./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 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu/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_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu --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-9bd2c7f [2023-11-19 07:43:13,926 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:14,034 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-19 07:43:14,041 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:14,042 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:14,083 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:14,083 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:14,084 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:14,086 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:14,091 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:14,093 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:14,093 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:14,094 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:14,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:14,095 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:43:14,096 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:14,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:14,097 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:43:14,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:14,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:43:14,098 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:43:14,099 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:14,100 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:14,100 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:14,101 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:14,101 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:14,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:14,102 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:14,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:43:14,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:43:14,105 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:43:14,105 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:14,105 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:43:14,106 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:14,106 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:14,106 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:14,106 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_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2eef4809e0fb5b801f2479dfde07a6f5e1ac3784201f878d167f0654e03bdeae [2023-11-19 07:43:14,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:14,403 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:14,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:14,407 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:14,408 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:14,409 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2023-11-19 07:43:17,602 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:18,232 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:18,233 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2023-11-19 07:43:18,290 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu/data/287a4bb03/0385603664874b828c20e656f4ac6963/FLAG52c2cba91 [2023-11-19 07:43:18,308 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu/data/287a4bb03/0385603664874b828c20e656f4ac6963 [2023-11-19 07:43:18,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:18,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:18,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:18,321 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:18,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:18,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:18" (1/1) ... [2023-11-19 07:43:18,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26dace56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:18, skipping insertion in model container [2023-11-19 07:43:18,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:18" (1/1) ... [2023-11-19 07:43:18,504 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:20,703 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_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2023-11-19 07:43:20,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:20,882 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:43:21,015 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] [2023-11-19 07:43:21,017 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] [2023-11-19 07:43:21,018 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3922] [2023-11-19 07:43:21,019 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3925] [2023-11-19 07:43:21,020 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3928] [2023-11-19 07:43:21,020 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3931] [2023-11-19 07:43:21,021 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] [2023-11-19 07:43:21,022 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] [2023-11-19 07:43:21,023 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] [2023-11-19 07:43:21,025 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] [2023-11-19 07:43:21,026 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] [2023-11-19 07:43:21,029 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& kernel_stack)); [4065] [2023-11-19 07:43:21,030 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [4068] [2023-11-19 07:43:21,030 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [4071] [2023-11-19 07:43:21,030 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& kernel_stack)); [4074] [2023-11-19 07:43:21,058 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4424] [2023-11-19 07:43:21,059 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4427] [2023-11-19 07:43:21,407 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_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/sv-benchmarks/c/ldv-consumption/linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i[269371,269384] [2023-11-19 07:43:21,427 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:21,541 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:21,541 WARN L675 CHandler]: The function __xadd_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:21,541 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:21,542 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:21,550 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:43:21,551 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:21 WrapperNode [2023-11-19 07:43:21,551 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:21,552 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:21,552 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:43:21,553 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:43:21,559 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:21" (1/1) ... [2023-11-19 07:43:21,713 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:21" (1/1) ... [2023-11-19 07:43:22,020 INFO L138 Inliner]: procedures = 282, calls = 3119, calls flagged for inlining = 131, calls inlined = 122, statements flattened = 7698 [2023-11-19 07:43:22,020 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:22,021 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:43:22,021 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:43:22,021 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:43:22,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:21" (1/1) ... [2023-11-19 07:43:22,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:21" (1/1) ... [2023-11-19 07:43:22,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:21" (1/1) ... [2023-11-19 07:43:22,088 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:21" (1/1) ... [2023-11-19 07:43:22,370 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:21" (1/1) ... [2023-11-19 07:43:22,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:21" (1/1) ... [2023-11-19 07:43:22,474 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:21" (1/1) ... [2023-11-19 07:43:22,501 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:21" (1/1) ... [2023-11-19 