./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl --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 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:15:19,068 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:15:19,188 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-12 02:15:19,198 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:15:19,199 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:15:19,244 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:15:19,245 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:15:19,245 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:15:19,246 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:15:19,247 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:15:19,248 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:15:19,249 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:15:19,250 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:15:19,251 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:15:19,252 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:15:19,252 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:15:19,253 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:15:19,254 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:15:19,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:15:19,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:15:19,256 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:15:19,257 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:15:19,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:15:19,259 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:15:19,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:15:19,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:19,261 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:15:19,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:15:19,262 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:15:19,263 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:15:19,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:15:19,264 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:15:19,265 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:15:19,265 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:15:19,265 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:15:19,266 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:15:19,266 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_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae [2023-11-12 02:15:19,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:15:19,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:15:19,618 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:15:19,619 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:15:19,620 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:15:19,622 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2023-11-12 02:15:22,875 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:15:23,591 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:15:23,592 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2023-11-12 02:15:23,655 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl/data/deb784d3c/f98aef3cb2644312a524045dbd78f11e/FLAG6f6de06ba [2023-11-12 02:15:23,673 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl/data/deb784d3c/f98aef3cb2644312a524045dbd78f11e [2023-11-12 02:15:23,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:15:23,683 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:15:23,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:23,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:15:23,694 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:15:23,694 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:23" (1/1) ... [2023-11-12 02:15:23,696 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66ac3d65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:23, skipping insertion in model container [2023-11-12 02:15:23,696 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:15:23" (1/1) ... [2023-11-12 02:15:23,850 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:15:26,146 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_cb6c9f68-cb79-4245-b02e-a027a6293642/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2023-11-12 02:15:26,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:26,332 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:15:26,431 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3897] [2023-11-12 02:15:26,433 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bt %2,%1\n\tsbb %0,%0": "=r" (oldbit): "m" (*((unsigned long *)addr)), "Ir" (nr)); [3905-3906] [2023-11-12 02:15:26,434 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3922] [2023-11-12 02:15:26,435 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3925] [2023-11-12 02:15:26,435 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3928] [2023-11-12 02:15:26,436 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3931] [2023-11-12 02:15:26,437 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; subl %2,%0; sete %1": "+m" (v->counter), "=qm" (c): "ir" (i): "memory"); [3973-3974] [2023-11-12 02:15:26,438 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"); [3985-3986] [2023-11-12 02:15:26,439 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"); [3989-3990] [2023-11-12 02:15:26,441 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"); [3993-3994] [2023-11-12 02:15:26,441 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"); [3997-3998] [2023-11-12 02:15:26,445 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& kernel_stack)); [4065] [2023-11-12 02:15:26,446 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [4068] [2023-11-12 02:15:26,446 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [4071] [2023-11-12 02:15:26,446 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [4074] [2023-11-12 02:15:26,477 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4424] [2023-11-12 02:15:26,478 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4427] [2023-11-12 02:15:26,899 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_cb6c9f68-cb79-4245-b02e-a027a6293642/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2023-11-12 02:15:26,968 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:15:27,080 WARN L672 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:15:27,080 WARN L672 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:15:27,081 WARN L672 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:15:27,081 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:15:27,088 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:15:27,089 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:27 WrapperNode [2023-11-12 02:15:27,090 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:15:27,091 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:27,091 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:15:27,091 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:15:27,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:27" (1/1) ... [2023-11-12 02:15:27,237 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:27" (1/1) ... [2023-11-12 02:15:27,531 INFO L138 Inliner]: procedures = 282, calls = 3119, calls flagged for inlining = 131, calls inlined = 122, statements flattened = 7698 [2023-11-12 02:15:27,531 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:15:27,532 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:15:27,532 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:15:27,532 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:15:27,543 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:27" (1/1) ... [2023-11-12 02:15:27,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:27" (1/1) ... [2023-11-12 02:15:27,631 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:27" (1/1) ... [2023-11-12 02:15:27,632 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:27" (1/1) ... [2023-11-12 02:15:27,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:27" (1/1) ... [2023-11-12 02:15:27,895 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:27" (1/1) ... [2023-11-12 02:15:27,927 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:27" (1/1) ... [2023-11-12 02:15:27,959 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:27" (1/1) ... [2023-11-12 02:15:28,019 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:15:28,021 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:15:28,022 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:15:28,022 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:15:28,023 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:27" (1/1) ... [2023-11-12 02:15:28,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:15:28,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:15:28,074 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:15:28,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb6c9f68-cb79-4245-b02e-a027a6293642/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:15:28,276 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-12 02:15:28,277 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2023-11-12 02:15:28,277 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2023-11-12 02:15:28,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 02:15:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 02:15:28,278 INFO L130 BoogieDeclarations]: Found specification of procedure driver_remove_file [2023-11-12 02:15:28,279 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_remove_file [2023-11-12 02:15:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure find_partition [2023-11-12 02:15:28,280 INFO L138 BoogieDeclarations]: Found implementation of procedure find_partition [2023-11-12 02:15:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-11-12 02:15:28,280 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-11-12 02:15:28,280 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2023-11-12 02:15:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2023-11-12 02:15:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2023-11-12 02:15:28,282 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2023-11-12 02:15:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-12 02:15:28,285 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-12 02:15:28,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 02:15:28,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 02:15:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure class_unregister [2023-11-12 02:15:28,286 INFO L138 BoogieDeclarations]: Found implementation of procedure class_unregister [2023-11-12 02:15:28,286 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-11-12 02:15:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-11-12 02:15:28,287 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-12 02:15:28,287 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-12 02:15:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 02:15:28,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 02:15:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2023-11-12 02:15:28,288 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2023-11-12 02:15:28,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-12 02:15:28,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-12 02:15:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-12 02:15:28,289 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-12 02:15:28,289 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2023-11-12 02:15:28,289 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2023-11-12 02:15:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_rq_timeout [2023-11-12 02:15:28,290 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_rq_timeout [2023-11-12 02:15:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure set_mode_densblk [2023-11-12 02:15:28,290 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mode_densblk [2023-11-12 02:15:28,290 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-12 02:15:28,291 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-12 02:15:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2023-11-12 02:15:28,291 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2023-11-12 02:15:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:15:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-12 02:15:28,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_st_ref_mutex [2023-11-12 02:15:28,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_st_ref_mutex [2023-11-12 02:15:28,292 INFO L130 BoogieDeclarations]: Found specification of procedure read_mode_page [2023-11-12 02:15:28,292 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mode_page [2023-11-12 02:15:28,293 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2023-11-12 02:15:28,294 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2023-11-12 02:15:28,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:15:28,295 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2023-11-12 02:15:28,295 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2023-11-12 02:15:28,295 INFO L130 BoogieDeclarations]: Found specification of procedure st_do_scsi [2023-11-12 02:15:28,295 INFO L138 BoogieDeclarations]: Found implementation of procedure st_do_scsi [2023-11-12 02:15:28,295 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-12 02:15:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-12 02:15:28,296 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-12 02:15:28,296 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2023-11-12 02:15:28,297 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2023-11-12 02:15:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2023-11-12 02:15:28,297 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2023-11-12 02:15:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:15:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure st_release_request [2023-11-12 02:15:28,298 INFO L138 BoogieDeclarations]: Found implementation of procedure st_release_request [2023-11-12 02:15:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:15:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure remove_cdevs [2023-11-12 02:15:28,299 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_cdevs [2023-11-12 02:15:28,299 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-12 02:15:28,299 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-12 02:15:28,299 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 02:15:28,299 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 02:15:28,300 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-11-12 02:15:28,301 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-11-12 02:15:28,301 INFO L130 BoogieDeclarations]: Found specification of procedure get_location [2023-11-12 02:15:28,301 INFO L138 BoogieDeclarations]: Found implementation of procedure get_location [2023-11-12 02:15:28,301 INFO L130 BoogieDeclarations]: Found specification of procedure st_compression [2023-11-12 02:15:28,301 INFO L138 BoogieDeclarations]: Found implementation of procedure st_compression [2023-11-12 02:15:28,301 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_put_device [2023-11-12 02:15:28,302 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_put_device [2023-11-12 02:15:28,302 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-11-12 02:15:28,302 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-11-12 02:15:28,302 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-12 02:15:28,302 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-12 02:15:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-12 02:15:28,303 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-12 02:15:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure check_tape [2023-11-12 02:15:28,303 INFO L138 BoogieDeclarations]: Found implementation of procedure check_tape [2023-11-12 02:15:28,303 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-12 02:15:28,303 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-12 02:15:28,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-12 02:15:28,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-12 02:15:28,304 INFO L130 BoogieDeclarations]: Found specification of procedure switch_partition [2023-11-12 02:15:28,304 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_partition [2023-11-12 02:15:28,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_scsi_tape [2023-11-12 02:15:28,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_scsi_tape [2023-11-12 02:15:28,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 02:15:28,306 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-12 02:15:28,306 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-12 02:15:28,306 INFO L130 BoogieDeclarations]: Found specification of procedure setup_buffering [2023-11-12 02:15:28,306 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_buffering [2023-11-12 02:15:28,306 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-12 02:15:28,307 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-12 02:15:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tape_put [2023-11-12 02:15:28,308 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tape_put [2023-11-12 02:15:28,308 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 02:15:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2023-11-12 02:15:28,309 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_ioctl [2023-11-12 02:15:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:15:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure create_one_cdev [2023-11-12 02:15:28,309 INFO L138 BoogieDeclarations]: Found implementation of procedure create_one_cdev [2023-11-12 02:15:28,309 INFO L130 BoogieDeclarations]: Found specification of procedure queue_dma_alignment [2023-11-12 02:15:28,310 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_dma_alignment [2023-11-12 02:15:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure do_load_unload [2023-11-12 02:15:28,310 INFO L138 BoogieDeclarations]: Found implementation of procedure do_load_unload [2023-11-12 02:15:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure st_flush_write_buffer [2023-11-12 02:15:28,310 INFO L138 BoogieDeclarations]: Found implementation of procedure st_flush_write_buffer [2023-11-12 02:15:28,310 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 02:15:28,311 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 02:15:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2023-11-12 02:15:28,311 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2023-11-12 02:15:28,311 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2023-11-12 02:15:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2023-11-12 02:15:28,312 INFO L130 BoogieDeclarations]: Found specification of procedure st_chk_result [2023-11-12 02:15:28,312 INFO L138 BoogieDeclarations]: Found implementation of procedure st_chk_result [2023-11-12 02:15:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2023-11-12 02:15:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2023-11-12 02:15:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 02:15:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 02:15:28,313 INFO L130 BoogieDeclarations]: Found specification of procedure write_behind_check [2023-11-12 02:15:28,313 INFO L138 BoogieDeclarations]: Found implementation of procedure write_behind_check [2023-11-12 02:15:28,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:15:28,316 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-12 02:15:28,317 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-12 02:15:28,320 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-11-12 02:15:28,320 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-11-12 02:15:28,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 02:15:28,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 02:15:28,322 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_st_ref_mutex [2023-11-12 02:15:28,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_st_ref_mutex [2023-11-12 02:15:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:15:28,323 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-12 02:15:28,324 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-12 02:15:28,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:15:28,329 INFO L130 BoogieDeclarations]: Found specification of procedure flush_buffer [2023-11-12 02:15:28,329 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_buffer [2023-11-12 02:15:28,330 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2023-11-12 02:15:28,330 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2023-11-12 02:15:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:15:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-12 02:15:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure driver_create_file [2023-11-12 02:15:28,331 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_create_file [2023-11-12 02:15:28,331 INFO L130 BoogieDeclarations]: Found specification of procedure release_buffering [2023-11-12 02:15:28,332 INFO L138 BoogieDeclarations]: Found implementation of procedure release_buffering [2023-11-12 02:15:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2023-11-12 02:15:28,332 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2023-11-12 02:15:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2023-11-12 02:15:28,332 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2023-11-12 02:15:28,332 INFO L130 BoogieDeclarations]: Found specification of procedure write_mode_page [2023-11-12 02:15:28,333 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mode_page [2023-11-12 02:15:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-12 02:15:28,333 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-12 02:15:28,333 INFO L130 BoogieDeclarations]: Found specification of procedure rw_checks [2023-11-12 02:15:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure rw_checks [2023-11-12 02:15:28,334 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2023-11-12 02:15:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2023-11-12 02:15:28,334 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2023-11-12 02:15:28,334 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2023-11-12 02:15:28,334 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_scsi_tape [2023-11-12 02:15:28,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_scsi_tape [2023-11-12 02:15:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-12 02:15:28,335 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-12 02:15:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:15:28,335 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_get_device [2023-11-12 02:15:28,335 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_get_device [2023-11-12 02:15:28,336 INFO L130 BoogieDeclarations]: Found specification of procedure set_location [2023-11-12 02:15:28,336 INFO L138 BoogieDeclarations]: Found implementation of procedure set_location [2023-11-12 02:15:28,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:15:28,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:15:29,419 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:15:29,424 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:15:41,582 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:15:41,615 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:15:41,615 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-12 02:15:41,620 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:41 BoogieIcfgContainer [2023-11-12 02:15:41,621 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:15:41,623 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:15:41,623 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:15:41,627 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:15:41,627 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:15:23" (1/3) ... [2023-11-12 02:15:41,628 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcf260b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:41, skipping insertion in model container [2023-11-12 02:15:41,628 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:15:27" (2/3) ... [2023-11-12 02:15:41,629 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcf260b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:15:41, skipping insertion in model container [2023-11-12 02:15:41,629 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:15:41" (3/3) ... [2023-11-12 02:15:41,633 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2023-11-12 02:15:41,653 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:15:41,654 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-12 02:15:41,779 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:15:41,787 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;@a9d5a14, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:15:41,787 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-12 02:15:41,804 INFO L276 IsEmpty]: Start isEmpty. Operand has 2457 states, 1991 states have (on average 1.508789552988448) internal successors, (3004), 2013 states have internal predecessors, (3004), 384 states have call successors, (384), 80 states have call predecessors, (384), 80 states have return successors, (384), 384 states have call predecessors, (384), 384 states have call successors, (384) [2023-11-12 02:15:41,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-12 02:15:41,815 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:41,815 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:41,816 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:15:41,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:41,824 INFO L85 PathProgramCache]: Analyzing trace with hash -581421832, now seen corresponding path program 1 times [2023-11-12 02:15:41,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:41,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812594352] [2023-11-12 02:15:41,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:41,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:42,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:42,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-12 02:15:42,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:42,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:15:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:42,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:15:42,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:42,777 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:15:42,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:42,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812594352] [2023-11-12 02:15:42,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812594352] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:42,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:42,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:42,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983617862] [2023-11-12 02:15:42,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:42,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:42,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:42,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:42,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:42,836 INFO L87 Difference]: Start difference. First operand has 2457 states, 1991 states have (on average 1.508789552988448) internal successors, (3004), 2013 states have internal predecessors, (3004), 384 states have call successors, (384), 80 states have call predecessors, (384), 80 states have return successors, (384), 384 states have call predecessors, (384), 384 states have call successors, (384) Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:15:43,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:43,385 INFO L93 Difference]: Finished difference Result 4906 states and 7647 transitions. [2023-11-12 02:15:43,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:43,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-11-12 02:15:43,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:43,431 INFO L225 Difference]: With dead ends: 4906 [2023-11-12 02:15:43,432 INFO L226 Difference]: Without dead ends: 2451 [2023-11-12 02:15:43,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:43,464 INFO L413 NwaCegarLoop]: 3737 mSDtfsCounter, 3733 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3733 SdHoareTripleChecker+Valid, 3737 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:43,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3733 Valid, 3737 Invalid, 1 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:15:43,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2023-11-12 02:15:43,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2451. [2023-11-12 02:15:43,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 1987 states have (on average 1.4967287367891293) internal successors, (2974), 2007 states have internal predecessors, (2974), 384 states have call successors, (384), 80 states have call predecessors, (384), 79 states have return successors, (376), 376 states have call predecessors, (376), 376 states have call successors, (376) [2023-11-12 02:15:43,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3734 transitions. [2023-11-12 02:15:43,763 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3734 transitions. Word has length 28 [2023-11-12 02:15:43,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:43,765 INFO L495 AbstractCegarLoop]: Abstraction has 2451 states and 3734 transitions. [2023-11-12 02:15:43,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:15:43,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3734 transitions. [2023-11-12 02:15:43,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-12 02:15:43,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:43,769 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:43,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:15:43,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:15:43,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash -158720006, now seen corresponding path program 1 times [2023-11-12 02:15:43,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:43,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579220712] [2023-11-12 02:15:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:43,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:44,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-12 02:15:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:44,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:15:44,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:44,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:15:44,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:44,225 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:15:44,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:44,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579220712] [2023-11-12 02:15:44,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579220712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:44,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:44,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:44,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920635876] [2023-11-12 02:15:44,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:44,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:44,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:44,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:44,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:44,237 INFO L87 Difference]: Start difference. First operand 2451 states and 3734 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:15:44,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:44,456 INFO L93 Difference]: Finished difference Result 4895 states and 7459 transitions. [2023-11-12 02:15:44,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:44,456 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2023-11-12 02:15:44,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:44,486 INFO L225 Difference]: With dead ends: 4895 [2023-11-12 02:15:44,487 INFO L226 Difference]: Without dead ends: 2451 [2023-11-12 02:15:44,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:44,503 INFO L413 NwaCegarLoop]: 3732 mSDtfsCounter, 3727 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3727 SdHoareTripleChecker+Valid, 3732 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:44,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3727 Valid, 3732 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:15:44,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2023-11-12 02:15:44,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2451. [2023-11-12 02:15:44,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 1987 states have (on average 1.4962254655259184) internal successors, (2973), 2007 states have internal predecessors, (2973), 384 states have call successors, (384), 80 states have call predecessors, (384), 79 states have return successors, (376), 376 states have call predecessors, (376), 376 states have call successors, (376) [2023-11-12 02:15:44,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3733 transitions. [2023-11-12 02:15:44,651 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3733 transitions. Word has length 28 [2023-11-12 02:15:44,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:44,651 INFO L495 AbstractCegarLoop]: Abstraction has 2451 states and 3733 transitions. [2023-11-12 02:15:44,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:15:44,651 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3733 transitions. [2023-11-12 02:15:44,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-12 02:15:44,653 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:44,653 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:44,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:15:44,654 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:15:44,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:44,654 INFO L85 PathProgramCache]: Analyzing trace with hash -976368456, now seen corresponding path program 1 times [2023-11-12 02:15:44,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:44,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293369800] [2023-11-12 02:15:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:44,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:44,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-12 02:15:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:44,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:15:44,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:44,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:15:44,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:44,952 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:15:44,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:44,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293369800] [2023-11-12 02:15:44,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293369800] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:44,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:44,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:44,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294416629] [2023-11-12 02:15:44,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:44,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:44,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:44,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:44,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:44,958 INFO L87 Difference]: Start difference. First operand 2451 states and 3733 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:15:45,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:45,290 INFO L93 Difference]: Finished difference Result 2453 states and 3734 transitions. [2023-11-12 02:15:45,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:45,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2023-11-12 02:15:45,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:45,315 INFO L225 Difference]: With dead ends: 2453 [2023-11-12 02:15:45,316 INFO L226 Difference]: Without dead ends: 2450 [2023-11-12 02:15:45,318 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:45,320 INFO L413 NwaCegarLoop]: 3730 mSDtfsCounter, 3714 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3714 SdHoareTripleChecker+Valid, 3730 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:45,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3714 Valid, 3730 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:15:45,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2023-11-12 02:15:45,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2450. [2023-11-12 02:15:45,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2450 states, 1987 states have (on average 1.4957221942627077) internal successors, (2972), 2006 states have internal predecessors, (2972), 383 states have call successors, (383), 80 states have call predecessors, (383), 79 states have return successors, (376), 376 states have call predecessors, (376), 376 states have call successors, (376) [2023-11-12 02:15:45,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3731 transitions. [2023-11-12 02:15:45,491 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3731 transitions. Word has length 28 [2023-11-12 02:15:45,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:45,492 INFO L495 AbstractCegarLoop]: Abstraction has 2450 states and 3731 transitions. [2023-11-12 02:15:45,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:15:45,492 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3731 transitions. [2023-11-12 02:15:45,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-12 02:15:45,502 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:45,502 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:45,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:15:45,503 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:15:45,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash -203406358, now seen corresponding path program 1 times [2023-11-12 02:15:45,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:45,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740047293] [2023-11-12 02:15:45,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:45,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:45,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:45,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-12 02:15:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:45,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:15:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:45,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:15:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:45,809 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:15:45,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:45,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740047293] [2023-11-12 02:15:45,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740047293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:45,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:45,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:45,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147423002] [2023-11-12 02:15:45,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:45,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:45,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:45,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:45,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:45,813 INFO L87 Difference]: Start difference. First operand 2450 states and 3731 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:15:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:46,367 INFO L93 Difference]: Finished difference Result 7214 states and 11003 transitions. [2023-11-12 02:15:46,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:46,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 29 [2023-11-12 02:15:46,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:46,431 INFO L225 Difference]: With dead ends: 7214 [2023-11-12 02:15:46,432 INFO L226 Difference]: Without dead ends: 4811 [2023-11-12 02:15:46,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:46,465 INFO L413 NwaCegarLoop]: 4547 mSDtfsCounter, 3709 mSDsluCounter, 3596 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3709 SdHoareTripleChecker+Valid, 8143 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:46,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3709 Valid, 8143 Invalid, 14 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:15:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4811 states. [2023-11-12 02:15:46,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4811 to 4806. [2023-11-12 02:15:46,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4806 states, 3913 states have (on average 1.497827753641707) internal successors, (5861), 3944 states have internal predecessors, (5861), 737 states have call successors, (737), 157 states have call predecessors, (737), 155 states have return successors, (732), 726 states have call predecessors, (732), 726 states have call successors, (732) [2023-11-12 02:15:46,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4806 states to 4806 states and 7330 transitions. [2023-11-12 02:15:46,941 INFO L78 Accepts]: Start accepts. Automaton has 4806 states and 7330 transitions. Word has length 29 [2023-11-12 02:15:46,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:46,942 INFO L495 AbstractCegarLoop]: Abstraction has 4806 states and 7330 transitions. [2023-11-12 02:15:46,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:15:46,943 INFO L276 IsEmpty]: Start isEmpty. Operand 4806 states and 7330 transitions. [2023-11-12 02:15:46,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-12 02:15:46,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:46,945 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:46,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:15:46,945 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:15:46,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:46,946 INFO L85 PathProgramCache]: Analyzing trace with hash -2011380229, now seen corresponding path program 1 times [2023-11-12 02:15:46,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:46,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644391293] [2023-11-12 02:15:46,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:46,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:47,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:47,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-12 02:15:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:47,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:15:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:47,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:15:47,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:15:47,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:47,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644391293] [2023-11-12 02:15:47,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644391293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:47,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:47,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:47,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91278274] [2023-11-12 02:15:47,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:47,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:47,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:47,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:47,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:47,203 INFO L87 Difference]: Start difference. First operand 4806 states and 7330 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:15:47,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:47,573 INFO L93 Difference]: Finished difference Result 4808 states and 7331 transitions. [2023-11-12 02:15:47,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:47,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2023-11-12 02:15:47,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:47,631 INFO L225 Difference]: With dead ends: 4808 [2023-11-12 02:15:47,632 INFO L226 Difference]: Without dead ends: 4805 [2023-11-12 02:15:47,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:47,638 INFO L413 NwaCegarLoop]: 3728 mSDtfsCounter, 3710 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3710 SdHoareTripleChecker+Valid, 3728 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:47,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3710 Valid, 3728 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:15:47,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4805 states. [2023-11-12 02:15:48,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4805 to 4805. [2023-11-12 02:15:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4805 states, 3913 states have (on average 1.497572195246614) internal successors, (5860), 3943 states have internal predecessors, (5860), 736 states have call successors, (736), 157 states have call predecessors, (736), 155 states have return successors, (732), 726 states have call predecessors, (732), 726 states have call successors, (732) [2023-11-12 02:15:48,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4805 states to 4805 states and 7328 transitions. [2023-11-12 02:15:48,112 INFO L78 Accepts]: Start accepts. Automaton has 4805 states and 7328 transitions. Word has length 30 [2023-11-12 02:15:48,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:48,113 INFO L495 AbstractCegarLoop]: Abstraction has 4805 states and 7328 transitions. [2023-11-12 02:15:48,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:15:48,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4805 states and 7328 transitions. [2023-11-12 02:15:48,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-12 02:15:48,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:48,115 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:48,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:15:48,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:15:48,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:48,116 INFO L85 PathProgramCache]: Analyzing trace with hash 2070976781, now seen corresponding path program 1 times [2023-11-12 02:15:48,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:48,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56164604] [2023-11-12 02:15:48,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:48,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:48,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-12 02:15:48,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:48,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:15:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:48,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:15:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:48,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:15:48,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:48,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56164604] [2023-11-12 02:15:48,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56164604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:48,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:48,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:15:48,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635831135] [2023-11-12 02:15:48,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:48,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:15:48,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:48,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:15:48,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:48,366 INFO L87 Difference]: Start difference. First operand 4805 states and 7328 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:15:48,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:15:48,765 INFO L93 Difference]: Finished difference Result 4881 states and 7392 transitions. [2023-11-12 02:15:48,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:15:48,765 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 31 [2023-11-12 02:15:48,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:15:48,821 INFO L225 Difference]: With dead ends: 4881 [2023-11-12 02:15:48,821 INFO L226 Difference]: Without dead ends: 4859 [2023-11-12 02:15:48,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:15:48,828 INFO L413 NwaCegarLoop]: 3730 mSDtfsCounter, 3545 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3545 SdHoareTripleChecker+Valid, 3918 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:15:48,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 3918 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:15:48,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4859 states. [2023-11-12 02:15:49,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4859 to 4857. [2023-11-12 02:15:49,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4857 states, 3960 states have (on average 1.490909090909091) internal successors, (5904), 3988 states have internal predecessors, (5904), 725 states have call successors, (725), 173 states have call predecessors, (725), 171 states have return successors, (723), 717 states have call predecessors, (723), 717 states have call successors, (723) [2023-11-12 02:15:49,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 7352 transitions. [2023-11-12 02:15:49,324 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 7352 transitions. Word has length 31 [2023-11-12 02:15:49,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:15:49,325 INFO L495 AbstractCegarLoop]: Abstraction has 4857 states and 7352 transitions. [2023-11-12 02:15:49,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-12 02:15:49,326 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 7352 transitions. [2023-11-12 02:15:49,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-12 02:15:49,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:15:49,336 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:15:49,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:15:49,337 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:15:49,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:15:49,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1500224718, now seen corresponding path program 1 times [2023-11-12 02:15:49,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:15:49,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180569656] [2023-11-12 02:15:49,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:15:49,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:15:49,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:49,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-12 02:15:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:49,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-12 02:15:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:49,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-12 02:15:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:49,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:15:49,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:49,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-12 02:15:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:49,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-12 02:15:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:49,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-12 02:15:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:49,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:15:49,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:15:49,957 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-12 02:15:49,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:15:49,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180569656] [2023-11-12 02:15:49,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180569656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:15:49,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:15:49,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:15:49,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958017810] [2023-11-12 02:15:49,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:15:49,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:15:49,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:15:49,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:15:49,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:15:49,961 INFO L87 Difference]: Start difference. First operand 4857 states and 7352 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-12 02:15:57,268 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 []