./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 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.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_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 709e000bdea0bf1517f1edc69f1d5199e729e3cf1effc12ce3f796e9f1102469 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:03:06,378 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:03:06,500 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-21 21:03:06,508 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:03:06,509 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:03:06,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:03:06,553 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:03:06,554 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:03:06,555 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:03:06,562 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:03:06,563 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:03:06,564 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:03:06,565 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:03:06,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:03:06,568 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:03:06,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:03:06,569 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:03:06,569 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:03:06,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:03:06,570 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:03:06,570 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:03:06,571 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:03:06,572 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:03:06,572 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:03:06,573 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:03:06,574 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:03:06,574 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:03:06,575 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:03:06,575 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:03:06,576 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:03:06,577 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:03:06,577 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:03:06,577 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:03:06,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:03:06,578 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:03:06,578 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:03:06,579 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:03:06,579 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:03:06,579 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:03:06,579 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 709e000bdea0bf1517f1edc69f1d5199e729e3cf1effc12ce3f796e9f1102469 [2023-11-21 21:03:06,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:03:06,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:03:06,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:03:06,886 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:03:06,887 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:03:06,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i [2023-11-21 21:03:10,063 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:03:10,675 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:03:10,676 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i [2023-11-21 21:03:10,729 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/data/067206d47/c61fec0140dd426fb9c4744e51a64927/FLAGe7e66d9c4 [2023-11-21 21:03:10,747 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/data/067206d47/c61fec0140dd426fb9c4744e51a64927 [2023-11-21 21:03:10,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:03:10,756 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:03:10,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:03:10,759 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:03:10,764 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:03:10,768 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:10" (1/1) ... [2023-11-21 21:03:10,769 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66b4bfc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:10, skipping insertion in model container [2023-11-21 21:03:10,770 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:10" (1/1) ... [2023-11-21 21:03:10,947 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:03:12,829 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_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i[185756,185769] [2023-11-21 21:03:12,917 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:03:12,979 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:03:13,074 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] [2023-11-21 21:03:13,077 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] [2023-11-21 21:03:13,078 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] [2023-11-21 21:03:13,080 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] [2023-11-21 21:03:13,080 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] [2023-11-21 21:03:13,161 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bsrl %1,%0": "=r" (r): "rm" (x), "0" (-1)); [3367] [2023-11-21 21:03:13,259 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] [2023-11-21 21:03:13,260 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] [2023-11-21 21:03:13,260 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] [2023-11-21 21:03:13,261 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] [2023-11-21 21:03:13,261 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] [2023-11-21 21:03:13,369 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_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i[185756,185769] [2023-11-21 21:03:13,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:03:13,617 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 21:03:13,625 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:03:13,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:13 WrapperNode [2023-11-21 21:03:13,625 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:03:13,627 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:03:13,627 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:03:13,627 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:03:13,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:13" (1/1) ... [2023-11-21 21:03:13,750 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:13" (1/1) ... [2023-11-21 21:03:13,964 INFO L138 Inliner]: procedures = 286, calls = 2243, calls flagged for inlining = 112, calls inlined = 107, statements flattened = 6016 [2023-11-21 21:03:13,965 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:03:13,966 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:03:13,966 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:03:13,966 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:03:13,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:13" (1/1) ... [2023-11-21 21:03:13,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:13" (1/1) ... [2023-11-21 21:03:14,024 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:13" (1/1) ... [2023-11-21 21:03:15,023 WARN L106 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Procedure #Ultimate.C_memset is not part of the Ultimate memory model but has specification other that is not a ModifiesSpecification [2023-11-21 21:03:15,023 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:13" (1/1) ... [2023-11-21 21:03:15,024 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:13" (1/1) ... [2023-11-21 21:03:15,179 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:13" (1/1) ... [2023-11-21 21:03:15,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:13" (1/1) ... [2023-11-21 21:03:15,257 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:13" (1/1) ... [2023-11-21 21:03:15,273 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:13" (1/1) ... [2023-11-21 21:03:15,323 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:03:15,324 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:03:15,324 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:03:15,325 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:03:15,325 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:13" (1/1) ... [2023-11-21 21:03:15,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:03:15,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:15,353 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:03:15,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:03:15,396 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_perm_bits [2023-11-21 21:03:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_perm_bits [2023-11-21 21:03:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_intx_disable [2023-11-21 21:03:15,397 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_intx_disable [2023-11-21 21:03:15,397 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_find_cap_start [2023-11-21 21:03:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_find_cap_start [2023-11-21 21:03:15,398 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_intx_unmask_handler [2023-11-21 21:03:15,398 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_intx_unmask_handler [2023-11-21 21:03:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-21 21:03:15,399 INFO L130 BoogieDeclarations]: Found specification of procedure pci_intx [2023-11-21 21:03:15,399 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_intx [2023-11-21 21:03:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-21 21:03:15,400 INFO L130 BoogieDeclarations]: Found specification of procedure free_perm_bits [2023-11-21 21:03:15,400 INFO L138 BoogieDeclarations]: Found implementation of procedure free_perm_bits [2023-11-21 21:03:15,401 INFO L130 BoogieDeclarations]: Found specification of procedure p_setb [2023-11-21 21:03:15,401 INFO L138 BoogieDeclarations]: Found implementation of procedure p_setb [2023-11-21 21:03:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_ioctl [2023-11-21 21:03:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_ioctl [2023-11-21 21:03:15,402 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2023-11-21 21:03:15,402 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2023-11-21 21:03:15,404 INFO L130 BoogieDeclarations]: Found specification of procedure virqfd_disable [2023-11-21 21:03:15,404 INFO L138 BoogieDeclarations]: Found implementation of procedure virqfd_disable [2023-11-21 21:03:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 21:03:15,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 21:03:15,405 INFO L130 BoogieDeclarations]: Found specification of procedure pci_user_read_config_word [2023-11-21 21:03:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_user_read_config_word [2023-11-21 21:03:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_byte [2023-11-21 21:03:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_byte [2023-11-21 21:03:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure p_setd [2023-11-21 21:03:15,406 INFO L138 BoogieDeclarations]: Found implementation of procedure p_setd [2023-11-21 21:03:15,406 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_word [2023-11-21 21:03:15,407 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_word [2023-11-21 21:03:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2023-11-21 21:03:15,407 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2023-11-21 21:03:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure p_setw [2023-11-21 21:03:15,407 INFO L138 BoogieDeclarations]: Found implementation of procedure p_setw [2023-11-21 21:03:15,407 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-21 21:03:15,408 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-21 21:03:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-21 21:03:15,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-21 21:03:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2023-11-21 21:03:15,408 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2023-11-21 21:03:15,408 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 21:03:15,408 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 21:03:15,409 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2023-11-21 21:03:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2023-11-21 21:03:15,409 INFO L130 BoogieDeclarations]: Found specification of procedure pci_reset_function [2023-11-21 21:03:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_reset_function [2023-11-21 21:03:15,409 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2023-11-21 21:03:15,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2023-11-21 21:03:15,410 INFO L130 BoogieDeclarations]: Found specification of procedure pcibios_err_to_errno [2023-11-21 21:03:15,410 INFO L138 BoogieDeclarations]: Found implementation of procedure pcibios_err_to_errno [2023-11-21 21:03:15,410 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2023-11-21 21:03:15,411 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2023-11-21 21:03:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-21 21:03:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-21 21:03:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_probe [2023-11-21 21:03:15,412 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_probe [2023-11-21 21:03:15,412 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-21 21:03:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-21 21:03:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_intx_unmask [2023-11-21 21:03:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_intx_unmask [2023-11-21 21:03:15,413 INFO L130 BoogieDeclarations]: Found specification of procedure virqfd_deactivate [2023-11-21 21:03:15,413 INFO L138 BoogieDeclarations]: Found implementation of procedure virqfd_deactivate [2023-11-21 21:03:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 21:03:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2023-11-21 21:03:15,414 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2023-11-21 21:03:15,414 INFO L130 BoogieDeclarations]: Found specification of procedure kasprintf [2023-11-21 21:03:15,414 INFO L138 BoogieDeclarations]: Found implementation of procedure kasprintf [2023-11-21 21:03:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure module_put [2023-11-21 21:03:15,415 INFO L138 BoogieDeclarations]: Found implementation of procedure module_put [2023-11-21 21:03:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 21:03:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure disable_irq_nosync [2023-11-21 21:03:15,415 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_irq_nosync [2023-11-21 21:03:15,415 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2023-11-21 21:03:15,415 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2023-11-21 21:03:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-21 21:03:15,416 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_intx_mask [2023-11-21 21:03:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_intx_mask [2023-11-21 21:03:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2023-11-21 21:03:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2023-11-21 21:03:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_fill_vconfig_bytes [2023-11-21 21:03:15,417 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_fill_vconfig_bytes [2023-11-21 21:03:15,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 21:03:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_intx_set_signal [2023-11-21 21:03:15,418 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_intx_set_signal [2023-11-21 21:03:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 21:03:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-21 21:03:15,418 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-21 21:03:15,418 INFO L130 BoogieDeclarations]: Found specification of procedure pci_write_config_word [2023-11-21 21:03:15,418 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_write_config_word [2023-11-21 21:03:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-21 21:03:15,419 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-21 21:03:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_user_config_write [2023-11-21 21:03:15,419 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_user_config_write [2023-11-21 21:03:15,419 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-21 21:03:15,419 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-21 21:03:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-21 21:03:15,420 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-21 21:03:15,420 INFO L130 BoogieDeclarations]: Found specification of procedure fput [2023-11-21 21:03:15,420 INFO L138 BoogieDeclarations]: Found implementation of procedure fput [2023-11-21 21:03:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2023-11-21 21:03:15,421 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2023-11-21 21:03:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2023-11-21 21:03:15,421 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2023-11-21 21:03:15,421 INFO L130 BoogieDeclarations]: Found specification of procedure pci_find_capability [2023-11-21 21:03:15,422 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_find_capability [2023-11-21 21:03:15,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-21 21:03:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-21 21:03:15,423 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-21 21:03:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure pci_save_state [2023-11-21 21:03:15,423 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_save_state [2023-11-21 21:03:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_rom [2023-11-21 21:03:15,423 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_rom [2023-11-21 21:03:15,423 INFO L130 BoogieDeclarations]: Found specification of procedure iommu_group_put [2023-11-21 21:03:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure iommu_group_put [2023-11-21 21:03:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-21 21:03:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure pci_user_write_config_word [2023-11-21 21:03:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_user_write_config_word [2023-11-21 21:03:15,424 INFO L130 BoogieDeclarations]: Found specification of procedure pci_request_selected_regions [2023-11-21 21:03:15,424 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_request_selected_regions [2023-11-21 21:03:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 21:03:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-21 21:03:15,425 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-21 21:03:15,425 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_fdget [2023-11-21 21:03:15,425 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_fdget [2023-11-21 21:03:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_mem_readwrite [2023-11-21 21:03:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_mem_readwrite [2023-11-21 21:03:15,426 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-21 21:03:15,426 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-21 21:03:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iomap [2023-11-21 21:03:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iomap [2023-11-21 21:03:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_uninit_perm_bits [2023-11-21 21:03:15,427 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_uninit_perm_bits [2023-11-21 21:03:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 21:03:15,427 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2023-11-21 21:03:15,429 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2023-11-21 21:03:15,429 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-21 21:03:15,430 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-21 21:03:15,432 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_ctx_put [2023-11-21 21:03:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_ctx_put [2023-11-21 21:03:15,433 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2023-11-21 21:03:15,433 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2023-11-21 21:03:15,434 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-21 21:03:15,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-21 21:03:15,435 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_default_config_write [2023-11-21 21:03:15,435 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_default_config_write [2023-11-21 21:03:15,436 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_send_intx_eventfd [2023-11-21 21:03:15,441 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_send_intx_eventfd [2023-11-21 21:03:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 21:03:15,442 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_msi_set_block [2023-11-21 21:03:15,442 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_msi_set_block [2023-11-21 21:03:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_user_config_read [2023-11-21 21:03:15,443 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_user_config_read [2023-11-21 21:03:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_default_config_read [2023-11-21 21:03:15,443 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_default_config_read [2023-11-21 21:03:15,443 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-21 21:03:15,444 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-21 21:03:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_virqfd_exit [2023-11-21 21:03:15,444 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_virqfd_exit [2023-11-21 21:03:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:03:15,444 INFO L130 BoogieDeclarations]: Found specification of procedure pci_user_write_config_dword [2023-11-21 21:03:15,445 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_user_write_config_dword [2023-11-21 21:03:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure eventfd_signal [2023-11-21 21:03:15,445 INFO L138 BoogieDeclarations]: Found implementation of procedure eventfd_signal [2023-11-21 21:03:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_rom [2023-11-21 21:03:15,445 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_rom [2023-11-21 21:03:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 21:03:15,445 INFO L130 BoogieDeclarations]: Found specification of procedure pci_read_config_dword [2023-11-21 21:03:15,446 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_read_config_dword [2023-11-21 21:03:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2023-11-21 21:03:15,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2023-11-21 21:03:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_get_irq_count [2023-11-21 21:03:15,446 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_get_irq_count [2023-11-21 21:03:15,446 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2023-11-21 21:03:15,446 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2023-11-21 21:03:15,447 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_set_irqs_ioctl [2023-11-21 21:03:15,447 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_set_irqs_ioctl [2023-11-21 21:03:15,447 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2023-11-21 21:03:15,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2023-11-21 21:03:15,447 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_config_do_rw [2023-11-21 21:03:15,447 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_config_do_rw [2023-11-21 21:03:15,447 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_msi_disable [2023-11-21 21:03:15,448 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_msi_disable [2023-11-21 21:03:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2023-11-21 21:03:15,448 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2023-11-21 21:03:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_mmap [2023-11-21 21:03:15,448 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_mmap [2023-11-21 21:03:15,448 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2023-11-21 21:03:15,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2023-11-21 21:03:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-21 21:03:15,449 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-21 21:03:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_msi_set_vector_signal [2023-11-21 21:03:15,449 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_msi_set_vector_signal [2023-11-21 21:03:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_selected_regions [2023-11-21 21:03:15,449 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_selected_regions [2023-11-21 21:03:15,449 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 21:03:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-21 21:03:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2023-11-21 21:03:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2023-11-21 21:03:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_io_readwrite [2023-11-21 21:03:15,450 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_io_readwrite [2023-11-21 21:03:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 21:03:15,450 INFO L130 BoogieDeclarations]: Found specification of procedure pci_load_and_free_saved_state [2023-11-21 21:03:15,451 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_load_and_free_saved_state [2023-11-21 21:03:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure vfio_pci_config_readwrite [2023-11-21 21:03:15,451 INFO L138 BoogieDeclarations]: Found implementation of procedure vfio_pci_config_readwrite [2023-11-21 21:03:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:03:15,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:03:15,451 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-21 21:03:15,451 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-21 21:03:16,259 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:03:16,265 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:03:16,565 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 21:03:17,118 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765: assume 0 == #t~mem205#1 % 18446744073709551616;#t~nondet206#1 := 0; [2023-11-21 21:03:17,118 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765: assume !(0 == #t~mem205#1 % 18446744073709551616); [2023-11-21 21:03:17,118 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-2: assume 512 == #t~mem205#1 % 18446744073709551616;#t~nondet206#1 := #t~mem205#1; [2023-11-21 21:03:17,118 INFO L774 $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; [2023-11-21 21:03:17,118 INFO L774 $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; [2023-11-21 21:03:17,119 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-5: assume !#t~short208#1; [2023-11-21 21:03:17,119 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint L2765-4: #t~short208#1 := 0 != #t~nondet206#1 % 18446744073709551616; [2023-11-21 21:03:17,119 INFO L774 $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); [2023-11-21 21:03:17,119 INFO L774 $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; [2023-11-21 21:03:17,119 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint L2766: assume 0 == #t~mem209#1 % 4294967296 || 4 == #t~mem209#1 % 4294967296;#t~nondet210#1 := 4; [2023-11-21 21:03:17,119 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint L2766: assume !(0 == #t~mem209#1 % 4294967296 || 4 == #t~mem209#1 % 4294967296); [2023-11-21 21:03:17,119 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint L2766-2: assume false;#t~nondet210#1 := #t~mem209#1; [2023-11-21 21:03:17,120 INFO L774 $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; [2023-11-21 21:03:17,120 INFO L774 $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; [2023-11-21 21:03:17,120 INFO L774 $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; [2023-11-21 21:03:17,120 INFO L774 $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); [2023-11-21 21:03:17,120 INFO L774 $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); [2023-11-21 21:03:17,120 INFO L774 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume #t~short198#1; [2023-11-21 21:03:17,126 INFO L774 $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; [2023-11-21 21:03:17,126 INFO L774 $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); [2023-11-21 21:03:17,127 INFO L774 $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); [2023-11-21 21:03:21,786 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:03:27,366 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:03:27,367 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 21:03:27,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:27 BoogieIcfgContainer [2023-11-21 21:03:27,370 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:03:27,373 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:03:27,373 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:03:27,377 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:03:27,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:03:10" (1/3) ... [2023-11-21 21:03:27,379 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e02bffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:27, skipping insertion in model container [2023-11-21 21:03:27,379 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:13" (2/3) ... [2023-11-21 21:03:27,380 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e02bffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:27, skipping insertion in model container [2023-11-21 21:03:27,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:27" (3/3) ... [2023-11-21 21:03:27,381 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--vfio--pci--vfio-pci.ko-main.cil.out.i [2023-11-21 21:03:27,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:03:27,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 21:03:27,507 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:03:27,516 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=PETRI_NET, 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;@3321399, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:03:27,516 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 21:03:27,529 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) [2023-11-21 21:03:27,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-21 21:03:27,573 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:27,574 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] [2023-11-21 21:03:27,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:27,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:27,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1242811722, now seen corresponding path program 1 times [2023-11-21 21:03:27,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:27,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522526063] [2023-11-21 21:03:27,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:27,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:28,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 21:03:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:28,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:28,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:28,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 21:03:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:28,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:03:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:28,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:28,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:28,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522526063] [2023-11-21 21:03:28,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522526063] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:28,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:28,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 21:03:28,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865767284] [2023-11-21 21:03:28,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:28,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:28,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:28,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:28,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:28,406 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) [2023-11-21 21:03:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:31,080 INFO L93 Difference]: Finished difference Result 3176 states and 4713 transitions. [2023-11-21 21:03:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:03:31,085 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 [2023-11-21 21:03:31,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:31,133 INFO L225 Difference]: With dead ends: 3176 [2023-11-21 21:03:31,133 INFO L226 Difference]: Without dead ends: 1681 [2023-11-21 21:03:31,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 21:03:31,163 INFO L413 NwaCegarLoop]: 1958 mSDtfsCounter, 278 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 3894 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:31,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 3894 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-21 21:03:31,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1681 states. [2023-11-21 21:03:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1681 to 1669. [2023-11-21 21:03:31,325 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) [2023-11-21 21:03:31,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1669 states to 1669 states and 2472 transitions. [2023-11-21 21:03:31,349 INFO L78 Accepts]: Start accepts. Automaton has 1669 states and 2472 transitions. Word has length 42 [2023-11-21 21:03:31,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:31,350 INFO L495 AbstractCegarLoop]: Abstraction has 1669 states and 2472 transitions. [2023-11-21 21:03:31,350 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) [2023-11-21 21:03:31,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1669 states and 2472 transitions. [2023-11-21 21:03:31,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-21 21:03:31,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:31,356 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] [2023-11-21 21:03:31,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:03:31,357 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:31,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:31,357 INFO L85 PathProgramCache]: Analyzing trace with hash 748380796, now seen corresponding path program 1 times [2023-11-21 21:03:31,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:31,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280031026] [2023-11-21 21:03:31,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:31,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 21:03:31,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-21 21:03:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:03:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:31,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-21 21:03:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 21:03:31,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-21 21:03:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:31,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-21 21:03:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:31,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:31,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-21 21:03:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:32,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:32,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:32,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-21 21:03:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:32,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:32,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:32,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2023-11-21 21:03:32,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:32,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280031026] [2023-11-21 21:03:32,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280031026] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:32,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:32,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:03:32,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878794391] [2023-11-21 21:03:32,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:32,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:03:32,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:32,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:03:32,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:03:32,060 INFO L87 Difference]: Start difference. First operand 1669 states and 2472 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-21 21:03:38,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-21 21:03:40,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:40,044 INFO L93 Difference]: Finished difference Result 3566 states and 5288 transitions. [2023-11-21 21:03:40,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 21:03:40,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 95 [2023-11-21 21:03:40,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:40,073 INFO L225 Difference]: With dead ends: 3566 [2023-11-21 21:03:40,074 INFO L226 Difference]: Without dead ends: 1898 [2023-11-21 21:03:40,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:03:40,085 INFO L413 NwaCegarLoop]: 1744 mSDtfsCounter, 873 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 1809 mSolverCounterSat, 1006 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 4026 SdHoareTripleChecker+Invalid, 2816 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1006 IncrementalHoareTripleChecker+Valid, 1809 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:40,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [965 Valid, 4026 Invalid, 2816 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1006 Valid, 1809 Invalid, 1 Unknown, 0 Unchecked, 7.6s Time] [2023-11-21 21:03:40,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1898 states. [2023-11-21 21:03:40,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1898 to 1793. [2023-11-21 21:03:40,188 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) [2023-11-21 21:03:40,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2626 transitions. [2023-11-21 21:03:40,206 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2626 transitions. Word has length 95 [2023-11-21 21:03:40,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:40,207 INFO L495 AbstractCegarLoop]: Abstraction has 1793 states and 2626 transitions. [2023-11-21 21:03:40,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 3 states have internal predecessors, (17), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-21 21:03:40,207 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2626 transitions. [2023-11-21 21:03:40,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-21 21:03:40,213 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:40,213 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] [2023-11-21 21:03:40,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 21:03:40,214 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:40,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:40,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1446921606, now seen corresponding path program 1 times [2023-11-21 21:03:40,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:40,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533944318] [2023-11-21 21:03:40,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:40,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:40,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:03:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 21:03:41,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:41,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-21 21:03:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:41,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-21 21:03:41,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:41,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-21 21:03:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-21 21:03:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:41,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-11-21 21:03:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:42,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:42,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:42,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:42,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:42,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:42,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:42,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:42,135 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2023-11-21 21:03:42,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:42,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533944318] [2023-11-21 21:03:42,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533944318] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:03:42,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049708324] [2023-11-21 21:03:42,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:42,137 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:42,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:42,140 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:42,177 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 21:03:43,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:43,611 INFO L262 TraceCheckSpWp]: Trace formula consists of 3334 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:03:43,640 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2023-11-21 21:03:44,155 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:44,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049708324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:44,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:03:44,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-21 21:03:44,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864783804] [2023-11-21 21:03:44,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:44,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:44,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:44,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:44,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:03:44,159 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) [2023-11-21 21:03:45,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:45,884 INFO L93 Difference]: Finished difference Result 2260 states and 3277 transitions. [2023-11-21 21:03:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:03:45,885 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 [2023-11-21 21:03:45,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:45,903 INFO L225 Difference]: With dead ends: 2260 [2023-11-21 21:03:45,904 INFO L226 Difference]: Without dead ends: 2256 [2023-11-21 21:03:45,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 337 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:03:45,907 INFO L413 NwaCegarLoop]: 1952 mSDtfsCounter, 2121 mSDsluCounter, 577 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.5s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:45,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2121 Valid, 2529 Invalid, 334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-21 21:03:45,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2256 states. [2023-11-21 21:03:46,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2256 to 2254. [2023-11-21 21:03:46,039 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) [2023-11-21 21:03:46,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 3271 transitions. [2023-11-21 21:03:46,058 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 3271 transitions. Word has length 241 [2023-11-21 21:03:46,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:46,059 INFO L495 AbstractCegarLoop]: Abstraction has 2254 states and 3271 transitions. [2023-11-21 21:03:46,060 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) [2023-11-21 21:03:46,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 3271 transitions. [2023-11-21 21:03:46,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2023-11-21 21:03:46,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:46,064 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] [2023-11-21 21:03:46,096 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:46,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:46,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:46,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:46,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1905634897, now seen corresponding path program 1 times [2023-11-21 21:03:46,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:46,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316557677] [2023-11-21 21:03:46,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:46,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:46,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:03:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:47,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-21 21:03:47,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:47,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-21 21:03:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:47,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-21 21:03:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2023-11-21 21:03:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2023-11-21 21:03:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:47,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2023-11-21 21:03:47,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:47,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:47,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1066 trivial. 0 not checked. [2023-11-21 21:03:47,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:47,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316557677] [2023-11-21 21:03:47,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316557677] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:03:47,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205194818] [2023-11-21 21:03:47,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:47,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:47,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:47,884 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:03:47,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 21:03:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:49,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 3336 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:03:49,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:03:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 1078 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1078 trivial. 0 not checked. [2023-11-21 21:03:49,747 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:03:49,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205194818] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:49,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:03:49,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-21 21:03:49,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60447806] [2023-11-21 21:03:49,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:49,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:03:49,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:49,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:03:49,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:03:49,750 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) [2023-11-21 21:03:52,472 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 [] [2023-11-21 21:03:52,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:52,886 INFO L93 Difference]: Finished difference Result 2256 states and 3272 transitions. [2023-11-21 21:03:52,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:03:52,887 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 [2023-11-21 21:03:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:52,905 INFO L225 Difference]: With dead ends: 2256 [2023-11-21 21:03:52,905 INFO L226 Difference]: Without dead ends: 2253 [2023-11-21 21:03:52,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:03:52,908 INFO L413 NwaCegarLoop]: 1951 mSDtfsCounter, 2130 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2130 SdHoareTripleChecker+Valid, 1951 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:52,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2130 Valid, 1951 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 246 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2023-11-21 21:03:52,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2023-11-21 21:03:53,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2253. [2023-11-21 21:03:53,049 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) [2023-11-21 21:03:53,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2253 states to 2253 states and 3269 transitions. [2023-11-21 21:03:53,068 INFO L78 Accepts]: Start accepts. Automaton has 2253 states and 3269 transitions. Word has length 242 [2023-11-21 21:03:53,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:53,069 INFO L495 AbstractCegarLoop]: Abstraction has 2253 states and 3269 transitions. [2023-11-21 21:03:53,069 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) [2023-11-21 21:03:53,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2253 states and 3269 transitions. [2023-11-21 21:03:53,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2023-11-21 21:03:53,073 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:53,074 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] [2023-11-21 21:03:53,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 21:03:53,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed5ad2ae-fc34-496f-b413-11ad8a6294f6/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:03:53,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:53,288 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:53,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1054127133, now seen corresponding path program 1 times [2023-11-21 21:03:53,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:53,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68994038] [2023-11-21 21:03:53,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:53,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms