./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:10:28,577 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:10:28,698 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-19 04:10:28,708 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:10:28,709 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:10:28,749 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:10:28,750 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:10:28,750 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:10:28,751 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:10:28,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:10:28,752 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:10:28,753 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:10:28,754 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:10:28,754 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:10:28,755 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:10:28,755 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:10:28,756 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:10:28,756 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:10:28,757 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:10:28,757 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:10:28,758 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:10:28,758 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:10:28,759 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:10:28,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:10:28,760 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:10:28,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:10:28,761 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:10:28,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:10:28,762 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:10:28,762 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:10:28,762 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:10:28,763 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:10:28,763 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:10:28,764 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:10:28,764 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:10:28,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:10:28,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:10:28,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:10:28,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:10:28,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:10:28,765 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:10:28,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:10:28,766 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:10:28,766 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:10:28,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:10:28,767 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_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e6f79eda5be95b806b33aaa2a353a360ae33a1e35cc1bf6f128d14768d932de [2023-11-19 04:10:29,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:10:29,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:10:29,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:10:29,114 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:10:29,114 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:10:29,118 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2023-11-19 04:10:32,247 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:10:32,651 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:10:32,651 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i [2023-11-19 04:10:32,679 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/data/c72373e17/4dfe0a67ea1748468e6a8b67eb144043/FLAG064098902 [2023-11-19 04:10:32,699 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/data/c72373e17/4dfe0a67ea1748468e6a8b67eb144043 [2023-11-19 04:10:32,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:10:32,707 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:10:32,708 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:10:32,708 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:10:32,716 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:10:32,717 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:10:32" (1/1) ... [2023-11-19 04:10:32,718 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26778ee7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:32, skipping insertion in model container [2023-11-19 04:10:32,718 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:10:32" (1/1) ... [2023-11-19 04:10:32,806 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:10:33,023 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i[452,465] [2023-11-19 04:10:34,346 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:10:34,388 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:10:34,400 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/sv-benchmarks/c/ddv-machzwd/ddv_machzwd_inw.i[452,465] [2023-11-19 04:10:34,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:10:34,849 WARN L675 CHandler]: The function __VERIFIER_nondet_sector_t is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 04:10:34,857 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:10:34,858 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:34 WrapperNode [2023-11-19 04:10:34,858 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:10:34,859 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:10:34,859 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:10:34,859 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:10:34,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:34" (1/1) ... [2023-11-19 04:10:34,955 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:34" (1/1) ... [2023-11-19 04:10:35,061 INFO L138 Inliner]: procedures = 474, calls = 839, calls flagged for inlining = 54, calls inlined = 38, statements flattened = 1089 [2023-11-19 04:10:35,061 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:10:35,062 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:10:35,062 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:10:35,062 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:10:35,072 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:34" (1/1) ... [2023-11-19 04:10:35,072 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:34" (1/1) ... [2023-11-19 04:10:35,080 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:34" (1/1) ... [2023-11-19 04:10:35,080 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:34" (1/1) ... [2023-11-19 04:10:35,120 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:34" (1/1) ... [2023-11-19 04:10:35,138 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:34" (1/1) ... [2023-11-19 04:10:35,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:34" (1/1) ... [2023-11-19 04:10:35,168 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:34" (1/1) ... [2023-11-19 04:10:35,199 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:10:35,203 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:10:35,204 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:10:35,204 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:10:35,205 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:34" (1/1) ... [2023-11-19 04:10:35,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:10:35,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:35,234 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:10:35,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:10:35,302 INFO L130 BoogieDeclarations]: Found specification of procedure zf_timer_off [2023-11-19 04:10:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_timer_off [2023-11-19 04:10:35,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 04:10:35,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_begin [2023-11-19 04:10:35,303 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 04:10:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 04:10:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:10:35,304 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 04:10:35,304 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 04:10:35,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 04:10:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_atomic_end [2023-11-19 04:10:35,305 INFO L130 BoogieDeclarations]: Found specification of procedure zf_get_control [2023-11-19 04:10:35,305 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_get_control [2023-11-19 04:10:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 04:10:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:10:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:10:35,306 INFO L130 BoogieDeclarations]: Found specification of procedure request_region [2023-11-19 04:10:35,306 INFO L138 BoogieDeclarations]: Found implementation of procedure request_region [2023-11-19 04:10:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:10:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:10:35,307 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 04:10:35,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2023-11-19 04:10:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irqsave [2023-11-19 04:10:35,308 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irqsave [2023-11-19 04:10:35,308 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2023-11-19 04:10:35,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2023-11-19 04:10:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure release_region [2023-11-19 04:10:35,309 INFO L138 BoogieDeclarations]: Found implementation of procedure release_region [2023-11-19 04:10:35,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:10:35,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:10:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_init [2023-11-19 04:10:35,310 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_init [2023-11-19 04:10:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 04:10:35,310 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 04:10:35,311 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 04:10:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2023-11-19 04:10:35,311 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2023-11-19 04:10:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:10:35,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:10:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2023-11-19 04:10:35,312 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2023-11-19 04:10:35,312 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_add [2023-11-19 04:10:35,313 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_add [2023-11-19 04:10:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2023-11-19 04:10:35,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~$Pointer$~TO~int [2023-11-19 04:10:35,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 04:10:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 04:10:35,314 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 04:10:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure outw [2023-11-19 04:10:35,314 INFO L138 BoogieDeclarations]: Found implementation of procedure outw [2023-11-19 04:10:35,314 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-19 04:10:35,315 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-19 04:10:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure misc_deregister [2023-11-19 04:10:35,315 INFO L138 BoogieDeclarations]: Found implementation of procedure misc_deregister [2023-11-19 04:10:35,315 INFO L130 BoogieDeclarations]: Found specification of procedure assert_context_process [2023-11-19 04:10:35,316 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_context_process [2023-11-19 04:10:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure zf_set_control [2023-11-19 04:10:35,316 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_set_control [2023-11-19 04:10:35,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:10:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure zf_readw [2023-11-19 04:10:35,317 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_readw [2023-11-19 04:10:35,317 INFO L130 BoogieDeclarations]: Found specification of procedure zf_ping [2023-11-19 04:10:35,317 INFO L138 BoogieDeclarations]: Found implementation of procedure zf_ping [2023-11-19 04:10:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2023-11-19 04:10:35,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~TO~int [2023-11-19 04:10:35,318 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-19 04:10:35,318 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-19 04:10:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 04:10:35,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 04:10:35,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:10:35,654 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:10:35,657 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:10:37,675 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:10:38,200 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:10:38,200 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 04:10:38,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:10:38 BoogieIcfgContainer [2023-11-19 04:10:38,210 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:10:38,213 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:10:38,213 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:10:38,216 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:10:38,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:10:32" (1/3) ... [2023-11-19 04:10:38,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1140580d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:10:38, skipping insertion in model container [2023-11-19 04:10:38,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:10:34" (2/3) ... [2023-11-19 04:10:38,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1140580d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:10:38, skipping insertion in model container [2023-11-19 04:10:38,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:10:38" (3/3) ... [2023-11-19 04:10:38,220 INFO L112 eAbstractionObserver]: Analyzing ICFG ddv_machzwd_inw.i [2023-11-19 04:10:38,240 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:10:38,240 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 04:10:38,322 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:10:38,331 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@173f87d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:10:38,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 04:10:38,339 INFO L276 IsEmpty]: Start isEmpty. Operand has 265 states, 159 states have (on average 1.3584905660377358) internal successors, (216), 166 states have internal predecessors, (216), 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) [2023-11-19 04:10:38,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-19 04:10:38,348 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:38,348 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:38,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting zf_readwErr0ASSERT_VIOLATIONERROR_FUNCTION === [zf_readwErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:10:38,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:38,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1521422023, now seen corresponding path program 1 times [2023-11-19 04:10:38,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:38,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167026449] [2023-11-19 04:10:38,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:38,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:10:39,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:39,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167026449] [2023-11-19 04:10:39,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167026449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:10:39,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:10:39,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:10:39,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788635689] [2023-11-19 04:10:39,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:10:39,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:10:39,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:10:39,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:10:39,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:10:39,112 INFO L87 Difference]: Start difference. First operand has 265 states, 159 states have (on average 1.3584905660377358) internal successors, (216), 166 states have internal predecessors, (216), 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 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:10:40,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:10:40,246 INFO L93 Difference]: Finished difference Result 528 states and 756 transitions. [2023-11-19 04:10:40,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:10:40,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 19 [2023-11-19 04:10:40,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:10:40,264 INFO L225 Difference]: With dead ends: 528 [2023-11-19 04:10:40,265 INFO L226 Difference]: Without dead ends: 261 [2023-11-19 04:10:40,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:10:40,283 INFO L413 NwaCegarLoop]: 311 mSDtfsCounter, 0 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:10:40,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 621 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 04:10:40,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2023-11-19 04:10:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2023-11-19 04:10:40,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 158 states have (on average 1.3417721518987342) internal successors, (212), 165 states have internal predecessors, (212), 76 states have call successors, (76), 26 states have call predecessors, (76), 26 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2023-11-19 04:10:40,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 363 transitions. [2023-11-19 04:10:40,361 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 363 transitions. Word has length 19 [2023-11-19 04:10:40,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:10:40,364 INFO L495 AbstractCegarLoop]: Abstraction has 261 states and 363 transitions. [2023-11-19 04:10:40,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 04:10:40,364 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 363 transitions. [2023-11-19 04:10:40,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-19 04:10:40,366 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:10:40,366 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:10:40,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:10:40,366 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zf_readwErr0ASSERT_VIOLATIONERROR_FUNCTION === [zf_readwErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 04:10:40,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:10:40,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1004891193, now seen corresponding path program 1 times [2023-11-19 04:10:40,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:10:40,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812551280] [2023-11-19 04:10:40,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:40,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:10:40,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:10:40,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:10:40,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812551280] [2023-11-19 04:10:40,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812551280] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 04:10:40,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442379258] [2023-11-19 04:10:40,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:10:40,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:10:40,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:10:40,713 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:10:40,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2122cb3e-cc82-4657-905f-a3395320044e/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 04:10:41,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:10:41,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 745 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:10:41,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:10:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:10:41,221 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:10:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:10:41,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442379258] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:10:41,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [254882855] [2023-11-19 04:10:41,288 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2023-11-19 04:10:41,288 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 04:10:41,294 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 04:10:41,299 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 04:10:41,300 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-11-19 04:10:59,400 INFO L197 IcfgInterpreter]: Interpreting procedure printk with input of size 182 for LOIs [2023-11-19 04:10:59,481 INFO L197 IcfgInterpreter]: Interpreting procedure spin_lock_init with input of size 761 for LOIs [2023-11-19 04:11:00,573 INFO L197 IcfgInterpreter]: Interpreting procedure zf_readw with input of size 180 for LOIs [2023-11-19 04:11:01,249 INFO L197 IcfgInterpreter]: Interpreting procedure outb with input of size 183 for LOIs [2023-11-19 04:11:01,298 INFO L180 IcfgInterpreter]: Interpretation finished [2023-11-19 04:11:14,074 WARN L293 SmtUtils]: Spent 11.81s on a formula simplification. DAG size of input: 751 DAG size of output: 687 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-19 04:11:27,007 WARN L293 SmtUtils]: Spent 12.66s on a formula simplification. DAG size of input: 761 DAG size of output: 697 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)