB in the beginning and 138.4MB in the end (delta: -15.8MB). Peak memory consumption was 28.2MB. Max. memory is 16.1GB. [2023-11-29 07:01:32,968 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 115.3MB. Free memory is still 69.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:01:32,969 INFO L158 Benchmark]: CACSL2BoogieTranslator took 393.43ms. Allocated memory is still 155.2MB. Free memory was 122.2MB in the beginning and 102.5MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-29 07:01:32,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.26ms. Allocated memory is still 155.2MB. Free memory was 102.5MB in the beginning and 100.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 07:01:32,969 INFO L158 Benchmark]: Boogie Preprocessor took 44.67ms. Allocated memory is still 155.2MB. Free memory was 100.5MB in the beginning and 97.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 07:01:32,970 INFO L158 Benchmark]: RCFGBuilder took 511.03ms. Allocated memory is still 155.2MB. Free memory was 97.7MB in the beginning and 69.4MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-29 07:01:32,970 INFO L158 Benchmark]: TraceAbstraction took 3366.64ms. Allocated memory was 155.2MB in the beginning and 197.1MB in the end (delta: 41.9MB). Free memory was 68.7MB in the beginning and 138.4MB in the end (delta: -69.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:01:32,970 INFO L158 Benchmark]: Witness Printer took 3.53ms. Allocated memory is still 197.1MB. Free memory is still 138.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:01:32,973 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 115.3MB. Free memory is still 69.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 393.43ms. Allocated memory is still 155.2MB. Free memory was 122.2MB in the beginning and 102.5MB in the end (delta: 19.7MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.26ms. Allocated memory is still 155.2MB. Free memory was 102.5MB in the beginning and 100.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.67ms. Allocated memory is still 155.2MB. Free memory was 100.5MB in the beginning and 97.7MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 511.03ms. Allocated memory is still 155.2MB. Free memory was 97.7MB in the beginning and 69.4MB in the end (delta: 28.3MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * TraceAbstraction took 3366.64ms. Allocated memory was 155.2MB in the beginning and 197.1MB in the end (delta: 41.9MB). Free memory was 68.7MB in the beginning and 138.4MB in the end (delta: -69.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.53ms. Allocated memory is still 197.1MB. Free memory is still 138.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, t1={6:0}, t2={5:0}, t3={7:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={6:0}, t2={5:0}, t3={7:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={6:0}, t2={5:0}, t3={7:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 [L722] CALL 3 reach_error() [L20] COND FALSE 3 !(0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L20] 3 __assert_fail ("0", "lazy01.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 83 locations, 18 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: 3.2s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 401 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 242 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 18 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 518 IncrementalHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 18 mSolverCounterUnsat, 45 mSDtfsCounter, 518 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=10, InterpolantAutomatonStates: 32, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 371 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 07:01:32,998 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/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_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/lazy01.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/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 b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 07:01:34,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 07:01:34,950 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 07:01:34,956 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 07:01:34,957 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 07:01:34,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 07:01:34,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 07:01:34,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 07:01:34,988 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 07:01:34,989 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 07:01:34,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 07:01:34,990 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 07:01:34,991 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 07:01:34,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 07:01:34,992 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 07:01:34,992 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 07:01:34,993 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 07:01:34,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 07:01:34,994 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 07:01:34,994 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 07:01:34,995 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 07:01:34,995 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 07:01:34,996 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 07:01:34,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 07:01:34,997 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 07:01:34,997 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 07:01:34,998 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 07:01:34,998 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 07:01:34,999 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 07:01:34,999 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 07:01:34,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 07:01:35,000 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 07:01:35,000 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 07:01:35,000 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 07:01:35,001 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:01:35,001 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 07:01:35,001 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 07:01:35,002 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 07:01:35,002 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 07:01:35,002 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 07:01:35,002 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 07:01:35,003 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 07:01:35,003 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 07:01:35,003 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 07:01:35,003 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_a9ef8990-e585-43ad-8748-ea3811ee0004/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5d87933b05ad3566f9bc28daac5c0aeceb8a45433a1cac3d51a8d34f7f284f0 [2023-11-29 07:01:35,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 07:01:35,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 07:01:35,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 07:01:35,322 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 07:01:35,322 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 07:01:35,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/pthread/lazy01.i [2023-11-29 07:01:38,142 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 07:01:38,379 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 07:01:38,380 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/sv-benchmarks/c/pthread/lazy01.i [2023-11-29 07:01:38,396 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/data/ab0162135/307eab15bda8451cabb0479141a3936d/FLAGb5be46a8b [2023-11-29 07:01:38,411 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/data/ab0162135/307eab15bda8451cabb0479141a3936d [2023-11-29 07:01:38,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 07:01:38,415 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 07:01:38,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 07:01:38,417 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 07:01:38,422 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 07:01:38,423 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:01:38" (1/1) ... [2023-11-29 07:01:38,424 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce9a21f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38, skipping insertion in model container [2023-11-29 07:01:38,424 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:01:38" (1/1) ... [2023-11-29 07:01:38,472 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 07:01:38,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:01:38,798 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 07:01:38,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 07:01:38,886 INFO L206 MainTranslator]: Completed translation [2023-11-29 07:01:38,886 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38 WrapperNode [2023-11-29 07:01:38,886 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 07:01:38,887 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 07:01:38,888 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 07:01:38,888 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 07:01:38,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38" (1/1) ... [2023-11-29 07:01:38,912 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38" (1/1) ... [2023-11-29 07:01:38,935 INFO L138 Inliner]: procedures = 174, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2023-11-29 07:01:38,936 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 07:01:38,937 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 07:01:38,937 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 07:01:38,937 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 07:01:38,948 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38" (1/1) ... [2023-11-29 07:01:38,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38" (1/1) ... [2023-11-29 07:01:38,952 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38" (1/1) ... [2023-11-29 07:01:38,969 INFO L175 MemorySlicer]: Split 13 memory accesses to 5 slices as follows [2, 5, 2, 2, 2]. 38 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5, 0, 0, 0]. The 3 writes are split as follows [0, 0, 1, 1, 1]. [2023-11-29 07:01:38,969 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38" (1/1) ... [2023-11-29 07:01:38,969 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38" (1/1) ... [2023-11-29 07:01:38,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38" (1/1) ... [2023-11-29 07:01:38,993 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38" (1/1) ... [2023-11-29 07:01:38,996 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38" (1/1) ... [2023-11-29 07:01:38,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38" (1/1) ... [2023-11-29 07:01:39,002 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 07:01:39,003 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 07:01:39,003 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 07:01:39,003 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 07:01:39,004 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38" (1/1) ... [2023-11-29 07:01:39,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 07:01:39,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 07:01:39,055 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 07:01:39,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 07:01:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 07:01:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 07:01:39,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 07:01:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 07:01:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-29 07:01:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 07:01:39,108 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 07:01:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 07:01:39,108 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 07:01:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-29 07:01:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-29 07:01:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 07:01:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 07:01:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 07:01:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 07:01:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 07:01:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 07:01:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 07:01:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 07:01:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-29 07:01:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 07:01:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 07:01:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 07:01:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 07:01:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-29 07:01:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2023-11-29 07:01:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2023-11-29 07:01:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2023-11-29 07:01:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2023-11-29 07:01:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#4 [2023-11-29 07:01:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 07:01:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 07:01:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 07:01:39,114 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 07:01:39,274 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 07:01:39,276 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 07:01:39,530 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 07:01:39,656 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 07:01:39,656 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 07:01:39,656 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:39 BoogieIcfgContainer [2023-11-29 07:01:39,657 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 07:01:39,659 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 07:01:39,659 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 07:01:39,662 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 07:01:39,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:01:38" (1/3) ... [2023-11-29 07:01:39,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707de8e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:01:39, skipping insertion in model container [2023-11-29 07:01:39,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:01:38" (2/3) ... [2023-11-29 07:01:39,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@707de8e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:01:39, skipping insertion in model container [2023-11-29 07:01:39,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:39" (3/3) ... [2023-11-29 07:01:39,665 INFO L112 eAbstractionObserver]: Analyzing ICFG lazy01.i [2023-11-29 07:01:39,706 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 07:01:39,706 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-29 07:01:39,706 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 07:01:39,757 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-29 07:01:39,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 58 transitions, 137 flow [2023-11-29 07:01:39,821 INFO L124 PetriNetUnfolderBase]: 2/55 cut-off events. [2023-11-29 07:01:39,821 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-29 07:01:39,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68 conditions, 55 events. 2/55 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 100 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-11-29 07:01:39,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 66 places, 58 transitions, 137 flow [2023-11-29 07:01:39,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 54 transitions, 126 flow [2023-11-29 07:01:39,838 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 07:01:39,844 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;@41e8588, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 07:01:39,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-29 07:01:39,848 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 07:01:39,848 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-29 07:01:39,848 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 07:01:39,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:39,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 07:01:39,849 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:39,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:39,854 INFO L85 PathProgramCache]: Analyzing trace with hash 7806, now seen corresponding path program 1 times [2023-11-29 07:01:39,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 07:01:39,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36929256] [2023-11-29 07:01:39,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:39,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:39,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 07:01:39,869 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 07:01:39,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-29 07:01:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:39,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:01:39,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:40,095 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-29 07:01:40,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-29 07:01:40,123 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 07:01:40,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-29 07:01:40,164 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 07:01:40,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:40,165 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 07:01:40,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36929256] [2023-11-29 07:01:40,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36929256] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:40,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:40,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 07:01:40,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848007874] [2023-11-29 07:01:40,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:40,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:40,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 07:01:40,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:40,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:40,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 58 [2023-11-29 07:01:40,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 54 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:40,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:40,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 58 [2023-11-29 07:01:40,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:40,666 INFO L124 PetriNetUnfolderBase]: 908/1652 cut-off events. [2023-11-29 07:01:40,666 INFO L125 PetriNetUnfolderBase]: For 83/83 co-relation queries the response was YES. [2023-11-29 07:01:40,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3127 conditions, 1652 events. 908/1652 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 9606 event pairs, 908 based on Foata normal form. 148/1664 useless extension candidates. Maximal degree in co-relation 2809. Up to 1376 conditions per place. [2023-11-29 07:01:40,685 INFO L140 encePairwiseOnDemand]: 52/58 looper letters, 23 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-11-29 07:01:40,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 166 flow [2023-11-29 07:01:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:40,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:40,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2023-11-29 07:01:40,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.632183908045977 [2023-11-29 07:01:40,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2023-11-29 07:01:40,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2023-11-29 07:01:40,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:40,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2023-11-29 07:01:40,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:40,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:40,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:40,709 INFO L175 Difference]: Start difference. First operand has 62 places, 54 transitions, 126 flow. Second operand 3 states and 110 transitions. [2023-11-29 07:01:40,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 166 flow [2023-11-29 07:01:40,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 49 transitions, 154 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-29 07:01:40,717 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 108 flow [2023-11-29 07:01:40,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, 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=108, PETRI_PLACES=55, PETRI_TRANSITIONS=49} [2023-11-29 07:01:40,723 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -7 predicate places. [2023-11-29 07:01:40,723 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 108 flow [2023-11-29 07:01:40,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:40,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:40,724 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-29 07:01:40,732 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-29 07:01:40,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:40,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:40,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:40,926 INFO L85 PathProgramCache]: Analyzing trace with hash 7807, now seen corresponding path program 1 times [2023-11-29 07:01:40,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 07:01:40,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868694606] [2023-11-29 07:01:40,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:40,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:40,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 07:01:40,928 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 07:01:40,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-29 07:01:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:41,033 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-29 07:01:41,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:41,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 07:01:41,075 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-29 07:01:41,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2023-11-29 07:01:41,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 07:01:41,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 07:01:41,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2023-11-29 07:01:41,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-29 07:01:41,155 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 07:01:41,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:41,156 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 07:01:41,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868694606] [2023-11-29 07:01:41,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868694606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:41,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:41,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 07:01:41,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956027196] [2023-11-29 07:01:41,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:41,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:41,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 07:01:41,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:41,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:41,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 58 [2023-11-29 07:01:41,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 07:01:41,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:41,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 58 [2023-11-29 07:01:41,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:41,443 INFO L124 PetriNetUnfolderBase]: 608/1186 cut-off events. [2023-11-29 07:01:41,443 INFO L125 PetriNetUnfolderBase]: For 31/37 co-relation queries the response was YES. [2023-11-29 07:01:41,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2173 conditions, 1186 events. 608/1186 cut-off events. For 31/37 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6861 event pairs, 608 based on Foata normal form. 126/1199 useless extension candidates. Maximal degree in co-relation 2163. Up to 950 conditions per place. [2023-11-29 07:01:41,451 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 21 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-11-29 07:01:41,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 47 transitions, 150 flow [2023-11-29 07:01:41,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:41,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2023-11-29 07:01:41,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2023-11-29 07:01:41,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2023-11-29 07:01:41,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2023-11-29 07:01:41,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:41,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2023-11-29 07:01:41,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 07:01:41,456 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:41,457 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:41,457 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 108 flow. Second operand 3 states and 112 transitions. [2023-11-29 07:01:41,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 47 transitions, 150 flow [2023-11-29 07:01:41,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 07:01:41,459 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 104 flow [2023-11-29 07:01:41,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=51, 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=104, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2023-11-29 07:01:41,461 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -9 predicate places. [2023-11-29 07:01:41,461 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 104 flow [2023-11-29 07:01:41,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 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 07:01:41,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:41,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 07:01:41,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-29 07:01:41,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:41,662 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:41,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:41,662 INFO L85 PathProgramCache]: Analyzing trace with hash 232790441, now seen corresponding path program 1 times [2023-11-29 07:01:41,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 07:01:41,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019465845] [2023-11-29 07:01:41,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:41,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:41,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 07:01:41,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 07:01:41,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-29 07:01:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:41,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:01:41,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:41,776 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 07:01:41,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 07:01:41,804 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 07:01:41,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-29 07:01:41,825 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 07:01:41,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-29 07:01:41,907 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 07:01:41,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:41,907 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 07:01:41,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019465845] [2023-11-29 07:01:41,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019465845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:41,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:41,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 07:01:41,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543493073] [2023-11-29 07:01:41,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:41,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:41,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 07:01:41,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:41,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:41,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 58 [2023-11-29 07:01:41,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 07:01:41,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:41,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 58 [2023-11-29 07:01:41,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:42,162 INFO L124 PetriNetUnfolderBase]: 652/1229 cut-off events. [2023-11-29 07:01:42,162 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-29 07:01:42,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2290 conditions, 1229 events. 652/1229 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6943 event pairs, 652 based on Foata normal form. 0/1143 useless extension candidates. Maximal degree in co-relation 2280. Up to 1024 conditions per place. [2023-11-29 07:01:42,169 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 23 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-11-29 07:01:42,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 150 flow [2023-11-29 07:01:42,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:42,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:42,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2023-11-29 07:01:42,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2023-11-29 07:01:42,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 108 transitions. [2023-11-29 07:01:42,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 108 transitions. [2023-11-29 07:01:42,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:42,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 108 transitions. [2023-11-29 07:01:42,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 07:01:42,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:42,174 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:42,174 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 104 flow. Second operand 3 states and 108 transitions. [2023-11-29 07:01:42,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 150 flow [2023-11-29 07:01:42,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 07:01:42,176 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 100 flow [2023-11-29 07:01:42,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=49, 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=100, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-11-29 07:01:42,177 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -11 predicate places. [2023-11-29 07:01:42,177 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 100 flow [2023-11-29 07:01:42,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 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 07:01:42,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:42,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-29 07:01:42,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-29 07:01:42,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:42,379 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:42,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:42,379 INFO L85 PathProgramCache]: Analyzing trace with hash 232790442, now seen corresponding path program 1 times [2023-11-29 07:01:42,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 07:01:42,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1002899113] [2023-11-29 07:01:42,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:42,380 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:42,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 07:01:42,381 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 07:01:42,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-29 07:01:42,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:42,463 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 07:01:42,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:42,486 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-29 07:01:42,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2023-11-29 07:01:42,507 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-29 07:01:42,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2023-11-29 07:01:42,537 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-29 07:01:42,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2023-11-29 07:01:42,640 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 07:01:42,641 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:42,641 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 07:01:42,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1002899113] [2023-11-29 07:01:42,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1002899113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:42,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:42,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 07:01:42,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739946575] [2023-11-29 07:01:42,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:42,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:42,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 07:01:42,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:42,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:42,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 58 [2023-11-29 07:01:42,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 45 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 07:01:42,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:42,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 58 [2023-11-29 07:01:42,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:42,920 INFO L124 PetriNetUnfolderBase]: 608/1150 cut-off events. [2023-11-29 07:01:42,920 INFO L125 PetriNetUnfolderBase]: For 31/37 co-relation queries the response was YES. [2023-11-29 07:01:42,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2137 conditions, 1150 events. 608/1150 cut-off events. For 31/37 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6460 event pairs, 608 based on Foata normal form. 22/1095 useless extension candidates. Maximal degree in co-relation 2127. Up to 950 conditions per place. [2023-11-29 07:01:42,929 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 21 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-11-29 07:01:42,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 43 transitions, 142 flow [2023-11-29 07:01:42,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:42,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:42,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2023-11-29 07:01:42,931 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2023-11-29 07:01:42,931 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2023-11-29 07:01:42,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2023-11-29 07:01:42,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:42,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2023-11-29 07:01:42,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 07:01:42,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:42,933 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:42,933 INFO L175 Difference]: Start difference. First operand has 51 places, 45 transitions, 100 flow. Second operand 3 states and 112 transitions. [2023-11-29 07:01:42,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 43 transitions, 142 flow [2023-11-29 07:01:42,934 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 43 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 07:01:42,935 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 96 flow [2023-11-29 07:01:42,935 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-11-29 07:01:42,936 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -13 predicate places. [2023-11-29 07:01:42,936 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 96 flow [2023-11-29 07:01:42,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 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 07:01:42,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:42,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:42,940 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-29 07:01:43,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:43,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:43,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:43,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1311909338, now seen corresponding path program 1 times [2023-11-29 07:01:43,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 07:01:43,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491362860] [2023-11-29 07:01:43,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:43,139 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:43,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 07:01:43,140 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 07:01:43,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-29 07:01:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:43,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:01:43,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:43,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2023-11-29 07:01:43,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 07:01:43,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 07:01:43,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 07:01:43,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 07:01:43,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 07:01:43,252 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 07:01:43,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 07:01:43,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 07:01:43,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 07:01:43,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 07:01:43,279 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 07:01:43,279 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:43,279 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 07:01:43,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491362860] [2023-11-29 07:01:43,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491362860] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:43,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:43,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 07:01:43,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048264658] [2023-11-29 07:01:43,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:43,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:43,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 07:01:43,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:43,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:43,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 27 out of 58 [2023-11-29 07:01:43,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 07:01:43,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:43,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 27 of 58 [2023-11-29 07:01:43,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:43,456 INFO L124 PetriNetUnfolderBase]: 652/1235 cut-off events. [2023-11-29 07:01:43,456 INFO L125 PetriNetUnfolderBase]: For 30/35 co-relation queries the response was YES. [2023-11-29 07:01:43,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2296 conditions, 1235 events. 652/1235 cut-off events. For 30/35 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6920 event pairs, 652 based on Foata normal form. 0/1173 useless extension candidates. Maximal degree in co-relation 2286. Up to 1024 conditions per place. [2023-11-29 07:01:43,463 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 23 selfloop transitions, 2 changer transitions 0/41 dead transitions. [2023-11-29 07:01:43,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 41 transitions, 142 flow [2023-11-29 07:01:43,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:43,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:43,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 108 transitions. [2023-11-29 07:01:43,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6206896551724138 [2023-11-29 07:01:43,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 108 transitions. [2023-11-29 07:01:43,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 108 transitions. [2023-11-29 07:01:43,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:43,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 108 transitions. [2023-11-29 07:01:43,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 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 07:01:43,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:43,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:43,467 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 96 flow. Second operand 3 states and 108 transitions. [2023-11-29 07:01:43,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 41 transitions, 142 flow [2023-11-29 07:01:43,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 41 transitions, 138 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 07:01:43,469 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 92 flow [2023-11-29 07:01:43,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-29 07:01:43,470 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -15 predicate places. [2023-11-29 07:01:43,470 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 92 flow [2023-11-29 07:01:43,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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 07:01:43,470 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:43,470 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:43,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-29 07:01:43,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:43,671 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:43,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:43,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1311909337, now seen corresponding path program 1 times [2023-11-29 07:01:43,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 07:01:43,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1954933376] [2023-11-29 07:01:43,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:43,672 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:43,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 07:01:43,673 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 07:01:43,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-29 07:01:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:43,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:01:43,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:43,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-29 07:01:43,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 07:01:43,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 07:01:43,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 07:01:43,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 07:01:43,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 07:01:43,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 07:01:43,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 07:01:43,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-29 07:01:43,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 07:01:43,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-29 07:01:43,840 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 07:01:43,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:43,841 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 07:01:43,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1954933376] [2023-11-29 07:01:43,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1954933376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:43,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:43,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 07:01:43,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338957680] [2023-11-29 07:01:43,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:43,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:43,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 07:01:43,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:43,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:43,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 58 [2023-11-29 07:01:43,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 92 flow. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 07:01:43,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:43,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 58 [2023-11-29 07:01:43,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:44,018 INFO L124 PetriNetUnfolderBase]: 608/1126 cut-off events. [2023-11-29 07:01:44,018 INFO L125 PetriNetUnfolderBase]: For 31/37 co-relation queries the response was YES. [2023-11-29 07:01:44,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2113 conditions, 1126 events. 608/1126 cut-off events. For 31/37 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6258 event pairs, 608 based on Foata normal form. 29/1102 useless extension candidates. Maximal degree in co-relation 2103. Up to 950 conditions per place. [2023-11-29 07:01:44,024 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 21 selfloop transitions, 2 changer transitions 0/39 dead transitions. [2023-11-29 07:01:44,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 134 flow [2023-11-29 07:01:44,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:44,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:44,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 112 transitions. [2023-11-29 07:01:44,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6436781609195402 [2023-11-29 07:01:44,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 112 transitions. [2023-11-29 07:01:44,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 112 transitions. [2023-11-29 07:01:44,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:44,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 112 transitions. [2023-11-29 07:01:44,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 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 07:01:44,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:44,028 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:44,028 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 92 flow. Second operand 3 states and 112 transitions. [2023-11-29 07:01:44,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 134 flow [2023-11-29 07:01:44,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 130 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 07:01:44,030 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 88 flow [2023-11-29 07:01:44,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-11-29 07:01:44,031 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -17 predicate places. [2023-11-29 07:01:44,031 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 88 flow [2023-11-29 07:01:44,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 07:01:44,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:44,032 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:44,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2023-11-29 07:01:44,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:44,233 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:44,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:44,233 INFO L85 PathProgramCache]: Analyzing trace with hash 589825431, now seen corresponding path program 1 times [2023-11-29 07:01:44,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 07:01:44,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182844957] [2023-11-29 07:01:44,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:44,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:44,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 07:01:44,234 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 07:01:44,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-29 07:01:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:44,300 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 07:01:44,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:44,321 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 07:01:44,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:44,322 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 07:01:44,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182844957] [2023-11-29 07:01:44,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182844957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:44,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:44,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 07:01:44,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120973767] [2023-11-29 07:01:44,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:44,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:44,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 07:01:44,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:44,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:44,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 58 [2023-11-29 07:01:44,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:01:44,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:44,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 58 [2023-11-29 07:01:44,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:44,492 INFO L124 PetriNetUnfolderBase]: 588/1102 cut-off events. [2023-11-29 07:01:44,492 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2023-11-29 07:01:44,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2061 conditions, 1102 events. 588/1102 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6167 event pairs, 178 based on Foata normal form. 4/1090 useless extension candidates. Maximal degree in co-relation 2051. Up to 828 conditions per place. [2023-11-29 07:01:44,500 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 32 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-11-29 07:01:44,500 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 184 flow [2023-11-29 07:01:44,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:44,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:44,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2023-11-29 07:01:44,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7413793103448276 [2023-11-29 07:01:44,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 129 transitions. [2023-11-29 07:01:44,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 129 transitions. [2023-11-29 07:01:44,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:44,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 129 transitions. [2023-11-29 07:01:44,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:44,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:44,504 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:44,505 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 88 flow. Second operand 3 states and 129 transitions. [2023-11-29 07:01:44,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 184 flow [2023-11-29 07:01:44,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 180 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-29 07:01:44,507 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 103 flow [2023-11-29 07:01:44,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=103, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-11-29 07:01:44,508 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -16 predicate places. [2023-11-29 07:01:44,508 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 103 flow [2023-11-29 07:01:44,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 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 07:01:44,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:44,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:44,511 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-29 07:01:44,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:44,709 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:44,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:44,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1951025487, now seen corresponding path program 1 times [2023-11-29 07:01:44,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 07:01:44,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1854723911] [2023-11-29 07:01:44,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:44,710 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:44,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 07:01:44,711 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 07:01:44,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-29 07:01:44,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:44,793 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 07:01:44,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:44,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2023-11-29 07:01:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 07:01:44,821 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:44,821 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 07:01:44,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1854723911] [2023-11-29 07:01:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1854723911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:44,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:44,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:01:44,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870078369] [2023-11-29 07:01:44,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:44,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 07:01:44,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 07:01:44,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 07:01:44,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 07:01:44,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 58 [2023-11-29 07:01:44,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 103 flow. Second operand has 3 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 07:01:44,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:44,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 58 [2023-11-29 07:01:44,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:44,960 INFO L124 PetriNetUnfolderBase]: 303/667 cut-off events. [2023-11-29 07:01:44,960 INFO L125 PetriNetUnfolderBase]: For 47/52 co-relation queries the response was YES. [2023-11-29 07:01:44,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 667 events. 303/667 cut-off events. For 47/52 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3320 event pairs, 108 based on Foata normal form. 81/741 useless extension candidates. Maximal degree in co-relation 758. Up to 327 conditions per place. [2023-11-29 07:01:44,964 INFO L140 encePairwiseOnDemand]: 52/58 looper letters, 29 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2023-11-29 07:01:44,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 197 flow [2023-11-29 07:01:44,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 07:01:44,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 07:01:44,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 129 transitions. [2023-11-29 07:01:44,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7413793103448276 [2023-11-29 07:01:44,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 129 transitions. [2023-11-29 07:01:44,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 129 transitions. [2023-11-29 07:01:44,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:44,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 129 transitions. [2023-11-29 07:01:44,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:44,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:44,968 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 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 07:01:44,968 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 103 flow. Second operand 3 states and 129 transitions. [2023-11-29 07:01:44,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 197 flow [2023-11-29 07:01:44,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 194 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 07:01:44,970 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 112 flow [2023-11-29 07:01:44,970 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-11-29 07:01:44,971 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -15 predicate places. [2023-11-29 07:01:44,971 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 112 flow [2023-11-29 07:01:44,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 07:01:44,971 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:44,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:44,974 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-29 07:01:45,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:45,174 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:45,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:45,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1436899929, now seen corresponding path program 1 times [2023-11-29 07:01:45,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 07:01:45,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640313830] [2023-11-29 07:01:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:45,175 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:45,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 07:01:45,175 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 07:01:45,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-29 07:01:45,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:45,258 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:01:45,259 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:45,291 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 07:01:45,291 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:45,291 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 07:01:45,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640313830] [2023-11-29 07:01:45,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640313830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:45,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:45,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:01:45,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545511990] [2023-11-29 07:01:45,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:45,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:01:45,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 07:01:45,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:01:45,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:01:45,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 58 [2023-11-29 07:01:45,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:45,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:45,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 58 [2023-11-29 07:01:45,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:45,448 INFO L124 PetriNetUnfolderBase]: 298/644 cut-off events. [2023-11-29 07:01:45,448 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-11-29 07:01:45,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1428 conditions, 644 events. 298/644 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 3178 event pairs, 65 based on Foata normal form. 5/647 useless extension candidates. Maximal degree in co-relation 263. Up to 364 conditions per place. [2023-11-29 07:01:45,452 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 40 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2023-11-29 07:01:45,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 256 flow [2023-11-29 07:01:45,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:01:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 07:01:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 169 transitions. [2023-11-29 07:01:45,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.728448275862069 [2023-11-29 07:01:45,454 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 169 transitions. [2023-11-29 07:01:45,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 169 transitions. [2023-11-29 07:01:45,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:45,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 169 transitions. [2023-11-29 07:01:45,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 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 07:01:45,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 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 07:01:45,456 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 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 07:01:45,456 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 112 flow. Second operand 4 states and 169 transitions. [2023-11-29 07:01:45,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 256 flow [2023-11-29 07:01:45,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 243 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 07:01:45,459 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 118 flow [2023-11-29 07:01:45,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=118, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-11-29 07:01:45,460 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -12 predicate places. [2023-11-29 07:01:45,460 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 118 flow [2023-11-29 07:01:45,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:45,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:45,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:45,463 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-29 07:01:45,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:45,662 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:45,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:45,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1786843003, now seen corresponding path program 1 times [2023-11-29 07:01:45,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 07:01:45,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [658592444] [2023-11-29 07:01:45,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:45,663 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:45,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 07:01:45,664 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 07:01:45,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-29 07:01:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 07:01:45,753 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 07:01:45,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 07:01:45,783 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 07:01:45,783 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 07:01:45,783 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 07:01:45,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [658592444] [2023-11-29 07:01:45,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [658592444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 07:01:45,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 07:01:45,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 07:01:45,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258844934] [2023-11-29 07:01:45,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 07:01:45,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 07:01:45,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 07:01:45,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 07:01:45,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 07:01:45,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 58 [2023-11-29 07:01:45,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:45,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 07:01:45,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 58 [2023-11-29 07:01:45,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 07:01:45,961 INFO L124 PetriNetUnfolderBase]: 294/630 cut-off events. [2023-11-29 07:01:45,961 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2023-11-29 07:01:45,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 630 events. 294/630 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 3029 event pairs, 100 based on Foata normal form. 4/627 useless extension candidates. Maximal degree in co-relation 504. Up to 382 conditions per place. [2023-11-29 07:01:45,964 INFO L140 encePairwiseOnDemand]: 54/58 looper letters, 39 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2023-11-29 07:01:45,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 250 flow [2023-11-29 07:01:45,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 07:01:45,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 07:01:45,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 168 transitions. [2023-11-29 07:01:45,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7241379310344828 [2023-11-29 07:01:45,966 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 168 transitions. [2023-11-29 07:01:45,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 168 transitions. [2023-11-29 07:01:45,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 07:01:45,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 168 transitions. [2023-11-29 07:01:45,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 42.0) internal successors, (168), 4 states have internal predecessors, (168), 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 07:01:45,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 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 07:01:45,969 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 58.0) internal successors, (290), 5 states have internal predecessors, (290), 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 07:01:45,969 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 118 flow. Second operand 4 states and 168 transitions. [2023-11-29 07:01:45,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 250 flow [2023-11-29 07:01:45,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 242 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-29 07:01:45,972 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 122 flow [2023-11-29 07:01:45,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=58, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-11-29 07:01:45,973 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2023-11-29 07:01:45,973 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 122 flow [2023-11-29 07:01:45,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 07:01:45,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 07:01:45,974 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] [2023-11-29 07:01:45,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-29 07:01:46,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:46,177 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONMEMORY_LEAK === [thread3Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-29 07:01:46,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 07:01:46,177 INFO L85 PathProgramCache]: Analyzing trace with hash 112771611, now seen corresponding path program 1 times [2023-11-29 07:01:46,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 07:01:46,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182258003] [2023-11-29 07:01:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 07:01:46,178 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:46,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 07:01:46,179 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-29 07:01:46,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-29 07:01:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:01:46,268 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-29 07:01:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-29 07:01:46,348 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2023-11-29 07:01:46,349 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-29 07:01:46,349 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (17 of 18 remaining) [2023-11-29 07:01:46,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0ASSERT_VIOLATIONMEMORY_LEAK (16 of 18 remaining) [2023-11-29 07:01:46,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 18 remaining) [2023-11-29 07:01:46,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 18 remaining) [2023-11-29 07:01:46,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 18 remaining) [2023-11-29 07:01:46,351 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 18 remaining) [2023-11-29 07:01:46,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 18 remaining) [2023-11-29 07:01:46,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 18 remaining) [2023-11-29 07:01:46,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 18 remaining) [2023-11-29 07:01:46,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 18 remaining) [2023-11-29 07:01:46,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 18 remaining) [2023-11-29 07:01:46,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 18 remaining) [2023-11-29 07:01:46,352 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 18 remaining) [2023-11-29 07:01:46,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 18 remaining) [2023-11-29 07:01:46,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (3 of 18 remaining) [2023-11-29 07:01:46,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 18 remaining) [2023-11-29 07:01:46,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 18 remaining) [2023-11-29 07:01:46,353 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 18 remaining) [2023-11-29 07:01:46,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2023-11-29 07:01:46,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-29 07:01:46,554 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 07:01:46,560 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 07:01:46,560 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 07:01:46,586 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-29 07:01:46,588 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated [2023-11-29 07:01:46,588 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-29 07:01:46,588 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-29 07:01:46,588 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated [2023-11-29 07:01:46,589 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-29 07:01:46,589 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-29 07:01:46,589 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-29 07:01:46,590 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated [2023-11-29 07:01:46,590 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated [2023-11-29 07:01:46,595 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:01:46 BasicIcfg [2023-11-29 07:01:46,595 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 07:01:46,595 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 07:01:46,595 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 07:01:46,595 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 07:01:46,595 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:01:39" (3/4) ... [2023-11-29 07:01:46,597 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-29 07:01:46,597 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 07:01:46,598 INFO L158 Benchmark]: Toolchain (without parser) took 8183.07ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 71.9MB in the beginning and 59.9MB in the end (delta: 12.0MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2023-11-29 07:01:46,598 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 39.6MB in the beginning and 39.5MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:01:46,598 INFO L158 Benchmark]: CACSL2BoogieTranslator took 470.13ms. Allocated memory is still 96.5MB. Free memory was 71.9MB in the beginning and 51.0MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 07:01:46,599 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.48ms. Allocated memory is still 96.5MB. Free memory was 50.8MB in the beginning and 48.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 07:01:46,599 INFO L158 Benchmark]: Boogie Preprocessor took 65.64ms. Allocated memory is still 96.5MB. Free memory was 48.7MB in the beginning and 74.8MB in the end (delta: -26.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-29 07:01:46,599 INFO L158 Benchmark]: RCFGBuilder took 653.71ms. Allocated memory is still 96.5MB. Free memory was 74.8MB in the beginning and 35.0MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. [2023-11-29 07:01:46,600 INFO L158 Benchmark]: TraceAbstraction took 6935.59ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 34.4MB in the beginning and 59.9MB in the end (delta: -25.5MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:01:46,600 INFO L158 Benchmark]: Witness Printer took 2.36ms. Allocated memory is still 119.5MB. Free memory is still 59.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 07:01:46,602 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory was 39.6MB in the beginning and 39.5MB in the end (delta: 81.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 470.13ms. Allocated memory is still 96.5MB. Free memory was 71.9MB in the beginning and 51.0MB in the end (delta: 20.9MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.48ms. Allocated memory is still 96.5MB. Free memory was 50.8MB in the beginning and 48.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 65.64ms. Allocated memory is still 96.5MB. Free memory was 48.7MB in the beginning and 74.8MB in the end (delta: -26.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 653.71ms. Allocated memory is still 96.5MB. Free memory was 74.8MB in the beginning and 35.0MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6935.59ms. Allocated memory was 96.5MB in the beginning and 119.5MB in the end (delta: 23.1MB). Free memory was 34.4MB in the beginning and 59.9MB in the end (delta: -25.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.36ms. Allocated memory is still 119.5MB. Free memory is still 59.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet3 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~nondet5 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 20. Possible FailurePath: [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L702] 0 pthread_mutex_t mutex; [L703] 0 int data = 0; [L731] 0 pthread_t t1, t2, t3; [L732] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, data=0, mutex={3:0}, t1={-2147483646:0}, t2={7:0}, t3={6:0}] [L733] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={-2147483646:0}, t2={7:0}, t3={6:0}] [L734] FCALL, FORK 0 pthread_create(&t3, 0, thread3, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=0, mutex={3:0}, t1={-2147483646:0}, t2={7:0}, t3={6:0}] [L707] 1 data++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, data=1, mutex={3:0}] [L714] 2 data+=2 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L721] COND TRUE 3 data >= 3 [L722] CALL 3 reach_error() [L20] COND FALSE 3 !(0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] [L20] 3 __assert_fail ("0", "lazy01.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, data=3, mutex={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 728]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 734]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 732]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 733]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 83 locations, 18 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: 6.8s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 393 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 231 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 562 IncrementalHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 28 mSDtfsCounter, 562 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=0, InterpolantAutomatonStates: 32, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 91 ConstructedInterpolants, 10 QuantifiedInterpolants, 651 SizeOfPredicates, 12 NumberOfNonLiveVariables, 792 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-29 07:01:46,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a9ef8990-e585-43ad-8748-ea3811ee0004/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: UNKNOWN: Overapproximated counterexample