./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 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_290fbaac-2751-418d-9808-9f535d638db8/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290fbaac-2751-418d-9808-9f535d638db8/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_290fbaac-2751-418d-9808-9f535d638db8/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290fbaac-2751-418d-9808-9f535d638db8/bin/utaipan-verify-YMUCfTKeje/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_290fbaac-2751-418d-9808-9f535d638db8/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_290fbaac-2751-418d-9808-9f535d638db8/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 ee91797f6143b4fe80e7c90b0707f35813b28455783da5eca6bad66702efa7d7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 04:29:50,936 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 04:29:51,040 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290fbaac-2751-418d-9808-9f535d638db8/bin/utaipan-verify-YMUCfTKeje/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2024-11-09 04:29:51,047 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 04:29:51,050 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 04:29:51,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 04:29:51,087 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 04:29:51,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 04:29:51,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 04:29:51,089 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 04:29:51,089 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 04:29:51,090 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 04:29:51,090 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 04:29:51,091 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 04:29:51,091 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 04:29:51,091 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 04:29:51,092 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 04:29:51,092 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 04:29:51,093 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 04:29:51,093 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 04:29:51,094 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 04:29:51,094 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 04:29:51,095 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 04:29:51,095 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 04:29:51,096 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 04:29:51,096 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 04:29:51,096 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 04:29:51,097 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 04:29:51,097 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 04:29:51,097 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-09 04:29:51,098 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-09 04:29:51,098 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-09 04:29:51,099 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 04:29:51,099 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-09 04:29:51,099 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 04:29:51,100 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-09 04:29:51,100 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 04:29:51,100 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 04:29:51,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 04:29:51,101 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 04:29:51,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 04:29:51,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:29:51,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 04:29:51,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 04:29:51,103 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 04:29:51,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 04:29:51,104 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 04:29:51,104 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 04:29:51,104 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 04:29:51,105 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_290fbaac-2751-418d-9808-9f535d638db8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290fbaac-2751-418d-9808-9f535d638db8/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee91797f6143b4fe80e7c90b0707f35813b28455783da5eca6bad66702efa7d7 [2024-11-09 04:29:51,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 04:29:51,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 04:29:51,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 04:29:51,398 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 04:29:51,398 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 04:29:51,400 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290fbaac-2751-418d-9808-9f535d638db8/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb_p.i Unable to find full path for "g++" [2024-11-09 04:29:53,538 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 04:29:53,908 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 04:29:53,909 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290fbaac-2751-418d-9808-9f535d638db8/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inb_p.i [2024-11-09 04:29:53,946 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290fbaac-2751-418d-9808-9f535d638db8/bin/utaipan-verify-YMUCfTKeje/data/1c5239425/06860c784fdf456e8add06eeff5a1e77/FLAG78169dfce [2024-11-09 04:29:54,119 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290fbaac-2751-418d-9808-9f535d638db8/bin/utaipan-verify-YMUCfTKeje/data/1c5239425/06860c784fdf456e8add06eeff5a1e77 [2024-11-09 04:29:54,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 04:29:54,122 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 04:29:54,124 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 04:29:54,124 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 04:29:54,129 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 04:29:54,130 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:29:54" (1/1) ... [2024-11-09 04:29:54,131 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6544693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:54, skipping insertion in model container [2024-11-09 04:29:54,131 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 04:29:54" (1/1) ... [2024-11-09 04:29:54,226 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 04:29:55,639 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 04:29:55,670 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 04:29:55,703 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 04:29:55,816 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 04:29:55,849 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 04:29:55,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:29:55,931 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 04:29:56,201 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 04:29:56,410 INFO L204 MainTranslator]: Completed translation [2024-11-09 04:29:56,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:56 WrapperNode [2024-11-09 04:29:56,411 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 04:29:56,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 04:29:56,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 04:29:56,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 04:29:56,420 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:56" (1/1) ... [2024-11-09 04:29:56,494 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:56" (1/1) ... [2024-11-09 04:29:56,715 INFO L138 Inliner]: procedures = 472, calls = 2681, calls flagged for inlining = 55, calls inlined = 37, statements flattened = 3380 [2024-11-09 04:29:56,716 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 04:29:56,718 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 04:29:56,718 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 04:29:56,718 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 04:29:56,728 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:56" (1/1) ... [2024-11-09 04:29:56,728 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:56" (1/1) ... [2024-11-09 04:29:56,759 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:56" (1/1) ... [2024-11-09 04:29:56,760 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:56" (1/1) ... [2024-11-09 04:29:56,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:56" (1/1) ... [2024-11-09 04:29:56,864 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:56" (1/1) ... [2024-11-09 04:29:56,890 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:56" (1/1) ... [2024-11-09 04:29:56,905 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:56" (1/1) ... [2024-11-09 04:29:56,935 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 04:29:56,936 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 04:29:56,937 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 04:29:56,937 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 04:29:56,938 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:56" (1/1) ... [2024-11-09 04:29:56,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 04:29:56,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290fbaac-2751-418d-9808-9f535d638db8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:29:56,973 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290fbaac-2751-418d-9808-9f535d638db8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 04:29:56,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290fbaac-2751-418d-9808-9f535d638db8/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 04:29:57,015 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2024-11-09 04:29:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2024-11-09 04:29:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-09 04:29:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2024-11-09 04:29:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-09 04:29:57,016 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-09 04:29:57,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 04:29:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2024-11-09 04:29:57,018 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2024-11-09 04:29:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-09 04:29:57,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2024-11-09 04:29:57,018 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2024-11-09 04:29:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2024-11-09 04:29:57,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 04:29:57,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 04:29:57,019 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2024-11-09 04:29:57,019 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2024-11-09 04:29:57,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 04:29:57,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 04:29:57,021 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 04:29:57,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 04:29:57,021 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2024-11-09 04:29:57,021 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2024-11-09 04:29:57,021 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2024-11-09 04:29:57,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2024-11-09 04:29:57,022 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2024-11-09 04:29:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2024-11-09 04:29:57,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 04:29:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 04:29:57,022 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2024-11-09 04:29:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2024-11-09 04:29:57,022 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 04:29:57,022 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 04:29:57,022 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2024-11-09 04:29:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2024-11-09 04:29:57,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 04:29:57,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 04:29:57,023 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-11-09 04:29:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-11-09 04:29:57,023 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2024-11-09 04:29:57,023 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2024-11-09 04:29:57,023 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-09 04:29:57,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2024-11-09 04:29:57,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 04:29:57,024 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-09 04:29:57,024 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-09 04:29:57,024 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2024-11-09 04:29:57,025 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2024-11-09 04:29:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2024-11-09 04:29:57,025 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2024-11-09 04:29:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2024-11-09 04:29:57,025 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2024-11-09 04:29:57,025 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2024-11-09 04:29:57,026 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2024-11-09 04:29:57,026 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2024-11-09 04:29:57,026 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2024-11-09 04:29:57,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 04:29:57,026 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2024-11-09 04:29:57,026 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2024-11-09 04:29:57,027 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2024-11-09 04:29:57,027 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2024-11-09 04:29:57,027 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-09 04:29:57,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2024-11-09 04:29:57,027 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2024-11-09 04:29:57,027 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2024-11-09 04:29:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 04:29:57,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 04:29:57,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 04:29:57,464 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 04:29:57,466 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 04:30:03,911 INFO L? ?]: Removed 653 outVars from TransFormulas that were not future-live. [2024-11-09 04:30:03,911 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 04:30:04,829 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 04:30:04,833 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 04:30:04,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:30:04 BoogieIcfgContainer [2024-11-09 04:30:04,833 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 04:30:04,836 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 04:30:04,837 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 04:30:04,841 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 04:30:04,841 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 04:29:54" (1/3) ... [2024-11-09 04:30:04,842 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5024f0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:30:04, skipping insertion in model container [2024-11-09 04:30:04,842 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 04:29:56" (2/3) ... [2024-11-09 04:30:04,844 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5024f0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 04:30:04, skipping insertion in model container [2024-11-09 04:30:04,844 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 04:30:04" (3/3) ... [2024-11-09 04:30:04,846 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inb_p.i [2024-11-09 04:30:04,864 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 04:30:04,864 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 205 error locations. [2024-11-09 04:30:04,929 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 04:30:04,938 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;@1be27327, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 04:30:04,939 INFO L334 AbstractCegarLoop]: Starting to check reachability of 205 error locations. [2024-11-09 04:30:04,945 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 04:30:04,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 04:30:04,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:04,958 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 04:30:04,959 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 04:30:04,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:04,964 INFO L85 PathProgramCache]: Analyzing trace with hash 44052242, now seen corresponding path program 1 times [2024-11-09 04:30:04,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:04,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727277181] [2024-11-09 04:30:04,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:04,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:10,077 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 04:30:10,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:10,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727277181] [2024-11-09 04:30:10,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727277181] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:10,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:10,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:30:10,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829621992] [2024-11-09 04:30:10,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:10,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:30:10,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:30:10,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:30:10,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:30:10,133 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 04:30:12,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:12,558 INFO L93 Difference]: Finished difference Result 1045 states and 1249 transitions. [2024-11-09 04:30:12,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:30:12,561 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 04:30:12,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:12,597 INFO L225 Difference]: With dead ends: 1045 [2024-11-09 04:30:12,597 INFO L226 Difference]: Without dead ends: 1043 [2024-11-09 04:30:12,599 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 04:30:12,614 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 04:30:12,617 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 04:30:12,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2024-11-09 04:30:12,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 851. [2024-11-09 04:30:12,779 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 04:30:12,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1190 transitions. [2024-11-09 04:30:12,789 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1190 transitions. Word has length 4 [2024-11-09 04:30:12,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:12,789 INFO L471 AbstractCegarLoop]: Abstraction has 851 states and 1190 transitions. [2024-11-09 04:30:12,790 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 04:30:12,790 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1190 transitions. [2024-11-09 04:30:12,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-09 04:30:12,790 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:12,790 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-09 04:30:12,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 04:30:12,791 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 04:30:12,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:12,792 INFO L85 PathProgramCache]: Analyzing trace with hash 44052243, now seen corresponding path program 1 times [2024-11-09 04:30:12,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:12,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198945650] [2024-11-09 04:30:12,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:12,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:16,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:18,765 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 04:30:18,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:18,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198945650] [2024-11-09 04:30:18,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198945650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:18,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:18,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:30:18,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139975230] [2024-11-09 04:30:18,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:18,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 04:30:18,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:30:18,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 04:30:18,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 04:30:18,772 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 04:30:20,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:20,459 INFO L93 Difference]: Finished difference Result 969 states and 1268 transitions. [2024-11-09 04:30:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 04:30:20,460 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 04:30:20,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:20,467 INFO L225 Difference]: With dead ends: 969 [2024-11-09 04:30:20,468 INFO L226 Difference]: Without dead ends: 969 [2024-11-09 04:30:20,469 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 04:30:20,471 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 04:30:20,471 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 04:30:20,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2024-11-09 04:30:20,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 911. [2024-11-09 04:30:20,525 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 04:30:20,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1265 transitions. [2024-11-09 04:30:20,532 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1265 transitions. Word has length 4 [2024-11-09 04:30:20,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:20,533 INFO L471 AbstractCegarLoop]: Abstraction has 911 states and 1265 transitions. [2024-11-09 04:30:20,533 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 04:30:20,533 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1265 transitions. [2024-11-09 04:30:20,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 04:30:20,534 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:20,534 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:20,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 04:30:20,534 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 04:30:20,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:20,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1963878680, now seen corresponding path program 1 times [2024-11-09 04:30:20,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:20,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768027177] [2024-11-09 04:30:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:20,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:23,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:24,372 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 04:30:24,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:24,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768027177] [2024-11-09 04:30:24,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768027177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:24,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:24,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 04:30:24,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533574488] [2024-11-09 04:30:24,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:24,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 04:30:24,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:30:24,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 04:30:24,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 04:30:24,378 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 04:30:25,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:25,361 INFO L93 Difference]: Finished difference Result 1096 states and 1317 transitions. [2024-11-09 04:30:25,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 04:30:25,361 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 04:30:25,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:25,367 INFO L225 Difference]: With dead ends: 1096 [2024-11-09 04:30:25,368 INFO L226 Difference]: Without dead ends: 1096 [2024-11-09 04:30:25,368 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 04:30:25,369 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, 0.9s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:25,370 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [573 Valid, 945 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-09 04:30:25,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2024-11-09 04:30:25,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 910. [2024-11-09 04:30:25,401 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 04:30:25,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1260 transitions. [2024-11-09 04:30:25,407 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1260 transitions. Word has length 10 [2024-11-09 04:30:25,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:25,407 INFO L471 AbstractCegarLoop]: Abstraction has 910 states and 1260 transitions. [2024-11-09 04:30:25,407 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 04:30:25,408 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1260 transitions. [2024-11-09 04:30:25,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-09 04:30:25,408 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:25,408 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:25,409 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 04:30:25,409 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 04:30:25,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:25,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1963878679, now seen corresponding path program 1 times [2024-11-09 04:30:25,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:25,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363109640] [2024-11-09 04:30:25,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:25,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:29,820 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 04:30:29,820 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:29,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363109640] [2024-11-09 04:30:29,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363109640] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 04:30:29,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 04:30:29,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 04:30:29,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485525558] [2024-11-09 04:30:29,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 04:30:29,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 04:30:29,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 04:30:29,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 04:30:29,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-09 04:30:29,825 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 04:30:31,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 04:30:31,199 INFO L93 Difference]: Finished difference Result 973 states and 1274 transitions. [2024-11-09 04:30:31,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 04:30:31,200 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 04:30:31,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 04:30:31,206 INFO L225 Difference]: With dead ends: 973 [2024-11-09 04:30:31,207 INFO L226 Difference]: Without dead ends: 973 [2024-11-09 04:30:31,207 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 04:30:31,209 INFO L432 NwaCegarLoop]: 644 mSDtfsCounter, 244 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 541 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2024-11-09 04:30:31,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 1140 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 541 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-09 04:30:31,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2024-11-09 04:30:31,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 915. [2024-11-09 04:30:31,250 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 04:30:31,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1265 transitions. [2024-11-09 04:30:31,256 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1265 transitions. Word has length 10 [2024-11-09 04:30:31,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 04:30:31,257 INFO L471 AbstractCegarLoop]: Abstraction has 915 states and 1265 transitions. [2024-11-09 04:30:31,257 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 04:30:31,257 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1265 transitions. [2024-11-09 04:30:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-09 04:30:31,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 04:30:31,258 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 04:30:31,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 04:30:31,258 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 04:30:31,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 04:30:31,259 INFO L85 PathProgramCache]: Analyzing trace with hash 166805500, now seen corresponding path program 1 times [2024-11-09 04:30:31,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 04:30:31,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928729808] [2024-11-09 04:30:31,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:31,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 04:30:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:35,935 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 04:30:35,935 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 04:30:35,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928729808] [2024-11-09 04:30:35,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928729808] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 04:30:35,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307606081] [2024-11-09 04:30:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 04:30:35,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 04:30:35,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290fbaac-2751-418d-9808-9f535d638db8/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 04:30:35,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290fbaac-2751-418d-9808-9f535d638db8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 04:30:35,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_290fbaac-2751-418d-9808-9f535d638db8/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 04:30:40,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 04:30:40,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 5471 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-09 04:30:40,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 04:30:40,537 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 04:30:40,538 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 04:30:40,681 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 04:30:40,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307606081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 04:30:40,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1356592434] [2024-11-09 04:30:40,707 INFO L159 IcfgInterpreter]: Started Sifa with 11 locations of interest [2024-11-09 04:30:40,708 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 04:30:40,714 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 04:30:40,721 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 04:30:40,722 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 04:33:07,018 WARN L286 SmtUtils]: Spent 9.59s 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 04:34:40,073 WARN L286 SmtUtils]: Spent 6.14s 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 04:36:02,478 WARN L286 SmtUtils]: Spent 11.04s 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 04:37:52,807 WARN L286 SmtUtils]: Spent 7.34s 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 04:38:39,818 WARN L286 SmtUtils]: Spent 16.07s 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 04:38:55,551 WARN L286 SmtUtils]: Spent 15.70s 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 04:39:17,953 WARN L286 SmtUtils]: Spent 22.36s 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 04:39:32,294 WARN L286 SmtUtils]: Spent 14.33s 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 04:39:47,190 WARN L286 SmtUtils]: Spent 14.88s 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 04:40:08,552 WARN L286 SmtUtils]: Spent 21.34s 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)