./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe009_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe009_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f20fd36bba02e157a8b8bf1ebc392e6f77e4774b666ec7e51005ea908400e881 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:06:11,415 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:06:11,542 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 05:06:11,555 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:06:11,556 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:06:11,598 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:06:11,599 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:06:11,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:06:11,601 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:06:11,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:06:11,607 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:06:11,609 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:06:11,609 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:06:11,611 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:06:11,612 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:06:11,612 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:06:11,613 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:06:11,613 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:06:11,614 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:06:11,615 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:06:11,615 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:06:11,616 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:06:11,617 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 05:06:11,617 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 05:06:11,618 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:06:11,619 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 05:06:11,619 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:06:11,620 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 05:06:11,620 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:06:11,621 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 05:06:11,622 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 05:06:11,622 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 05:06:11,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:06:11,623 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 05:06:11,623 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:06:11,624 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 05:06:11,624 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:06:11,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:06:11,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:06:11,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:06:11,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:06:11,626 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:06:11,626 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:06:11,627 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:06:11,627 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:06:11,628 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:06:11,628 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_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f20fd36bba02e157a8b8bf1ebc392e6f77e4774b666ec7e51005ea908400e881 [2023-11-19 05:06:11,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:06:11,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:06:11,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:06:11,999 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:06:12,000 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:06:12,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-wmm/safe009_power.oepc.i [2023-11-19 05:06:15,256 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:06:15,639 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:06:15,640 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_066f6232-fae8-4324-bf0c-3b7299d35f22/sv-benchmarks/c/pthread-wmm/safe009_power.oepc.i [2023-11-19 05:06:15,658 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ/data/c1e8529e8/cf06517bbff84f19b10fe1ee5c05adf0/FLAG2e5d81e00 [2023-11-19 05:06:15,673 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ/data/c1e8529e8/cf06517bbff84f19b10fe1ee5c05adf0 [2023-11-19 05:06:15,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:06:15,680 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:06:15,683 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:06:15,684 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:06:15,689 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:06:15,690 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:06:15" (1/1) ... [2023-11-19 05:06:15,691 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@672e7a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:15, skipping insertion in model container [2023-11-19 05:06:15,691 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:06:15" (1/1) ... [2023-11-19 05:06:15,763 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:06:16,283 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:06:16,296 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:06:16,363 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:06:16,416 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:16,416 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:06:16,424 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:06:16,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:16 WrapperNode [2023-11-19 05:06:16,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:06:16,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:06:16,427 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:06:16,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:06:16,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:16" (1/1) ... [2023-11-19 05:06:16,483 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:16" (1/1) ... [2023-11-19 05:06:16,532 INFO L138 Inliner]: procedures = 176, calls = 77, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 171 [2023-11-19 05:06:16,532 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:06:16,533 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:06:16,533 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:06:16,533 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:06:16,545 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:16" (1/1) ... [2023-11-19 05:06:16,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:16" (1/1) ... [2023-11-19 05:06:16,563 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:16" (1/1) ... [2023-11-19 05:06:16,564 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:16" (1/1) ... [2023-11-19 05:06:16,578 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:16" (1/1) ... [2023-11-19 05:06:16,597 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:16" (1/1) ... [2023-11-19 05:06:16,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:16" (1/1) ... [2023-11-19 05:06:16,603 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:16" (1/1) ... [2023-11-19 05:06:16,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:06:16,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:06:16,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:06:16,610 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:06:16,610 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:16" (1/1) ... [2023-11-19 05:06:16,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:06:16,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:06:16,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:06:16,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_066f6232-fae8-4324-bf0c-3b7299d35f22/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:06:16,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:06:16,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:06:16,706 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 05:06:16,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:06:16,707 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:06:16,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:06:16,709 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 05:06:16,709 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 05:06:16,710 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 05:06:16,710 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 05:06:16,710 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 05:06:16,711 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 05:06:16,711 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:06:16,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 05:06:16,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:06:16,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:06:16,737 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 05:06:16,953 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:06:16,955 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:06:17,700 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:06:18,692 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:06:18,692 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:06:18,697 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:18 BoogieIcfgContainer [2023-11-19 05:06:18,697 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:06:18,700 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:06:18,700 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:06:18,704 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:06:18,704 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:06:15" (1/3) ... [2023-11-19 05:06:18,705 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9d60ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:06:18, skipping insertion in model container [2023-11-19 05:06:18,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:06:16" (2/3) ... [2023-11-19 05:06:18,706 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e9d60ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:06:18, skipping insertion in model container [2023-11-19 05:06:18,706 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:06:18" (3/3) ... [2023-11-19 05:06:18,708 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_power.oepc.i [2023-11-19 05:06:18,730 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:06:18,730 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 54 error locations. [2023-11-19 05:06:18,730 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 05:06:19,060 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 05:06:19,110 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 05:06:19,130 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 195 places, 262 transitions, 536 flow [2023-11-19 05:06:19,135 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 195 places, 262 transitions, 536 flow [2023-11-19 05:06:19,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 262 transitions, 536 flow [2023-11-19 05:06:19,345 INFO L124 PetriNetUnfolderBase]: 77/259 cut-off events. [2023-11-19 05:06:19,346 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 05:06:19,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 259 events. 77/259 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 444 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 203. Up to 12 conditions per place. [2023-11-19 05:06:19,381 INFO L119 LiptonReduction]: Number of co-enabled transitions 24376