./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a0165632 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/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_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/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_00afabba-3892-4c00-aa6a-057dc35a23cc/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 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-09 05:57:40,303 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 05:57:40,409 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/config/svcomp-Reach-64bit-Taipan_Default.epf [2024-11-09 05:57:40,419 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 05:57:40,421 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 05:57:40,456 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 05:57:40,457 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 05:57:40,458 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 05:57:40,458 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 05:57:40,459 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 05:57:40,460 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-09 05:57:40,460 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-09 05:57:40,461 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-09 05:57:40,462 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-09 05:57:40,464 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-09 05:57:40,465 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-09 05:57:40,465 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-09 05:57:40,466 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-09 05:57:40,466 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-09 05:57:40,466 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-09 05:57:40,467 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-09 05:57:40,471 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-09 05:57:40,472 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 05:57:40,472 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 05:57:40,473 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 05:57:40,473 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 05:57:40,473 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 05:57:40,473 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 05:57:40,485 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 05:57:40,486 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 05:57:40,487 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 05:57:40,487 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 05:57:40,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-09 05:57:40,488 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 05:57:40,489 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 05:57:40,489 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:57:40,490 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 05:57:40,490 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 05:57:40,490 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 05:57:40,491 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-09 05:57:40,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 05:57:40,492 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 05:57:40,492 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-09 05:57:40,492 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 05:57:40,493 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_00afabba-3892-4c00-aa6a-057dc35a23cc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66b2f104726c03e3846e38f6b09c6a45d6c8d058156e96895db9342600740310 [2024-11-09 05:57:40,832 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 05:57:40,867 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 05:57:40,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 05:57:40,872 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 05:57:40,873 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 05:57:40,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i Unable to find full path for "g++" [2024-11-09 05:57:42,987 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 05:57:43,758 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 05:57:43,761 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2024-11-09 05:57:43,831 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/data/e90f79d7d/a9cfbaf8fd4a4e0ead34927a58903449/FLAG4b6bd7a2d [2024-11-09 05:57:43,855 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/data/e90f79d7d/a9cfbaf8fd4a4e0ead34927a58903449 [2024-11-09 05:57:43,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 05:57:43,860 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 05:57:43,863 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 05:57:43,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 05:57:43,871 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 05:57:43,872 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:57:43" (1/1) ... [2024-11-09 05:57:43,874 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6995cbff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:43, skipping insertion in model container [2024-11-09 05:57:43,874 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 05:57:43" (1/1) ... [2024-11-09 05:57:44,032 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 05:57:46,841 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_00afabba-3892-4c00-aa6a-057dc35a23cc/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2024-11-09 05:57:46,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:57:47,025 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 05:57:47,180 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outl %0, %w1": : "a" (value), "Nd" (port)); [5924] [2024-11-09 05:57:47,182 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inl %w1, %0": "=a" (value): "Nd" (port)); [5932] [2024-11-09 05:57:47,265 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [7007] [2024-11-09 05:57:47,266 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [7014] [2024-11-09 05:57:47,267 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("rep; nop": : : "memory"); [7040] [2024-11-09 05:57:47,710 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_00afabba-3892-4c00-aa6a-057dc35a23cc/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i[287455,287468] [2024-11-09 05:57:47,720 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 05:57:47,866 INFO L204 MainTranslator]: Completed translation [2024-11-09 05:57:47,867 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:47 WrapperNode [2024-11-09 05:57:47,867 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 05:57:47,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 05:57:47,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 05:57:47,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 05:57:47,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:47" (1/1) ... [2024-11-09 05:57:47,983 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:47" (1/1) ... [2024-11-09 05:57:48,245 INFO L138 Inliner]: procedures = 273, calls = 2182, calls flagged for inlining = 123, calls inlined = 120, statements flattened = 5625 [2024-11-09 05:57:48,246 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 05:57:48,247 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 05:57:48,248 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 05:57:48,248 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 05:57:48,264 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:47" (1/1) ... [2024-11-09 05:57:48,264 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:47" (1/1) ... [2024-11-09 05:57:48,341 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:47" (1/1) ... [2024-11-09 05:57:48,342 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:47" (1/1) ... [2024-11-09 05:57:48,513 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:47" (1/1) ... [2024-11-09 05:57:48,559 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:47" (1/1) ... [2024-11-09 05:57:48,600 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:47" (1/1) ... [2024-11-09 05:57:48,616 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:47" (1/1) ... [2024-11-09 05:57:48,651 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 05:57:48,652 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-09 05:57:48,652 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-09 05:57:48,652 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-09 05:57:48,653 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:47" (1/1) ... [2024-11-09 05:57:48,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-09 05:57:48,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 05:57:48,704 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-09 05:57:48,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-09 05:57:48,750 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_running_reset [2024-11-09 05:57:48,751 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_running_reset [2024-11-09 05:57:48,751 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_open [2024-11-09 05:57:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_open [2024-11-09 05:57:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2024-11-09 05:57:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2024-11-09 05:57:48,752 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2024-11-09 05:57:48,752 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2024-11-09 05:57:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-09 05:57:48,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-09 05:57:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-09 05:57:48,753 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-09 05:57:48,753 