./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 4fc63b2a 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_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2 --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 5d4ac8f9993fdd9a611524b9b9f0ae991f3672b4fa16738dbd64025282f00ca6 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:38:32,801 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:38:32,897 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 12:38:32,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:38:32,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:38:32,947 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:38:32,948 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:38:32,948 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:38:32,949 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:38:32,949 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:38:32,950 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:38:32,950 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:38:32,950 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:38:32,953 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:38:32,954 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:38:32,954 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:38:32,954 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:38:32,955 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:38:32,955 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:38:32,955 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:38:32,956 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:38:32,960 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:38:32,960 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 12:38:32,961 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 12:38:32,961 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:38:32,961 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:38:32,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:38:32,962 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:38:32,962 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:38:32,962 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 12:38:32,963 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 12:38:32,963 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 12:38:32,963 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:38:32,963 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 12:38:32,966 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:38:32,966 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 12:38:32,966 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:38:32,967 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:38:32,967 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:38:32,967 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:38:32,967 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:38:32,968 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:38:32,968 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:38:32,968 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:38:32,970 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:38:32,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:38:32,970 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:38:32,970 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:38:32,971 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:38:32,971 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_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5d4ac8f9993fdd9a611524b9b9f0ae991f3672b4fa16738dbd64025282f00ca6 [2024-11-02 12:38:33,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:38:33,325 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:38:33,328 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:38:33,329 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:38:33,330 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:38:33,331 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i Unable to find full path for "g++" [2024-11-02 12:38:35,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:38:35,759 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:38:35,759 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69941eee-585a-4156-a1fd-714c83cdda11/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_outb_p.i [2024-11-02 12:38:35,793 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2/data/9c13d1ece/db87dde10fc941ad888c8b91b2757e91/FLAGe2c6d73d0 [2024-11-02 12:38:35,939 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2/data/9c13d1ece/db87dde10fc941ad888c8b91b2757e91 [2024-11-02 12:38:35,945 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:38:35,947 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:38:35,949 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:38:35,949 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:38:35,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:38:35,965 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:38:35" (1/1) ... [2024-11-02 12:38:35,966 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@163982ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:35, skipping insertion in model container [2024-11-02 12:38:35,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:38:35" (1/1) ... [2024-11-02 12:38:36,083 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:38:37,560 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:38:37,626 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:38:37,664 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:38:37,748 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:38:37,805 WARN L1053 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-02 12:38:37,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:38:37,887 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:38:38,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:38:38,492 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:38:38,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:38 WrapperNode [2024-11-02 12:38:38,494 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:38:38,495 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:38:38,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:38:38,496 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:38:38,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:38" (1/1) ... [2024-11-02 12:38:38,634 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:38" (1/1) ... [2024-11-02 12:38:38,892 INFO L138 Inliner]: procedures = 472, calls = 2681, calls flagged for inlining = 55, calls inlined = 37, statements flattened = 3384 [2024-11-02 12:38:38,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:38:38,894 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:38:38,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:38:38,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:38:38,919 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:38" (1/1) ... [2024-11-02 12:38:38,919 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:38" (1/1) ... [2024-11-02 12:38:38,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:38" (1/1) ... [2024-11-02 12:38:38,978 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:38" (1/1) ... [2024-11-02 12:38:39,176 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:38" (1/1) ... [2024-11-02 12:38:39,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:38" (1/1) ... [2024-11-02 12:38:39,196 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:38" (1/1) ... [2024-11-02 12:38:39,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:38" (1/1) ... [2024-11-02 12:38:39,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:38:39,267 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:38:39,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:38:39,268 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:38:39,268 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:38" (1/1) ... [2024-11-02 12:38:39,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:38:39,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:38:39,323 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:38:39,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_69941eee-585a-4156-a1fd-714c83cdda11/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:38:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2024-11-02 12:38:39,370 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2024-11-02 12:38:39,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-02 12:38:39,371 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2024-11-02 12:38:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-02 12:38:39,371 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-02 12:38:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 12:38:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-02 12:38:39,371 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-02 12:38:39,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-02 12:38:39,372 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2024-11-02 12:38:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2024-11-02 12:38:39,372 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2024-11-02 12:38:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 12:38:39,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 12:38:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2024-11-02 12:38:39,374 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2024-11-02 12:38:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:38:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 12:38:39,374 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-02 12:38:39,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-02 12:38:39,375 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2024-11-02 12:38:39,375 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2024-11-02 12:38:39,375 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2024-11-02 12:38:39,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2024-11-02 12:38:39,376 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2024-11-02 12:38:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2024-11-02 12:38:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:38:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:38:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2024-11-02 12:38:39,377 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2024-11-02 12:38:39,377 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 12:38:39,378 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 12:38:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2024-11-02 12:38:39,378 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2024-11-02 12:38:39,378 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 12:38:39,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 12:38:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-11-02 12:38:39,380 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-11-02 12:38:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2024-11-02 12:38:39,380 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2024-11-02 12:38:39,380 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-02 12:38:39,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-02 12:38:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 12:38:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-02 12:38:39,381 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-02 12:38:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2024-11-02 12:38:39,381 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2024-11-02 12:38:39,381 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-02 12:38:39,382 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-02 12:38:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2024-11-02 12:38:39,382 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2024-11-02 12:38:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2024-11-02 12:38:39,382 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2024-11-02 12:38:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2024-11-02 12:38:39,382 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2024-11-02 12:38:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 12:38:39,382 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2024-11-02 12:38:39,383 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2024-11-02 12:38:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2024-11-02 12:38:39,383 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2024-11-02 12:38:39,383 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-02 12:38:39,384 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-02 12:38:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-11-02 12:38:39,384 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-11-02 12:38:39,384 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-02 12:38:39,385 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-02 12:38:39,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:38:39,821 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:38:39,825 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:38:46,406 INFO L? ?]: Removed 650 outVars from TransFormulas that were not future-live. [2024-11-02 12:38:46,407 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:38:47,274 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:38:47,278 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-02 12:38:47,278 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:38:47 BoogieIcfgContainer [2024-11-02 12:38:47,278 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:38:47,284 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:38:47,285 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:38:47,288 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:38:47,289 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:38:35" (1/3) ... [2024-11-02 12:38:47,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d54d373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:38:47, skipping insertion in model container [2024-11-02 12:38:47,292 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:38:38" (2/3) ... [2024-11-02 12:38:47,292 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d54d373 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:38:47, skipping insertion in model container [2024-11-02 12:38:47,293 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:38:47" (3/3) ... [2024-11-02 12:38:47,294 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_outb_p.i [2024-11-02 12:38:47,315 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:38:47,315 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2024-11-02 12:38:47,397 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:38:47,406 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=None, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@9bb537c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:38:47,407 INFO L334 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2024-11-02 12:38:47,414 INFO L276 IsEmpty]: Start isEmpty. Operand has 574 states, 264 states have (on average 2.015151515151515) internal successors, (532), 475 states have internal predecessors, (532), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) [2024-11-02 12:38:47,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:38:47,424 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:47,425 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:38:47,425 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-02 12:38:47,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:47,433 INFO L85 PathProgramCache]: Analyzing trace with hash 44203119, now seen corresponding path program 1 times [2024-11-02 12:38:47,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:47,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729024881] [2024-11-02 12:38:47,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:47,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:38:52,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:38:52,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:38:52,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729024881] [2024-11-02 12:38:52,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729024881] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:38:52,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:38:52,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:38:52,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145416050] [2024-11-02 12:38:52,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:38:52,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:38:52,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:38:52,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:38:52,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:38:52,981 INFO L87 Difference]: Start difference. First operand has 574 states, 264 states have (on average 2.015151515151515) internal successors, (532), 475 states have internal predecessors, (532), 78 states have call successors, (78), 26 states have call predecessors, (78), 26 states have return successors, (78), 78 states have call predecessors, (78), 78 states have call successors, (78) Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:55,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:38:55,316 INFO L93 Difference]: Finished difference Result 1037 states and 1237 transitions. [2024-11-02 12:38:55,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:38:55,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-02 12:38:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:38:55,336 INFO L225 Difference]: With dead ends: 1037 [2024-11-02 12:38:55,336 INFO L226 Difference]: Without dead ends: 1035 [2024-11-02 12:38:55,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:38:55,342 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 581 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-02 12:38:55,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 1713 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-02 12:38:55,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-11-02 12:38:55,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 843. [2024-11-02 12:38:55,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 843 states, 450 states have (on average 2.0044444444444443) internal successors, (902), 672 states have internal predecessors, (902), 138 states have call successors, (138), 50 states have call predecessors, (138), 50 states have return successors, (138), 131 states have call predecessors, (138), 138 states have call successors, (138) [2024-11-02 12:38:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1178 transitions. [2024-11-02 12:38:55,477 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1178 transitions. Word has length 4 [2024-11-02 12:38:55,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:38:55,478 INFO L471 AbstractCegarLoop]: Abstraction has 843 states and 1178 transitions. [2024-11-02 12:38:55,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:38:55,478 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1178 transitions. [2024-11-02 12:38:55,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 12:38:55,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:38:55,479 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 12:38:55,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:38:55,479 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-02 12:38:55,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:38:55,480 INFO L85 PathProgramCache]: Analyzing trace with hash 44203120, now seen corresponding path program 1 times [2024-11-02 12:38:55,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:38:55,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299997161] [2024-11-02 12:38:55,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:38:55,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:38:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:39:00,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-02 12:39:00,146 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:39:00,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299997161] [2024-11-02 12:39:00,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299997161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:39:00,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:39:00,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 12:39:00,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265417038] [2024-11-02 12:39:00,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:39:00,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 12:39:00,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:39:00,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 12:39:00,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 12:39:00,152 INFO L87 Difference]: Start difference. First operand 843 states and 1178 transitions. Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:39:01,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:39:01,958 INFO L93 Difference]: Finished difference Result 961 states and 1256 transitions. [2024-11-02 12:39:01,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:39:01,959 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-02 12:39:01,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:39:01,966 INFO L225 Difference]: With dead ends: 961 [2024-11-02 12:39:01,966 INFO L226 Difference]: Without dead ends: 961 [2024-11-02 12:39:01,966 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:39:01,968 INFO L432 NwaCegarLoop]: 635 mSDtfsCounter, 234 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 1933 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-02 12:39:01,968 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 1933 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-02 12:39:01,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2024-11-02 12:39:02,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 903. [2024-11-02 12:39:02,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 478 states have (on average 1.9644351464435146) internal successors, (939), 701 states have internal predecessors, (939), 157 states have call successors, (157), 63 states have call predecessors, (157), 63 states have return successors, (157), 150 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-02 12:39:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1253 transitions. [2024-11-02 12:39:02,012 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1253 transitions. Word has length 4 [2024-11-02 12:39:02,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:39:02,012 INFO L471 AbstractCegarLoop]: Abstraction has 903 states and 1253 transitions. [2024-11-02 12:39:02,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-02 12:39:02,013 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1253 transitions. [2024-11-02 12:39:02,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 12:39:02,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:39:02,013 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:39:02,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:39:02,014 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-02 12:39:02,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:39:02,014 INFO L85 PathProgramCache]: Analyzing trace with hash -209749879, now seen corresponding path program 1 times [2024-11-02 12:39:02,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:39:02,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466094202] [2024-11-02 12:39:02,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:39:02,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms