./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E --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 64bit --witnessprinter.graph.data.programhash 37b391ae58c5e6c2e62d05a454cd149d807feea3462a4157cf615889ce62b744 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-14 03:03:55,614 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-14 03:03:55,707 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-14 03:03:55,717 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-14 03:03:55,718 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-14 03:03:55,750 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-14 03:03:55,751 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-14 03:03:55,751 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-14 03:03:55,751 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-14 03:03:55,754 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-14 03:03:55,754 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-14 03:03:55,755 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-14 03:03:55,755 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-14 03:03:55,755 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-14 03:03:55,756 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-14 03:03:55,756 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-14 03:03:55,756 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-14 03:03:55,756 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-14 03:03:55,756 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-14 03:03:55,756 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-14 03:03:55,756 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-14 03:03:55,757 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-14 03:03:55,757 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-14 03:03:55,758 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-14 03:03:55,758 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-14 03:03:55,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-14 03:03:55,758 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-14 03:03:55,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-14 03:03:55,758 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-14 03:03:55,758 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-14 03:03:55,758 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-14 03:03:55,758 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-14 03:03:55,759 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-14 03:03:55,759 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-14 03:03:55,759 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-14 03:03:55,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:03:55,760 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-14 03:03:55,760 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-14 03:03:55,760 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-14 03:03:55,760 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-14 03:03:55,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-14 03:03:55,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-14 03:03:55,760 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-14 03:03:55,760 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-14 03:03:55,761 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37b391ae58c5e6c2e62d05a454cd149d807feea3462a4157cf615889ce62b744 [2024-11-14 03:03:56,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-14 03:03:56,088 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-14 03:03:56,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-14 03:03:56,092 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-14 03:03:56,093 INFO L274 PluginConnector]: CDTParser initialized [2024-11-14 03:03:56,094 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/../../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i Unable to find full path for "g++" [2024-11-14 03:03:58,280 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-14 03:03:58,812 INFO L384 CDTParser]: Found 1 translation units. [2024-11-14 03:03:58,812 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2024-11-14 03:03:58,858 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/data/6279a000d/31dab13452494504acaba16a754f3f2d/FLAGfad51deba [2024-11-14 03:03:59,336 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/data/6279a000d/31dab13452494504acaba16a754f3f2d [2024-11-14 03:03:59,340 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-14 03:03:59,341 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-14 03:03:59,344 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-14 03:03:59,344 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-14 03:03:59,349 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-14 03:03:59,350 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:03:59" (1/1) ... [2024-11-14 03:03:59,353 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40418581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:03:59, skipping insertion in model container [2024-11-14 03:03:59,354 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 03:03:59" (1/1) ... [2024-11-14 03:03:59,462 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-14 03:04:00,870 WARN L250 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_54b05654-a5f9-434b-b408-b97b5beb8e1f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2024-11-14 03:04:00,922 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:04:01,019 INFO L200 MainTranslator]: Completed pre-run [2024-11-14 03:04:01,109 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [2769-2770] [2024-11-14 03:04:01,113 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [2796] [2024-11-14 03:04:01,114 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2799] [2024-11-14 03:04:01,115 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2802] [2024-11-14 03:04:01,115 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2805] [2024-11-14 03:04:01,191 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3649] [2024-11-14 03:04:01,192 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3671] [2024-11-14 03:04:01,339 WARN L250 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_54b05654-a5f9-434b-b408-b97b5beb8e1f/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2024-11-14 03:04:01,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-14 03:04:01,465 INFO L204 MainTranslator]: Completed translation [2024-11-14 03:04:01,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:04:01 WrapperNode [2024-11-14 03:04:01,466 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-14 03:04:01,467 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-14 03:04:01,467 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-14 03:04:01,467 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-14 03:04:01,472 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:04:01" (1/1) ... [2024-11-14 03:04:01,536 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:04:01" (1/1) ... [2024-11-14 03:04:01,747 INFO L138 Inliner]: procedures = 189, calls = 2554, calls flagged for inlining = 78, calls inlined = 78, statements flattened = 4875 [2024-11-14 03:04:01,747 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-14 03:04:01,748 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-14 03:04:01,748 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-14 03:04:01,748 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-14 03:04:01,755 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:04:01" (1/1) ... [2024-11-14 03:04:01,756 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:04:01" (1/1) ... [2024-11-14 03:04:01,808 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:04:01" (1/1) ... [2024-11-14 03:04:01,808 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:04:01" (1/1) ... [2024-11-14 03:04:02,015 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:04:01" (1/1) ... [2024-11-14 03:04:02,044 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:04:01" (1/1) ... [2024-11-14 03:04:02,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:04:01" (1/1) ... [2024-11-14 03:04:02,092 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:04:01" (1/1) ... [2024-11-14 03:04:02,135 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-14 03:04:02,137 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-14 03:04:02,138 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-14 03:04:02,138 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-14 03:04:02,139 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:04:01" (1/1) ... [2024-11-14 03:04:02,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-14 03:04:02,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:04:02,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-14 03:04:02,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-14 03:04:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2024-11-14 03:04:02,257 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2024-11-14 03:04:02,257 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2024-11-14 03:04:02,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2024-11-14 03:04:02,258 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2024-11-14 03:04:02,258 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2024-11-14 03:04:02,258 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2024-11-14 03:04:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2024-11-14 03:04:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-14 03:04:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-14 03:04:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-14 03:04:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-14 03:04:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-14 03:04:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-14 03:04:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-14 03:04:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-14 03:04:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2024-11-14 03:04:02,261 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2024-11-14 03:04:02,261 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2024-11-14 03:04:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2024-11-14 03:04:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-14 03:04:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-14 03:04:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2024-11-14 03:04:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2024-11-14 03:04:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2024-11-14 03:04:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2024-11-14 03:04:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2024-11-14 03:04:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2024-11-14 03:04:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-14 03:04:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-14 03:04:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2024-11-14 03:04:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2024-11-14 03:04:02,262 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2024-11-14 03:04:02,262 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2024-11-14 03:04:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2024-11-14 03:04:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2024-11-14 03:04:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2024-11-14 03:04:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2024-11-14 03:04:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2024-11-14 03:04:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2024-11-14 03:04:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2024-11-14 03:04:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2024-11-14 03:04:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-14 03:04:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-14 03:04:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-14 03:04:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-14 03:04:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-14 03:04:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2024-11-14 03:04:02,263 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2024-11-14 03:04:02,263 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2024-11-14 03:04:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2024-11-14 03:04:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2024-11-14 03:04:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2024-11-14 03:04:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-14 03:04:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-14 03:04:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-14 03:04:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-14 03:04:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2024-11-14 03:04:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2024-11-14 03:04:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-14 03:04:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-14 03:04:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-14 03:04:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-14 03:04:02,264 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2024-11-14 03:04:02,264 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2024-11-14 03:04:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-14 03:04:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2024-11-14 03:04:02,269 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2024-11-14 03:04:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-14 03:04:02,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-14 03:04:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2024-11-14 03:04:02,269 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2024-11-14 03:04:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2024-11-14 03:04:02,269 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2024-11-14 03:04:02,269 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2024-11-14 03:04:02,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2024-11-14 03:04:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-14 03:04:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2024-11-14 03:04:02,270 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2024-11-14 03:04:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2024-11-14 03:04:02,270 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2024-11-14 03:04:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-11-14 03:04:02,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-11-14 03:04:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-14 03:04:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-14 03:04:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2024-11-14 03:04:02,270 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2024-11-14 03:04:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2024-11-14 03:04:02,270 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2024-11-14 03:04:02,270 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2024-11-14 03:04:02,271 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2024-11-14 03:04:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-14 03:04:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2024-11-14 03:04:02,271 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2024-11-14 03:04:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2024-11-14 03:04:02,271 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2024-11-14 03:04:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2024-11-14 03:04:02,271 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2024-11-14 03:04:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2024-11-14 03:04:02,271 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2024-11-14 03:04:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2024-11-14 03:04:02,271 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2024-11-14 03:04:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2024-11-14 03:04:02,271 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2024-11-14 03:04:02,271 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-14 03:04:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-14 03:04:02,276 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2024-11-14 03:04:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2024-11-14 03:04:02,276 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2024-11-14 03:04:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2024-11-14 03:04:02,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-14 03:04:02,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-14 03:04:02,276 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2024-11-14 03:04:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2024-11-14 03:04:02,276 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2024-11-14 03:04:02,276 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2024-11-14 03:04:02,276 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-14 03:04:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-14 03:04:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2024-11-14 03:04:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2024-11-14 03:04:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-11-14 03:04:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-11-14 03:04:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2024-11-14 03:04:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2024-11-14 03:04:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2024-11-14 03:04:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2024-11-14 03:04:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2024-11-14 03:04:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2024-11-14 03:04:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-11-14 03:04:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-11-14 03:04:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2024-11-14 03:04:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2024-11-14 03:04:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2024-11-14 03:04:02,277 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2024-11-14 03:04:02,277 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2024-11-14 03:04:02,278 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2024-11-14 03:04:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-14 03:04:02,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-14 03:04:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2024-11-14 03:04:02,278 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2024-11-14 03:04:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2024-11-14 03:04:02,278 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2024-11-14 03:04:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2024-11-14 03:04:02,278 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2024-11-14 03:04:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2024-11-14 03:04:02,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2024-11-14 03:04:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-14 03:04:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2024-11-14 03:04:02,278 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2024-11-14 03:04:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-14 03:04:02,278 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2024-11-14 03:04:02,278 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2024-11-14 03:04:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-14 03:04:02,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-14 03:04:02,283 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-14 03:04:02,283 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-14 03:04:03,043 INFO L238 CfgBuilder]: Building ICFG [2024-11-14 03:04:03,047 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-14 03:04:03,341 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-14 03:04:15,091 INFO L? ?]: Removed 1467 outVars from TransFormulas that were not future-live. [2024-11-14 03:04:15,093 INFO L287 CfgBuilder]: Performing block encoding [2024-11-14 03:04:16,169 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-14 03:04:16,170 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-14 03:04:16,171 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:04:16 BoogieIcfgContainer [2024-11-14 03:04:16,171 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-14 03:04:16,174 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-14 03:04:16,174 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-14 03:04:16,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-14 03:04:16,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 03:03:59" (1/3) ... [2024-11-14 03:04:16,180 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161acb88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:04:16, skipping insertion in model container [2024-11-14 03:04:16,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 03:04:01" (2/3) ... [2024-11-14 03:04:16,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@161acb88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 03:04:16, skipping insertion in model container [2024-11-14 03:04:16,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 03:04:16" (3/3) ... [2024-11-14 03:04:16,183 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2024-11-14 03:04:16,201 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-14 03:04:16,204 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i that has 71 procedures, 1088 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-14 03:04:16,311 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-14 03:04:16,327 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=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;@ac4ddb6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-14 03:04:16,327 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-14 03:04:16,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 1087 states, 652 states have (on average 1.357361963190184) internal successors, (885), 693 states have internal predecessors, (885), 364 states have call successors, (364), 70 states have call predecessors, (364), 69 states have return successors, (359), 356 states have call predecessors, (359), 359 states have call successors, (359) [2024-11-14 03:04:16,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-14 03:04:16,354 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:04:16,354 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:04:16,355 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:04:16,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:04:16,361 INFO L85 PathProgramCache]: Analyzing trace with hash -823178605, now seen corresponding path program 1 times [2024-11-14 03:04:16,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:04:16,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850619644] [2024-11-14 03:04:16,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:04:16,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:04:19,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:04:20,407 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-14 03:04:20,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:04:20,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850619644] [2024-11-14 03:04:20,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850619644] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:04:20,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:04:20,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:04:20,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234970897] [2024-11-14 03:04:20,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:04:20,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:04:20,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:04:20,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:04:20,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:04:20,448 INFO L87 Difference]: Start difference. First operand has 1087 states, 652 states have (on average 1.357361963190184) internal successors, (885), 693 states have internal predecessors, (885), 364 states have call successors, (364), 70 states have call predecessors, (364), 69 states have return successors, (359), 356 states have call predecessors, (359), 359 states have call successors, (359) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 03:04:22,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:04:24,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:04:26,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:04:26,712 INFO L93 Difference]: Finished difference Result 3120 states and 4621 transitions. [2024-11-14 03:04:26,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:04:26,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 135 [2024-11-14 03:04:26,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:04:26,761 INFO L225 Difference]: With dead ends: 3120 [2024-11-14 03:04:26,762 INFO L226 Difference]: Without dead ends: 2047 [2024-11-14 03:04:26,776 INFO L431 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 [2024-11-14 03:04:26,782 INFO L432 NwaCegarLoop]: 1445 mSDtfsCounter, 1507 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 2795 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:04:26,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 2795 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 327 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2024-11-14 03:04:26,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2024-11-14 03:04:27,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 2041. [2024-11-14 03:04:27,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1236 states have (on average 1.3495145631067962) internal successors, (1668), 1292 states have internal predecessors, (1668), 671 states have call successors, (671), 134 states have call predecessors, (671), 133 states have return successors, (658), 652 states have call predecessors, (658), 658 states have call successors, (658) [2024-11-14 03:04:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2997 transitions. [2024-11-14 03:04:27,091 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2997 transitions. Word has length 135 [2024-11-14 03:04:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:04:27,092 INFO L471 AbstractCegarLoop]: Abstraction has 2041 states and 2997 transitions. [2024-11-14 03:04:27,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-14 03:04:27,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2997 transitions. [2024-11-14 03:04:27,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-14 03:04:27,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:04:27,098 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:04:27,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-14 03:04:27,098 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:04:27,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:04:27,103 INFO L85 PathProgramCache]: Analyzing trace with hash -184907004, now seen corresponding path program 1 times [2024-11-14 03:04:27,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:04:27,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056891126] [2024-11-14 03:04:27,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:04:27,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:04:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:04:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-14 03:04:29,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:04:29,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056891126] [2024-11-14 03:04:29,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056891126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:04:29,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:04:29,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:04:29,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334655320] [2024-11-14 03:04:29,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:04:29,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:04:29,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:04:29,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:04:29,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:04:29,840 INFO L87 Difference]: Start difference. First operand 2041 states and 2997 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-14 03:04:31,945 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:04:34,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:04:34,095 INFO L93 Difference]: Finished difference Result 4020 states and 5909 transitions. [2024-11-14 03:04:34,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:04:34,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 135 [2024-11-14 03:04:34,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:04:34,135 INFO L225 Difference]: With dead ends: 4020 [2024-11-14 03:04:34,135 INFO L226 Difference]: Without dead ends: 3995 [2024-11-14 03:04:34,139 INFO L431 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 [2024-11-14 03:04:34,140 INFO L432 NwaCegarLoop]: 1419 mSDtfsCounter, 1526 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 2750 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-14 03:04:34,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 2750 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 321 Invalid, 1 Unknown, 0 Unchecked, 4.0s Time] [2024-11-14 03:04:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2024-11-14 03:04:34,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3991. [2024-11-14 03:04:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3991 states, 2424 states have (on average 1.3481848184818481) internal successors, (3268), 2524 states have internal predecessors, (3268), 1307 states have call successors, (1307), 262 states have call predecessors, (1307), 259 states have return successors, (1295), 1280 states have call predecessors, (1295), 1295 states have call successors, (1295) [2024-11-14 03:04:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 5870 transitions. [2024-11-14 03:04:34,424 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 5870 transitions. Word has length 135 [2024-11-14 03:04:34,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:04:34,426 INFO L471 AbstractCegarLoop]: Abstraction has 3991 states and 5870 transitions. [2024-11-14 03:04:34,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-14 03:04:34,427 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 5870 transitions. [2024-11-14 03:04:34,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-14 03:04:34,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:04:34,433 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:04:34,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-14 03:04:34,433 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:04:34,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:04:34,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1438089968, now seen corresponding path program 1 times [2024-11-14 03:04:34,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:04:34,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772917779] [2024-11-14 03:04:34,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:04:34,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:04:37,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:04:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-14 03:04:37,418 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:04:37,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772917779] [2024-11-14 03:04:37,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772917779] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:04:37,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:04:37,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:04:37,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441071532] [2024-11-14 03:04:37,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:04:37,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:04:37,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:04:37,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:04:37,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:04:37,421 INFO L87 Difference]: Start difference. First operand 3991 states and 5870 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-14 03:04:39,520 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:04:42,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:04:42,011 INFO L93 Difference]: Finished difference Result 11881 states and 17494 transitions. [2024-11-14 03:04:42,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:04:42,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2024-11-14 03:04:42,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:04:42,079 INFO L225 Difference]: With dead ends: 11881 [2024-11-14 03:04:42,079 INFO L226 Difference]: Without dead ends: 7917 [2024-11-14 03:04:42,101 INFO L431 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 [2024-11-14 03:04:42,102 INFO L432 NwaCegarLoop]: 1612 mSDtfsCounter, 1527 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 2952 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:04:42,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 2952 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 333 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-14 03:04:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7917 states. [2024-11-14 03:04:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7917 to 7906. [2024-11-14 03:04:42,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7906 states, 4809 states have (on average 1.3491370347265543) internal successors, (6488), 5001 states have internal predecessors, (6488), 2585 states have call successors, (2585), 516 states have call predecessors, (2585), 511 states have return successors, (2567), 2540 states have call predecessors, (2567), 2567 states have call successors, (2567) [2024-11-14 03:04:42,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 11640 transitions. [2024-11-14 03:04:42,624 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 11640 transitions. Word has length 136 [2024-11-14 03:04:42,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:04:42,624 INFO L471 AbstractCegarLoop]: Abstraction has 7906 states and 11640 transitions. [2024-11-14 03:04:42,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-14 03:04:42,625 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 11640 transitions. [2024-11-14 03:04:42,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-14 03:04:42,633 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:04:42,634 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:04:42,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-14 03:04:42,634 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:04:42,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:04:42,635 INFO L85 PathProgramCache]: Analyzing trace with hash -760374675, now seen corresponding path program 1 times [2024-11-14 03:04:42,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:04:42,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697303682] [2024-11-14 03:04:42,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:04:42,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:04:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:04:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-14 03:04:45,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:04:45,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697303682] [2024-11-14 03:04:45,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697303682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:04:45,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-14 03:04:45,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-14 03:04:45,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513826808] [2024-11-14 03:04:45,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:04:45,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-14 03:04:45,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:04:45,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-14 03:04:45,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-14 03:04:45,271 INFO L87 Difference]: Start difference. First operand 7906 states and 11640 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-14 03:04:47,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:04:49,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:04:49,911 INFO L93 Difference]: Finished difference Result 23648 states and 34829 transitions. [2024-11-14 03:04:49,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-14 03:04:49,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 153 [2024-11-14 03:04:49,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:04:50,101 INFO L225 Difference]: With dead ends: 23648 [2024-11-14 03:04:50,101 INFO L226 Difference]: Without dead ends: 15766 [2024-11-14 03:04:50,365 INFO L431 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 [2024-11-14 03:04:50,371 INFO L432 NwaCegarLoop]: 1467 mSDtfsCounter, 1518 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 2826 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-14 03:04:50,372 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 2826 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 323 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-14 03:04:50,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15766 states. [2024-11-14 03:04:51,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15766 to 15727. [2024-11-14 03:04:51,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15727 states, 9578 states have (on average 1.3497598663604093) internal successors, (12928), 9952 states have internal predecessors, (12928), 5133 states have call successors, (5133), 1023 states have call predecessors, (5133), 1015 states have return successors, (5113), 5055 states have call predecessors, (5113), 5113 states have call successors, (5113) [2024-11-14 03:04:51,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15727 states to 15727 states and 23174 transitions. [2024-11-14 03:04:51,460 INFO L78 Accepts]: Start accepts. Automaton has 15727 states and 23174 transitions. Word has length 153 [2024-11-14 03:04:51,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:04:51,461 INFO L471 AbstractCegarLoop]: Abstraction has 15727 states and 23174 transitions. [2024-11-14 03:04:51,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2024-11-14 03:04:51,461 INFO L276 IsEmpty]: Start isEmpty. Operand 15727 states and 23174 transitions. [2024-11-14 03:04:51,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-14 03:04:51,470 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:04:51,470 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:04:51,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-14 03:04:51,471 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:04:51,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:04:51,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1375457048, now seen corresponding path program 1 times [2024-11-14 03:04:51,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:04:51,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820955949] [2024-11-14 03:04:51,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:04:51,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:04:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:04:55,723 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-14 03:04:55,723 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:04:55,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820955949] [2024-11-14 03:04:55,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820955949] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:04:55,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994095620] [2024-11-14 03:04:55,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:04:55,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:04:55,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:04:55,727 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:04:55,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-14 03:05:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:14,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 5293 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-14 03:05:14,838 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:05:15,032 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-14 03:05:15,032 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-14 03:05:15,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994095620] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-14 03:05:15,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-14 03:05:15,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-14 03:05:15,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865999512] [2024-11-14 03:05:15,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-14 03:05:15,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-14 03:05:15,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-14 03:05:15,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-14 03:05:15,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-14 03:05:15,035 INFO L87 Difference]: Start difference. First operand 15727 states and 23174 transitions. Second operand has 6 states, 4 states have (on average 14.25) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-14 03:05:17,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:05:19,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:05:21,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:05:23,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:05:25,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-14 03:05:29,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-14 03:05:29,977 INFO L93 Difference]: Finished difference Result 31474 states and 46382 transitions. [2024-11-14 03:05:29,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-14 03:05:29,978 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 14.25) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 155 [2024-11-14 03:05:29,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-14 03:05:30,102 INFO L225 Difference]: With dead ends: 31474 [2024-11-14 03:05:30,102 INFO L226 Difference]: Without dead ends: 15759 [2024-11-14 03:05:30,178 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-14 03:05:30,179 INFO L432 NwaCegarLoop]: 1403 mSDtfsCounter, 2 mSDsluCounter, 5597 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7000 SdHoareTripleChecker+Invalid, 845 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time [2024-11-14 03:05:30,180 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7000 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 836 Invalid, 5 Unknown, 0 Unchecked, 14.2s Time] [2024-11-14 03:05:30,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15759 states. [2024-11-14 03:05:31,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15759 to 15729. [2024-11-14 03:05:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15729 states, 9579 states have (on average 1.3498277481991858) internal successors, (12930), 9954 states have internal predecessors, (12930), 5133 states have call successors, (5133), 1023 states have call predecessors, (5133), 1016 states have return successors, (5114), 5055 states have call predecessors, (5114), 5113 states have call successors, (5114) [2024-11-14 03:05:31,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15729 states to 15729 states and 23177 transitions. [2024-11-14 03:05:31,208 INFO L78 Accepts]: Start accepts. Automaton has 15729 states and 23177 transitions. Word has length 155 [2024-11-14 03:05:31,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-14 03:05:31,208 INFO L471 AbstractCegarLoop]: Abstraction has 15729 states and 23177 transitions. [2024-11-14 03:05:31,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 14.25) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-14 03:05:31,210 INFO L276 IsEmpty]: Start isEmpty. Operand 15729 states and 23177 transitions. [2024-11-14 03:05:31,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-14 03:05:31,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-14 03:05:31,215 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-14 03:05:31,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-14 03:05:31,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:05:31,417 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-14 03:05:31,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-14 03:05:31,418 INFO L85 PathProgramCache]: Analyzing trace with hash 40467239, now seen corresponding path program 1 times [2024-11-14 03:05:31,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-14 03:05:31,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338613137] [2024-11-14 03:05:31,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:31,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-14 03:05:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:35,403 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-14 03:05:35,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-14 03:05:35,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338613137] [2024-11-14 03:05:35,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338613137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-14 03:05:35,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334767406] [2024-11-14 03:05:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-14 03:05:35,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-14 03:05:35,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/z3 [2024-11-14 03:05:35,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-14 03:05:35,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_54b05654-a5f9-434b-b408-b97b5beb8e1f/bin/utaipan-verify-sOmjnqqW8E/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-14 03:05:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-14 03:05:44,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 5368 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-14 03:05:44,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-14 03:05:45,048 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-11-14 03:05:45,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-14 03:05:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-14 03:05:46,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334767406] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-14 03:05:46,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1969156369] [2024-11-14 03:05:46,647 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2024-11-14 03:05:46,647 INFO L166 IcfgInterpreter]: Building call graph [2024-11-14 03:05:46,649 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-14 03:05:46,653 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-14 03:05:46,654 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-14 03:08:49,818 WARN L286 SmtUtils]: Spent 7.25s on a formula simplification that was a NOOP. DAG size: 5780 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:08:57,315 WARN L286 SmtUtils]: Spent 7.49s on a formula simplification that was a NOOP. DAG size: 5780 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:09:08,164 WARN L286 SmtUtils]: Spent 10.82s on a formula simplification. DAG size of input: 5786 DAG size of output: 5776 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:09:15,434 WARN L286 SmtUtils]: Spent 7.26s on a formula simplification that was a NOOP. DAG size: 5780 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:09:22,650 WARN L286 SmtUtils]: Spent 7.21s on a formula simplification that was a NOOP. DAG size: 5780 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:09:33,429 WARN L286 SmtUtils]: Spent 10.75s on a formula simplification. DAG size of input: 5786 DAG size of output: 5776 (called from [L 210] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2024-11-14 03:10:01,993 WARN L286 SmtUtils]: Spent 7.17s on a formula simplification that was a NOOP. DAG size: 5595 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 03:11:40,399 WARN L286 SmtUtils]: Spent 9.13s on a formula simplification that was a NOOP. DAG size: 5601 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 03:13:53,365 WARN L286 SmtUtils]: Spent 8.54s on a formula simplification that was a NOOP. DAG size: 5595 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 03:15:50,460 WARN L286 SmtUtils]: Spent 9.91s on a formula simplification that was a NOOP. DAG size: 5601 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-14 03:18:21,389 WARN L286 SmtUtils]: Spent 9.81s on a formula simplification that was a NOOP. DAG size: 5595 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)