./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb_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_5d8f4922-4dd4-470f-8e83-015bc5717836/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d8f4922-4dd4-470f-8e83-015bc5717836/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_5d8f4922-4dd4-470f-8e83-015bc5717836/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d8f4922-4dd4-470f-8e83-015bc5717836/bin/utaipan-verify-DbMuA5NWw2/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb_p.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d8f4922-4dd4-470f-8e83-015bc5717836/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_5d8f4922-4dd4-470f-8e83-015bc5717836/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 ee91797f6143b4fe80e7c90b0707f35813b28455783da5eca6bad66702efa7d7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 11:26:03,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 11:26:03,406 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d8f4922-4dd4-470f-8e83-015bc5717836/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-02 11:26:03,411 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 11:26:03,412 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 11:26:03,457 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 11:26:03,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 11:26:03,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 11:26:03,459 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 11:26:03,460 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 11:26:03,460 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 11:26:03,460 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 11:26:03,461 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 11:26:03,463 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 11:26:03,463 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 11:26:03,464 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 11:26:03,464 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 11:26:03,464 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 11:26:03,465 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 11:26:03,465 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 11:26:03,465 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 11:26:03,469 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 11:26:03,470 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-02 11:26:03,470 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-02 11:26:03,470 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 11:26:03,471 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 11:26:03,471 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 11:26:03,471 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 11:26:03,472 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 11:26:03,472 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-02 11:26:03,472 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-02 11:26:03,472 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-02 11:26:03,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 11:26:03,477 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-02 11:26:03,478 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 11:26:03,478 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-02 11:26:03,479 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 11:26:03,480 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 11:26:03,480 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 11:26:03,481 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 11:26:03,481 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 11:26:03,482 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:26:03,482 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 11:26:03,482 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 11:26:03,482 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 11:26:03,483 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 11:26:03,484 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 11:26:03,484 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 11:26:03,484 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 11:26:03,484 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_5d8f4922-4dd4-470f-8e83-015bc5717836/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d8f4922-4dd4-470f-8e83-015bc5717836/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee91797f6143b4fe80e7c90b0707f35813b28455783da5eca6bad66702efa7d7 [2024-11-02 11:26:03,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 11:26:03,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 11:26:03,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 11:26:03,793 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 11:26:03,793 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 11:26:03,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d8f4922-4dd4-470f-8e83-015bc5717836/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb_p.i Unable to find full path for "g++" [2024-11-02 11:26:05,897 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 11:26:06,379 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 11:26:06,380 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d8f4922-4dd4-470f-8e83-015bc5717836/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb_p.i [2024-11-02 11:26:06,417 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d8f4922-4dd4-470f-8e83-015bc5717836/bin/utaipan-verify-DbMuA5NWw2/data/efca3aefe/2d84668413c245bea742fe12adbbc81f/FLAG7ebf81baf [2024-11-02 11:26:06,490 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d8f4922-4dd4-470f-8e83-015bc5717836/bin/utaipan-verify-DbMuA5NWw2/data/efca3aefe/2d84668413c245bea742fe12adbbc81f [2024-11-02 11:26:06,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 11:26:06,495 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 11:26:06,499 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 11:26:06,500 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 11:26:06,507 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 11:26:06,508 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:26:06" (1/1) ... [2024-11-02 11:26:06,509 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53b722f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:06, skipping insertion in model container [2024-11-02 11:26:06,510 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 11:26:06" (1/1) ... [2024-11-02 11:26:06,610 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 11:26:08,084 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 11:26:08,124 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 11:26:08,145 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 11:26:08,244 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 11:26:08,298 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 11:26:08,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:26:08,361 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 11:26:08,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 11:26:08,904 INFO L204 MainTranslator]: Completed translation [2024-11-02 11:26:08,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:08 WrapperNode [2024-11-02 11:26:08,906 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 11:26:08,907 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 11:26:08,907 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 11:26:08,907 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 11:26:08,916 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:08" (1/1) ... [2024-11-02 11:26:09,018 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:08" (1/1) ... [2024-11-02 11:26:09,225 INFO L138 Inliner]: procedures = 472, calls = 2681, calls flagged for inlining = 55, calls inlined = 37, statements flattened = 3384 [2024-11-02 11:26:09,226 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 11:26:09,227 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 11:26:09,227 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 11:26:09,227 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 11:26:09,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:08" (1/1) ... [2024-11-02 11:26:09,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:08" (1/1) ... [2024-11-02 11:26:09,262 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:08" (1/1) ... [2024-11-02 11:26:09,263 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:08" (1/1) ... [2024-11-02 11:26:09,344 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:08" (1/1) ... [2024-11-02 11:26:09,355 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:08" (1/1) ... [2024-11-02 11:26:09,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:08" (1/1) ... [2024-11-02 11:26:09,401 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:08" (1/1) ... [2024-11-02 11:26:09,436 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 11:26:09,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 11:26:09,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 11:26:09,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 11:26:09,439 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:08" (1/1) ... [2024-11-02 11:26:09,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 11:26:09,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d8f4922-4dd4-470f-8e83-015bc5717836/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 11:26:09,483 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d8f4922-4dd4-470f-8e83-015bc5717836/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 11:26:09,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5d8f4922-4dd4-470f-8e83-015bc5717836/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 11:26:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2024-11-02 11:26:09,522 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2024-11-02 11:26:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-02 11:26:09,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2024-11-02 11:26:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-02 11:26:09,523 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-02 11:26:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-02 11:26:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-02 11:26:09,523 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-02 11:26:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-02 11:26:09,524 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2024-11-02 11:26:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2024-11-02 11:26:09,525 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2024-11-02 11:26:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-02 11:26:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-02 11:26:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2024-11-02 11:26:09,525 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2024-11-02 11:26:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 11:26:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-02 11:26:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-02 11:26:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-02 11:26:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2024-11-02 11:26:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2024-11-02 11:26:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2024-11-02 11:26:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2024-11-02 11:26:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2024-11-02 11:26:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2024-11-02 11:26:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 11:26:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 11:26:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2024-11-02 11:26:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2024-11-02 11:26:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-02 11:26:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-02 11:26:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2024-11-02 11:26:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2024-11-02 11:26:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-02 11:26:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-02 11:26:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-11-02 11:26:09,531 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-11-02 11:26:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2024-11-02 11:26:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2024-11-02 11:26:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-02 11:26:09,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-02 11:26:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-02 11:26:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-02 11:26:09,533 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-02 11:26:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2024-11-02 11:26:09,533 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2024-11-02 11:26:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-02 11:26:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-02 11:26:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2024-11-02 11:26:09,534 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2024-11-02 11:26:09,534 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2024-11-02 11:26:09,535 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2024-11-02 11:26:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2024-11-02 11:26:09,535 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2024-11-02 11:26:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-02 11:26:09,535 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2024-11-02 11:26:09,536 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2024-11-02 11:26:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2024-11-02 11:26:09,536 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2024-11-02 11:26:09,536 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-02 11:26:09,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-02 11:26:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-11-02 11:26:09,537 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-11-02 11:26:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-02 11:26:09,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-02 11:26:09,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 11:26:10,007 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 11:26:10,011 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 11:26:16,657 INFO L? ?]: Removed 650 outVars from TransFormulas that were not future-live. [2024-11-02 11:26:16,658 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 11:26:17,575 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 11:26:17,575 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-02 11:26:17,576 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:26:17 BoogieIcfgContainer [2024-11-02 11:26:17,576 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 11:26:17,578 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 11:26:17,578 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 11:26:17,582 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 11:26:17,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 11:26:06" (1/3) ... [2024-11-02 11:26:17,586 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af03ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:26:17, skipping insertion in model container [2024-11-02 11:26:17,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 11:26:08" (2/3) ... [2024-11-02 11:26:17,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3af03ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 11:26:17, skipping insertion in model container [2024-11-02 11:26:17,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 11:26:17" (3/3) ... [2024-11-02 11:26:17,588 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inb_p.i [2024-11-02 11:26:17,629 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 11:26:17,629 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2024-11-02 11:26:17,708 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 11:26:17,717 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;@619c441e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 11:26:17,717 INFO L334 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2024-11-02 11:26:17,727 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 11:26:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 11:26:17,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:26:17,738 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 11:26:17,738 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 11:26:17,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:26:17,745 INFO L85 PathProgramCache]: Analyzing trace with hash 44113746, now seen corresponding path program 1 times [2024-11-02 11:26:17,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:26:17,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106665844] [2024-11-02 11:26:17,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:26:17,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:26:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:26:23,081 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 11:26:23,083 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:26:23,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106665844] [2024-11-02 11:26:23,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106665844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:26:23,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:26:23,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:26:23,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52079888] [2024-11-02 11:26:23,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:26:23,093 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 11:26:23,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:26:23,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 11:26:23,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:26:23,128 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 11:26:25,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:26:25,754 INFO L93 Difference]: Finished difference Result 1037 states and 1237 transitions. [2024-11-02 11:26:25,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 11:26:25,757 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 11:26:25,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:26:25,775 INFO L225 Difference]: With dead ends: 1037 [2024-11-02 11:26:25,775 INFO L226 Difference]: Without dead ends: 1035 [2024-11-02 11:26:25,777 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 11:26:25,780 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 581 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 1307 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s 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, 2.4s IncrementalHoareTripleChecker+Time [2024-11-02 11:26:25,781 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [582 Valid, 1713 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1307 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-02 11:26:25,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-11-02 11:26:25,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 843. [2024-11-02 11:26:25,912 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 11:26:25,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 843 states to 843 states and 1178 transitions. [2024-11-02 11:26:25,923 INFO L78 Accepts]: Start accepts. Automaton has 843 states and 1178 transitions. Word has length 4 [2024-11-02 11:26:25,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:26:25,925 INFO L471 AbstractCegarLoop]: Abstraction has 843 states and 1178 transitions. [2024-11-02 11:26:25,926 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 11:26:25,926 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states and 1178 transitions. [2024-11-02 11:26:25,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-02 11:26:25,926 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:26:25,926 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-02 11:26:25,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 11:26:25,929 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 11:26:25,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:26:25,929 INFO L85 PathProgramCache]: Analyzing trace with hash 44113747, now seen corresponding path program 1 times [2024-11-02 11:26:25,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:26:25,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644023516] [2024-11-02 11:26:25,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:26:25,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 11:26:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 11:26:31,463 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 11:26:31,464 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 11:26:31,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644023516] [2024-11-02 11:26:31,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644023516] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 11:26:31,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 11:26:31,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-02 11:26:31,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206950132] [2024-11-02 11:26:31,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 11:26:31,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-02 11:26:31,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 11:26:31,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-02 11:26:31,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-02 11:26:31,470 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 11:26:33,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 11:26:33,286 INFO L93 Difference]: Finished difference Result 961 states and 1256 transitions. [2024-11-02 11:26:33,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 11:26:33,287 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 11:26:33,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 11:26:33,293 INFO L225 Difference]: With dead ends: 961 [2024-11-02 11:26:33,293 INFO L226 Difference]: Without dead ends: 961 [2024-11-02 11:26:33,294 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 11:26:33,295 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 11:26:33,296 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 11:26:33,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2024-11-02 11:26:33,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 903. [2024-11-02 11:26:33,328 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 11:26:33,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1253 transitions. [2024-11-02 11:26:33,334 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1253 transitions. Word has length 4 [2024-11-02 11:26:33,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 11:26:33,334 INFO L471 AbstractCegarLoop]: Abstraction has 903 states and 1253 transitions. [2024-11-02 11:26:33,334 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 11:26:33,334 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1253 transitions. [2024-11-02 11:26:33,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-02 11:26:33,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 11:26:33,335 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 11:26:33,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 11:26:33,336 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 11:26:33,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 11:26:33,336 INFO L85 PathProgramCache]: Analyzing trace with hash 917646214, now seen corresponding path program 1 times [2024-11-02 11:26:33,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 11:26:33,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159312283] [2024-11-02 11:26:33,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 11:26:33,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms