./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 709e000bdea0bf1517f1edc69f1d5199e729e3cf1effc12ce3f796e9f1102469 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:08:08,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:08:08,667 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-19 05:08:08,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:08:08,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:08:08,716 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:08:08,716 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:08:08,717 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:08:08,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:08:08,723 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:08:08,723 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:08:08,724 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:08:08,725 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:08:08,726 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:08:08,727 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:08:08,727 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:08:08,728 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:08:08,728 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:08:08,728 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:08:08,729 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:08:08,730 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:08:08,731 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:08:08,732 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:08:08,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:08:08,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:08:08,733 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:08:08,734 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:08:08,734 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:08:08,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:08:08,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:08:08,736 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:08:08,737 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:08:08,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:08:08,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:08:08,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:08:08,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:08:08,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:08:08,738 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:08:08,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:08:08,739 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:08:08,739 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:08:08,739 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:08:08,740 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_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 709e000bdea0bf1517f1edc69f1d5199e729e3cf1effc12ce3f796e9f1102469 [2023-11-19 05:08:09,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:08:09,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:08:09,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:08:09,177 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:08:09,178 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:08:09,180 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i [2023-11-19 05:08:12,220 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:08:12,868 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:08:12,870 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i [2023-11-19 05:08:12,922 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/data/a77d6a82a/0286328197964db696334f5326fc5765/FLAGc239cf8d6 [2023-11-19 05:08:12,943 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/data/a77d6a82a/0286328197964db696334f5326fc5765 [2023-11-19 05:08:12,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:08:12,951 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:08:12,955 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:08:12,955 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:08:12,961 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:08:12,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:08:12" (1/1) ... [2023-11-19 05:08:12,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@757fed61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:12, skipping insertion in model container [2023-11-19 05:08:12,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:08:12" (1/1) ... [2023-11-19 05:08:13,227 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:08:15,400 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i[185756,185769] [2023-11-19 05:08:15,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:08:15,549 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:08:15,645 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; decl %0; sete %1": "+m" (v->counter), "=qm" (c): : "memory"); [2235-2236] [2023-11-19 05:08:15,647 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; xaddb %b0, %1\n": "+q" (__ret), "+m" (v->counter): : "memory", "cc"); [2246-2247] [2023-11-19 05:08:15,648 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; xaddw %w0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [2250-2251] [2023-11-19 05:08:15,650 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; xaddl %0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [2254-2255] [2023-11-19 05:08:15,650 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; xaddq %q0, %1\n": "+r" (__ret), "+m" (v->counter): : "memory", "cc"); [2258-2259] [2023-11-19 05:08:15,726 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bsrl %1,%0": "=r" (r): "rm" (x), "0" (-1)); [3367] [2023-11-19 05:08:15,838 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" (buf + i): "ebx"); [4766] [2023-11-19 05:08:15,839 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" (buf + i): "ebx"); [4769] [2023-11-19 05:08:15,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" (buf + i): "ebx"); [4772] [2023-11-19 05:08:15,841 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" (buf + i): "ebx"); [4775] [2023-11-19 05:08:15,842 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" (buf + i): "ebx"); [4778] [2023-11-19 05:08:15,973 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i[185756,185769] [2023-11-19 05:08:16,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:08:16,231 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:08:16,239 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:08:16,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:16 WrapperNode [2023-11-19 05:08:16,240 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:08:16,242 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:08:16,242 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:08:16,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:08:16,251 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:16" (1/1) ... [2023-11-19 05:08:16,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:16" (1/1) ... [2023-11-19 05:08:16,632 INFO L138 Inliner]: procedures = 286, calls = 2243, calls flagged for inlining = 112, calls inlined = 107, statements flattened = 6016 [2023-11-19 05:08:16,633 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:08:16,634 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:08:16,634 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:08:16,634 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:08:16,646 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:16" (1/1) ... [2023-11-19 05:08:16,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:16" (1/1) ... [2023-11-19 05:08:16,678 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:16" (1/1) ... [2023-11-19 05:08:16,679 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:16" (1/1) ... [2023-11-19 05:08:16,911 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:16" (1/1) ... [2023-11-19 05:08:16,938 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:16" (1/1) ... [2023-11-19 05:08:16,962 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:16" (1/1) ... [2023-11-19 05:08:16,992 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:16" (1/1) ... [2023-11-19 05:08:17,037 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:08:17,038 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:08:17,038 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:08:17,039 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:08:17,040 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:16" (1/1) ... [2023-11-19 05:08:17,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:08:17,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:17,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:08:17,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:08:17,112 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_perm_bits [2023-11-19 05:08:17,113 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_perm_bits [2023-11-19 05:08:17,113 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_intx_disable [2023-11-19 05:08:17,113 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_intx_disable [2023-11-19 05:08:17,113 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_find_cap_start [2023-11-19 05:08:17,113 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_find_cap_start [2023-11-19 05:08:17,114 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_intx_unmask_handler [2023-11-19 05:08:17,115 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_intx_unmask_handler [2023-11-19 05:08:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:08:17,116 INFO L130 BoogieDeclarations]: Found specification of procedure pci_intx [2023-11-19 05:08:17,116 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_intx [2023-11-19 05:08:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:08:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure free_perm_bits [2023-11-19 05:08:17,117 INFO L138 BoogieDeclarations]: Found implementation of procedure free_perm_bits [2023-11-19 05:08:17,117 INFO L130 BoogieDeclarations]: Found specification of procedure p_setb [2023-11-19 05:08:17,118 INFO L138 BoogieDeclarations]: Found implementation of procedure p_setb [2023-11-19 05:08:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_ioctl [2023-11-19 05:08:17,118 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_ioctl [2023-11-19 05:08:17,118 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2023-11-19 05:08:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2023-11-19 05:08:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure virqfd_disable [2023-11-19 05:08:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure virqfd_disable [2023-11-19 05:08:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:08:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:08:17,119 INFO L130 BoogieDeclarations]: Found specification of procedure pci_user_read_config_word [2023-11-19 05:08:17,119 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_user_read_config_word [2023-11-19 05:08:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2023-11-19 05:08:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2023-11-19 05:08:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure p_setd [2023-11-19 05:08:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure p_setd [2023-11-19 05:08:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2023-11-19 05:08:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2023-11-19 05:08:17,120 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-19 05:08:17,120 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-19 05:08:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure p_setw [2023-11-19 05:08:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure p_setw [2023-11-19 05:08:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:08:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:08:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:08:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:08:17,121 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2023-11-19 05:08:17,121 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2023-11-19 05:08:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 05:08:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 05:08:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2023-11-19 05:08:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2023-11-19 05:08:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure pci_reset_function [2023-11-19 05:08:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_reset_function [2023-11-19 05:08:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2023-11-19 05:08:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2023-11-19 05:08:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure pcibios_err_to_errno [2023-11-19 05:08:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure pcibios_err_to_errno [2023-11-19 05:08:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-11-19 05:08:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-11-19 05:08:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 05:08:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 05:08:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_probe [2023-11-19 05:08:17,186 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_probe [2023-11-19 05:08:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:08:17,186 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:08:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_intx_unmask [2023-11-19 05:08:17,186 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_intx_unmask [2023-11-19 05:08:17,186 INFO L130 BoogieDeclarations]: Found specification of procedure virqfd_deactivate [2023-11-19 05:08:17,186 INFO L138 BoogieDeclarations]: Found implementation of procedure virqfd_deactivate [2023-11-19 05:08:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:08:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-19 05:08:17,187 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-19 05:08:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure kasprintf [2023-11-19 05:08:17,187 INFO L138 BoogieDeclarations]: Found implementation of procedure kasprintf [2023-11-19 05:08:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-11-19 05:08:17,187 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-11-19 05:08:17,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:08:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq_nosync [2023-11-19 05:08:17,188 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq_nosync [2023-11-19 05:08:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2023-11-19 05:08:17,188 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2023-11-19 05:08:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-19 05:08:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_intx_mask [2023-11-19 05:08:17,188 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_intx_mask [2023-11-19 05:08:17,188 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-19 05:08:17,189 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-19 05:08:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fill_vconfig_bytes [2023-11-19 05:08:17,189 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fill_vconfig_bytes [2023-11-19 05:08:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:08:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_intx_set_signal [2023-11-19 05:08:17,189 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_intx_set_signal [2023-11-19 05:08:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:08:17,189 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-19 05:08:17,190 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-19 05:08:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2023-11-19 05:08:17,190 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2023-11-19 05:08:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:08:17,190 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:08:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_user_config_write [2023-11-19 05:08:17,190 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_user_config_write [2023-11-19 05:08:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 05:08:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 05:08:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 05:08:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 05:08:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2023-11-19 05:08:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2023-11-19 05:08:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-19 05:08:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-19 05:08:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-11-19 05:08:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-11-19 05:08:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure pci_find_capability [2023-11-19 05:08:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_find_capability [2023-11-19 05:08:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:08:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-19 05:08:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-19 05:08:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2023-11-19 05:08:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2023-11-19 05:08:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_rom [2023-11-19 05:08:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_rom [2023-11-19 05:08:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure iommu_group_put [2023-11-19 05:08:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure iommu_group_put [2023-11-19 05:08:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:08:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure pci_user_write_config_word [2023-11-19 05:08:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_user_write_config_word [2023-11-19 05:08:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure pci_request_selected_regions [2023-11-19 05:08:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_request_selected_regions [2023-11-19 05:08:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:08:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:08:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:08:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fdget [2023-11-19 05:08:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fdget [2023-11-19 05:08:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_mem_readwrite [2023-11-19 05:08:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_mem_readwrite [2023-11-19 05:08:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:08:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:08:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2023-11-19 05:08:17,195 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2023-11-19 05:08:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_uninit_perm_bits [2023-11-19 05:08:17,195 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_uninit_perm_bits [2023-11-19 05:08:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:08:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-19 05:08:17,195 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-19 05:08:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-19 05:08:17,195 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-19 05:08:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2023-11-19 05:08:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2023-11-19 05:08:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-19 05:08:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-19 05:08:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:08:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:08:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_default_config_write [2023-11-19 05:08:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_default_config_write [2023-11-19 05:08:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_send_intx_eventfd [2023-11-19 05:08:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_send_intx_eventfd [2023-11-19 05:08:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:08:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_msi_set_block [2023-11-19 05:08:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_msi_set_block [2023-11-19 05:08:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_user_config_read [2023-11-19 05:08:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_user_config_read [2023-11-19 05:08:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_default_config_read [2023-11-19 05:08:17,198 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_default_config_read [2023-11-19 05:08:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-19 05:08:17,198 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-19 05:08:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_virqfd_exit [2023-11-19 05:08:17,198 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_virqfd_exit [2023-11-19 05:08:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:08:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure pci_user_write_config_dword [2023-11-19 05:08:17,198 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_user_write_config_dword [2023-11-19 05:08:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2023-11-19 05:08:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2023-11-19 05:08:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_rom [2023-11-19 05:08:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_rom [2023-11-19 05:08:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:08:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2023-11-19 05:08:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2023-11-19 05:08:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2023-11-19 05:08:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2023-11-19 05:08:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_get_irq_count [2023-11-19 05:08:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_get_irq_count [2023-11-19 05:08:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-19 05:08:17,203 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-19 05:08:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_set_irqs_ioctl [2023-11-19 05:08:17,203 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_set_irqs_ioctl [2023-11-19 05:08:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2023-11-19 05:08:17,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2023-11-19 05:08:17,203 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_config_do_rw [2023-11-19 05:08:17,204 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_config_do_rw [2023-11-19 05:08:17,204 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_msi_disable [2023-11-19 05:08:17,204 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_msi_disable [2023-11-19 05:08:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2023-11-19 05:08:17,205 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2023-11-19 05:08:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_mmap [2023-11-19 05:08:17,205 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_mmap [2023-11-19 05:08:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-11-19 05:08:17,205 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-11-19 05:08:17,205 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-19 05:08:17,205 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-19 05:08:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_msi_set_vector_signal [2023-11-19 05:08:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_msi_set_vector_signal [2023-11-19 05:08:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2023-11-19 05:08:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2023-11-19 05:08:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 05:08:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-19 05:08:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-11-19 05:08:17,206 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-11-19 05:08:17,206 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_io_readwrite [2023-11-19 05:08:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_io_readwrite [2023-11-19 05:08:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:08:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure pci_load_and_free_saved_state [2023-11-19 05:08:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_load_and_free_saved_state [2023-11-19 05:08:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_config_readwrite [2023-11-19 05:08:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_config_readwrite [2023-11-19 05:08:17,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:08:17,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:08:17,208 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-19 05:08:17,208 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-19 05:08:18,015 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:08:18,024 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:08:18,380 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-19 05:08:18,979 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765: assume 0 == #t~mem205#1 % 18446744073709551616;#t~nondet206#1 := 0; [2023-11-19 05:08:18,979 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765: assume !(0 == #t~mem205#1 % 18446744073709551616); [2023-11-19 05:08:18,979 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-2: assume 512 == #t~mem205#1 % 18446744073709551616;#t~nondet206#1 := #t~mem205#1; [2023-11-19 05:08:18,979 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-2: assume !(512 == #t~mem205#1 % 18446744073709551616);assume #t~nondet206#1 % 18446744073709551616 <= #t~mem205#1 % 18446744073709551616;assume #t~nondet206#1 % 18446744073709551616 <= 512; [2023-11-19 05:08:18,980 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-5: assume #t~short208#1;call #t~mem207#1 := read~int(~#info___0~0#1.base, 16 + ~#info___0~0#1.offset, 8);#t~short208#1 := #t~mem207#1 % 18446744073709551616 > 4095; [2023-11-19 05:08:18,980 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-5: assume !#t~short208#1; [2023-11-19 05:08:18,980 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-4: #t~short208#1 := 0 != #t~nondet206#1 % 18446744073709551616; [2023-11-19 05:08:18,980 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-7: assume #t~short208#1;havoc #t~mem204#1;havoc #t~mem205#1;havoc #t~nondet206#1;havoc #t~mem207#1;havoc #t~short208#1;call #t~mem209#1 := read~int(~#info___0~0#1.base, 4 + ~#info___0~0#1.offset, 4); [2023-11-19 05:08:18,981 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-7: assume !#t~short208#1;havoc #t~mem204#1;havoc #t~mem205#1;havoc #t~nondet206#1;havoc #t~mem207#1;havoc #t~short208#1; [2023-11-19 05:08:18,981 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2766: assume 0 == #t~mem209#1 % 4294967296 || 4 == #t~mem209#1 % 4294967296;#t~nondet210#1 := 4; [2023-11-19 05:08:18,981 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2766: assume !(0 == #t~mem209#1 % 4294967296 || 4 == #t~mem209#1 % 4294967296); [2023-11-19 05:08:18,982 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2766-2: assume false;#t~nondet210#1 := #t~mem209#1; [2023-11-19 05:08:18,982 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2766-2: assume !false;assume #t~nondet210#1 % 4294967296 >= #t~mem209#1 % 4294967296;assume #t~nondet210#1 % 4294967296 >= 4;assume #t~nondet210#1 % 4294967296 <= 4 + #t~mem209#1 % 4294967296; [2023-11-19 05:08:18,982 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2766-4: call write~int(#t~nondet210#1, ~#info___0~0#1.base, 4 + ~#info___0~0#1.offset, 4);havoc #t~mem209#1;havoc #t~nondet210#1; [2023-11-19 05:08:18,982 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2754: assume #t~short198#1;havoc #t~mem192#1;havoc #t~mem193#1;havoc #t~mem194#1;havoc #t~mem196#1;havoc #t~mem195#1;havoc #t~mem197#1;havoc #t~short198#1;call #t~mem199#1 := read~int(~#info___0~0#1.base, 8 + ~#info___0~0#1.offset, 4);call #t~mem201#1 := read~int(~pdev~2#1.base, 8 + (1242 + ~pdev~2#1.offset + 56 * (if #t~mem199#1 % 4294967296 % 18446744073709551616 <= 9223372036854775807 then #t~mem199#1 % 4294967296 % 18446744073709551616 else #t~mem199#1 % 4294967296 % 18446744073709551616 - 18446744073709551616)), 8);call #t~mem200#1 := read~int(~#info___0~0#1.base, 8 + ~#info___0~0#1.offset, 4);call #t~mem202#1 := read~int(~pdev~2#1.base, 1242 + ~pdev~2#1.offset + 56 * (if #t~mem200#1 % 4294967296 % 18446744073709551616 <= 9223372036854775807 then #t~mem200#1 % 4294967296 % 18446744073709551616 else #t~mem200#1 % 4294967296 % 18446744073709551616 - 18446744073709551616), 8);call write~int(1 + (#t~mem201#1 - #t~mem202#1), ~#info___0~0#1.base, 16 + ~#info___0~0#1.offset, 8);havoc #t~mem199#1;havoc #t~mem201#1;havoc #t~mem200#1;havoc #t~mem202#1; [2023-11-19 05:08:18,983 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2754: assume !#t~short198#1;havoc #t~mem192#1;havoc #t~mem193#1;havoc #t~mem194#1;havoc #t~mem196#1;havoc #t~mem195#1;havoc #t~mem197#1;havoc #t~short198#1;call write~int(0, ~#info___0~0#1.base, 16 + ~#info___0~0#1.offset, 8); [2023-11-19 05:08:18,983 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2754-2: call #t~mem203#1 := read~int(~#info___0~0#1.base, 16 + ~#info___0~0#1.offset, 8); [2023-11-19 05:08:18,983 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume #t~short198#1; [2023-11-19 05:08:18,990 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !#t~short198#1;call #t~mem194#1 := read~int(~#info___0~0#1.base, 8 + ~#info___0~0#1.offset, 4);call #t~mem196#1 := read~int(~pdev~2#1.base, 8 + (1242 + ~pdev~2#1.offset + 56 * (if #t~mem194#1 % 4294967296 % 18446744073709551616 <= 9223372036854775807 then #t~mem194#1 % 4294967296 % 18446744073709551616 else #t~mem194#1 % 4294967296 % 18446744073709551616 - 18446744073709551616)), 8);call #t~mem195#1 := read~int(~#info___0~0#1.base, 8 + ~#info___0~0#1.offset, 4);call #t~mem197#1 := read~int(~pdev~2#1.base, 1242 + ~pdev~2#1.offset + 56 * (if #t~mem195#1 % 4294967296 % 18446744073709551616 <= 9223372036854775807 then #t~mem195#1 % 4294967296 % 18446744073709551616 else #t~mem195#1 % 4294967296 % 18446744073709551616 - 18446744073709551616), 8);#t~short198#1 := #t~mem196#1 % 18446744073709551616 != #t~mem197#1 % 18446744073709551616; [2023-11-19 05:08:18,990 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2759: assume 0 == #t~mem203#1 % 18446744073709551616;havoc #t~mem203#1;call write~int(0, ~#info___0~0#1.base, 4 + ~#info___0~0#1.offset, 4); [2023-11-19 05:08:18,991 INFO L767 $ProcedureCfgBuilder]: dead code at ProgramPoint L2759: assume !(0 == #t~mem203#1 % 18446744073709551616);havoc #t~mem203#1;call write~int(3, ~#info___0~0#1.base, 4 + ~#info___0~0#1.offset, 4);call #t~mem204#1 := read~int(~#info___0~0#1.base, 8 + ~#info___0~0#1.offset, 4);call #t~mem205#1 := read~int(~pdev~2#1.base, 24 + (1242 + ~pdev~2#1.offset + 56 * (if #t~mem204#1 % 4294967296 % 18446744073709551616 <= 9223372036854775807 then #t~mem204#1 % 4294967296 % 18446744073709551616 else #t~mem204#1 % 4294967296 % 18446744073709551616 - 18446744073709551616)), 8); [2023-11-19 05:08:23,731 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:08:28,210 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:08:28,211 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 05:08:28,232 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:28 BoogieIcfgContainer [2023-11-19 05:08:28,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:08:28,239 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:08:28,239 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:08:28,243 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:08:28,244 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:08:12" (1/3) ... [2023-11-19 05:08:28,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5068306b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:28, skipping insertion in model container [2023-11-19 05:08:28,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:08:16" (2/3) ... [2023-11-19 05:08:28,247 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5068306b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:08:28, skipping insertion in model container [2023-11-19 05:08:28,248 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:08:28" (3/3) ... [2023-11-19 05:08:28,249 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i [2023-11-19 05:08:28,278 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:08:28,278 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 05:08:28,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:08:28,437 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@70ec10e3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:08:28,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 05:08:28,454 INFO L276 IsEmpty]: Start isEmpty. Operand has 1492 states, 960 states have (on average 1.4020833333333333) internal successors, (1346), 993 states have internal predecessors, (1346), 433 states have call successors, (433), 97 states have call predecessors, (433), 97 states have return successors, (433), 428 states have call predecessors, (433), 433 states have call successors, (433) [2023-11-19 05:08:28,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 05:08:28,529 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:28,530 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:28,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:28,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:28,542 INFO L85 PathProgramCache]: Analyzing trace with hash -363785416, now seen corresponding path program 1 times [2023-11-19 05:08:28,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:28,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422683808] [2023-11-19 05:08:28,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:28,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:28,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 05:08:29,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:29,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422683808] [2023-11-19 05:08:29,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422683808] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:29,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:29,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:29,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445627520] [2023-11-19 05:08:29,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:29,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:29,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:29,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:29,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:29,492 INFO L87 Difference]: Start difference. First operand has 1492 states, 960 states have (on average 1.4020833333333333) internal successors, (1346), 993 states have internal predecessors, (1346), 433 states have call successors, (433), 97 states have call predecessors, (433), 97 states have return successors, (433), 428 states have call predecessors, (433), 433 states have call successors, (433) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:08:33,139 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 [] [2023-11-19 05:08:33,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:33,691 INFO L93 Difference]: Finished difference Result 3176 states and 4713 transitions. [2023-11-19 05:08:33,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:33,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 42 [2023-11-19 05:08:33,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:33,742 INFO L225 Difference]: With dead ends: 3176 [2023-11-19 05:08:33,742 INFO L226 Difference]: Without dead ends: 1681 [2023-11-19 05:08:33,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:33,768 INFO L413 NwaCegarLoop]: 1958 mSDtfsCounter, 278 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 3894 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:33,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 3894 Invalid, 517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 515 Invalid, 1 Unknown, 0 Unchecked, 3.8s Time] [2023-11-19 05:08:33,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2023-11-19 05:08:34,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1669. [2023-11-19 05:08:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1669 states, 1051 states have (on average 1.3939105613701237) internal successors, (1465), 1088 states have internal predecessors, (1465), 506 states have call successors, (506), 112 states have call predecessors, (506), 111 states have return successors, (501), 494 states have call predecessors, (501), 501 states have call successors, (501) [2023-11-19 05:08:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2472 transitions. [2023-11-19 05:08:34,039 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2472 transitions. Word has length 42 [2023-11-19 05:08:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:34,040 INFO L495 AbstractCegarLoop]: Abstraction has 1669 states and 2472 transitions. [2023-11-19 05:08:34,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 05:08:34,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2472 transitions. [2023-11-19 05:08:34,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-19 05:08:34,050 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:34,051 INFO L195 NwaCegarLoop]: trace histogram [14, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:34,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:08:34,052 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:34,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:34,053 INFO L85 PathProgramCache]: Analyzing trace with hash -712640755, now seen corresponding path program 1 times [2023-11-19 05:08:34,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:34,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172967302] [2023-11-19 05:08:34,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:34,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:34,663 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-11-19 05:08:34,663 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:34,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172967302] [2023-11-19 05:08:34,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172967302] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:34,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:08:34,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:08:34,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314825937] [2023-11-19 05:08:34,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:34,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:34,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:34,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:34,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:34,670 INFO L87 Difference]: Start difference. First operand 1669 states and 2472 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 05:08:37,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:39,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:39,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:39,793 INFO L93 Difference]: Finished difference Result 3461 states and 5100 transitions. [2023-11-19 05:08:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:39,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 95 [2023-11-19 05:08:39,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:39,811 INFO L225 Difference]: With dead ends: 3461 [2023-11-19 05:08:39,812 INFO L226 Difference]: Without dead ends: 1793 [2023-11-19 05:08:39,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:08:39,823 INFO L413 NwaCegarLoop]: 1969 mSDtfsCounter, 257 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 257 SdHoareTripleChecker+Valid, 3788 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:39,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [257 Valid, 3788 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 491 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2023-11-19 05:08:39,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2023-11-19 05:08:39,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1793. [2023-11-19 05:08:39,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1117 states have (on average 1.3849597135183527) internal successors, (1547), 1156 states have internal predecessors, (1547), 542 states have call successors, (542), 134 states have call predecessors, (542), 133 states have return successors, (537), 530 states have call predecessors, (537), 537 states have call successors, (537) [2023-11-19 05:08:39,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2626 transitions. [2023-11-19 05:08:39,943 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2626 transitions. Word has length 95 [2023-11-19 05:08:39,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:39,944 INFO L495 AbstractCegarLoop]: Abstraction has 1793 states and 2626 transitions. [2023-11-19 05:08:39,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-19 05:08:39,944 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2626 transitions. [2023-11-19 05:08:39,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-19 05:08:39,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:39,950 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:39,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:08:39,950 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:39,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:39,951 INFO L85 PathProgramCache]: Analyzing trace with hash -270943667, now seen corresponding path program 1 times [2023-11-19 05:08:39,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:39,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222022382] [2023-11-19 05:08:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:39,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:40,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2023-11-19 05:08:40,955 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:40,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222022382] [2023-11-19 05:08:40,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222022382] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:40,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708845983] [2023-11-19 05:08:40,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:40,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:40,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:40,968 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:40,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:08:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:42,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 3334 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:08:42,574 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:43,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2023-11-19 05:08:43,177 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:43,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708845983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:43,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:08:43,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-19 05:08:43,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102967925] [2023-11-19 05:08:43,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:43,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:43,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:43,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:43,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:08:43,182 INFO L87 Difference]: Start difference. First operand 1793 states and 2626 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 05:08:45,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:45,200 INFO L93 Difference]: Finished difference Result 2260 states and 3277 transitions. [2023-11-19 05:08:45,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:45,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 241 [2023-11-19 05:08:45,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:45,227 INFO L225 Difference]: With dead ends: 2260 [2023-11-19 05:08:45,227 INFO L226 Difference]: Without dead ends: 2256 [2023-11-19 05:08:45,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 241 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:08:45,232 INFO L413 NwaCegarLoop]: 1952 mSDtfsCounter, 2121 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2121 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:45,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 2529 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-19 05:08:45,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2023-11-19 05:08:45,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2254. [2023-11-19 05:08:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 1407 states have (on average 1.3773987206823028) internal successors, (1938), 1459 states have internal predecessors, (1938), 668 states have call successors, (668), 179 states have call predecessors, (668), 178 states have return successors, (665), 655 states have call predecessors, (665), 665 states have call successors, (665) [2023-11-19 05:08:45,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 3271 transitions. [2023-11-19 05:08:45,419 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 3271 transitions. Word has length 241 [2023-11-19 05:08:45,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:45,423 INFO L495 AbstractCegarLoop]: Abstraction has 2254 states and 3271 transitions. [2023-11-19 05:08:45,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 05:08:45,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 3271 transitions. [2023-11-19 05:08:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-19 05:08:45,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:45,434 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:45,482 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:45,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:45,656 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:45,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:45,657 INFO L85 PathProgramCache]: Analyzing trace with hash 189942844, now seen corresponding path program 1 times [2023-11-19 05:08:45,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:45,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582790008] [2023-11-19 05:08:45,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:45,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:45,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:46,714 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2023-11-19 05:08:46,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:46,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582790008] [2023-11-19 05:08:46,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582790008] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:46,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891429588] [2023-11-19 05:08:46,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:46,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:46,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:46,718 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:46,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:08:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:48,521 INFO L262 TraceCheckSpWp]: Trace formula consists of 3336 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:08:48,557 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:08:49,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2023-11-19 05:08:49,167 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:08:49,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891429588] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:08:49,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:08:49,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-19 05:08:49,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917242306] [2023-11-19 05:08:49,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:08:49,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:08:49,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:08:49,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:08:49,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:08:49,172 INFO L87 Difference]: Start difference. First operand 2254 states and 3271 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 05:08:51,619 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 05:08:51,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:08:51,974 INFO L93 Difference]: Finished difference Result 2256 states and 3272 transitions. [2023-11-19 05:08:51,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:08:51,975 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 242 [2023-11-19 05:08:51,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:08:51,998 INFO L225 Difference]: With dead ends: 2256 [2023-11-19 05:08:51,998 INFO L226 Difference]: Without dead ends: 2253 [2023-11-19 05:08:52,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 05:08:52,002 INFO L413 NwaCegarLoop]: 1951 mSDtfsCounter, 2130 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-19 05:08:52,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 1951 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-19 05:08:52,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2023-11-19 05:08:52,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2253. [2023-11-19 05:08:52,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2253 states, 1407 states have (on average 1.3766879886282872) internal successors, (1937), 1458 states have internal predecessors, (1937), 667 states have call successors, (667), 179 states have call predecessors, (667), 178 states have return successors, (665), 655 states have call predecessors, (665), 665 states have call successors, (665) [2023-11-19 05:08:52,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 3269 transitions. [2023-11-19 05:08:52,205 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 3269 transitions. Word has length 242 [2023-11-19 05:08:52,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:08:52,207 INFO L495 AbstractCegarLoop]: Abstraction has 2253 states and 3269 transitions. [2023-11-19 05:08:52,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 2 states have internal predecessors, (48), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2023-11-19 05:08:52,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 3269 transitions. [2023-11-19 05:08:52,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-11-19 05:08:52,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:08:52,214 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:08:52,254 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 05:08:52,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:52,428 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 05:08:52,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:08:52,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1592527664, now seen corresponding path program 1 times [2023-11-19 05:08:52,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:08:52,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760933986] [2023-11-19 05:08:52,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:52,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:08:52,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:53,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2023-11-19 05:08:53,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:08:53,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760933986] [2023-11-19 05:08:53,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760933986] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:08:53,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699484606] [2023-11-19 05:08:53,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:08:53,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:08:53,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:08:53,401 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:08:53,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_329d770b-1308-4108-8827-0c7595eaafb3/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 05:08:55,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:08:55,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 3338 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:08:55,126 INFO L285 TraceCheckSpWp]: Computing forward predicates...