07:43:22,613 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:43:22,614 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:43:22,615 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:43:22,615 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:43:22,616 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:21" (1/1) ... [2023-11-19 07:43:22,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:22,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:22,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:43:22,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_74e573e4-f7cb-4708-a8e5-cda31c6e99a9/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:43:22,692 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-19 07:43:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure cdev_del [2023-11-19 07:43:22,693 INFO L138 BoogieDeclarations]: Found implementation of procedure cdev_del [2023-11-19 07:43:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 07:43:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:43:22,693 INFO L130 BoogieDeclarations]: Found specification of procedure driver_remove_file [2023-11-19 07:43:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_remove_file [2023-11-19 07:43:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure find_partition [2023-11-19 07:43:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure find_partition [2023-11-19 07:43:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2023-11-19 07:43:22,694 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2023-11-19 07:43:22,694 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2023-11-19 07:43:22,695 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2023-11-19 07:43:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure debug_lockdep_rcu_enabled [2023-11-19 07:43:22,695 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_lockdep_rcu_enabled [2023-11-19 07:43:22,695 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-19 07:43:22,695 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-19 07:43:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 07:43:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 07:43:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure class_unregister [2023-11-19 07:43:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure class_unregister [2023-11-19 07:43:22,696 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-11-19 07:43:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-11-19 07:43:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 07:43:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 07:43:22,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 07:43:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 07:43:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2023-11-19 07:43:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2023-11-19 07:43:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2023-11-19 07:43:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2023-11-19 07:43:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 07:43:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 07:43:22,698 INFO L130 BoogieDeclarations]: Found specification of procedure st_int_ioctl [2023-11-19 07:43:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure st_int_ioctl [2023-11-19 07:43:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_rq_timeout [2023-11-19 07:43:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_rq_timeout [2023-11-19 07:43:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure set_mode_densblk [2023-11-19 07:43:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mode_densblk [2023-11-19 07:43:22,699 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 07:43:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 07:43:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2023-11-19 07:43:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2023-11-19 07:43:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:43:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 07:43:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_st_ref_mutex [2023-11-19 07:43:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_st_ref_mutex [2023-11-19 07:43:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure read_mode_page [2023-11-19 07:43:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure read_mode_page [2023-11-19 07:43:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2023-11-19 07:43:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2023-11-19 07:43:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:43:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure put_page [2023-11-19 07:43:22,702 INFO L138 BoogieDeclarations]: Found implementation of procedure put_page [2023-11-19 07:43:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure st_do_scsi [2023-11-19 07:43:22,702 INFO L138 BoogieDeclarations]: Found implementation of procedure st_do_scsi [2023-11-19 07:43:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2023-11-19 07:43:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2023-11-19 07:43:22,703 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2023-11-19 07:43:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2023-11-19 07:43:22,703 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2023-11-19 07:43:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2023-11-19 07:43:22,703 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2023-11-19 07:43:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:43:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure st_release_request [2023-11-19 07:43:22,704 INFO L138 BoogieDeclarations]: Found implementation of procedure st_release_request [2023-11-19 07:43:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:43:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure remove_cdevs [2023-11-19 07:43:22,704 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_cdevs [2023-11-19 07:43:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-11-19 07:43:22,705 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-11-19 07:43:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 07:43:22,705 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 07:43:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2023-11-19 07:43:22,705 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2023-11-19 07:43:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure get_location [2023-11-19 07:43:22,706 INFO L138 BoogieDeclarations]: Found implementation of procedure get_location [2023-11-19 07:43:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure st_compression [2023-11-19 07:43:22,706 INFO L138 BoogieDeclarations]: Found implementation of procedure st_compression [2023-11-19 07:43:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_put_device [2023-11-19 07:43:22,706 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_put_device [2023-11-19 07:43:22,706 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2023-11-19 07:43:22,707 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2023-11-19 07:43:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 07:43:22,707 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 07:43:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 07:43:22,707 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 07:43:22,707 INFO L130 BoogieDeclarations]: Found specification of procedure check_tape [2023-11-19 07:43:22,707 INFO L138 BoogieDeclarations]: Found implementation of procedure check_tape [2023-11-19 07:43:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2023-11-19 07:43:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2023-11-19 07:43:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-19 07:43:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-19 07:43:22,708 INFO L130 BoogieDeclarations]: Found specification of procedure switch_partition [2023-11-19 07:43:22,708 INFO L138 BoogieDeclarations]: Found implementation of procedure switch_partition [2023-11-19 07:43:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_scsi_tape [2023-11-19 07:43:22,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_scsi_tape [2023-11-19 07:43:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 07:43:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-11-19 07:43:22,709 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-11-19 07:43:22,709 INFO L130 BoogieDeclarations]: Found specification of procedure setup_buffering [2023-11-19 07:43:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_buffering [2023-11-19 07:43:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-19 07:43:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-19 07:43:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_tape_put [2023-11-19 07:43:22,710 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_tape_put [2023-11-19 07:43:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 07:43:22,710 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_ioctl [2023-11-19 07:43:22,711 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_ioctl [2023-11-19 07:43:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:43:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure create_one_cdev [2023-11-19 07:43:22,711 INFO L138 BoogieDeclarations]: Found implementation of procedure create_one_cdev [2023-11-19 07:43:22,711 INFO L130 BoogieDeclarations]: Found specification of procedure queue_dma_alignment [2023-11-19 07:43:22,711 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_dma_alignment [2023-11-19 07:43:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure do_load_unload [2023-11-19 07:43:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure do_load_unload [2023-11-19 07:43:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure st_flush_write_buffer [2023-11-19 07:43:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure st_flush_write_buffer [2023-11-19 07:43:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 07:43:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 07:43:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure enlarge_buffer [2023-11-19 07:43:22,713 INFO L138 BoogieDeclarations]: Found implementation of procedure enlarge_buffer [2023-11-19 07:43:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2023-11-19 07:43:22,713 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2023-11-19 07:43:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure st_chk_result [2023-11-19 07:43:22,713 INFO L138 BoogieDeclarations]: Found implementation of procedure st_chk_result [2023-11-19 07:43:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure rcu_read_lock_held [2023-11-19 07:43:22,714 INFO L138 BoogieDeclarations]: Found implementation of procedure rcu_read_lock_held [2023-11-19 07:43:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 07:43:22,714 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 07:43:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure write_behind_check [2023-11-19 07:43:22,714 INFO L138 BoogieDeclarations]: Found implementation of procedure write_behind_check [2023-11-19 07:43:22,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:43:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-11-19 07:43:22,715 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-11-19 07:43:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure kref_put [2023-11-19 07:43:22,715 INFO L138 BoogieDeclarations]: Found implementation of procedure kref_put [2023-11-19 07:43:22,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 07:43:22,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 07:43:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_st_ref_mutex [2023-11-19 07:43:22,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_st_ref_mutex [2023-11-19 07:43:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:43:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-11-19 07:43:22,716 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-11-19 07:43:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:43:22,716 INFO L130 BoogieDeclarations]: Found specification of procedure flush_buffer [2023-11-19 07:43:22,717 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_buffer [2023-11-19 07:43:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2023-11-19 07:43:22,717 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2023-11-19 07:43:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:43:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 07:43:22,717 INFO L130 BoogieDeclarations]: Found specification of procedure driver_create_file [2023-11-19 07:43:22,718 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_create_file [2023-11-19 07:43:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure release_buffering [2023-11-19 07:43:22,718 INFO L138 BoogieDeclarations]: Found implementation of procedure release_buffering [2023-11-19 07:43:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2023-11-19 07:43:22,718 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2023-11-19 07:43:22,718 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2023-11-19 07:43:22,718 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2023-11-19 07:43:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure write_mode_page [2023-11-19 07:43:22,719 INFO L138 BoogieDeclarations]: Found implementation of procedure write_mode_page [2023-11-19 07:43:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2023-11-19 07:43:22,719 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2023-11-19 07:43:22,719 INFO L130 BoogieDeclarations]: Found specification of procedure rw_checks [2023-11-19 07:43:22,719 INFO L138 BoogieDeclarations]: Found implementation of procedure rw_checks [2023-11-19 07:43:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2023-11-19 07:43:22,720 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2023-11-19 07:43:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2023-11-19 07:43:22,720 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2023-11-19 07:43:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_scsi_tape [2023-11-19 07:43:22,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_scsi_tape [2023-11-19 07:43:22,720 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2023-11-19 07:43:22,721 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2023-11-19 07:43:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:43:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_autopm_get_device [2023-11-19 07:43:22,721 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_autopm_get_device [2023-11-19 07:43:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure set_location [2023-11-19 07:43:22,721 INFO L138 BoogieDeclarations]: Found implementation of procedure set_location [2023-11-19 07:43:22,721 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:43:22,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:43:23,651 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:43:23,708 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:43:35,320 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:43:35,361 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:43:35,362 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-19 07:43:35,384 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:35 BoogieIcfgContainer [2023-11-19 07:43:35,384 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:43:35,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:43:35,389 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:43:35,392 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:43:35,393 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:18" (1/3) ... [2023-11-19 07:43:35,394 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13592962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:35, skipping insertion in model container [2023-11-19 07:43:35,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:21" (2/3) ... [2023-11-19 07:43:35,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13592962 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:35, skipping insertion in model container [2023-11-19 07:43:35,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:35" (3/3) ... [2023-11-19 07:43:35,397 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--st.ko-ldv_main0.cil.out.i [2023-11-19 07:43:35,419 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:43:35,420 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:43:35,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:35,567 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;@4b4d0a78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:35,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-19 07:43:35,585 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) [2023-11-19 07:43:35,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:43:35,600 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:35,601 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] [2023-11-19 07:43:35,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:35,610 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:35,610 INFO L85 PathProgramCache]: Analyzing trace with hash -581421832, now seen corresponding path program 1 times [2023-11-19 07:43:35,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:35,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966027885] [2023-11-19 07:43:35,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:35,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:36,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:36,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:43:36,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:36,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:43:36,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:36,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:43:36,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:36,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:43:36,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:36,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966027885] [2023-11-19 07:43:36,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966027885] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:36,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:36,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:43:36,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725210752] [2023-11-19 07:43:36,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:36,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:36,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:36,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:36,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:36,576 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) [2023-11-19 07:43:36,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:36,956 INFO L93 Difference]: Finished difference Result 4906 states and 7647 transitions. [2023-11-19 07:43:36,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:36,959 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 [2023-11-19 07:43:36,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:37,004 INFO L225 Difference]: With dead ends: 4906 [2023-11-19 07:43:37,004 INFO L226 Difference]: Without dead ends: 2451 [2023-11-19 07:43:37,032 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 [2023-11-19 07:43:37,036 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 [2023-11-19 07:43:37,038 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] [2023-11-19 07:43:37,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2023-11-19 07:43:37,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2451. [2023-11-19 07:43:37,297 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) [2023-11-19 07:43:37,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3734 transitions. [2023-11-19 07:43:37,330 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3734 transitions. Word has length 28 [2023-11-19 07:43:37,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:37,332 INFO L495 AbstractCegarLoop]: Abstraction has 2451 states and 3734 transitions. [2023-11-19 07:43:37,332 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) [2023-11-19 07:43:37,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3734 transitions. [2023-11-19 07:43:37,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:43:37,335 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:37,335 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] [2023-11-19 07:43:37,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:43:37,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:37,336 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:37,336 INFO L85 PathProgramCache]: Analyzing trace with hash -158720006, now seen corresponding path program 1 times [2023-11-19 07:43:37,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:37,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178505136] [2023-11-19 07:43:37,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:37,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:37,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:43:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:37,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:43:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:37,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:43:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:43:37,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:37,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178505136] [2023-11-19 07:43:37,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178505136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:37,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:37,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:43:37,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716071123] [2023-11-19 07:43:37,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:37,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:37,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:37,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:37,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:37,702 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) [2023-11-19 07:43:38,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:38,012 INFO L93 Difference]: Finished difference Result 4895 states and 7459 transitions. [2023-11-19 07:43:38,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:38,013 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 [2023-11-19 07:43:38,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:38,045 INFO L225 Difference]: With dead ends: 4895 [2023-11-19 07:43:38,045 INFO L226 Difference]: Without dead ends: 2451 [2023-11-19 07:43:38,063 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 [2023-11-19 07:43:38,065 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 [2023-11-19 07:43:38,067 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] [2023-11-19 07:43:38,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2451 states. [2023-11-19 07:43:38,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2451 to 2451. [2023-11-19 07:43:38,205 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) [2023-11-19 07:43:38,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3733 transitions. [2023-11-19 07:43:38,239 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3733 transitions. Word has length 28 [2023-11-19 07:43:38,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:38,239 INFO L495 AbstractCegarLoop]: Abstraction has 2451 states and 3733 transitions. [2023-11-19 07:43:38,240 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) [2023-11-19 07:43:38,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3733 transitions. [2023-11-19 07:43:38,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:43:38,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:38,242 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] [2023-11-19 07:43:38,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:43:38,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:38,243 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:38,243 INFO L85 PathProgramCache]: Analyzing trace with hash -976368456, now seen corresponding path program 1 times [2023-11-19 07:43:38,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:38,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639744856] [2023-11-19 07:43:38,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:38,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:38,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:43:38,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:38,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:43:38,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:38,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:43:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:38,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:43:38,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:38,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639744856] [2023-11-19 07:43:38,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639744856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:38,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:38,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:43:38,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700713422] [2023-11-19 07:43:38,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:38,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:38,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:38,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:38,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:38,651 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) [2023-11-19 07:43:38,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:38,874 INFO L93 Difference]: Finished difference Result 2453 states and 3734 transitions. [2023-11-19 07:43:38,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:38,874 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 [2023-11-19 07:43:38,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:38,896 INFO L225 Difference]: With dead ends: 2453 [2023-11-19 07:43:38,897 INFO L226 Difference]: Without dead ends: 2450 [2023-11-19 07:43:38,904 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 [2023-11-19 07:43:38,908 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 [2023-11-19 07:43:38,910 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] [2023-11-19 07:43:38,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2450 states. [2023-11-19 07:43:39,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2450 to 2450. [2023-11-19 07:43:39,051 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) [2023-11-19 07:43:39,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2450 states to 2450 states and 3731 transitions. [2023-11-19 07:43:39,073 INFO L78 Accepts]: Start accepts. Automaton has 2450 states and 3731 transitions. Word has length 28 [2023-11-19 07:43:39,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:39,075 INFO L495 AbstractCegarLoop]: Abstraction has 2450 states and 3731 transitions. [2023-11-19 07:43:39,076 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) [2023-11-19 07:43:39,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2450 states and 3731 transitions. [2023-11-19 07:43:39,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 07:43:39,083 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:39,083 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] [2023-11-19 07:43:39,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:43:39,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:39,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:39,089 INFO L85 PathProgramCache]: Analyzing trace with hash -203406358, now seen corresponding path program 1 times [2023-11-19 07:43:39,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:39,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623942455] [2023-11-19 07:43:39,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:39,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:43:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:39,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:43:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:43:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:43:39,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:39,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623942455] [2023-11-19 07:43:39,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623942455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:39,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:39,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:43:39,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130662100] [2023-11-19 07:43:39,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:39,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:39,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:39,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:39,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:39,468 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) [2023-11-19 07:43:39,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:39,984 INFO L93 Difference]: Finished difference Result 7214 states and 11003 transitions. [2023-11-19 07:43:39,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:39,985 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 [2023-11-19 07:43:39,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:40,037 INFO L225 Difference]: With dead ends: 7214 [2023-11-19 07:43:40,037 INFO L226 Difference]: Without dead ends: 4811 [2023-11-19 07:43:40,055 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 [2023-11-19 07:43:40,056 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 [2023-11-19 07:43:40,057 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] [2023-11-19 07:43:40,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4811 states. [2023-11-19 07:43:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4811 to 4806. [2023-11-19 07:43:40,419 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) [2023-11-19 07:43:40,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4806 states to 4806 states and 7330 transitions. [2023-11-19 07:43:40,470 INFO L78 Accepts]: Start accepts. Automaton has 4806 states and 7330 transitions. Word has length 29 [2023-11-19 07:43:40,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:40,470 INFO L495 AbstractCegarLoop]: Abstraction has 4806 states and 7330 transitions. [2023-11-19 07:43:40,471 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) [2023-11-19 07:43:40,471 INFO L276 IsEmpty]: Start isEmpty. Operand 4806 states and 7330 transitions. [2023-11-19 07:43:40,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:43:40,472 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:40,473 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] [2023-11-19 07:43:40,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:43:40,473 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:40,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:40,474 INFO L85 PathProgramCache]: Analyzing trace with hash -2011380229, now seen corresponding path program 1 times [2023-11-19 07:43:40,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:40,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063159091] [2023-11-19 07:43:40,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:40,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:40,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:40,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:43:40,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:40,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:43:40,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:40,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:43:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:40,743 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:43:40,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:40,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063159091] [2023-11-19 07:43:40,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063159091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:40,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:40,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:43:40,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133444111] [2023-11-19 07:43:40,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:40,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:40,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:40,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:40,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:40,747 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) [2023-11-19 07:43:41,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:41,081 INFO L93 Difference]: Finished difference Result 4808 states and 7331 transitions. [2023-11-19 07:43:41,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:41,081 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 [2023-11-19 07:43:41,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:41,139 INFO L225 Difference]: With dead ends: 4808 [2023-11-19 07:43:41,139 INFO L226 Difference]: Without dead ends: 4805 [2023-11-19 07:43:41,143 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 [2023-11-19 07:43:41,144 INFO L413 NwaCegarLoop]: 3728 mSDtfsCounter, 3710 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:41,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3710 Valid, 3728 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:43:41,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4805 states. [2023-11-19 07:43:41,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4805 to 4805. [2023-11-19 07:43:41,486 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) [2023-11-19 07:43:41,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4805 states to 4805 states and 7328 transitions. [2023-11-19 07:43:41,524 INFO L78 Accepts]: Start accepts. Automaton has 4805 states and 7328 transitions. Word has length 30 [2023-11-19 07:43:41,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:41,524 INFO L495 AbstractCegarLoop]: Abstraction has 4805 states and 7328 transitions. [2023-11-19 07:43:41,524 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) [2023-11-19 07:43:41,525 INFO L276 IsEmpty]: Start isEmpty. Operand 4805 states and 7328 transitions. [2023-11-19 07:43:41,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 07:43:41,526 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:41,526 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] [2023-11-19 07:43:41,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:43:41,527 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:41,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:41,527 INFO L85 PathProgramCache]: Analyzing trace with hash 2070976781, now seen corresponding path program 1 times [2023-11-19 07:43:41,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:41,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611209593] [2023-11-19 07:43:41,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:41,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:41,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:41,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:43:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:41,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:43:41,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:41,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:43:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-19 07:43:41,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:41,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611209593] [2023-11-19 07:43:41,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611209593] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:41,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:41,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:43:41,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860331767] [2023-11-19 07:43:41,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:41,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:41,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:41,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:41,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:41,758 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) [2023-11-19 07:43:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:42,063 INFO L93 Difference]: Finished difference Result 4881 states and 7392 transitions. [2023-11-19 07:43:42,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:42,064 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 [2023-11-19 07:43:42,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:42,111 INFO L225 Difference]: With dead ends: 4881 [2023-11-19 07:43:42,111 INFO L226 Difference]: Without dead ends: 4859 [2023-11-19 07:43:42,116 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 [2023-11-19 07:43:42,118 INFO L413 NwaCegarLoop]: 3730 mSDtfsCounter, 3545 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:42,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3545 Valid, 3918 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:43:42,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4859 states. [2023-11-19 07:43:42,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4859 to 4857. [2023-11-19 07:43:42,435 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) [2023-11-19 07:43:42,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4857 states to 4857 states and 7352 transitions. [2023-11-19 07:43:42,468 INFO L78 Accepts]: Start accepts. Automaton has 4857 states and 7352 transitions. Word has length 31 [2023-11-19 07:43:42,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:42,469 INFO L495 AbstractCegarLoop]: Abstraction has 4857 states and 7352 transitions. [2023-11-19 07:43:42,469 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) [2023-11-19 07:43:42,470 INFO L276 IsEmpty]: Start isEmpty. Operand 4857 states and 7352 transitions. [2023-11-19 07:43:42,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-19 07:43:42,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:42,476 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] [2023-11-19 07:43:42,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:43:42,476 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-19 07:43:42,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:42,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1500224718, now seen corresponding path program 1 times [2023-11-19 07:43:42,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:42,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036793456] [2023-11-19 07:43:42,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:42,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:42,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-19 07:43:42,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-19 07:43:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:42,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 07:43:42,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:42,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 07:43:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:42,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-19 07:43:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:42,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-19 07:43:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:42,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-19 07:43:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:42,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-19 07:43:42,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:42,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 07:43:42,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:42,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036793456] [2023-11-19 07:43:42,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036793456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:42,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:42,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:43:42,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410184313] [2023-11-19 07:43:42,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:42,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:43:42,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:42,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:43:42,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:43:42,993 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) [2023-11-19 07:43:50,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:43:59,654 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []