./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75a7e23d8671ab9c707059b5300300854f7697b51bd2252b1df4e0c45e5bbfed --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:54:55,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:54:55,921 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-09 05:54:55,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:54:55,932 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:54:55,975 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:54:55,977 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:54:55,978 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:54:55,979 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:54:55,981 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:54:55,981 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:54:55,982 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:54:55,982 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:54:55,983 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:54:55,983 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:54:55,983 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:54:55,984 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:54:55,984 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:54:55,985 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:54:55,985 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:54:55,986 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:54:55,993 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:54:55,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:54:55,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:54:55,995 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 05:54:55,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:54:55,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 05:54:55,996 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:54:55,996 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:54:55,996 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:54:55,996 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:54:55,997 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:54:55,997 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 05:54:55,998 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:54:55,999 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:54:55,999 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:54:56,000 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:54:56,002 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:54:56,002 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:54:56,003 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:54:56,003 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:54:56,004 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:54:56,004 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:54:56,004 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:54:56,004 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:54:56,005 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:54:56,005 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:54:56,005 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75a7e23d8671ab9c707059b5300300854f7697b51bd2252b1df4e0c45e5bbfed [2024-11-09 05:54:56,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:54:56,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:54:56,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:54:56,340 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:54:56,342 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:54:56,343 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i Unable to find full path for "g++" [2024-11-09 05:54:58,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:54:58,623 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:54:58,626 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2024-11-09 05:54:58,647 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje/data/5599936a9/149535674fba45aeaf53ed001b98a741/FLAGa7ef3e16e [2024-11-09 05:54:58,947 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje/data/5599936a9/149535674fba45aeaf53ed001b98a741 [2024-11-09 05:54:58,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:54:58,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:54:58,952 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:54:58,953 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:54:58,960 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:54:58,961 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:54:58" (1/1) ... [2024-11-09 05:54:58,962 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f397cce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:58, skipping insertion in model container [2024-11-09 05:54:58,962 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:54:58" (1/1) ... [2024-11-09 05:54:59,007 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:54:59,428 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i[30737,30750] [2024-11-09 05:54:59,443 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:54:59,462 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:54:59,509 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i[30737,30750] [2024-11-09 05:54:59,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:54:59,551 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:54:59,552 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:59 WrapperNode [2024-11-09 05:54:59,552 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:54:59,553 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:54:59,553 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:54:59,553 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:54:59,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:59" (1/1) ... [2024-11-09 05:54:59,573 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:59" (1/1) ... [2024-11-09 05:54:59,594 INFO L138 Inliner]: procedures = 166, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2024-11-09 05:54:59,595 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:54:59,595 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:54:59,596 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:54:59,596 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:54:59,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:59" (1/1) ... [2024-11-09 05:54:59,605 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:59" (1/1) ... [2024-11-09 05:54:59,608 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:59" (1/1) ... [2024-11-09 05:54:59,608 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:59" (1/1) ... [2024-11-09 05:54:59,613 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:59" (1/1) ... [2024-11-09 05:54:59,616 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:59" (1/1) ... [2024-11-09 05:54:59,617 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:59" (1/1) ... [2024-11-09 05:54:59,619 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:59" (1/1) ... [2024-11-09 05:54:59,621 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:54:59,622 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:54:59,622 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:54:59,622 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:54:59,623 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:59" (1/1) ... [2024-11-09 05:54:59,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:54:59,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:54:59,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:54:59,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0bc64766-8141-4795-92fd-504577dfb352/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:54:59,695 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-09 05:54:59,695 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-09 05:54:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-09 05:54:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 05:54:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:54:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:54:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 05:54:59,696 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-09 05:54:59,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:54:59,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:54:59,698 WARN L207 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-09 05:54:59,829 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:54:59,831 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:54:59,999 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-09 05:54:59,999 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:55:00,151 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:55:00,151 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-09 05:55:00,152 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:55:00 BoogieIcfgContainer [2024-11-09 05:55:00,152 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:55:00,154 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:55:00,155 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:55:00,158 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:55:00,158 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:54:58" (1/3) ... [2024-11-09 05:55:00,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47298d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:55:00, skipping insertion in model container [2024-11-09 05:55:00,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:54:59" (2/3) ... [2024-11-09 05:55:00,159 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47298d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:55:00, skipping insertion in model container [2024-11-09 05:55:00,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:55:00" (3/3) ... [2024-11-09 05:55:00,161 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2024-11-09 05:55:00,179 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:55:00,179 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:55:00,179 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-09 05:55:00,221 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 05:55:00,252 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 19 transitions, 42 flow [2024-11-09 05:55:00,271 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 54 states, 51 states have (on average 1.8823529411764706) internal successors, (96), 53 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:00,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:55:00,304 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@39247106, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:55:00,304 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-09 05:55:00,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 51 states have (on average 1.8823529411764706) internal successors, (96), 53 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:00,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 05:55:00,313 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:00,313 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 05:55:00,314 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:55:00,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:00,319 INFO L85 PathProgramCache]: Analyzing trace with hash 196308334, now seen corresponding path program 1 times [2024-11-09 05:55:00,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:00,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127334178] [2024-11-09 05:55:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:00,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:00,579 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:00,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127334178] [2024-11-09 05:55:00,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127334178] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:55:00,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:55:00,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:55:00,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868362671] [2024-11-09 05:55:00,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:55:00,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:55:00,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:00,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:55:00,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:55:00,632 INFO L87 Difference]: Start difference. First operand has 54 states, 51 states have (on average 1.8823529411764706) internal successors, (96), 53 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-09 05:55:00,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:55:00,682 INFO L93 Difference]: Finished difference Result 74 states and 127 transitions. [2024-11-09 05:55:00,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:55:00,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2024-11-09 05:55:00,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:55:00,694 INFO L225 Difference]: With dead ends: 74 [2024-11-09 05:55:00,694 INFO L226 Difference]: Without dead ends: 47 [2024-11-09 05:55:00,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:55:00,704 INFO L432 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 05:55:00,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 5 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 05:55:00,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-09 05:55:00,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-09 05:55:00,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.7391304347826086) internal successors, (80), 46 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 05:55:00,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 80 transitions. [2024-11-09 05:55:00,744 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 80 transitions. Word has length 5 [2024-11-09 05:55:00,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:55:00,745 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 80 transitions. [2024-11-09 05:55:00,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-09 05:55:00,745 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 80 transitions. [2024-11-09 05:55:00,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-09 05:55:00,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:00,746 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2024-11-09 05:55:00,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:55:00,747 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:55:00,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:00,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1790578233, now seen corresponding path program 1 times [2024-11-09 05:55:00,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:00,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352227849] [2024-11-09 05:55:00,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:00,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:00,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:55:00,773 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 05:55:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:55:00,801 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 05:55:00,801 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 05:55:00,803 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-09 05:55:00,805 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-09 05:55:00,806 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-11-09 05:55:00,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:55:00,810 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 05:55:00,812 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 05:55:00,812 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-09 05:55:00,839 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 05:55:00,842 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 33 transitions, 76 flow [2024-11-09 05:55:00,933 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 681 states, 673 states have (on average 2.8826151560178306) internal successors, (1940), 680 states have internal predecessors, (1940), 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) [2024-11-09 05:55:00,936 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:55:00,937 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@39247106, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:55:00,937 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-09 05:55:00,942 INFO L276 IsEmpty]: Start isEmpty. Operand has 681 states, 673 states have (on average 2.8826151560178306) internal successors, (1940), 680 states have internal predecessors, (1940), 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) [2024-11-09 05:55:00,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 05:55:00,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:00,944 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 05:55:00,944 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-09 05:55:00,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:00,945 INFO L85 PathProgramCache]: Analyzing trace with hash 227813308, now seen corresponding path program 1 times [2024-11-09 05:55:00,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:00,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788160688] [2024-11-09 05:55:00,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:00,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:01,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:01,001 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:01,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788160688] [2024-11-09 05:55:01,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788160688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:55:01,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:55:01,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:55:01,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148606083] [2024-11-09 05:55:01,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:55:01,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:55:01,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:01,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:55:01,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:55:01,007 INFO L87 Difference]: Start difference. First operand has 681 states, 673 states have (on average 2.8826151560178306) internal successors, (1940), 680 states have internal predecessors, (1940), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-09 05:55:01,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:55:01,159 INFO L93 Difference]: Finished difference Result 1060 states and 2994 transitions. [2024-11-09 05:55:01,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:55:01,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2024-11-09 05:55:01,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:55:01,170 INFO L225 Difference]: With dead ends: 1060 [2024-11-09 05:55:01,170 INFO L226 Difference]: Without dead ends: 544 [2024-11-09 05:55:01,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:55:01,174 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 18 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:55:01,175 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 12 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:55:01,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2024-11-09 05:55:01,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2024-11-09 05:55:01,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 541 states have (on average 2.6950092421441774) internal successors, (1458), 543 states have internal predecessors, (1458), 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) [2024-11-09 05:55:01,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 1458 transitions. [2024-11-09 05:55:01,258 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 1458 transitions. Word has length 5 [2024-11-09 05:55:01,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:55:01,259 INFO L471 AbstractCegarLoop]: Abstraction has 544 states and 1458 transitions. [2024-11-09 05:55:01,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-09 05:55:01,259 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 1458 transitions. [2024-11-09 05:55:01,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-09 05:55:01,261 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:01,261 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2024-11-09 05:55:01,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:55:01,262 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-09 05:55:01,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:01,262 INFO L85 PathProgramCache]: Analyzing trace with hash 636399097, now seen corresponding path program 1 times [2024-11-09 05:55:01,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:01,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343631074] [2024-11-09 05:55:01,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:01,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:55:01,286 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 05:55:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:55:01,299 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 05:55:01,300 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 05:55:01,300 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-09 05:55:01,300 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-09 05:55:01,300 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-09 05:55:01,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-09 05:55:01,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:55:01,301 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 05:55:01,302 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 05:55:01,302 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-09 05:55:01,332 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 05:55:01,334 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 47 transitions, 112 flow [2024-11-09 05:55:01,742 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8448 states, 8429 states have (on average 3.940918258393641) internal successors, (33218), 8447 states have internal predecessors, (33218), 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) [2024-11-09 05:55:01,745 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:55:01,746 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@39247106, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:55:01,749 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-09 05:55:01,784 INFO L276 IsEmpty]: Start isEmpty. Operand has 8448 states, 8429 states have (on average 3.940918258393641) internal successors, (33218), 8447 states have internal predecessors, (33218), 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) [2024-11-09 05:55:01,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 05:55:01,788 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:01,789 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 05:55:01,789 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 05:55:01,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:01,790 INFO L85 PathProgramCache]: Analyzing trace with hash 272678136, now seen corresponding path program 1 times [2024-11-09 05:55:01,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:01,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450840296] [2024-11-09 05:55:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:01,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:01,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:01,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:01,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450840296] [2024-11-09 05:55:01,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450840296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:55:01,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:55:01,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:55:01,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583199046] [2024-11-09 05:55:01,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:55:01,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:55:01,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:01,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:55:01,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:55:01,881 INFO L87 Difference]: Start difference. First operand has 8448 states, 8429 states have (on average 3.940918258393641) internal successors, (33218), 8447 states have internal predecessors, (33218), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-09 05:55:02,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:55:02,609 INFO L93 Difference]: Finished difference Result 13916 states and 54937 transitions. [2024-11-09 05:55:02,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:55:02,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2024-11-09 05:55:02,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:55:02,708 INFO L225 Difference]: With dead ends: 13916 [2024-11-09 05:55:02,709 INFO L226 Difference]: Without dead ends: 6461 [2024-11-09 05:55:02,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:55:02,785 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:55:02,785 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 17 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:55:02,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6461 states. [2024-11-09 05:55:03,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6461 to 6461. [2024-11-09 05:55:03,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6461 states, 6454 states have (on average 3.6670281995661607) internal successors, (23667), 6460 states have internal predecessors, (23667), 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) [2024-11-09 05:55:03,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6461 states to 6461 states and 23667 transitions. [2024-11-09 05:55:03,241 INFO L78 Accepts]: Start accepts. Automaton has 6461 states and 23667 transitions. Word has length 5 [2024-11-09 05:55:03,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:55:03,242 INFO L471 AbstractCegarLoop]: Abstraction has 6461 states