./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje --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 6e9935ba6b05a3c7e4f0c65d8e33bc471835cb8eb350ac893c3dd9a00ab8c4f5 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:48:04,791 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:48:04,895 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 04:48:04,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:48:04,902 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:48:04,940 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:48:04,941 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:48:04,941 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:48:04,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:48:04,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:48:04,945 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:48:04,946 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:48:04,946 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:48:04,947 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:48:04,947 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:48:04,948 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:48:04,951 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:48:04,952 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:48:04,952 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:48:04,953 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:48:04,953 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:48:04,957 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:48:04,958 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 04:48:04,961 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 04:48:04,962 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:48:04,962 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:48:04,962 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:48:04,963 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:48:04,963 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:48:04,964 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 04:48:04,964 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 04:48:04,965 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 04:48:04,966 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:48:04,966 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:48:04,967 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:48:04,967 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 04:48:04,968 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:48:04,968 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:48:04,968 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:48:04,969 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:48:04,969 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:48:04,970 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:48:04,970 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:48:04,970 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:48:04,971 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:48:04,971 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:48:04,972 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:48:04,972 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:48:04,972 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:48:04,972 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_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e9935ba6b05a3c7e4f0c65d8e33bc471835cb8eb350ac893c3dd9a00ab8c4f5 [2024-11-09 04:48:05,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:48:05,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:48:05,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:48:05,373 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:48:05,374 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:48:05,376 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl.i Unable to find full path for "g++" [2024-11-09 04:48:07,608 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:48:08,052 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:48:08,056 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inl.i [2024-11-09 04:48:08,099 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/data/6bbd5893f/0741dce4d6f3432c9c6305999690ac38/FLAG581db0a85 [2024-11-09 04:48:08,122 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/data/6bbd5893f/0741dce4d6f3432c9c6305999690ac38 [2024-11-09 04:48:08,126 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:48:08,128 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:48:08,132 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:48:08,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:48:08,142 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:48:08,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:48:08" (1/1) ... [2024-11-09 04:48:08,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca7d032 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:08, skipping insertion in model container [2024-11-09 04:48:08,145 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:48:08" (1/1) ... [2024-11-09 04:48:08,270 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:48:10,032 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:48:10,084 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:48:10,106 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:48:10,213 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:48:10,265 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-09 04:48:10,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:48:10,348 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:48:10,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:48:10,965 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:48:10,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:10 WrapperNode [2024-11-09 04:48:10,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:48:10,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:48:10,968 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:48:10,968 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:48:10,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:10" (1/1) ... [2024-11-09 04:48:11,123 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:10" (1/1) ... [2024-11-09 04:48:11,285 INFO L138 Inliner]: procedures = 472, calls = 2681, calls flagged for inlining = 55, calls inlined = 37, statements flattened = 3380 [2024-11-09 04:48:11,285 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:48:11,286 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:48:11,286 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:48:11,287 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:48:11,300 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:10" (1/1) ... [2024-11-09 04:48:11,300 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:10" (1/1) ... [2024-11-09 04:48:11,333 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:10" (1/1) ... [2024-11-09 04:48:11,334 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:10" (1/1) ... [2024-11-09 04:48:11,479 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:10" (1/1) ... [2024-11-09 04:48:11,501 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:10" (1/1) ... [2024-11-09 04:48:11,527 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:10" (1/1) ... [2024-11-09 04:48:11,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:10" (1/1) ... [2024-11-09 04:48:11,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:48:11,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:48:11,578 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:48:11,579 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:48:11,580 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:10" (1/1) ... [2024-11-09 04:48:11,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:48:11,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:48:11,619 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:48:11,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:48:11,656 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2024-11-09 04:48:11,657 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2024-11-09 04:48:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 04:48:11,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2024-11-09 04:48:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-09 04:48:11,657 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-09 04:48:11,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 04:48:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-09 04:48:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-09 04:48:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 04:48:11,658 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2024-11-09 04:48:11,658 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2024-11-09 04:48:11,659 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2024-11-09 04:48:11,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 04:48:11,659 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 04:48:11,659 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2024-11-09 04:48:11,660 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2024-11-09 04:48:11,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:48:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 04:48:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 04:48:11,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 04:48:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2024-11-09 04:48:11,661 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2024-11-09 04:48:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2024-11-09 04:48:11,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2024-11-09 04:48:11,661 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2024-11-09 04:48:11,661 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2024-11-09 04:48:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:48:11,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:48:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2024-11-09 04:48:11,662 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2024-11-09 04:48:11,662 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 04:48:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 04:48:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2024-11-09 04:48:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2024-11-09 04:48:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 04:48:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 04:48:11,663 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-11-09 04:48:11,663 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-11-09 04:48:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2024-11-09 04:48:11,664 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2024-11-09 04:48:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-09 04:48:11,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-09 04:48:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 04:48:11,664 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-09 04:48:11,664 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-09 04:48:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2024-11-09 04:48:11,665 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2024-11-09 04:48:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-09 04:48:11,665 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-09 04:48:11,665 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2024-11-09 04:48:11,666 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2024-11-09 04:48:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2024-11-09 04:48:11,666 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2024-11-09 04:48:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2024-11-09 04:48:11,666 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2024-11-09 04:48:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 04:48:11,666 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2024-11-09 04:48:11,666 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2024-11-09 04:48:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2024-11-09 04:48:11,667 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2024-11-09 04:48:11,667 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-09 04:48:11,667 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-09 04:48:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-11-09 04:48:11,668 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-11-09 04:48:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 04:48:11,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 04:48:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:48:12,128 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:48:12,131 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:48:19,217 INFO L? ?]: Removed 653 outVars from TransFormulas that were not future-live. [2024-11-09 04:48:19,218 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:48:19,962 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:48:19,966 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 04:48:19,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:48:19 BoogieIcfgContainer [2024-11-09 04:48:19,966 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:48:19,969 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:48:19,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:48:19,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:48:19,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:48:08" (1/3) ... [2024-11-09 04:48:19,977 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8238a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:48:19, skipping insertion in model container [2024-11-09 04:48:19,977 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:48:10" (2/3) ... [2024-11-09 04:48:19,979 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8238a7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:48:19, skipping insertion in model container [2024-11-09 04:48:19,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:48:19" (3/3) ... [2024-11-09 04:48:19,981 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inl.i [2024-11-09 04:48:19,999 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:48:20,000 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2024-11-09 04:48:20,114 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:48:20,122 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;@18bf8aa2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:48:20,123 INFO L334 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2024-11-09 04:48:20,130 INFO L276 IsEmpty]: Start isEmpty. Operand has 580 states, 270 states have (on average 2.0037037037037035) internal successors, (541), 481 states have internal predecessors, (541), 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) [2024-11-09 04:48:20,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 04:48:20,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:20,142 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 04:48:20,143 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)] === [2024-11-09 04:48:20,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:20,149 INFO L85 PathProgramCache]: Analyzing trace with hash 44141615, now seen corresponding path program 1 times [2024-11-09 04:48:20,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:20,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837413267] [2024-11-09 04:48:20,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:20,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:25,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:25,476 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:25,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837413267] [2024-11-09 04:48:25,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837413267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:25,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:48:25,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:48:25,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731671116] [2024-11-09 04:48:25,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:25,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:48:25,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:25,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:48:25,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:48:25,537 INFO L87 Difference]: Start difference. First operand has 580 states, 270 states have (on average 2.0037037037037035) internal successors, (541), 481 states have internal predecessors, (541), 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) [2024-11-09 04:48:27,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:27,992 INFO L93 Difference]: Finished difference Result 1045 states and 1249 transitions. [2024-11-09 04:48:27,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:48:27,995 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 [2024-11-09 04:48:27,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:28,025 INFO L225 Difference]: With dead ends: 1045 [2024-11-09 04:48:28,026 INFO L226 Difference]: Without dead ends: 1043 [2024-11-09 04:48:28,027 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 [2024-11-09 04:48:28,032 INFO L432 NwaCegarLoop]: 553 mSDtfsCounter, 590 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 1297 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 1753 SdHoareTripleChecker+Invalid, 1301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:28,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 1753 Invalid, 1301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1297 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-09 04:48:28,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2024-11-09 04:48:28,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 851. [2024-11-09 04:48:28,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 458 states have (on average 1.9956331877729259) internal successors, (914), 680 states have internal predecessors, (914), 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) [2024-11-09 04:48:28,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1190 transitions. [2024-11-09 04:48:28,136 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1190 transitions. Word has length 4 [2024-11-09 04:48:28,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:28,137 INFO L471 AbstractCegarLoop]: Abstraction has 851 states and 1190 transitions. [2024-11-09 04:48:28,137 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) [2024-11-09 04:48:28,137 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1190 transitions. [2024-11-09 04:48:28,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 04:48:28,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:28,138 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 04:48:28,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:48:28,138 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)] === [2024-11-09 04:48:28,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:28,139 INFO L85 PathProgramCache]: Analyzing trace with hash 44141616, now seen corresponding path program 1 times [2024-11-09 04:48:28,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:28,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673650387] [2024-11-09 04:48:28,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:28,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:32,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:32,949 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:32,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673650387] [2024-11-09 04:48:32,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673650387] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:32,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:48:32,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:48:32,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226912938] [2024-11-09 04:48:32,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:32,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:48:32,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:32,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:48:32,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:48:32,955 INFO L87 Difference]: Start difference. First operand 851 states and 1190 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) [2024-11-09 04:48:34,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:34,666 INFO L93 Difference]: Finished difference Result 969 states and 1268 transitions. [2024-11-09 04:48:34,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:48:34,667 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 [2024-11-09 04:48:34,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:34,674 INFO L225 Difference]: With dead ends: 969 [2024-11-09 04:48:34,675 INFO L226 Difference]: Without dead ends: 969 [2024-11-09 04:48:34,675 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 [2024-11-09 04:48:34,676 INFO L432 NwaCegarLoop]: 647 mSDtfsCounter, 240 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 1056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:34,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 1973 Invalid, 1056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-09 04:48:34,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2024-11-09 04:48:34,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 911. [2024-11-09 04:48:34,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 486 states have (on average 1.9567901234567902) internal successors, (951), 709 states have internal predecessors, (951), 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) [2024-11-09 04:48:34,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1265 transitions. [2024-11-09 04:48:34,727 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1265 transitions. Word has length 4 [2024-11-09 04:48:34,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:34,728 INFO L471 AbstractCegarLoop]: Abstraction has 911 states and 1265 transitions. [2024-11-09 04:48:34,728 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) [2024-11-09 04:48:34,728 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1265 transitions. [2024-11-09 04:48:34,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 04:48:34,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:34,729 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:34,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 04:48:34,730 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)] === [2024-11-09 04:48:34,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:34,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1741548101, now seen corresponding path program 1 times [2024-11-09 04:48:34,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:34,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643756491] [2024-11-09 04:48:34,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:34,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:37,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:37,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:37,702 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:37,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643756491] [2024-11-09 04:48:37,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643756491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:37,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:48:37,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:48:37,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26324360] [2024-11-09 04:48:37,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:37,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:48:37,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:37,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:48:37,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:48:37,706 INFO L87 Difference]: Start difference. First operand 911 states and 1265 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:48:38,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:38,733 INFO L93 Difference]: Finished difference Result 1096 states and 1317 transitions. [2024-11-09 04:48:38,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:48:38,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-09 04:48:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:38,745 INFO L225 Difference]: With dead ends: 1096 [2024-11-09 04:48:38,745 INFO L226 Difference]: Without dead ends: 1096 [2024-11-09 04:48:38,746 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:48:38,748 INFO L432 NwaCegarLoop]: 531 mSDtfsCounter, 573 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:38,752 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 945 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-09 04:48:38,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2024-11-09 04:48:38,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 910. [2024-11-09 04:48:38,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 486 states have (on average 1.9465020576131686) internal successors, (946), 708 states have internal predecessors, (946), 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) [2024-11-09 04:48:38,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1260 transitions. [2024-11-09 04:48:38,814 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1260 transitions. Word has length 10 [2024-11-09 04:48:38,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:38,814 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1260 transitions. [2024-11-09 04:48:38,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:48:38,815 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1260 transitions. [2024-11-09 04:48:38,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 04:48:38,815 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:38,816 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:38,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 04:48:38,816 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-09 04:48:38,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:38,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1741548102, now seen corresponding path program 1 times [2024-11-09 04:48:38,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:38,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033593271] [2024-11-09 04:48:38,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:38,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:42,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:42,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033593271] [2024-11-09 04:48:42,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033593271] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:48:42,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:48:42,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:48:42,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713875372] [2024-11-09 04:48:42,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:48:42,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:48:42,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:48:42,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:48:42,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:48:42,433 INFO L87 Difference]: Start difference. First operand 910 states and 1260 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:48:43,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:48:43,585 INFO L93 Difference]: Finished difference Result 973 states and 1274 transitions. [2024-11-09 04:48:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:48:43,586 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2024-11-09 04:48:43,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:48:43,593 INFO L225 Difference]: With dead ends: 973 [2024-11-09 04:48:43,593 INFO L226 Difference]: Without dead ends: 973 [2024-11-09 04:48:43,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:48:43,595 INFO L432 NwaCegarLoop]: 644 mSDtfsCounter, 244 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1140 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-09 04:48:43,598 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1140 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-09 04:48:43,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2024-11-09 04:48:43,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 915. [2024-11-09 04:48:43,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 491 states have (on average 1.9368635437881874) internal successors, (951), 713 states have internal predecessors, (951), 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) [2024-11-09 04:48:43,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1265 transitions. [2024-11-09 04:48:43,638 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1265 transitions. Word has length 10 [2024-11-09 04:48:43,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:48:43,639 INFO L471 AbstractCegarLoop]: Abstraction has 915 states and 1265 transitions. [2024-11-09 04:48:43,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-09 04:48:43,639 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1265 transitions. [2024-11-09 04:48:43,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 04:48:43,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:48:43,643 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:48:43,644 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 04:48:43,644 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [spin_lock_initErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, spin_lock_initErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 202 more)] === [2024-11-09 04:48:43,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:48:43,645 INFO L85 PathProgramCache]: Analyzing trace with hash -713403521, now seen corresponding path program 1 times [2024-11-09 04:48:43,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:48:43,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612499828] [2024-11-09 04:48:43,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:43,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:48:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:47,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:47,411 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:48:47,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612499828] [2024-11-09 04:48:47,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612499828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:48:47,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680353424] [2024-11-09 04:48:47,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:48:47,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:48:47,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:48:47,414 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:48:47,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_09cd73c8-ece8-44f5-8603-2879d9a49f51/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:48:51,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:48:51,150 INFO L255 TraceCheckSpWp]: Trace formula consists of 5471 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:48:51,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:48:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:51,379 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:48:51,526 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 04:48:51,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680353424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:48:51,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1520973266] [2024-11-09 04:48:51,553 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 04:48:51,554 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:48:51,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:48:51,565 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:48:51,565 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:50:52,157 WARN L286 SmtUtils]: Spent 10.07s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 04:52:33,516 WARN L286 SmtUtils]: Spent 7.45s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 04:53:55,393 WARN L286 SmtUtils]: Spent 10.23s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 04:55:41,120 WARN L286 SmtUtils]: Spent 7.30s on a formula simplification that was a NOOP. DAG size: 4265 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-09 04:56:30,838 WARN L286 SmtUtils]: Spent 16.91s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 04:56:47,932 WARN L286 SmtUtils]: Spent 17.06s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 04:57:14,002 WARN L286 SmtUtils]: Spent 26.02s on a formula simplification. DAG size of input: 11415 DAG size of output: 11415 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 04:57:31,986 WARN L286 SmtUtils]: Spent 17.97s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 04:57:49,990 WARN L286 SmtUtils]: Spent 17.99s on a formula simplification that was a NOOP. DAG size: 11414 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-09 04:58:16,506 WARN L286 SmtUtils]: Spent 26.49s on a formula simplification. DAG size of input: 11415 DAG size of output: 11415 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm)