./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --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 d8753c57388e5055354b3fbc6056201b4b60a43a04993bc3e2112ce6b572c942 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-09 19:23:42,245 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-09 19:23:42,305 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2025-01-09 19:23:42,314 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-09 19:23:42,314 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-09 19:23:42,328 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-09 19:23:42,328 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-09 19:23:42,328 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-09 19:23:42,329 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-09 19:23:42,329 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-09 19:23:42,329 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-09 19:23:42,329 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-09 19:23:42,329 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-09 19:23:42,329 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-09 19:23:42,329 INFO L153 SettingsManager]: * Use SBE=true [2025-01-09 19:23:42,329 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-09 19:23:42,329 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-09 19:23:42,329 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-09 19:23:42,329 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-09 19:23:42,329 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-09 19:23:42,329 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-09 19:23:42,329 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-09 19:23:42,330 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 19:23:42,330 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 19:23:42,330 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-09 19:23:42,330 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-09 19:23:42,331 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-09 19:23:42,331 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-09 19:23:42,331 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-09 19:23:42,331 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux 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 -> d8753c57388e5055354b3fbc6056201b4b60a43a04993bc3e2112ce6b572c942 [2025-01-09 19:23:42,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-09 19:23:42,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-09 19:23:42,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-09 19:23:42,511 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-09 19:23:42,512 INFO L274 PluginConnector]: CDTParser initialized [2025-01-09 19:23:42,513 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2025-01-09 19:23:43,657 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/123b9e4e4/d481a89e327a4a1fb1529e6f904104aa/FLAG81e8f8caa [2025-01-09 19:23:44,032 INFO L384 CDTParser]: Found 1 translation units. [2025-01-09 19:23:44,032 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2025-01-09 19:23:44,063 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/123b9e4e4/d481a89e327a4a1fb1529e6f904104aa/FLAG81e8f8caa [2025-01-09 19:23:44,073 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/123b9e4e4/d481a89e327a4a1fb1529e6f904104aa [2025-01-09 19:23:44,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-09 19:23:44,076 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-09 19:23:44,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-09 19:23:44,077 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-09 19:23:44,079 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-09 19:23:44,080 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:44,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a688753 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44, skipping insertion in model container [2025-01-09 19:23:44,081 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:44,129 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-09 19:23:44,697 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2025-01-09 19:23:44,718 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 19:23:44,736 INFO L200 MainTranslator]: Completed pre-run [2025-01-09 19:23:44,805 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3278] [2025-01-09 19:23:44,806 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3281] [2025-01-09 19:23:44,806 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3284] [2025-01-09 19:23:44,806 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3287] [2025-01-09 19:23:44,807 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; incl %0": "+m" (v->counter)); [3300] [2025-01-09 19:23:44,928 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i[143316,143329] [2025-01-09 19:23:44,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-09 19:23:44,980 INFO L204 MainTranslator]: Completed translation [2025-01-09 19:23:44,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44 WrapperNode [2025-01-09 19:23:44,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-09 19:23:44,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-09 19:23:44,984 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-09 19:23:44,984 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-09 19:23:44,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:45,026 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:45,087 INFO L138 Inliner]: procedures = 141, calls = 665, calls flagged for inlining = 63, calls inlined = 60, statements flattened = 2215 [2025-01-09 19:23:45,087 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-09 19:23:45,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-09 19:23:45,087 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-09 19:23:45,087 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-09 19:23:45,094 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:45,095 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:45,118 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:45,300 INFO L175 MemorySlicer]: Split 339 memory accesses to 8 slices as follows [2, 1, 9, 292, 3, 2, 6, 24]. 86 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 0, 0, 0, 0, 0, 6, 0]. The 169 writes are split as follows [0, 0, 2, 138, 3, 2, 0, 24]. [2025-01-09 19:23:45,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:45,300 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:45,339 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:45,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:45,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:45,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:45,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:45,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-09 19:23:45,376 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-09 19:23:45,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-09 19:23:45,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-09 19:23:45,377 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44" (1/1) ... [2025-01-09 19:23:45,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-09 19:23:45,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 19:23:45,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-01-09 19:23:45,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-01-09 19:23:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2025-01-09 19:23:45,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2025-01-09 19:23:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2025-01-09 19:23:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2025-01-09 19:23:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2025-01-09 19:23:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2025-01-09 19:23:45,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2025-01-09 19:23:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2025-01-09 19:23:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2025-01-09 19:23:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#7 [2025-01-09 19:23:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2025-01-09 19:23:45,423 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2025-01-09 19:23:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#0 [2025-01-09 19:23:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#1 [2025-01-09 19:23:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#2 [2025-01-09 19:23:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#3 [2025-01-09 19:23:45,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#4 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#5 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#6 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$#7 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#6 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#7 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2025-01-09 19:23:45,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-09 19:23:45,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2025-01-09 19:23:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2025-01-09 19:23:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure retry_transmit [2025-01-09 19:23:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure retry_transmit [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#0 [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#1 [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#2 [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#3 [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#4 [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#5 [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#6 [2025-01-09 19:23:45,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy#7 [2025-01-09 19:23:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#0 [2025-01-09 19:23:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#1 [2025-01-09 19:23:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#2 [2025-01-09 19:23:45,426 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#3 [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#4 [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#5 [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#6 [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy#7 [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_close [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_close [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure remove_msg [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_msg [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_1 [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_1 [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure task_pid [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure task_pid [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unlock [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unlock [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2025-01-09 19:23:45,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2025-01-09 19:23:45,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2025-01-09 19:23:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-01-09 19:23:45,428 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-01-09 19:23:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure add_msg [2025-01-09 19:23:45,428 INFO L138 BoogieDeclarations]: Found implementation of procedure add_msg [2025-01-09 19:23:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2025-01-09 19:23:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2025-01-09 19:23:45,428 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2025-01-09 19:23:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2025-01-09 19:23:45,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2025-01-09 19:23:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2025-01-09 19:23:45,428 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2025-01-09 19:23:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_poll [2025-01-09 19:23:45,428 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_poll [2025-01-09 19:23:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-09 19:23:45,428 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_1 [2025-01-09 19:23:45,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_1 [2025-01-09 19:23:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-09 19:23:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2025-01-09 19:23:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2025-01-09 19:23:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2025-01-09 19:23:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2025-01-09 19:23:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2025-01-09 19:23:45,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#7 [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure findClient [2025-01-09 19:23:45,432 INFO L138 BoogieDeclarations]: Found implementation of procedure findClient [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure put_char [2025-01-09 19:23:45,432 INFO L138 BoogieDeclarations]: Found implementation of procedure put_char [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#7 [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2025-01-09 19:23:45,432 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure put_pid [2025-01-09 19:23:45,432 INFO L138 BoogieDeclarations]: Found implementation of procedure put_pid [2025-01-09 19:23:45,432 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2025-01-09 19:23:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure remove_client_block [2025-01-09 19:23:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_client_block [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2025-01-09 19:23:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure on_receive_block [2025-01-09 19:23:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure on_receive_block [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2025-01-09 19:23:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure flush [2025-01-09 19:23:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure flush [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_set_termios [2025-01-09 19:23:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_set_termios [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2025-01-09 19:23:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure r3964_ioctl [2025-01-09 19:23:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure r3964_ioctl [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure remove_from_tx_queue [2025-01-09 19:23:45,433 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_from_tx_queue [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-01-09 19:23:45,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-01-09 19:23:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-01-09 19:23:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure tty_lock [2025-01-09 19:23:45,434 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_lock [2025-01-09 19:23:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_transmit [2025-01-09 19:23:45,434 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_transmit [2025-01-09 19:23:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#0 [2025-01-09 19:23:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#1 [2025-01-09 19:23:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#2 [2025-01-09 19:23:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#3 [2025-01-09 19:23:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#4 [2025-01-09 19:23:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#5 [2025-01-09 19:23:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#6 [2025-01-09 19:23:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int#7 [2025-01-09 19:23:45,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-09 19:23:45,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-09 19:23:45,812 INFO L234 CfgBuilder]: Building ICFG [2025-01-09 19:23:45,814 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-09 19:23:45,896 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2025-01-09 19:23:50,520 INFO L? ?]: Removed 1031 outVars from TransFormulas that were not future-live. [2025-01-09 19:23:50,520 INFO L283 CfgBuilder]: Performing block encoding [2025-01-09 19:23:50,548 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-09 19:23:50,549 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2025-01-09 19:23:50,549 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 07:23:50 BoogieIcfgContainer [2025-01-09 19:23:50,549 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-09 19:23:50,552 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-09 19:23:50,552 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-09 19:23:50,555 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-09 19:23:50,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 07:23:44" (1/3) ... [2025-01-09 19:23:50,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a17627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 07:23:50, skipping insertion in model container [2025-01-09 19:23:50,555 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 07:23:44" (2/3) ... [2025-01-09 19:23:50,555 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a17627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 07:23:50, skipping insertion in model container [2025-01-09 19:23:50,556 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 07:23:50" (3/3) ... [2025-01-09 19:23:50,557 INFO L128 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i [2025-01-09 19:23:50,568 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-09 19:23:50,571 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--tty--n_r3964.ko-entry_point.cil.out.i that has 50 procedures, 875 locations, 1 initial locations, 18 loop locations, and 1 error locations. [2025-01-09 19:23:50,664 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-09 19:23:50,671 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@2cd10668, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-09 19:23:50,671 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-09 19:23:50,676 INFO L276 IsEmpty]: Start isEmpty. Operand has 839 states, 604 states have (on average 1.4072847682119205) internal successors, (850), 640 states have internal predecessors, (850), 192 states have call successors, (192), 42 states have call predecessors, (192), 41 states have return successors, (188), 178 states have call predecessors, (188), 188 states have call successors, (188) [2025-01-09 19:23:50,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-01-09 19:23:50,695 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 19:23:50,695 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 19:23:50,696 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 19:23:50,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 19:23:50,700 INFO L85 PathProgramCache]: Analyzing trace with hash -205435136, now seen corresponding path program 1 times [2025-01-09 19:23:50,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 19:23:50,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146777858] [2025-01-09 19:23:50,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 19:23:50,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 19:23:50,856 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-01-09 19:23:50,942 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-01-09 19:23:50,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 19:23:50,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 19:23:51,178 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2025-01-09 19:23:51,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 19:23:51,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146777858] [2025-01-09 19:23:51,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146777858] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-09 19:23:51,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304209146] [2025-01-09 19:23:51,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 19:23:51,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-09 19:23:51,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-09 19:23:51,184 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-01-09 19:23:51,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-01-09 19:23:51,495 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-01-09 19:23:51,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-01-09 19:23:51,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 19:23:51,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 19:23:51,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 1229 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-01-09 19:23:51,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-09 19:23:51,661 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 227 trivial. 0 not checked. [2025-01-09 19:23:51,661 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-01-09 19:23:51,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304209146] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 19:23:51,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-01-09 19:23:51,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-01-09 19:23:51,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411358208] [2025-01-09 19:23:51,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 19:23:51,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-01-09 19:23:51,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 19:23:51,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-01-09 19:23:51,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 19:23:51,685 INFO L87 Difference]: Start difference. First operand has 839 states, 604 states have (on average 1.4072847682119205) internal successors, (850), 640 states have internal predecessors, (850), 192 states have call successors, (192), 42 states have call predecessors, (192), 41 states have return successors, (188), 178 states have call predecessors, (188), 188 states have call successors, (188) Second operand has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-01-09 19:23:51,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 19:23:51,780 INFO L93 Difference]: Finished difference Result 1673 states and 2497 transitions. [2025-01-09 19:23:51,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-01-09 19:23:51,783 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 174 [2025-01-09 19:23:51,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 19:23:51,802 INFO L225 Difference]: With dead ends: 1673 [2025-01-09 19:23:51,803 INFO L226 Difference]: Without dead ends: 822 [2025-01-09 19:23:51,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-01-09 19:23:51,811 INFO L435 NwaCegarLoop]: 1219 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-09 19:23:51,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-09 19:23:51,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2025-01-09 19:23:51,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 822. [2025-01-09 19:23:51,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 594 states have (on average 1.387205387205387) internal successors, (824), 624 states have internal predecessors, (824), 187 states have call successors, (187), 41 states have call predecessors, (187), 40 states have return successors, (186), 176 states have call predecessors, (186), 186 states have call successors, (186) [2025-01-09 19:23:51,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1197 transitions. [2025-01-09 19:23:51,882 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1197 transitions. Word has length 174 [2025-01-09 19:23:51,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 19:23:51,884 INFO L471 AbstractCegarLoop]: Abstraction has 822 states and 1197 transitions. [2025-01-09 19:23:51,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.5) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2025-01-09 19:23:51,884 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1197 transitions. [2025-01-09 19:23:51,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2025-01-09 19:23:51,886 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 19:23:51,887 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 19:23:51,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-09 19:23:52,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-01-09 19:23:52,090 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 19:23:52,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 19:23:52,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1866130932, now seen corresponding path program 1 times [2025-01-09 19:23:52,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 19:23:52,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431446365] [2025-01-09 19:23:52,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 19:23:52,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 19:23:52,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 174 statements into 1 equivalence classes. [2025-01-09 19:23:52,235 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 174 of 174 statements. [2025-01-09 19:23:52,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 19:23:52,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 19:23:52,414 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2025-01-09 19:23:52,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 19:23:52,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431446365] [2025-01-09 19:23:52,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431446365] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 19:23:52,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 19:23:52,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-09 19:23:52,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670163959] [2025-01-09 19:23:52,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 19:23:52,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-09 19:23:52,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 19:23:52,419 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-09 19:23:52,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 19:23:52,419 INFO L87 Difference]: Start difference. First operand 822 states and 1197 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-01-09 19:23:52,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 19:23:52,541 INFO L93 Difference]: Finished difference Result 1912 states and 2769 transitions. [2025-01-09 19:23:52,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-09 19:23:52,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 174 [2025-01-09 19:23:52,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 19:23:52,548 INFO L225 Difference]: With dead ends: 1912 [2025-01-09 19:23:52,549 INFO L226 Difference]: Without dead ends: 1129 [2025-01-09 19:23:52,551 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-09 19:23:52,552 INFO L435 NwaCegarLoop]: 1257 mSDtfsCounter, 475 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 2364 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-09 19:23:52,552 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 2364 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-09 19:23:52,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1129 states. [2025-01-09 19:23:52,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1129 to 1126. [2025-01-09 19:23:52,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 806 states have (on average 1.3870967741935485) internal successors, (1118), 853 states have internal predecessors, (1118), 253 states have call successors, (253), 67 states have call predecessors, (253), 66 states have return successors, (252), 237 states have call predecessors, (252), 252 states have call successors, (252) [2025-01-09 19:23:52,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1623 transitions. [2025-01-09 19:23:52,632 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1623 transitions. Word has length 174 [2025-01-09 19:23:52,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 19:23:52,634 INFO L471 AbstractCegarLoop]: Abstraction has 1126 states and 1623 transitions. [2025-01-09 19:23:52,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-01-09 19:23:52,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1623 transitions. [2025-01-09 19:23:52,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2025-01-09 19:23:52,637 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 19:23:52,637 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 19:23:52,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-01-09 19:23:52,638 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 19:23:52,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 19:23:52,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1926230435, now seen corresponding path program 1 times [2025-01-09 19:23:52,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 19:23:52,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040909534] [2025-01-09 19:23:52,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 19:23:52,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 19:23:52,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 184 statements into 1 equivalence classes. [2025-01-09 19:23:52,727 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 184 of 184 statements. [2025-01-09 19:23:52,728 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 19:23:52,728 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 19:23:52,933 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2025-01-09 19:23:52,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 19:23:52,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040909534] [2025-01-09 19:23:52,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040909534] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 19:23:52,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 19:23:52,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 19:23:52,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066650062] [2025-01-09 19:23:52,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 19:23:52,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 19:23:52,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 19:23:52,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 19:23:52,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 19:23:52,935 INFO L87 Difference]: Start difference. First operand 1126 states and 1623 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-01-09 19:23:54,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-09 19:23:55,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 19:23:55,735 INFO L93 Difference]: Finished difference Result 5408 states and 8178 transitions. [2025-01-09 19:23:55,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 19:23:55,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 184 [2025-01-09 19:23:55,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 19:23:55,759 INFO L225 Difference]: With dead ends: 5408 [2025-01-09 19:23:55,759 INFO L226 Difference]: Without dead ends: 4331 [2025-01-09 19:23:55,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 19:23:55,767 INFO L435 NwaCegarLoop]: 1377 mSDtfsCounter, 4197 mSDsluCounter, 3861 mSDsCounter, 0 mSdLazyCounter, 778 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4197 SdHoareTripleChecker+Valid, 5238 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 778 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2025-01-09 19:23:55,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4197 Valid, 5238 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 778 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2025-01-09 19:23:55,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4331 states. [2025-01-09 19:23:55,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4331 to 4315. [2025-01-09 19:23:55,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4315 states, 3114 states have (on average 1.390815671162492) internal successors, (4331), 3291 states have internal predecessors, (4331), 949 states have call successors, (949), 254 states have call predecessors, (949), 251 states have return successors, (1151), 891 states have call predecessors, (1151), 948 states have call successors, (1151) [2025-01-09 19:23:55,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4315 states to 4315 states and 6431 transitions. [2025-01-09 19:23:55,961 INFO L78 Accepts]: Start accepts. Automaton has 4315 states and 6431 transitions. Word has length 184 [2025-01-09 19:23:55,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 19:23:55,962 INFO L471 AbstractCegarLoop]: Abstraction has 4315 states and 6431 transitions. [2025-01-09 19:23:55,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-01-09 19:23:55,962 INFO L276 IsEmpty]: Start isEmpty. Operand 4315 states and 6431 transitions. [2025-01-09 19:23:55,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2025-01-09 19:23:55,964 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 19:23:55,964 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 19:23:55,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-01-09 19:23:55,964 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 19:23:55,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 19:23:55,964 INFO L85 PathProgramCache]: Analyzing trace with hash 474115636, now seen corresponding path program 1 times [2025-01-09 19:23:55,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 19:23:55,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594509912] [2025-01-09 19:23:55,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 19:23:55,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 19:23:56,022 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 185 statements into 1 equivalence classes. [2025-01-09 19:23:56,050 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 185 of 185 statements. [2025-01-09 19:23:56,051 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 19:23:56,051 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 19:23:56,257 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2025-01-09 19:23:56,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 19:23:56,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594509912] [2025-01-09 19:23:56,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594509912] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 19:23:56,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 19:23:56,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 19:23:56,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785753259] [2025-01-09 19:23:56,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 19:23:56,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 19:23:56,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 19:23:56,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 19:23:56,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 19:23:56,259 INFO L87 Difference]: Start difference. First operand 4315 states and 6431 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-01-09 19:23:59,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 19:23:59,224 INFO L93 Difference]: Finished difference Result 21331 states and 33815 transitions. [2025-01-09 19:23:59,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 19:23:59,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 185 [2025-01-09 19:23:59,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 19:23:59,328 INFO L225 Difference]: With dead ends: 21331 [2025-01-09 19:23:59,328 INFO L226 Difference]: Without dead ends: 17065 [2025-01-09 19:23:59,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 19:23:59,356 INFO L435 NwaCegarLoop]: 1224 mSDtfsCounter, 4256 mSDsluCounter, 3853 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4256 SdHoareTripleChecker+Valid, 5077 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2025-01-09 19:23:59,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4256 Valid, 5077 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 771 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2025-01-09 19:23:59,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17065 states. [2025-01-09 19:23:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17065 to 17052. [2025-01-09 19:24:00,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17052 states, 12342 states have (on average 1.388510776211311) internal successors, (17137), 13022 states have internal predecessors, (17137), 3718 states have call successors, (3718), 1004 states have call predecessors, (3718), 991 states have return successors, (5609), 3507 states have call predecessors, (5609), 3717 states have call successors, (5609) [2025-01-09 19:24:00,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17052 states to 17052 states and 26464 transitions. [2025-01-09 19:24:00,127 INFO L78 Accepts]: Start accepts. Automaton has 17052 states and 26464 transitions. Word has length 185 [2025-01-09 19:24:00,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 19:24:00,128 INFO L471 AbstractCegarLoop]: Abstraction has 17052 states and 26464 transitions. [2025-01-09 19:24:00,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-01-09 19:24:00,129 INFO L276 IsEmpty]: Start isEmpty. Operand 17052 states and 26464 transitions. [2025-01-09 19:24:00,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2025-01-09 19:24:00,133 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 19:24:00,133 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 19:24:00,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-01-09 19:24:00,133 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 19:24:00,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 19:24:00,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1128706811, now seen corresponding path program 1 times [2025-01-09 19:24:00,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 19:24:00,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500237228] [2025-01-09 19:24:00,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 19:24:00,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 19:24:00,184 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 186 statements into 1 equivalence classes. [2025-01-09 19:24:00,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 186 of 186 statements. [2025-01-09 19:24:00,209 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 19:24:00,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 19:24:00,424 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2025-01-09 19:24:00,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 19:24:00,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500237228] [2025-01-09 19:24:00,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500237228] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 19:24:00,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 19:24:00,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 19:24:00,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907125914] [2025-01-09 19:24:00,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 19:24:00,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 19:24:00,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 19:24:00,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 19:24:00,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 19:24:00,426 INFO L87 Difference]: Start difference. First operand 17052 states and 26464 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-01-09 19:24:04,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 19:24:04,221 INFO L93 Difference]: Finished difference Result 84944 states and 142614 transitions. [2025-01-09 19:24:04,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 19:24:04,222 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 186 [2025-01-09 19:24:04,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 19:24:04,605 INFO L225 Difference]: With dead ends: 84944 [2025-01-09 19:24:04,606 INFO L226 Difference]: Without dead ends: 67941 [2025-01-09 19:24:04,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 19:24:04,718 INFO L435 NwaCegarLoop]: 1230 mSDtfsCounter, 4264 mSDsluCounter, 3856 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4264 SdHoareTripleChecker+Valid, 5086 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2025-01-09 19:24:04,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4264 Valid, 5086 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2025-01-09 19:24:04,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67941 states. [2025-01-09 19:24:07,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67941 to 67924. [2025-01-09 19:24:07,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67924 states, 49250 states have (on average 1.3851167512690354) internal successors, (68217), 51870 states have internal predecessors, (68217), 14722 states have call successors, (14722), 4004 states have call predecessors, (14722), 3951 states have return successors, (27995), 13971 states have call predecessors, (27995), 14721 states have call successors, (27995) [2025-01-09 19:24:07,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67924 states to 67924 states and 110934 transitions. [2025-01-09 19:24:07,642 INFO L78 Accepts]: Start accepts. Automaton has 67924 states and 110934 transitions. Word has length 186 [2025-01-09 19:24:07,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-09 19:24:07,643 INFO L471 AbstractCegarLoop]: Abstraction has 67924 states and 110934 transitions. [2025-01-09 19:24:07,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-01-09 19:24:07,644 INFO L276 IsEmpty]: Start isEmpty. Operand 67924 states and 110934 transitions. [2025-01-09 19:24:07,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2025-01-09 19:24:07,645 INFO L210 NwaCegarLoop]: Found error trace [2025-01-09 19:24:07,646 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-09 19:24:07,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-01-09 19:24:07,646 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-09 19:24:07,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-09 19:24:07,646 INFO L85 PathProgramCache]: Analyzing trace with hash 2019265564, now seen corresponding path program 1 times [2025-01-09 19:24:07,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-09 19:24:07,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967103667] [2025-01-09 19:24:07,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-09 19:24:07,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-09 19:24:07,721 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 187 statements into 1 equivalence classes. [2025-01-09 19:24:07,746 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 187 of 187 statements. [2025-01-09 19:24:07,747 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-09 19:24:07,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-09 19:24:07,910 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2025-01-09 19:24:07,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-09 19:24:07,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967103667] [2025-01-09 19:24:07,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967103667] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-09 19:24:07,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-09 19:24:07,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-01-09 19:24:07,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218988348] [2025-01-09 19:24:07,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-09 19:24:07,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-01-09 19:24:07,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-09 19:24:07,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-01-09 19:24:07,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 19:24:07,912 INFO L87 Difference]: Start difference. First operand 67924 states and 110934 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2025-01-09 19:24:11,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2025-01-09 19:24:19,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-09 19:24:19,941 INFO L93 Difference]: Finished difference Result 334176 states and 594653 transitions. [2025-01-09 19:24:19,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-01-09 19:24:19,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (23), 2 states have call predecessors, (23), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 187 [2025-01-09 19:24:19,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-09 19:24:21,983 INFO L225 Difference]: With dead ends: 334176 [2025-01-09 19:24:21,983 INFO L226 Difference]: Without dead ends: 266301 [2025-01-09 19:24:22,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-01-09 19:24:22,479 INFO L435 NwaCegarLoop]: 1218 mSDtfsCounter, 4365 mSDsluCounter, 3468 mSDsCounter, 0 mSdLazyCounter, 1061 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4365 SdHoareTripleChecker+Valid, 4686 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1061 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2025-01-09 19:24:22,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4365 Valid, 4686 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 1061 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2025-01-09 19:24:22,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266301 states.