and 23667 transitions. [2024-11-09 05:55:03,242 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-09 05:55:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 6461 states and 23667 transitions. [2024-11-09 05:55:03,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-09 05:55:03,247 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:03,247 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2024-11-09 05:55:03,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 05:55:03,248 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-09 05:55:03,250 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:03,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1056969944, now seen corresponding path program 1 times [2024-11-09 05:55:03,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:03,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610038529] [2024-11-09 05:55:03,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:03,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:03,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:55:03,282 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 05:55:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:55:03,309 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 05:55:03,310 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 05:55:03,310 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-09 05:55:03,310 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-09 05:55:03,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-09 05:55:03,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-09 05:55:03,311 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-09 05:55:03,312 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 05:55:03,312 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 05:55:03,313 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 05:55:03,313 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-09 05:55:03,366 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 05:55:03,370 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 62 places, 61 transitions, 150 flow [2024-11-09 05:55:07,810 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 103839 states, 103797 states have (on average 5.021233754347429) internal successors, (521189), 103838 states have internal predecessors, (521189), 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) [2024-11-09 05:55:07,814 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:55:07,815 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@39247106, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:55:07,815 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-09 05:55:07,989 INFO L276 IsEmpty]: Start isEmpty. Operand has 103839 states, 103797 states have (on average 5.021233754347429) internal successors, (521189), 103838 states have internal predecessors, (521189), 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) [2024-11-09 05:55:07,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-09 05:55:07,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:07,990 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-09 05:55:07,990 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-09 05:55:07,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:07,991 INFO L85 PathProgramCache]: Analyzing trace with hash 330903650, now seen corresponding path program 1 times [2024-11-09 05:55:07,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:07,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758832075] [2024-11-09 05:55:07,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:07,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:08,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:55:08,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 05:55:08,025 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:55:08,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758832075] [2024-11-09 05:55:08,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758832075] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:55:08,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:55:08,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-09 05:55:08,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260052653] [2024-11-09 05:55:08,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:55:08,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:55:08,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:55:08,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:55:08,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:55:08,670 INFO L87 Difference]: Start difference. First operand has 103839 states, 103797 states have (on average 5.021233754347429) internal successors, (521189), 103838 states have internal predecessors, (521189), 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) Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-09 05:55:13,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:55:13,553 INFO L93 Difference]: Finished difference Result 175912 states and 890548 transitions. [2024-11-09 05:55:13,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:55:13,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) Word has length 5 [2024-11-09 05:55:13,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:55:15,346 INFO L225 Difference]: With dead ends: 175912 [2024-11-09 05:55:15,354 INFO L226 Difference]: Without dead ends: 78034 [2024-11-09 05:55:15,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:55:15,592 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:55:15,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 22 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 05:55:15,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78034 states. [2024-11-09 05:55:18,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78034 to 78034. [2024-11-09 05:55:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78034 states, 78019 states have (on average 4.650944000820313) internal successors, (362862), 78033 states have internal predecessors, (362862), 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) [2024-11-09 05:55:20,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78034 states to 78034 states and 362862 transitions. [2024-11-09 05:55:20,443 INFO L78 Accepts]: Start accepts. Automaton has 78034 states and 362862 transitions. Word has length 5 [2024-11-09 05:55:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:55:20,444 INFO L471 AbstractCegarLoop]: Abstraction has 78034 states and 362862 transitions. [2024-11-09 05:55:20,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2024-11-09 05:55:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 78034 states and 362862 transitions. [2024-11-09 05:55:20,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-09 05:55:20,448 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:55:20,448 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2024-11-09 05:55:20,449 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 05:55:20,449 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-09 05:55:20,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:55:20,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1336356990, now seen corresponding path program 1 times [2024-11-09 05:55:20,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:55:20,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865526327] [2024-11-09 05:55:20,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:55:20,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:55:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:55:20,468 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-09 05:55:20,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-09 05:55:20,489 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2024-11-09 05:55:20,493 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-09 05:55:20,493 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-09 05:55:20,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-09 05:55:20,494 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-11-09 05:55:20,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-09 05:55:20,495 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-09 05:55:20,496 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-09 05:55:20,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 05:55:20,496 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-09 05:55:20,497 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-09 05:55:20,497 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-09 05:55:20,551 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-09 05:55:20,561 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 76 places, 75 transitions, 190 flow