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_dec_reset [2024-11-09 05:57:48,754 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_dec_reset [2024-11-09 05:57:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ssi_get_link_status [2024-11-09 05:57:48,754 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ssi_get_link_status [2024-11-09 05:57:48,754 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2024-11-09 05:57:48,756 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2024-11-09 05:57:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2024-11-09 05:57:48,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2024-11-09 05:57:48,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-09 05:57:48,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-09 05:57:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_t1_set_circuit_type [2024-11-09 05:57:48,757 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_t1_set_circuit_type [2024-11-09 05:57:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_gpio_mkinput [2024-11-09 05:57:48,757 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_gpio_mkinput [2024-11-09 05:57:48,757 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-09 05:57:48,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-09 05:57:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2024-11-09 05:57:48,758 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2024-11-09 05:57:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-09 05:57:48,758 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-09 05:57:48,758 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ds3_set_100ft [2024-11-09 05:57:48,758 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ds3_set_100ft [2024-11-09 05:57:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2024-11-09 05:57:48,759 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2024-11-09 05:57:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2024-11-09 05:57:48,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2024-11-09 05:57:48,759 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ds3_set_scram [2024-11-09 05:57:48,759 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ds3_set_scram [2024-11-09 05:57:48,762 INFO L130 BoogieDeclarations]: Found specification of procedure hdlc_change_mtu [2024-11-09 05:57:48,762 INFO L138 BoogieDeclarations]: Found implementation of procedure hdlc_change_mtu [2024-11-09 05:57:48,762 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_close [2024-11-09 05:57:48,762 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_close [2024-11-09 05:57:48,763 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_gpio_mkoutput [2024-11-09 05:57:48,763 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_gpio_mkoutput [2024-11-09 05:57:48,763 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_reset [2024-11-09 05:57:48,763 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_reset [2024-11-09 05:57:48,763 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2024-11-09 05:57:48,764 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2024-11-09 05:57:48,764 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_get_stats [2024-11-09 05:57:48,764 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_get_stats [2024-11-09 05:57:48,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-09 05:57:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_sc [2024-11-09 05:57:48,766 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_sc [2024-11-09 05:57:48,766 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_driver_timeout [2024-11-09 05:57:48,767 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_driver_timeout [2024-11-09 05:57:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_netif [2024-11-09 05:57:48,768 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_netif [2024-11-09 05:57:48,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2024-11-09 05:57:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2024-11-09 05:57:48,769 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2024-11-09 05:57:48,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2024-11-09 05:57:48,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2024-11-09 05:57:48,770 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2024-11-09 05:57:48,771 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2024-11-09 05:57:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_trace [2024-11-09 05:57:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_trace [2024-11-09 05:57:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-09 05:57:48,772 INFO L130 BoogieDeclarations]: Found specification of procedure write_av9110 [2024-11-09 05:57:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure write_av9110 [2024-11-09 05:57:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2024-11-09 05:57:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2024-11-09 05:57:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2024-11-09 05:57:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2024-11-09 05:57:48,773 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2024-11-09 05:57:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2024-11-09 05:57:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2024-11-09 05:57:48,775 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2024-11-09 05:57:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_type [2024-11-09 05:57:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_type [2024-11-09 05:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2024-11-09 05:57:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2024-11-09 05:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_remove_one [2024-11-09 05:57:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_remove_one [2024-11-09 05:57:48,776 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2024-11-09 05:57:48,777 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2024-11-09 05:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_t1_write [2024-11-09 05:57:48,777 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_t1_write [2024-11-09 05:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_close [2024-11-09 05:57:48,777 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_close [2024-11-09 05:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2024-11-09 05:57:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-09 05:57:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_led_off [2024-11-09 05:57:48,778 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_led_off [2024-11-09 05:57:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-09 05:57:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2024-11-09 05:57:48,778 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2024-11-09 05:57:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure dev_to_hdlc [2024-11-09 05:57:48,781 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_to_hdlc [2024-11-09 05:57:48,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2024-11-09 05:57:48,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2024-11-09 05:57:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2024-11-09 05:57:48,782 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2024-11-09 05:57:48,782 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_softreset [2024-11-09 05:57:48,783 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_softreset [2024-11-09 05:57:48,783 INFO L130 BoogieDeclarations]: Found specification of procedure write_av9110_bit [2024-11-09 05:57:48,783 INFO L138 BoogieDeclarations]: Found implementation of procedure write_av9110_bit [2024-11-09 05:57:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-09 05:57:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2024-11-09 05:57:48,784 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2024-11-09 05:57:48,784 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2024-11-09 05:57:48,785 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2024-11-09 05:57:48,785 INFO L130 BoogieDeclarations]: Found specification of procedure dev_alloc_skb [2024-11-09 05:57:48,786 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_alloc_skb [2024-11-09 05:57:48,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2024-11-09 05:57:48,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2024-11-09 05:57:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_mii_writereg [2024-11-09 05:57:48,787 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_mii_writereg [2024-11-09 05:57:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ioctl [2024-11-09 05:57:48,787 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ioctl [2024-11-09 05:57:48,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-09 05:57:48,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-09 05:57:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_attach [2024-11-09 05:57:48,788 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_attach [2024-11-09 05:57:48,788 INFO L130 BoogieDeclarations]: Found specification of procedure virt_to_phys [2024-11-09 05:57:48,789 INFO L138 BoogieDeclarations]: Found implementation of procedure virt_to_phys [2024-11-09 05:57:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_ssi_set_status [2024-11-09 05:57:48,789 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_ssi_set_status [2024-11-09 05:57:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-09 05:57:48,789 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-09 05:57:48,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-09 05:57:48,790 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2024-11-09 05:57:48,790 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2024-11-09 05:57:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 05:57:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2024-11-09 05:57:48,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2024-11-09 05:57:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2024-11-09 05:57:48,791 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_mii_readreg [2024-11-09 05:57:48,792 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_mii_readreg [2024-11-09 05:57:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2024-11-09 05:57:48,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2024-11-09 05:57:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2024-11-09 05:57:48,792 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2024-11-09 05:57:48,792 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 05:57:48,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2024-11-09 05:57:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2024-11-09 05:57:48,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2024-11-09 05:57:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_proto_open [2024-11-09 05:57:48,793 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_proto_open [2024-11-09 05:57:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2024-11-09 05:57:48,793 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2024-11-09 05:57:48,793 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_led_on [2024-11-09 05:57:48,794 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_led_on [2024-11-09 05:57:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure inl [2024-11-09 05:57:48,794 INFO L138 BoogieDeclarations]: Found implementation of procedure inl [2024-11-09 05:57:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-09 05:57:48,794 INFO L130 BoogieDeclarations]: Found specification of procedure lmc_set_protocol [2024-11-09 05:57:48,794 INFO L138 BoogieDeclarations]: Found implementation of procedure lmc_set_protocol [2024-11-09 05:57:48,796 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2024-11-09 05:57:48,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2024-11-09 05:57:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2024-11-09 05:57:48,797 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2024-11-09 05:57:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2024-11-09 05:57:48,797 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2024-11-09 05:57:48,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 05:57:48,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 05:57:48,798 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2024-11-09 05:57:48,799 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2024-11-09 05:57:49,787 INFO L238 CfgBuilder]: Building ICFG [2024-11-09 05:57:49,791 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 05:57:51,453 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-09 05:58:00,889 INFO L? ?]: Removed 1959 outVars from TransFormulas that were not future-live. [2024-11-09 05:58:00,889 INFO L287 CfgBuilder]: Performing block encoding [2024-11-09 05:58:04,350 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 05:58:04,351 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 05:58:04,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:58:04 BoogieIcfgContainer [2024-11-09 05:58:04,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-09 05:58:04,356 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 05:58:04,357 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 05:58:04,361 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 05:58:04,361 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 05:57:43" (1/3) ... [2024-11-09 05:58:04,362 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6813547a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:58:04, skipping insertion in model container [2024-11-09 05:58:04,364 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 05:57:47" (2/3) ... [2024-11-09 05:58:04,364 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6813547a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 05:58:04, skipping insertion in model container [2024-11-09 05:58:04,365 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 05:58:04" (3/3) ... [2024-11-09 05:58:04,366 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--wan--lmc--lmc.ko-entry_point.cil.out.i [2024-11-09 05:58:04,389 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 05:58:04,389 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 05:58:04,612 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 05:58:04,620 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;@b37331e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 05:58:04,620 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 05:58:04,632 INFO L276 IsEmpty]: Start isEmpty. Operand has 1642 states, 940 states have (on average 1.3074468085106383) internal successors, (1229), 988 states have internal predecessors, (1229), 624 states have call successors, (624), 77 states have call predecessors, (624), 76 states have return successors, (618), 603 states have call predecessors, (618), 618 states have call successors, (618) [2024-11-09 05:58:04,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-09 05:58:04,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:58:04,650 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:58:04,651 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:58:04,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:58:04,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1417947312, now seen corresponding path program 1 times [2024-11-09 05:58:04,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:58:04,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309491245] [2024-11-09 05:58:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:58:04,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:58:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:58:10,637 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2024-11-09 05:58:10,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:58:10,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309491245] [2024-11-09 05:58:10,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309491245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:58:10,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:58:10,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 05:58:10,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835251049] [2024-11-09 05:58:10,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:58:10,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 05:58:10,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:58:10,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 05:58:10,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 05:58:10,689 INFO L87 Difference]: Start difference. First operand has 1642 states, 940 states have (on average 1.3074468085106383) internal successors, (1229), 988 states have internal predecessors, (1229), 624 states have call successors, (624), 77 states have call predecessors, (624), 76 states have return successors, (618), 603 states have call predecessors, (618), 618 states have call successors, (618) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-09 05:58:12,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:58:16,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:58:18,901 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:58:22,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:58:22,559 INFO L93 Difference]: Finished difference Result 4811 states and 7313 transitions. [2024-11-09 05:58:22,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 05:58:22,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 72 [2024-11-09 05:58:22,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:58:22,646 INFO L225 Difference]: With dead ends: 4811 [2024-11-09 05:58:22,648 INFO L226 Difference]: Without dead ends: 3167 [2024-11-09 05:58:22,679 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 05:58:22,685 INFO L432 NwaCegarLoop]: 2338 mSDtfsCounter, 2327 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 4 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2327 SdHoareTripleChecker+Valid, 4519 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2024-11-09 05:58:22,686 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2327 Valid, 4519 Invalid, 550 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 543 Invalid, 3 Unknown, 0 Unchecked, 11.4s Time] [2024-11-09 05:58:22,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3167 states. [2024-11-09 05:58:23,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3167 to 3164. [2024-11-09 05:58:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3164 states, 1816 states have (on average 1.2990088105726871) internal successors, (2359), 1894 states have internal predecessors, (2359), 1198 states have call successors, (1198), 150 states have call predecessors, (1198), 149 states have return successors, (1197), 1167 states have call predecessors, (1197), 1197 states have call successors, (1197) [2024-11-09 05:58:23,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 4754 transitions. [2024-11-09 05:58:23,148 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 4754 transitions. Word has length 72 [2024-11-09 05:58:23,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:58:23,149 INFO L471 AbstractCegarLoop]: Abstraction has 3164 states and 4754 transitions. [2024-11-09 05:58:23,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-09 05:58:23,150 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 4754 transitions. [2024-11-09 05:58:23,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-09 05:58:23,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:58:23,163 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:58:23,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 05:58:23,164 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:58:23,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:58:23,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1702980089, now seen corresponding path program 1 times [2024-11-09 05:58:23,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:58:23,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537859424] [2024-11-09 05:58:23,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:58:23,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:58:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:58:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 05:58:28,823 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:58:28,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537859424] [2024-11-09 05:58:28,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537859424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:58:28,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:58:28,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 05:58:28,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440740636] [2024-11-09 05:58:28,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:58:28,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 05:58:28,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:58:28,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 05:58:28,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 05:58:28,829 INFO L87 Difference]: Start difference. First operand 3164 states and 4754 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 05:58:30,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:58:33,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:58:37,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:58:39,948 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:58:46,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:58:46,351 INFO L93 Difference]: Finished difference Result 5314 states and 7974 transitions. [2024-11-09 05:58:46,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 05:58:46,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2024-11-09 05:58:46,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:58:46,433 INFO L225 Difference]: With dead ends: 5314 [2024-11-09 05:58:46,433 INFO L226 Difference]: Without dead ends: 5311 [2024-11-09 05:58:46,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:58:46,444 INFO L432 NwaCegarLoop]: 3098 mSDtfsCounter, 2116 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2116 SdHoareTripleChecker+Valid, 7889 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2024-11-09 05:58:46,445 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2116 Valid, 7889 Invalid, 950 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 946 Invalid, 3 Unknown, 0 Unchecked, 17.1s Time] [2024-11-09 05:58:46,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5311 states. [2024-11-09 05:58:46,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5311 to 5281. [2024-11-09 05:58:46,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5281 states, 3013 states have (on average 1.2900763358778626) internal successors, (3887), 3151 states have internal predecessors, (3887), 2008 states have call successors, (2008), 262 states have call predecessors, (2008), 259 states have return successors, (2031), 1947 states have call predecessors, (2031), 2007 states have call successors, (2031) [2024-11-09 05:58:46,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5281 states to 5281 states and 7926 transitions. [2024-11-09 05:58:46,876 INFO L78 Accepts]: Start accepts. Automaton has 5281 states and 7926 transitions. Word has length 93 [2024-11-09 05:58:46,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:58:46,878 INFO L471 AbstractCegarLoop]: Abstraction has 5281 states and 7926 transitions. [2024-11-09 05:58:46,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-09 05:58:46,879 INFO L276 IsEmpty]: Start isEmpty. Operand 5281 states and 7926 transitions. [2024-11-09 05:58:46,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-09 05:58:46,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:58:46,907 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:58:46,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 05:58:46,910 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:58:46,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:58:46,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1272325702, now seen corresponding path program 1 times [2024-11-09 05:58:46,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:58:46,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003157170] [2024-11-09 05:58:46,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:58:46,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:58:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:58:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 05:58:51,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:58:51,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003157170] [2024-11-09 05:58:51,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003157170] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:58:51,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:58:51,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:58:51,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287266787] [2024-11-09 05:58:51,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:58:51,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:58:51,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:58:51,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:58:51,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:58:51,666 INFO L87 Difference]: Start difference. First operand 5281 states and 7926 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-09 05:58:53,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:58:55,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:58:58,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:59:03,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:59:11,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:59:13,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:59:15,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:59:15,132 INFO L93 Difference]: Finished difference Result 15671 states and 23562 transitions. [2024-11-09 05:59:15,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:59:15,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 143 [2024-11-09 05:59:15,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:59:15,281 INFO L225 Difference]: With dead ends: 15671 [2024-11-09 05:59:15,282 INFO L226 Difference]: Without dead ends: 10416 [2024-11-09 05:59:15,349 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:59:15,350 INFO L432 NwaCegarLoop]: 2189 mSDtfsCounter, 2397 mSDsluCounter, 6540 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2398 SdHoareTripleChecker+Valid, 8729 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.8s IncrementalHoareTripleChecker+Time [2024-11-09 05:59:15,351 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2398 Valid, 8729 Invalid, 1075 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 1066 Invalid, 6 Unknown, 0 Unchecked, 22.8s Time] [2024-11-09 05:59:15,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10416 states. [2024-11-09 05:59:16,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10416 to 10397. [2024-11-09 05:59:16,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10397 states, 5937 states have (on average 1.2922351355903654) internal successors, (7672), 6217 states have internal predecessors, (7672), 3951 states have call successors, (3951), 513 states have call predecessors, (3951), 508 states have return successors, (4022), 3826 states have call predecessors, (4022), 3950 states have call successors, (4022) [2024-11-09 05:59:16,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10397 states to 10397 states and 15645 transitions. [2024-11-09 05:59:16,292 INFO L78 Accepts]: Start accepts. Automaton has 10397 states and 15645 transitions. Word has length 143 [2024-11-09 05:59:16,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:59:16,292 INFO L471 AbstractCegarLoop]: Abstraction has 10397 states and 15645 transitions. [2024-11-09 05:59:16,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-09 05:59:16,293 INFO L276 IsEmpty]: Start isEmpty. Operand 10397 states and 15645 transitions. [2024-11-09 05:59:16,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2024-11-09 05:59:16,310 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:59:16,311 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:16,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 05:59:16,311 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:59:16,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:59:16,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1262797599, now seen corresponding path program 1 times [2024-11-09 05:59:16,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:59:16,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895957143] [2024-11-09 05:59:16,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:59:16,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:59:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:59:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 05:59:21,150 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:59:21,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895957143] [2024-11-09 05:59:21,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895957143] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:59:21,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:59:21,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:59:21,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114629505] [2024-11-09 05:59:21,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:59:21,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:59:21,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:59:21,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:59:21,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:59:21,157 INFO L87 Difference]: Start difference. First operand 10397 states and 15645 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-09 05:59:23,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:59:25,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:59:27,495 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:59:32,427 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:59:34,433 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:59:36,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:59:38,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:59:45,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 05:59:45,855 INFO L93 Difference]: Finished difference Result 25907 states and 39002 transitions. [2024-11-09 05:59:45,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 05:59:45,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 142 [2024-11-09 05:59:45,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 05:59:46,053 INFO L225 Difference]: With dead ends: 25907 [2024-11-09 05:59:46,053 INFO L226 Difference]: Without dead ends: 15536 [2024-11-09 05:59:46,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 05:59:46,173 INFO L432 NwaCegarLoop]: 2360 mSDtfsCounter, 2399 mSDsluCounter, 6887 mSDsCounter, 0 mSdLazyCounter, 1096 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 9247 SdHoareTripleChecker+Invalid, 1105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1096 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2024-11-09 05:59:46,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2400 Valid, 9247 Invalid, 1105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1096 Invalid, 6 Unknown, 0 Unchecked, 23.7s Time] [2024-11-09 05:59:46,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15536 states. [2024-11-09 05:59:47,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15536 to 15503. [2024-11-09 05:59:47,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15503 states, 8853 states have (on average 1.2932339320004518) internal successors, (11449), 9281 states have internal predecessors, (11449), 5892 states have call successors, (5892), 764 states have call predecessors, (5892), 757 states have return successors, (6011), 5697 states have call predecessors, (6011), 5891 states have call successors, (6011) [2024-11-09 05:59:47,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15503 states to 15503 states and 23352 transitions. [2024-11-09 05:59:47,433 INFO L78 Accepts]: Start accepts. Automaton has 15503 states and 23352 transitions. Word has length 142 [2024-11-09 05:59:47,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 05:59:47,433 INFO L471 AbstractCegarLoop]: Abstraction has 15503 states and 23352 transitions. [2024-11-09 05:59:47,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-09 05:59:47,435 INFO L276 IsEmpty]: Start isEmpty. Operand 15503 states and 23352 transitions. [2024-11-09 05:59:47,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-09 05:59:47,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 05:59:47,484 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:47,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 05:59:47,484 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 05:59:47,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 05:59:47,485 INFO L85 PathProgramCache]: Analyzing trace with hash 988184196, now seen corresponding path program 1 times [2024-11-09 05:59:47,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 05:59:47,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684500638] [2024-11-09 05:59:47,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 05:59:47,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 05:59:51,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 05:59:52,036 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 05:59:52,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 05:59:52,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684500638] [2024-11-09 05:59:52,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684500638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 05:59:52,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 05:59:52,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 05:59:52,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508029402] [2024-11-09 05:59:52,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 05:59:52,039 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 05:59:52,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 05:59:52,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 05:59:52,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 05:59:52,040 INFO L87 Difference]: Start difference. First operand 15503 states and 23352 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-09 05:59:54,096 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 [] [2024-11-09 05:59:56,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 05:59:58,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:00:03,300 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:00:05,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:00:12,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:00:14,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:00:16,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:16,979 INFO L93 Difference]: Finished difference Result 28995 states and 43560 transitions. [2024-11-09 06:00:16,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:00:16,979 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 144 [2024-11-09 06:00:16,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:17,138 INFO L225 Difference]: With dead ends: 28995 [2024-11-09 06:00:17,139 INFO L226 Difference]: Without dead ends: 15536 [2024-11-09 06:00:17,254 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:00:17,255 INFO L432 NwaCegarLoop]: 2189 mSDtfsCounter, 2396 mSDsluCounter, 6540 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2397 SdHoareTripleChecker+Valid, 8729 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:17,257 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2397 Valid, 8729 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1065 Invalid, 7 Unknown, 0 Unchecked, 24.0s Time] [2024-11-09 06:00:17,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15536 states. [2024-11-09 06:00:18,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15536 to 15511. [2024-11-09 06:00:18,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15511 states, 8861 states have (on average 1.2929691908362488) internal successors, (11457), 9287 states have internal predecessors, (11457), 5890 states have call successors, (5890), 766 states have call predecessors, (5890), 759 states have return successors, (6009), 5697 states have call predecessors, (6009), 5889 states have call successors, (6009) [2024-11-09 06:00:18,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15511 states to 15511 states and 23356 transitions. [2024-11-09 06:00:18,469 INFO L78 Accepts]: Start accepts. Automaton has 15511 states and 23356 transitions. Word has length 144 [2024-11-09 06:00:18,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:18,469 INFO L471 AbstractCegarLoop]: Abstraction has 15511 states and 23356 transitions. [2024-11-09 06:00:18,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-09 06:00:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 15511 states and 23356 transitions. [2024-11-09 06:00:18,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-09 06:00:18,503 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:18,504 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:18,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 06:00:18,504 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:00:18,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:18,505 INFO L85 PathProgramCache]: Analyzing trace with hash -793820407, now seen corresponding path program 1 times [2024-11-09 06:00:18,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:00:18,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005059165] [2024-11-09 06:00:18,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:18,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:00:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 06:00:23,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:00:23,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005059165] [2024-11-09 06:00:23,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005059165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:00:23,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 06:00:23,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 06:00:23,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956935963] [2024-11-09 06:00:23,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:00:23,809 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 06:00:23,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:00:23,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 06:00:23,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 06:00:23,810 INFO L87 Difference]: Start difference. First operand 15511 states and 23356 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-09 06:00:25,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:00:28,005 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:00:30,196 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:00:35,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:00:42,738 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 [] [2024-11-09 06:00:44,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:00:44,358 INFO L93 Difference]: Finished difference Result 28407 states and 42658 transitions. [2024-11-09 06:00:44,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-09 06:00:44,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 145 [2024-11-09 06:00:44,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:00:44,554 INFO L225 Difference]: With dead ends: 28407 [2024-11-09 06:00:44,554 INFO L226 Difference]: Without dead ends: 14938 [2024-11-09 06:00:44,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-09 06:00:44,830 INFO L432 NwaCegarLoop]: 2189 mSDtfsCounter, 2395 mSDsluCounter, 6540 mSDsCounter, 0 mSdLazyCounter, 1066 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2396 SdHoareTripleChecker+Valid, 8729 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1066 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2024-11-09 06:00:44,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2396 Valid, 8729 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1066 Invalid, 5 Unknown, 0 Unchecked, 19.6s Time] [2024-11-09 06:00:44,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14938 states. [2024-11-09 06:00:45,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14938 to 14915. [2024-11-09 06:00:45,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14915 states, 8473 states have (on average 1.2898619143160628) internal successors, (10929), 8881 states have internal predecessors, (10929), 5702 states have call successors, (5702), 744 states have call predecessors, (5702), 739 states have return successors, (5817), 5515 states have call predecessors, (5817), 5701 states have call successors, (5817) [2024-11-09 06:00:45,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14915 states to 14915 states and 22448 transitions. [2024-11-09 06:00:46,010 INFO L78 Accepts]: Start accepts. Automaton has 14915 states and 22448 transitions. Word has length 145 [2024-11-09 06:00:46,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:00:46,011 INFO L471 AbstractCegarLoop]: Abstraction has 14915 states and 22448 transitions. [2024-11-09 06:00:46,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 3 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-09 06:00:46,011 INFO L276 IsEmpty]: Start isEmpty. Operand 14915 states and 22448 transitions. [2024-11-09 06:00:46,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-09 06:00:46,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:00:46,049 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:00:46,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 06:00:46,050 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:00:46,050 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:00:46,050 INFO L85 PathProgramCache]: Analyzing trace with hash 95254390, now seen corresponding path program 1 times [2024-11-09 06:00:46,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:00:46,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641330036] [2024-11-09 06:00:46,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:46,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:00:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:51,063 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-09 06:00:51,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:00:51,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641330036] [2024-11-09 06:00:51,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641330036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:00:51,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069459183] [2024-11-09 06:00:51,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:00:51,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:00:51,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:00:51,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:00:51,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-09 06:00:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:00:56,055 INFO L255 TraceCheckSpWp]: Trace formula consists of 3033 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:00:56,069 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:00:56,920 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 06:00:56,921 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:00:56,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069459183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:00:56,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:00:56,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2024-11-09 06:00:56,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062226730] [2024-11-09 06:00:56,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:00:56,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:00:56,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:00:56,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:00:56,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-09 06:00:56,925 INFO L87 Difference]: Start difference. First operand 14915 states and 22448 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-09 06:00:58,977 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 [] [2024-11-09 06:01:01,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:01:03,306 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:01:05,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:01:07,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:01:15,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:01:18,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:01:20,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:01:22,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:01:25,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:01:27,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:01:38,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:01:38,250 INFO L93 Difference]: Finished difference Result 35017 states and 52706 transitions. [2024-11-09 06:01:38,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:01:38,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 155 [2024-11-09 06:01:38,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:01:38,578 INFO L225 Difference]: With dead ends: 35017 [2024-11-09 06:01:38,578 INFO L226 Difference]: Without dead ends: 24626 [2024-11-09 06:01:38,715 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2024-11-09 06:01:38,716 INFO L432 NwaCegarLoop]: 2559 mSDtfsCounter, 2424 mSDsluCounter, 12413 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2428 SdHoareTripleChecker+Valid, 14972 SdHoareTripleChecker+Invalid, 1821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.5s IncrementalHoareTripleChecker+Time [2024-11-09 06:01:38,716 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2428 Valid, 14972 Invalid, 1821 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1808 Invalid, 11 Unknown, 0 Unchecked, 39.5s Time] [2024-11-09 06:01:38,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24626 states. [2024-11-09 06:01:40,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24626 to 24553. [2024-11-09 06:01:40,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24553 states, 13937 states have (on average 1.2903063787041689) internal successors, (17983), 14623 states have internal predecessors, (17983), 9396 states have call successors, (9396), 1222 states have call predecessors, (9396), 1219 states have return successors, (9613), 9079 states have call predecessors, (9613), 9395 states have call successors, (9613) [2024-11-09 06:01:40,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24553 states to 24553 states and 36992 transitions. [2024-11-09 06:01:40,652 INFO L78 Accepts]: Start accepts. Automaton has 24553 states and 36992 transitions. Word has length 155 [2024-11-09 06:01:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:01:40,653 INFO L471 AbstractCegarLoop]: Abstraction has 24553 states and 36992 transitions. [2024-11-09 06:01:40,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 5 states have internal predecessors, (76), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-09 06:01:40,654 INFO L276 IsEmpty]: Start isEmpty. Operand 24553 states and 36992 transitions. [2024-11-09 06:01:40,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-09 06:01:40,711 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:01:40,711 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:01:40,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-09 06:01:40,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:01:40,912 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:01:40,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:01:40,912 INFO L85 PathProgramCache]: Analyzing trace with hash 284021622, now seen corresponding path program 1 times [2024-11-09 06:01:40,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:01:40,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224215737] [2024-11-09 06:01:40,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:01:40,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:01:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:01:46,809 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 06:01:46,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:01:46,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224215737] [2024-11-09 06:01:46,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224215737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:01:46,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806196908] [2024-11-09 06:01:46,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:01:46,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:01:46,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:01:46,813 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:01:46,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-09 06:01:51,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:01:51,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 3035 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:01:51,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:01:52,468 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 06:01:52,469 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:01:52,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806196908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:01:52,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:01:52,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-09 06:01:52,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002920733] [2024-11-09 06:01:52,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:01:52,471 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:01:52,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:01:52,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:01:52,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:01:52,472 INFO L87 Difference]: Start difference. First operand 24553 states and 36992 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-09 06:01:54,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:01:56,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:01:58,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:02:01,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:02:03,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:02:10,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:02:12,954 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:02:15,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:02:17,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:02:19,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:02:22,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:02:25,713 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:02:34,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:02:34,839 INFO L93 Difference]: Finished difference Result 54315 states and 81814 transitions. [2024-11-09 06:02:34,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:02:34,840 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 156 [2024-11-09 06:02:34,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:02:35,207 INFO L225 Difference]: With dead ends: 54315 [2024-11-09 06:02:35,207 INFO L226 Difference]: Without dead ends: 34286 [2024-11-09 06:02:35,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-09 06:02:35,441 INFO L432 NwaCegarLoop]: 2434 mSDtfsCounter, 2424 mSDsluCounter, 11901 mSDsCounter, 0 mSdLazyCounter, 1774 mSolverCounterSat, 2 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2428 SdHoareTripleChecker+Valid, 14335 SdHoareTripleChecker+Invalid, 1787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1774 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40.1s IncrementalHoareTripleChecker+Time [2024-11-09 06:02:35,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2428 Valid, 14335 Invalid, 1787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1774 Invalid, 11 Unknown, 0 Unchecked, 40.1s Time] [2024-11-09 06:02:35,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34286 states. [2024-11-09 06:02:37,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34286 to 34201. [2024-11-09 06:02:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34201 states, 19407 states have (on average 1.290410676560004) internal successors, (25043), 20377 states have internal predecessors, (25043), 13090 states have call successors, (13090), 1700 states have call predecessors, (13090), 1703 states have return successors, (13415), 12641 states have call predecessors, (13415), 13089 states have call successors, (13415) [2024-11-09 06:02:37,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34201 states to 34201 states and 51548 transitions. [2024-11-09 06:02:37,847 INFO L78 Accepts]: Start accepts. Automaton has 34201 states and 51548 transitions. Word has length 156 [2024-11-09 06:02:37,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:02:37,849 INFO L471 AbstractCegarLoop]: Abstraction has 34201 states and 51548 transitions. [2024-11-09 06:02:37,850 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-09 06:02:37,851 INFO L276 IsEmpty]: Start isEmpty. Operand 34201 states and 51548 transitions. [2024-11-09 06:02:37,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-09 06:02:37,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:02:37,907 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:02:37,940 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-09 06:02:38,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:02:38,108 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:02:38,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:02:38,110 INFO L85 PathProgramCache]: Analyzing trace with hash -604280515, now seen corresponding path program 1 times [2024-11-09 06:02:38,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:02:38,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65063387] [2024-11-09 06:02:38,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:02:38,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:02:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:02:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 06:02:43,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:02:43,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65063387] [2024-11-09 06:02:43,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65063387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:02:43,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069906102] [2024-11-09 06:02:43,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:02:43,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:02:43,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:02:43,512 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:02:43,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-09 06:02:48,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:02:48,259 INFO L255 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:02:48,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:02:49,144 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 06:02:49,144 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:02:49,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069906102] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:02:49,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:02:49,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-09 06:02:49,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768160393] [2024-11-09 06:02:49,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:02:49,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:02:49,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:02:49,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:02:49,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:02:49,148 INFO L87 Difference]: Start difference. First operand 34201 states and 51548 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-09 06:02:51,200 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:02:53,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:02:55,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:02:57,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:02:59,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:07,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:09,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:11,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:13,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:15,894 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:17,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:19,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:21,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:24,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:28,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:39,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:03:40,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:03:40,973 INFO L93 Difference]: Finished difference Result 73607 states and 110918 transitions. [2024-11-09 06:03:40,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:03:40,974 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 157 [2024-11-09 06:03:40,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:03:41,445 INFO L225 Difference]: With dead ends: 73607 [2024-11-09 06:03:41,446 INFO L226 Difference]: Without dead ends: 43930 [2024-11-09 06:03:41,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-09 06:03:41,743 INFO L432 NwaCegarLoop]: 2478 mSDtfsCounter, 2424 mSDsluCounter, 12077 mSDsCounter, 0 mSdLazyCounter, 1788 mSolverCounterSat, 2 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2428 SdHoareTripleChecker+Valid, 14555 SdHoareTripleChecker+Invalid, 1805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1788 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.0s IncrementalHoareTripleChecker+Time [2024-11-09 06:03:41,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2428 Valid, 14555 Invalid, 1805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1788 Invalid, 15 Unknown, 0 Unchecked, 49.0s Time] [2024-11-09 06:03:41,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43930 states. [2024-11-09 06:03:43,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43930 to 34203. [2024-11-09 06:03:43,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34203 states, 19409 states have (on average 1.290380751197898) internal successors, (25045), 20377 states have internal predecessors, (25045), 13090 states have call successors, (13090), 1700 states have call predecessors, (13090), 1703 states have return successors, (13415), 12643 states have call predecessors, (13415), 13089 states have call successors, (13415) [2024-11-09 06:03:44,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34203 states to 34203 states and 51550 transitions. [2024-11-09 06:03:44,365 INFO L78 Accepts]: Start accepts. Automaton has 34203 states and 51550 transitions. Word has length 157 [2024-11-09 06:03:44,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:03:44,366 INFO L471 AbstractCegarLoop]: Abstraction has 34203 states and 51550 transitions. [2024-11-09 06:03:44,366 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-09 06:03:44,366 INFO L276 IsEmpty]: Start isEmpty. Operand 34203 states and 51550 transitions. [2024-11-09 06:03:44,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-09 06:03:44,425 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:03:44,425 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:03:44,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-09 06:03:44,630 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:03:44,630 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:03:44,631 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:03:44,631 INFO L85 PathProgramCache]: Analyzing trace with hash -521994723, now seen corresponding path program 1 times [2024-11-09 06:03:44,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:03:44,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719957331] [2024-11-09 06:03:44,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:03:44,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:03:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:03:49,810 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 06:03:49,810 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:03:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719957331] [2024-11-09 06:03:49,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719957331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:03:49,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745044871] [2024-11-09 06:03:49,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:03:49,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:03:49,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:03:49,812 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:03:49,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-09 06:03:55,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:03:55,576 INFO L255 TraceCheckSpWp]: Trace formula consists of 3039 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-09 06:03:55,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:03:56,523 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-09 06:03:56,524 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-09 06:03:56,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745044871] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 06:03:56,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-09 06:03:56,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2024-11-09 06:03:56,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136724736] [2024-11-09 06:03:56,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 06:03:56,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 06:03:56,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-09 06:03:56,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 06:03:56,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-11-09 06:03:56,528 INFO L87 Difference]: Start difference. First operand 34203 states and 51550 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-09 06:03:58,574 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:04:00,795 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:04:02,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:04:05,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:04:07,284 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:04:15,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:04:17,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:04:19,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:04:22,369 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-09 06:04:33,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 06:04:33,941 INFO L93 Difference]: Finished difference Result 73613 states and 110924 transitions. [2024-11-09 06:04:33,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-09 06:04:33,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 158 [2024-11-09 06:04:33,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 06:04:34,797 INFO L225 Difference]: With dead ends: 73613 [2024-11-09 06:04:34,797 INFO L226 Difference]: Without dead ends: 43934 [2024-11-09 06:04:35,003 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=59, Invalid=321, Unknown=0, NotChecked=0, Total=380 [2024-11-09 06:04:35,004 INFO L432 NwaCegarLoop]: 2481 mSDtfsCounter, 2424 mSDsluCounter, 12089 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 2 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2428 SdHoareTripleChecker+Valid, 14570 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.9s IncrementalHoareTripleChecker+Time [2024-11-09 06:04:35,004 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2428 Valid, 14570 Invalid, 1807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1796 Invalid, 9 Unknown, 0 Unchecked, 33.9s Time] [2024-11-09 06:04:35,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43934 states. [2024-11-09 06:04:37,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43934 to 34205. [2024-11-09 06:04:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34205 states, 19411 states have (on average 1.2903508320024728) internal successors, (25047), 20377 states have internal predecessors, (25047), 13090 states have call successors, (13090), 1700 states have call predecessors, (13090), 1703 states have return successors, (13415), 12645 states have call predecessors, (13415), 13089 states have call successors, (13415) [2024-11-09 06:04:37,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34205 states to 34205 states and 51552 transitions. [2024-11-09 06:04:37,596 INFO L78 Accepts]: Start accepts. Automaton has 34205 states and 51552 transitions. Word has length 158 [2024-11-09 06:04:37,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 06:04:37,596 INFO L471 AbstractCegarLoop]: Abstraction has 34205 states and 51552 transitions. [2024-11-09 06:04:37,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (25), 3 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-09 06:04:37,597 INFO L276 IsEmpty]: Start isEmpty. Operand 34205 states and 51552 transitions. [2024-11-09 06:04:37,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-09 06:04:37,650 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 06:04:37,650 INFO L215 NwaCegarLoop]: trace histogram [5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:04:37,689 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-09 06:04:37,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-09 06:04:37,851 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 06:04:37,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 06:04:37,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1815454129, now seen corresponding path program 1 times [2024-11-09 06:04:37,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-09 06:04:37,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246094834] [2024-11-09 06:04:37,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:37,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 06:04:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:43,128 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-09 06:04:43,128 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-09 06:04:43,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246094834] [2024-11-09 06:04:43,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246094834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-09 06:04:43,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619234024] [2024-11-09 06:04:43,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 06:04:43,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-09 06:04:43,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 [2024-11-09 06:04:43,132 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-09 06:04:43,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_00afabba-3892-4c00-aa6a-057dc35a23cc/bin/utaipan-verify-YMUCfTKeje/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-09 06:04:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 06:04:48,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 3106 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-09 06:04:48,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-09 06:04:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-09 06:04:50,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-09 06:04:54,155 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2024-11-09 06:04:54,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [619234024] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-09 06:04:54,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [475212554] [2024-11-09 06:04:54,202 INFO L159 IcfgInterpreter]: Started Sifa with 110 locations of interest [2024-11-09 06:04:54,203 INFO L166 IcfgInterpreter]: Building call graph [2024-11-09 06:04:54,208 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2024-11-09 06:04:54,215 INFO L176 IcfgInterpreter]: Starting interpretation [2024-11-09 06:04:54,215 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs