./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-ext/01b_inc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-ext/01b_inc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 16:09:47,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 16:09:47,904 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 16:09:47,909 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 16:09:47,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 16:09:47,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 16:09:47,948 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 16:09:47,949 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 16:09:47,950 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 16:09:47,952 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 16:09:47,952 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 16:09:47,953 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 16:09:47,953 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 16:09:47,954 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 16:09:47,954 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 16:09:47,956 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 16:09:47,957 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 16:09:47,957 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 16:09:47,957 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 16:09:47,958 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 16:09:47,958 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 16:09:47,963 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 16:09:47,963 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 16:09:47,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 16:09:47,964 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 16:09:47,964 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 16:09:47,964 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 16:09:47,965 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 16:09:47,965 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 16:09:47,965 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 16:09:47,966 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 16:09:47,966 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 16:09:47,966 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 16:09:47,966 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:09:47,967 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 16:09:47,967 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 16:09:47,967 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 16:09:47,967 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 16:09:47,968 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 16:09:47,968 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 16:09:47,968 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 16:09:47,970 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 16:09:47,970 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_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc [2024-11-08 16:09:48,276 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 16:09:48,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 16:09:48,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 16:09:48,305 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 16:09:48,309 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 16:09:48,310 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/pthread-ext/01b_inc.i Unable to find full path for "g++" [2024-11-08 16:09:50,330 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 16:09:50,610 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 16:09:50,614 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/sv-benchmarks/c/pthread-ext/01b_inc.i [2024-11-08 16:09:50,639 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX/data/5aa53b995/3d04b585c3984f69ad2aca3a2182a123/FLAG1b5de65e5 [2024-11-08 16:09:50,661 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX/data/5aa53b995/3d04b585c3984f69ad2aca3a2182a123 [2024-11-08 16:09:50,665 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 16:09:50,667 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 16:09:50,669 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 16:09:50,670 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 16:09:50,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 16:09:50,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:09:50" (1/1) ... [2024-11-08 16:09:50,680 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b6ef512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:50, skipping insertion in model container [2024-11-08 16:09:50,682 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 04:09:50" (1/1) ... [2024-11-08 16:09:50,733 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 16:09:51,132 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:09:51,151 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 16:09:51,221 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 16:09:51,304 INFO L204 MainTranslator]: Completed translation [2024-11-08 16:09:51,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:51 WrapperNode [2024-11-08 16:09:51,305 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 16:09:51,306 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 16:09:51,306 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 16:09:51,306 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 16:09:51,319 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:51" (1/1) ... [2024-11-08 16:09:51,338 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:51" (1/1) ... [2024-11-08 16:09:51,388 INFO L138 Inliner]: procedures = 163, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2024-11-08 16:09:51,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 16:09:51,390 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 16:09:51,391 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 16:09:51,391 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 16:09:51,402 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:51" (1/1) ... [2024-11-08 16:09:51,402 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:51" (1/1) ... [2024-11-08 16:09:51,406 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:51" (1/1) ... [2024-11-08 16:09:51,425 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-08 16:09:51,425 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:51" (1/1) ... [2024-11-08 16:09:51,425 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:51" (1/1) ... [2024-11-08 16:09:51,430 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:51" (1/1) ... [2024-11-08 16:09:51,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:51" (1/1) ... [2024-11-08 16:09:51,434 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:51" (1/1) ... [2024-11-08 16:09:51,435 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:51" (1/1) ... [2024-11-08 16:09:51,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 16:09:51,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 16:09:51,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 16:09:51,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 16:09:51,440 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:51" (1/1) ... [2024-11-08 16:09:51,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 16:09:51,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 16:09:51,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 16:09:51,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d43df2c7-a44e-498f-b2e0-cb3386fe2679/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 16:09:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-08 16:09:51,518 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-08 16:09:51,518 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-08 16:09:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-08 16:09:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 16:09:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 16:09:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-08 16:09:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-08 16:09:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-08 16:09:51,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 16:09:51,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 16:09:51,521 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-08 16:09:51,695 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 16:09:51,698 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 16:09:51,875 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-08 16:09:51,876 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 16:09:52,004 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 16:09:52,004 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 16:09:52,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:09:52 BoogieIcfgContainer [2024-11-08 16:09:52,004 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 16:09:52,006 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 16:09:52,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 16:09:52,010 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 16:09:52,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 04:09:50" (1/3) ... [2024-11-08 16:09:52,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7a0dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:09:52, skipping insertion in model container [2024-11-08 16:09:52,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 04:09:51" (2/3) ... [2024-11-08 16:09:52,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f7a0dff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 04:09:52, skipping insertion in model container [2024-11-08 16:09:52,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 04:09:52" (3/3) ... [2024-11-08 16:09:52,013 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2024-11-08 16:09:52,031 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 16:09:52,032 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-08 16:09:52,032 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-08 16:09:52,088 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 16:09:52,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 22 transitions, 48 flow [2024-11-08 16:09:52,144 INFO L124 PetriNetUnfolderBase]: 1/26 cut-off events. [2024-11-08 16:09:52,147 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:09:52,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 26 events. 1/26 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 33 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2024-11-08 16:09:52,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 22 transitions, 48 flow [2024-11-08 16:09:52,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 22 transitions, 48 flow [2024-11-08 16:09:52,163 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:09:52,170 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23f2a5e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:09:52,170 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-08 16:09:52,174 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:09:52,175 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 16:09:52,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:09:52,175 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:52,176 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 16:09:52,176 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:09:52,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:52,182 INFO L85 PathProgramCache]: Analyzing trace with hash 174389, now seen corresponding path program 1 times [2024-11-08 16:09:52,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:52,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276626293] [2024-11-08 16:09:52,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:52,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:52,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:52,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276626293] [2024-11-08 16:09:52,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276626293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:52,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:52,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:09:52,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799251741] [2024-11-08 16:09:52,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:52,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:09:52,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:52,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:09:52,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:09:52,405 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 22 [2024-11-08 16:09:52,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 22 transitions, 48 flow. Second operand has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:52,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:52,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 22 [2024-11-08 16:09:52,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:52,466 INFO L124 PetriNetUnfolderBase]: 19/64 cut-off events. [2024-11-08 16:09:52,467 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:09:52,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114 conditions, 64 events. 19/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 164 event pairs, 16 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 102. Up to 46 conditions per place. [2024-11-08 16:09:52,469 INFO L140 encePairwiseOnDemand]: 21/22 looper letters, 12 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2024-11-08 16:09:52,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 19 transitions, 66 flow [2024-11-08 16:09:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:09:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 16:09:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 29 transitions. [2024-11-08 16:09:52,482 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2024-11-08 16:09:52,484 INFO L175 Difference]: Start difference. First operand has 24 places, 22 transitions, 48 flow. Second operand 2 states and 29 transitions. [2024-11-08 16:09:52,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 19 transitions, 66 flow [2024-11-08 16:09:52,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 19 transitions, 66 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:09:52,488 INFO L231 Difference]: Finished difference. Result has 22 places, 19 transitions, 42 flow [2024-11-08 16:09:52,490 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=22, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=22, PETRI_TRANSITIONS=19} [2024-11-08 16:09:52,494 INFO L277 CegarLoopForPetriNet]: 24 programPoint places, -2 predicate places. [2024-11-08 16:09:52,494 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 19 transitions, 42 flow [2024-11-08 16:09:52,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 9.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:52,495 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:52,495 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2024-11-08 16:09:52,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 16:09:52,496 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-08 16:09:52,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:52,497 INFO L85 PathProgramCache]: Analyzing trace with hash 900367325, now seen corresponding path program 1 times [2024-11-08 16:09:52,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:52,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403041783] [2024-11-08 16:09:52,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:09:52,539 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:09:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:09:52,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:09:52,582 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:09:52,584 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-08 16:09:52,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 4 remaining) [2024-11-08 16:09:52,587 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (1 of 4 remaining) [2024-11-08 16:09:52,588 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2024-11-08 16:09:52,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 16:09:52,588 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 16:09:52,592 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 16:09:52,592 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-08 16:09:52,640 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 16:09:52,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 37 transitions, 84 flow [2024-11-08 16:09:52,678 INFO L124 PetriNetUnfolderBase]: 2/46 cut-off events. [2024-11-08 16:09:52,679 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-08 16:09:52,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 46 events. 2/46 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 109 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 33. Up to 3 conditions per place. [2024-11-08 16:09:52,680 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 37 transitions, 84 flow [2024-11-08 16:09:52,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 37 transitions, 84 flow [2024-11-08 16:09:52,686 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:09:52,687 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23f2a5e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:09:52,687 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-08 16:09:52,691 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:09:52,692 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 16:09:52,694 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:09:52,694 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:52,694 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 16:09:52,694 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 16:09:52,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:52,695 INFO L85 PathProgramCache]: Analyzing trace with hash 211130, now seen corresponding path program 1 times [2024-11-08 16:09:52,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:52,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078386746] [2024-11-08 16:09:52,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:52,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:52,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:52,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:52,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078386746] [2024-11-08 16:09:52,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078386746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:52,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:52,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:09:52,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589341845] [2024-11-08 16:09:52,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:52,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:09:52,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:52,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:09:52,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:09:52,757 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 37 [2024-11-08 16:09:52,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:52,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:52,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 37 [2024-11-08 16:09:52,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:52,982 INFO L124 PetriNetUnfolderBase]: 403/845 cut-off events. [2024-11-08 16:09:52,982 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-11-08 16:09:52,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 845 events. 403/845 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4939 event pairs, 376 based on Foata normal form. 0/773 useless extension candidates. Maximal degree in co-relation 267. Up to 649 conditions per place. [2024-11-08 16:09:52,996 INFO L140 encePairwiseOnDemand]: 36/37 looper letters, 21 selfloop transitions, 0 changer transitions 0/34 dead transitions. [2024-11-08 16:09:52,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 34 transitions, 120 flow [2024-11-08 16:09:52,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:09:52,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 16:09:52,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 50 transitions. [2024-11-08 16:09:52,999 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6756756756756757 [2024-11-08 16:09:53,000 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 84 flow. Second operand 2 states and 50 transitions. [2024-11-08 16:09:53,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 34 transitions, 120 flow [2024-11-08 16:09:53,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 34 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:09:53,005 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 78 flow [2024-11-08 16:09:53,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-08 16:09:53,006 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2024-11-08 16:09:53,006 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 78 flow [2024-11-08 16:09:53,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:53,007 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:53,007 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-08 16:09:53,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 16:09:53,007 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-08 16:09:53,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:53,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1788603845, now seen corresponding path program 1 times [2024-11-08 16:09:53,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:53,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426817357] [2024-11-08 16:09:53,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:53,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:09:53,034 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:09:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:09:53,063 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:09:53,063 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:09:53,063 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-08 16:09:53,064 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (3 of 5 remaining) [2024-11-08 16:09:53,064 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (2 of 5 remaining) [2024-11-08 16:09:53,064 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 5 remaining) [2024-11-08 16:09:53,064 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2024-11-08 16:09:53,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 16:09:53,065 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-08 16:09:53,065 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 16:09:53,065 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-08 16:09:53,106 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 16:09:53,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 52 transitions, 122 flow [2024-11-08 16:09:53,119 INFO L124 PetriNetUnfolderBase]: 3/66 cut-off events. [2024-11-08 16:09:53,120 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-08 16:09:53,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 66 events. 3/66 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 201 event pairs, 0 based on Foata normal form. 0/52 useless extension candidates. Maximal degree in co-relation 53. Up to 4 conditions per place. [2024-11-08 16:09:53,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 52 transitions, 122 flow [2024-11-08 16:09:53,121 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 52 transitions, 122 flow [2024-11-08 16:09:53,126 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:09:53,127 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23f2a5e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:09:53,127 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-08 16:09:53,131 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:09:53,131 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 16:09:53,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:09:53,131 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:53,131 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 16:09:53,132 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-08 16:09:53,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:53,132 INFO L85 PathProgramCache]: Analyzing trace with hash 262766, now seen corresponding path program 1 times [2024-11-08 16:09:53,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:53,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165963226] [2024-11-08 16:09:53,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:53,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:53,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:53,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165963226] [2024-11-08 16:09:53,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165963226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:53,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:53,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:09:53,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560769302] [2024-11-08 16:09:53,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:53,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:09:53,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:53,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:09:53,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:09:53,168 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 52 [2024-11-08 16:09:53,168 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 52 transitions, 122 flow. Second operand has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:53,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:53,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 52 [2024-11-08 16:09:53,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:54,409 INFO L124 PetriNetUnfolderBase]: 5803/9835 cut-off events. [2024-11-08 16:09:54,409 INFO L125 PetriNetUnfolderBase]: For 679/679 co-relation queries the response was YES. [2024-11-08 16:09:54,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18212 conditions, 9835 events. 5803/9835 cut-off events. For 679/679 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 74404 event pairs, 5560 based on Foata normal form. 0/8904 useless extension candidates. Maximal degree in co-relation 1532. Up to 8020 conditions per place. [2024-11-08 16:09:54,487 INFO L140 encePairwiseOnDemand]: 51/52 looper letters, 30 selfloop transitions, 0 changer transitions 0/49 dead transitions. [2024-11-08 16:09:54,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 176 flow [2024-11-08 16:09:54,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:09:54,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 16:09:54,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 71 transitions. [2024-11-08 16:09:54,489 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6826923076923077 [2024-11-08 16:09:54,489 INFO L175 Difference]: Start difference. First operand has 56 places, 52 transitions, 122 flow. Second operand 2 states and 71 transitions. [2024-11-08 16:09:54,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 176 flow [2024-11-08 16:09:54,495 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 49 transitions, 174 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-08 16:09:54,496 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 114 flow [2024-11-08 16:09:54,497 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=114, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2024-11-08 16:09:54,497 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, -2 predicate places. [2024-11-08 16:09:54,498 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 114 flow [2024-11-08 16:09:54,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:54,498 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:54,498 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:09:54,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 16:09:54,498 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-08 16:09:54,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:54,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1625099663, now seen corresponding path program 1 times [2024-11-08 16:09:54,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:54,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721094418] [2024-11-08 16:09:54,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:54,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:54,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:54,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721094418] [2024-11-08 16:09:54,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721094418] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:54,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:54,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:09:54,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536783326] [2024-11-08 16:09:54,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:54,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:09:54,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:54,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:09:54,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:09:54,855 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 52 [2024-11-08 16:09:54,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:54,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:54,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 52 [2024-11-08 16:09:54,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:09:57,215 INFO L124 PetriNetUnfolderBase]: 11367/19191 cut-off events. [2024-11-08 16:09:57,216 INFO L125 PetriNetUnfolderBase]: For 368/368 co-relation queries the response was YES. [2024-11-08 16:09:57,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35824 conditions, 19191 events. 11367/19191 cut-off events. For 368/368 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 156012 event pairs, 3351 based on Foata normal form. 0/16604 useless extension candidates. Maximal degree in co-relation 35818. Up to 7422 conditions per place. [2024-11-08 16:09:57,358 INFO L140 encePairwiseOnDemand]: 42/52 looper letters, 104 selfloop transitions, 12 changer transitions 0/129 dead transitions. [2024-11-08 16:09:57,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 129 transitions, 536 flow [2024-11-08 16:09:57,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:09:57,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:09:57,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 206 transitions. [2024-11-08 16:09:57,365 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6602564102564102 [2024-11-08 16:09:57,366 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 114 flow. Second operand 6 states and 206 transitions. [2024-11-08 16:09:57,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 129 transitions, 536 flow [2024-11-08 16:09:57,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 129 transitions, 536 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:09:57,373 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 205 flow [2024-11-08 16:09:57,374 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=205, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2024-11-08 16:09:57,375 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-11-08 16:09:57,376 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 205 flow [2024-11-08 16:09:57,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:57,376 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:57,376 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-08 16:09:57,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 16:09:57,377 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-08 16:09:57,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:57,378 INFO L85 PathProgramCache]: Analyzing trace with hash 936257500, now seen corresponding path program 1 times [2024-11-08 16:09:57,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:57,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947774338] [2024-11-08 16:09:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:57,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:09:57,401 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-08 16:09:57,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-08 16:09:57,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-08 16:09:57,418 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-08 16:09:57,418 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-08 16:09:57,419 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (4 of 6 remaining) [2024-11-08 16:09:57,419 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (3 of 6 remaining) [2024-11-08 16:09:57,419 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (2 of 6 remaining) [2024-11-08 16:09:57,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (1 of 6 remaining) [2024-11-08 16:09:57,420 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONMEMORY_LEAK (0 of 6 remaining) [2024-11-08 16:09:57,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 16:09:57,420 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-08 16:09:57,421 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-08 16:09:57,421 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-08 16:09:57,469 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-08 16:09:57,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 67 transitions, 162 flow [2024-11-08 16:09:57,484 INFO L124 PetriNetUnfolderBase]: 4/86 cut-off events. [2024-11-08 16:09:57,484 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-08 16:09:57,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 86 events. 4/86 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 288 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 78. Up to 5 conditions per place. [2024-11-08 16:09:57,485 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 67 transitions, 162 flow [2024-11-08 16:09:57,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 67 transitions, 162 flow [2024-11-08 16:09:57,487 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 16:09:57,489 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@23f2a5e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 16:09:57,489 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-08 16:09:57,490 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-08 16:09:57,490 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2024-11-08 16:09:57,490 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-08 16:09:57,490 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:09:57,490 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2024-11-08 16:09:57,491 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-08 16:09:57,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:09:57,491 INFO L85 PathProgramCache]: Analyzing trace with hash 329297, now seen corresponding path program 1 times [2024-11-08 16:09:57,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:09:57,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247636414] [2024-11-08 16:09:57,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:09:57,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:09:57,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:09:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:09:57,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:09:57,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247636414] [2024-11-08 16:09:57,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247636414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:09:57,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:09:57,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 16:09:57,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453414099] [2024-11-08 16:09:57,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:09:57,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 16:09:57,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:09:57,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 16:09:57,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 16:09:57,521 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 67 [2024-11-08 16:09:57,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 162 flow. Second operand has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:09:57,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:09:57,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 67 [2024-11-08 16:09:57,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:06,837 INFO L124 PetriNetUnfolderBase]: 71899/108249 cut-off events. [2024-11-08 16:10:06,837 INFO L125 PetriNetUnfolderBase]: For 10977/10977 co-relation queries the response was YES. [2024-11-08 16:10:07,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204107 conditions, 108249 events. 71899/108249 cut-off events. For 10977/10977 co-relation queries the response was YES. Maximal size of possible extension queue 4329. Compared 924403 event pairs, 69712 based on Foata normal form. 0/97400 useless extension candidates. Maximal degree in co-relation 18298. Up to 91855 conditions per place. [2024-11-08 16:10:07,660 INFO L140 encePairwiseOnDemand]: 66/67 looper letters, 39 selfloop transitions, 0 changer transitions 0/64 dead transitions. [2024-11-08 16:10:07,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 64 transitions, 234 flow [2024-11-08 16:10:07,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 16:10:07,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-08 16:10:07,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 92 transitions. [2024-11-08 16:10:07,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6865671641791045 [2024-11-08 16:10:07,662 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 162 flow. Second operand 2 states and 92 transitions. [2024-11-08 16:10:07,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 64 transitions, 234 flow [2024-11-08 16:10:07,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 64 transitions, 228 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-08 16:10:07,677 INFO L231 Difference]: Finished difference. Result has 70 places, 64 transitions, 150 flow [2024-11-08 16:10:07,678 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=150, PETRI_PLACES=70, PETRI_TRANSITIONS=64} [2024-11-08 16:10:07,678 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, -2 predicate places. [2024-11-08 16:10:07,679 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 64 transitions, 150 flow [2024-11-08 16:10:07,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:07,679 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:07,679 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:07,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 16:10:07,680 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-08 16:10:07,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:07,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1535346944, now seen corresponding path program 1 times [2024-11-08 16:10:07,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:07,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761707557] [2024-11-08 16:10:07,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:07,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:07,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:07,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 16:10:07,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:07,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761707557] [2024-11-08 16:10:07,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761707557] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:07,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:07,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:10:07,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938101975] [2024-11-08 16:10:07,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:07,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:10:07,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:07,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:10:07,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:10:07,848 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 67 [2024-11-08 16:10:07,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 64 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:07,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:07,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 67 [2024-11-08 16:10:07,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-08 16:10:30,220 INFO L124 PetriNetUnfolderBase]: 207509/303575 cut-off events. [2024-11-08 16:10:30,220 INFO L125 PetriNetUnfolderBase]: For 5181/5181 co-relation queries the response was YES. [2024-11-08 16:10:30,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576711 conditions, 303575 events. 207509/303575 cut-off events. For 5181/5181 co-relation queries the response was YES. Maximal size of possible extension queue 12236. Compared 2715801 event pairs, 70926 based on Foata normal form. 0/257763 useless extension candidates. Maximal degree in co-relation 576704. Up to 133343 conditions per place. [2024-11-08 16:10:32,391 INFO L140 encePairwiseOnDemand]: 55/67 looper letters, 144 selfloop transitions, 15 changer transitions 0/176 dead transitions. [2024-11-08 16:10:32,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 176 transitions, 742 flow [2024-11-08 16:10:32,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 16:10:32,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-08 16:10:32,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2024-11-08 16:10:32,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6840796019900498 [2024-11-08 16:10:32,394 INFO L175 Difference]: Start difference. First operand has 70 places, 64 transitions, 150 flow. Second operand 6 states and 275 transitions. [2024-11-08 16:10:32,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 176 transitions, 742 flow [2024-11-08 16:10:32,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 176 transitions, 742 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-08 16:10:32,414 INFO L231 Difference]: Finished difference. Result has 79 places, 80 transitions, 268 flow [2024-11-08 16:10:32,415 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=67, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=268, PETRI_PLACES=79, PETRI_TRANSITIONS=80} [2024-11-08 16:10:32,416 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2024-11-08 16:10:32,416 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 80 transitions, 268 flow [2024-11-08 16:10:32,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 16:10:32,417 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-08 16:10:32,418 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 16:10:32,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 16:10:32,418 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONMEMORY_LEAK === [thr1Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-08 16:10:32,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 16:10:32,418 INFO L85 PathProgramCache]: Analyzing trace with hash -463230299, now seen corresponding path program 1 times [2024-11-08 16:10:32,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 16:10:32,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345572049] [2024-11-08 16:10:32,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 16:10:32,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 16:10:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 16:10:32,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 16:10:32,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 16:10:32,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345572049] [2024-11-08 16:10:32,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345572049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 16:10:32,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 16:10:32,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 16:10:32,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704459964] [2024-11-08 16:10:32,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 16:10:32,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 16:10:32,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 16:10:32,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 16:10:32,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-08 16:10:32,634 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 67 [2024-11-08 16:10:32,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 80 transitions, 268 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 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) [2024-11-08 16:10:32,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-08 16:10:32,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 67 [2024-11-08 16:10:32,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand