./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 a0165632 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/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_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje --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 0.2.5-dev-a016563 [2024-11-09 05:29:38,550 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:29:38,695 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 05:29:38,704 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:29:38,705 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:29:38,743 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:29:38,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:29:38,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:29:38,746 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:29:38,747 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:29:38,747 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:29:38,748 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:29:38,749 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:29:38,751 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:29:38,752 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:29:38,752 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:29:38,753 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:29:38,753 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:29:38,753 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:29:38,754 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:29:38,758 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:29:38,759 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:29:38,760 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:29:38,760 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:29:38,760 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:29:38,761 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:29:38,761 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:29:38,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:29:38,762 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:29:38,766 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:29:38,767 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:29:38,767 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:29:38,767 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:29:38,769 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:29:38,769 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:29:38,769 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:29:38,770 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:29:38,770 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:29:38,770 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:29:38,771 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:29:38,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:29:38,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:29:38,773 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:29:38,773 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:29:38,774 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_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 37b391ae58c5e6c2e62d05a454cd149d807feea3462a4157cf615889ce62b744 [2024-11-09 05:29:39,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:29:39,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:29:39,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:29:39,184 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:29:39,184 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:29:39,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/../../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++" [2024-11-09 05:29:41,329 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:29:41,892 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:29:41,894 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/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 [2024-11-09 05:29:41,940 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/data/0df96dec5/6f053886f48f47f0ada4dc2245185b7b/FLAG708205746 [2024-11-09 05:29:42,399 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/data/0df96dec5/6f053886f48f47f0ada4dc2245185b7b [2024-11-09 05:29:42,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:29:42,403 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:29:42,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:29:42,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:29:42,412 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:29:42,413 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:29:42" (1/1) ... [2024-11-09 05:29:42,414 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6140e39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:42, skipping insertion in model container [2024-11-09 05:29:42,414 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:29:42" (1/1) ... [2024-11-09 05:29:42,537 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:29:44,001 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_c71e325b-5af9-40af-ba16-c67e2a0fd45f/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] [2024-11-09 05:29:44,158 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:29:44,320 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:29:44,404 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] [2024-11-09 05:29:44,407 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [2796] [2024-11-09 05:29:44,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2799] [2024-11-09 05:29:44,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2802] [2024-11-09 05:29:44,408 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [2805] [2024-11-09 05:29:44,475 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3649] [2024-11-09 05:29:44,477 WARN L75 lationResultReporter]: Unsoundness Warning: ignored call to __builtin_prefetch C: __builtin_prefetch((void const *)ep->ep_list.next) [3671] [2024-11-09 05:29:44,669 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_c71e325b-5af9-40af-ba16-c67e2a0fd45f/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] [2024-11-09 05:29:44,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:29:44,826 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:29:44,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:44 WrapperNode [2024-11-09 05:29:44,828 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:29:44,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:29:44,829 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:29:44,829 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:29:44,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:44" (1/1) ... [2024-11-09 05:29:44,948 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:44" (1/1) ... [2024-11-09 05:29:45,228 INFO L138 Inliner]: procedures = 189, calls = 2554, calls flagged for inlining = 78, calls inlined = 78, statements flattened = 4875 [2024-11-09 05:29:45,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:29:45,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:29:45,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:29:45,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:29:45,241 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:44" (1/1) ... [2024-11-09 05:29:45,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:44" (1/1) ... [2024-11-09 05:29:45,291 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:44" (1/1) ... [2024-11-09 05:29:45,291 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:44" (1/1) ... [2024-11-09 05:29:45,420 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:44" (1/1) ... [2024-11-09 05:29:45,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:44" (1/1) ... [2024-11-09 05:29:45,496 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:44" (1/1) ... [2024-11-09 05:29:45,520 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:44" (1/1) ... [2024-11-09 05:29:45,571 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:29:45,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:29:45,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:29:45,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:29:45,690 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:44" (1/1) ... [2024-11-09 05:29:45,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:29:45,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:29:45,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:29:45,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:29:45,807 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2024-11-09 05:29:45,808 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2024-11-09 05:29:45,809 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2024-11-09 05:29:45,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2024-11-09 05:29:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2024-11-09 05:29:45,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2024-11-09 05:29:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2024-11-09 05:29:45,810 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2024-11-09 05:29:45,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 05:29:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-09 05:29:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 05:29:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-09 05:29:45,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-09 05:29:45,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:29:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-09 05:29:45,812 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-09 05:29:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2024-11-09 05:29:45,812 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2024-11-09 05:29:45,812 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2024-11-09 05:29:45,813 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2024-11-09 05:29:45,813 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2024-11-09 05:29:45,814 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2024-11-09 05:29:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2024-11-09 05:29:45,815 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2024-11-09 05:29:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2024-11-09 05:29:45,815 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2024-11-09 05:29:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2024-11-09 05:29:45,816 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2024-11-09 05:29:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-09 05:29:45,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-09 05:29:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2024-11-09 05:29:45,818 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2024-11-09 05:29:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2024-11-09 05:29:45,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2024-11-09 05:29:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2024-11-09 05:29:45,819 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2024-11-09 05:29:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2024-11-09 05:29:45,819 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2024-11-09 05:29:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2024-11-09 05:29:45,820 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2024-11-09 05:29:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2024-11-09 05:29:45,820 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2024-11-09 05:29:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:29:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-09 05:29:45,820 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-09 05:29:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-09 05:29:45,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-09 05:29:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2024-11-09 05:29:45,821 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2024-11-09 05:29:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2024-11-09 05:29:45,821 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2024-11-09 05:29:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2024-11-09 05:29:45,822 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2024-11-09 05:29:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-09 05:29:45,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-09 05:29:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 05:29:45,822 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 05:29:45,823 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2024-11-09 05:29:45,823 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2024-11-09 05:29:45,823 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-09 05:29:45,824 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-09 05:29:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:29:45,824 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:29:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2024-11-09 05:29:45,825 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2024-11-09 05:29:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:29:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2024-11-09 05:29:45,825 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2024-11-09 05:29:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-09 05:29:45,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-09 05:29:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2024-11-09 05:29:45,827 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2024-11-09 05:29:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2024-11-09 05:29:45,827 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2024-11-09 05:29:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2024-11-09 05:29:45,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2024-11-09 05:29:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:29:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2024-11-09 05:29:45,828 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2024-11-09 05:29:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2024-11-09 05:29:45,829 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2024-11-09 05:29:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2024-11-09 05:29:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2024-11-09 05:29:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:29:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 05:29:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2024-11-09 05:29:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2024-11-09 05:29:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2024-11-09 05:29:45,831 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2024-11-09 05:29:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2024-11-09 05:29:45,832 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2024-11-09 05:29:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 05:29:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2024-11-09 05:29:45,832 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2024-11-09 05:29:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2024-11-09 05:29:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2024-11-09 05:29:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2024-11-09 05:29:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2024-11-09 05:29:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2024-11-09 05:29:45,833 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2024-11-09 05:29:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2024-11-09 05:29:45,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2024-11-09 05:29:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2024-11-09 05:29:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2024-11-09 05:29:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-09 05:29:45,835 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-09 05:29:45,835 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2024-11-09 05:29:45,836 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2024-11-09 05:29:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2024-11-09 05:29:45,836 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2024-11-09 05:29:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:29:45,836 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2024-11-09 05:29:45,837 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2024-11-09 05:29:45,837 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2024-11-09 05:29:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2024-11-09 05:29:45,838 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2024-11-09 05:29:45,838 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-09 05:29:45,838 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-09 05:29:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2024-11-09 05:29:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2024-11-09 05:29:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-11-09 05:29:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-11-09 05:29:45,839 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2024-11-09 05:29:45,839 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2024-11-09 05:29:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2024-11-09 05:29:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2024-11-09 05:29:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2024-11-09 05:29:45,840 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2024-11-09 05:29:45,840 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-11-09 05:29:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-11-09 05:29:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2024-11-09 05:29:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2024-11-09 05:29:45,841 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2024-11-09 05:29:45,841 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2024-11-09 05:29:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2024-11-09 05:29:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2024-11-09 05:29:45,842 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 05:29:45,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2024-11-09 05:29:45,843 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2024-11-09 05:29:45,843 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2024-11-09 05:29:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2024-11-09 05:29:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2024-11-09 05:29:45,844 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2024-11-09 05:29:45,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2024-11-09 05:29:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2024-11-09 05:29:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2024-11-09 05:29:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:29:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2024-11-09 05:29:45,845 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2024-11-09 05:29:45,845 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-09 05:29:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2024-11-09 05:29:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2024-11-09 05:29:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:29:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:29:45,846 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-09 05:29:45,846 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-09 05:29:46,687 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:29:46,694 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:29:46,948 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-09 05:30:00,563 INFO L? ?]: Removed 1467 outVars from TransFormulas that were not future-live. [2024-11-09 05:30:00,563 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:30:02,000 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:30:02,000 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-09 05:30:02,004 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:30:02 BoogieIcfgContainer [2024-11-09 05:30:02,004 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:30:02,006 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:30:02,006 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:30:02,013 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:30:02,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:29:42" (1/3) ... [2024-11-09 05:30:02,014 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6ff0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:30:02, skipping insertion in model container [2024-11-09 05:30:02,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:29:44" (2/3) ... [2024-11-09 05:30:02,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f6ff0e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:30:02, skipping insertion in model container [2024-11-09 05:30:02,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:30:02" (3/3) ... [2024-11-09 05:30:02,018 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 [2024-11-09 05:30:02,043 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:30:02,043 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:30:02,176 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:30:02,186 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;@1b2106c0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:30:02,186 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:30:02,200 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) [2024-11-09 05:30:02,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-09 05:30:02,224 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:30:02,225 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] [2024-11-09 05:30:02,226 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:30:02,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:30:02,236 INFO L85 PathProgramCache]: Analyzing trace with hash -823178605, now seen corresponding path program 1 times [2024-11-09 05:30:02,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:30:02,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401372273] [2024-11-09 05:30:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:02,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:30:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:30:07,971 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-09 05:30:07,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:30:07,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401372273] [2024-11-09 05:30:07,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401372273] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:30:07,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:30:07,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:30:07,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74547884] [2024-11-09 05:30:07,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:30:07,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:30:07,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:30:08,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:30:08,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:30:08,019 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) [2024-11-09 05:30:10,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:30:12,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:30:14,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:30:14,519 INFO L93 Difference]: Finished difference Result 3120 states and 4621 transitions. [2024-11-09 05:30:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:30:14,523 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 [2024-11-09 05:30:14,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:30:14,570 INFO L225 Difference]: With dead ends: 3120 [2024-11-09 05:30:14,571 INFO L226 Difference]: Without dead ends: 2047 [2024-11-09 05:30:14,584 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 [2024-11-09 05:30:14,588 INFO L432 NwaCegarLoop]: 1445 mSDtfsCounter, 1507 mSDsluCounter, 1350 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s 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, 6.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:30:14,589 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1507 Valid, 2795 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 327 Invalid, 2 Unknown, 0 Unchecked, 6.2s Time] [2024-11-09 05:30:14,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2047 states. [2024-11-09 05:30:14,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2047 to 2041. [2024-11-09 05:30:14,848 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) [2024-11-09 05:30:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2997 transitions. [2024-11-09 05:30:14,881 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2997 transitions. Word has length 135 [2024-11-09 05:30:14,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:30:14,884 INFO L471 AbstractCegarLoop]: Abstraction has 2041 states and 2997 transitions. [2024-11-09 05:30:14,884 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) [2024-11-09 05:30:14,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2997 transitions. [2024-11-09 05:30:14,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2024-11-09 05:30:14,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:30:14,896 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] [2024-11-09 05:30:14,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:30:14,897 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:30:14,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:30:14,898 INFO L85 PathProgramCache]: Analyzing trace with hash -184907004, now seen corresponding path program 1 times [2024-11-09 05:30:14,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:30:14,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633357028] [2024-11-09 05:30:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:14,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:30:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:30:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-09 05:30:18,604 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:30:18,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633357028] [2024-11-09 05:30:18,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633357028] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:30:18,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:30:18,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:30:18,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003977819] [2024-11-09 05:30:18,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:30:18,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:30:18,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:30:18,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:30:18,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:30:18,613 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) [2024-11-09 05:30:20,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:30:23,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:30:23,169 INFO L93 Difference]: Finished difference Result 4020 states and 5909 transitions. [2024-11-09 05:30:23,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:30:23,170 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 [2024-11-09 05:30:23,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:30:23,217 INFO L225 Difference]: With dead ends: 4020 [2024-11-09 05:30:23,217 INFO L226 Difference]: Without dead ends: 3995 [2024-11-09 05:30:23,222 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 [2024-11-09 05:30:23,224 INFO L432 NwaCegarLoop]: 1419 mSDtfsCounter, 1526 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s 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, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:30:23,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 2750 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 321 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 05:30:23,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3995 states. [2024-11-09 05:30:23,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3995 to 3991. [2024-11-09 05:30:23,582 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) [2024-11-09 05:30:23,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 5870 transitions. [2024-11-09 05:30:23,628 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 5870 transitions. Word has length 135 [2024-11-09 05:30:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:30:23,629 INFO L471 AbstractCegarLoop]: Abstraction has 3991 states and 5870 transitions. [2024-11-09 05:30:23,630 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) [2024-11-09 05:30:23,630 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 5870 transitions. [2024-11-09 05:30:23,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-09 05:30:23,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:30:23,634 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] [2024-11-09 05:30:23,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:30:23,635 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:30:23,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:30:23,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1438089968, now seen corresponding path program 1 times [2024-11-09 05:30:23,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:30:23,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94008726] [2024-11-09 05:30:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:23,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:30:26,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:30:27,528 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-09 05:30:27,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:30:27,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94008726] [2024-11-09 05:30:27,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94008726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:30:27,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:30:27,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:30:27,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544300928] [2024-11-09 05:30:27,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:30:27,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:30:27,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:30:27,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:30:27,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:30:27,539 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) [2024-11-09 05:30:29,667 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 [] [2024-11-09 05:30:32,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:30:32,296 INFO L93 Difference]: Finished difference Result 11881 states and 17494 transitions. [2024-11-09 05:30:32,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:30:32,297 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 [2024-11-09 05:30:32,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:30:32,372 INFO L225 Difference]: With dead ends: 11881 [2024-11-09 05:30:32,372 INFO L226 Difference]: Without dead ends: 7917 [2024-11-09 05:30:32,400 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 [2024-11-09 05:30:32,405 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, 4.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:30:32,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 2952 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 333 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-11-09 05:30:32,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7917 states. [2024-11-09 05:30:32,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7917 to 7906. [2024-11-09 05:30:32,936 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) [2024-11-09 05:30:32,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7906 states to 7906 states and 11640 transitions. [2024-11-09 05:30:32,999 INFO L78 Accepts]: Start accepts. Automaton has 7906 states and 11640 transitions. Word has length 136 [2024-11-09 05:30:33,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:30:33,000 INFO L471 AbstractCegarLoop]: Abstraction has 7906 states and 11640 transitions. [2024-11-09 05:30:33,000 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) [2024-11-09 05:30:33,000 INFO L276 IsEmpty]: Start isEmpty. Operand 7906 states and 11640 transitions. [2024-11-09 05:30:33,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-09 05:30:33,010 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:30:33,010 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] [2024-11-09 05:30:33,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:30:33,011 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:30:33,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:30:33,011 INFO L85 PathProgramCache]: Analyzing trace with hash -760374675, now seen corresponding path program 1 times [2024-11-09 05:30:33,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:30:33,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534963067] [2024-11-09 05:30:33,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:33,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:30:36,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:30:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-09 05:30:36,798 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:30:36,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534963067] [2024-11-09 05:30:36,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534963067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:30:36,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:30:36,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:30:36,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699859494] [2024-11-09 05:30:36,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:30:36,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:30:36,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:30:36,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:30:36,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:30:36,803 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) [2024-11-09 05:30:38,936 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 [] [2024-11-09 05:30:41,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:30:41,794 INFO L93 Difference]: Finished difference Result 23648 states and 34829 transitions. [2024-11-09 05:30:41,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:30:41,795 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 [2024-11-09 05:30:41,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:30:41,976 INFO L225 Difference]: With dead ends: 23648 [2024-11-09 05:30:41,976 INFO L226 Difference]: Without dead ends: 15766 [2024-11-09 05:30:42,031 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 [2024-11-09 05:30:42,032 INFO L432 NwaCegarLoop]: 1467 mSDtfsCounter, 1518 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s 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, 4.2s IncrementalHoareTripleChecker+Time [2024-11-09 05:30:42,033 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 2826 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 323 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2024-11-09 05:30:42,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15766 states. [2024-11-09 05:30:43,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15766 to 15727. [2024-11-09 05:30:43,144 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) [2024-11-09 05:30:43,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15727 states to 15727 states and 23174 transitions. [2024-11-09 05:30:43,266 INFO L78 Accepts]: Start accepts. Automaton has 15727 states and 23174 transitions. Word has length 153 [2024-11-09 05:30:43,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:30:43,268 INFO L471 AbstractCegarLoop]: Abstraction has 15727 states and 23174 transitions. [2024-11-09 05:30:43,269 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) [2024-11-09 05:30:43,269 INFO L276 IsEmpty]: Start isEmpty. Operand 15727 states and 23174 transitions. [2024-11-09 05:30:43,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-09 05:30:43,276 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:30:43,276 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] [2024-11-09 05:30:43,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:30:43,277 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:30:43,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:30:43,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1375457048, now seen corresponding path program 1 times [2024-11-09 05:30:43,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:30:43,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138100775] [2024-11-09 05:30:43,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:43,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:30:46,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:30:48,411 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-09 05:30:48,412 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:30:48,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138100775] [2024-11-09 05:30:48,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138100775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:30:48,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270549551] [2024-11-09 05:30:48,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:30:48,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:30:48,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:30:48,417 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:30:48,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 05:31:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:31:08,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 5293 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-09 05:31:08,471 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:31:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2024-11-09 05:31:08,693 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 05:31:08,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270549551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:31:08,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 05:31:08,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2024-11-09 05:31:08,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076457396] [2024-11-09 05:31:08,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:31:08,695 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-09 05:31:08,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:31:08,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-09 05:31:08,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:31:08,696 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) [2024-11-09 05:31:10,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:31:12,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:31:14,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:31:16,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:31:18,958 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 [] [2024-11-09 05:31:23,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:31:23,702 INFO L93 Difference]: Finished difference Result 31474 states and 46382 transitions. [2024-11-09 05:31:23,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-09 05:31:23,703 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 [2024-11-09 05:31:23,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:31:23,838 INFO L225 Difference]: With dead ends: 31474 [2024-11-09 05:31:23,838 INFO L226 Difference]: Without dead ends: 15759 [2024-11-09 05:31:23,917 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 [2024-11-09 05:31:23,918 INFO L432 NwaCegarLoop]: 1403 mSDtfsCounter, 2 mSDsluCounter, 5597 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 4 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s 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, 14.3s IncrementalHoareTripleChecker+Time [2024-11-09 05:31:23,918 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7000 Invalid, 845 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 836 Invalid, 5 Unknown, 0 Unchecked, 14.3s Time] [2024-11-09 05:31:23,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15759 states. [2024-11-09 05:31:24,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15759 to 15729. [2024-11-09 05:31:25,005 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) [2024-11-09 05:31:25,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15729 states to 15729 states and 23177 transitions. [2024-11-09 05:31:25,117 INFO L78 Accepts]: Start accepts. Automaton has 15729 states and 23177 transitions. Word has length 155 [2024-11-09 05:31:25,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:31:25,118 INFO L471 AbstractCegarLoop]: Abstraction has 15729 states and 23177 transitions. [2024-11-09 05:31:25,118 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) [2024-11-09 05:31:25,119 INFO L276 IsEmpty]: Start isEmpty. Operand 15729 states and 23177 transitions. [2024-11-09 05:31:25,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-09 05:31:25,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:31:25,128 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] [2024-11-09 05:31:25,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-09 05:31:25,328 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:31:25,330 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:31:25,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:31:25,332 INFO L85 PathProgramCache]: Analyzing trace with hash 40467239, now seen corresponding path program 1 times [2024-11-09 05:31:25,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:31:25,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5129696] [2024-11-09 05:31:25,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:31:25,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:31:28,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:31:30,766 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-09 05:31:30,766 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:31:30,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5129696] [2024-11-09 05:31:30,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5129696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 05:31:30,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926410383] [2024-11-09 05:31:30,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:31:30,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 05:31:30,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:31:30,770 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 05:31:30,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c71e325b-5af9-40af-ba16-c67e2a0fd45f/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 05:31:40,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:31:41,019 INFO L255 TraceCheckSpWp]: Trace formula consists of 5368 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-09 05:31:41,030 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 05:31:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2024-11-09 05:31:41,279 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 05:31:43,255 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2024-11-09 05:31:43,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926410383] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 05:31:43,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1711946719] [2024-11-09 05:31:43,285 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2024-11-09 05:31:43,285 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 05:31:43,292 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 05:31:43,302 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 05:31:43,303 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2024-11-09 05:35:31,502 WARN L286 SmtUtils]: Spent 9.76s 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) [2024-11-09 05:35:42,124 WARN L286 SmtUtils]: Spent 10.61s 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) [2024-11-09 05:35:58,312 WARN L286 SmtUtils]: Spent 16.15s 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) [2024-11-09 05:36:09,141 WARN L286 SmtUtils]: Spent 10.82s 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) [2024-11-09 05:36:20,077 WARN L286 SmtUtils]: Spent 10.92s 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) [2024-11-09 05:36:35,333 WARN L286 SmtUtils]: Spent 15.22s 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) [2024-11-09 05:37:18,184 WARN L286 SmtUtils]: Spent 10.80s 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) [2024-11-09 05:39:17,386 WARN L286 SmtUtils]: Spent 8.34s 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) [2024-11-09 05:41:31,661 WARN L286 SmtUtils]: Spent 8.53s 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)