./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-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 f91d2143e2aa98b5d48c7de2c4b17a3507ecfb748f26bae9be6d0588f4557bb1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 21:15:04,530 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 21:15:04,587 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-16 21:15:04,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 21:15:04,592 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 21:15:04,624 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 21:15:04,624 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 21:15:04,625 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 21:15:04,625 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 21:15:04,625 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 21:15:04,626 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 21:15:04,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 21:15:04,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 21:15:04,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 21:15:04,634 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 21:15:04,635 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 21:15:04,635 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 21:15:04,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 21:15:04,635 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 21:15:04,635 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 21:15:04,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 21:15:04,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 21:15:04,636 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 21:15:04,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 21:15:04,637 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 21:15:04,638 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 21:15:04,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 21:15:04,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 21:15:04,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 21:15:04,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 21:15:04,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 21:15:04,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 21:15:04,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 21:15:04,639 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 21:15:04,640 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 21:15:04,640 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 21:15:04,640 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 21:15:04,640 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 21:15:04,640 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 21:15:04,640 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f91d2143e2aa98b5d48c7de2c4b17a3507ecfb748f26bae9be6d0588f4557bb1 [2024-11-16 21:15:04,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 21:15:04,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 21:15:04,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 21:15:04,952 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 21:15:04,953 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 21:15:04,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-16 21:15:06,378 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 21:15:06,794 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 21:15:06,794 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-16 21:15:06,838 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c9e942f2/16c6319cc85d4aa2a2b9338677067d61/FLAGd902cceb4 [2024-11-16 21:15:06,856 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c9e942f2/16c6319cc85d4aa2a2b9338677067d61 [2024-11-16 21:15:06,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 21:15:06,862 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 21:15:06,863 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 21:15:06,863 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 21:15:06,868 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 21:15:06,869 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:15:06" (1/1) ... [2024-11-16 21:15:06,870 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42459f04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:06, skipping insertion in model container [2024-11-16 21:15:06,870 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:15:06" (1/1) ... [2024-11-16 21:15:07,022 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 21:15:07,686 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i[183784,183797] [2024-11-16 21:15:07,736 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 21:15:07,771 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 21:15:08,006 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_1": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6057] [2024-11-16 21:15:08,009 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_2": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6060] [2024-11-16 21:15:08,010 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_4": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6063] [2024-11-16 21:15:08,011 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_8": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6066] [2024-11-16 21:15:08,011 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("call __put_user_X": "=a" (__ret_pu): "0" (__pu_val), "c" ((int *)arg): "ebx"); [6069] [2024-11-16 21:15:08,025 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i[183784,183797] [2024-11-16 21:15:08,032 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 21:15:08,073 INFO L204 MainTranslator]: Completed translation [2024-11-16 21:15:08,074 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:08 WrapperNode [2024-11-16 21:15:08,074 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 21:15:08,075 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 21:15:08,076 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 21:15:08,076 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 21:15:08,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:08" (1/1) ... [2024-11-16 21:15:08,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:08" (1/1) ... [2024-11-16 21:15:08,154 INFO L138 Inliner]: procedures = 69, calls = 171, calls flagged for inlining = 23, calls inlined = 16, statements flattened = 366 [2024-11-16 21:15:08,155 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 21:15:08,156 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 21:15:08,156 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 21:15:08,156 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 21:15:08,172 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:08" (1/1) ... [2024-11-16 21:15:08,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:08" (1/1) ... [2024-11-16 21:15:08,182 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:08" (1/1) ... [2024-11-16 21:15:08,233 INFO L175 MemorySlicer]: Split 100 memory accesses to 7 slices as follows [2, 1, 4, 9, 78, 3, 3]. 78 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 0, 0, 4, 0, 0, 3]. The 81 writes are split as follows [0, 1, 2, 0, 78, 0, 0]. [2024-11-16 21:15:08,237 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:08" (1/1) ... [2024-11-16 21:15:08,238 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:08" (1/1) ... [2024-11-16 21:15:08,261 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:08" (1/1) ... [2024-11-16 21:15:08,266 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:08" (1/1) ... [2024-11-16 21:15:08,270 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:08" (1/1) ... [2024-11-16 21:15:08,277 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:08" (1/1) ... [2024-11-16 21:15:08,293 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 21:15:08,294 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 21:15:08,294 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 21:15:08,294 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 21:15:08,295 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:08" (1/1) ... [2024-11-16 21:15:08,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 21:15:08,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 21:15:08,335 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 21:15:08,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 21:15:08,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 21:15:08,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-16 21:15:08,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-16 21:15:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-16 21:15:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-16 21:15:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-16 21:15:08,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-16 21:15:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#6 [2024-11-16 21:15:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 21:15:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2024-11-16 21:15:08,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2024-11-16 21:15:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 21:15:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 21:15:08,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 21:15:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 21:15:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-16 21:15:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-16 21:15:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-16 21:15:08,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2024-11-16 21:15:08,392 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2024-11-16 21:15:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 21:15:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 21:15:08,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-16 21:15:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-16 21:15:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-16 21:15:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-16 21:15:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2024-11-16 21:15:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2024-11-16 21:15:08,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2024-11-16 21:15:08,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 21:15:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-16 21:15:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-16 21:15:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-16 21:15:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-16 21:15:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2024-11-16 21:15:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2024-11-16 21:15:08,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2024-11-16 21:15:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-16 21:15:08,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-16 21:15:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2024-11-16 21:15:08,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2024-11-16 21:15:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-16 21:15:08,395 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-16 21:15:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 21:15:08,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 21:15:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 21:15:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 21:15:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-16 21:15:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-16 21:15:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-16 21:15:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 21:15:08,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 21:15:08,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 21:15:08,397 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2024-11-16 21:15:08,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2024-11-16 21:15:08,668 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 21:15:08,671 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 21:15:08,698 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2024-11-16 21:15:13,178 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L6394: havoc sock_register_#t~nondet92#1; [2024-11-16 21:15:13,178 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L6374: havoc __request_module_#t~nondet90#1; [2024-11-16 21:15:13,179 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L6162: call ULTIMATE.dealloc(main_~#ldvarg0~0#1.base, main_~#ldvarg0~0#1.offset);havoc main_~#ldvarg0~0#1.base, main_~#ldvarg0~0#1.offset;call ULTIMATE.dealloc(main_~#ldvarg2~0#1.base, main_~#ldvarg2~0#1.offset);havoc main_~#ldvarg2~0#1.base, main_~#ldvarg2~0#1.offset; [2024-11-16 21:15:13,326 INFO L? ?]: Removed 131 outVars from TransFormulas that were not future-live. [2024-11-16 21:15:13,326 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 21:15:13,342 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 21:15:13,343 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 21:15:13,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:15:13 BoogieIcfgContainer [2024-11-16 21:15:13,343 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 21:15:13,346 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 21:15:13,347 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 21:15:13,350 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 21:15:13,350 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:15:06" (1/3) ... [2024-11-16 21:15:13,351 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669c4bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:15:13, skipping insertion in model container [2024-11-16 21:15:13,351 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:15:08" (2/3) ... [2024-11-16 21:15:13,352 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669c4bf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:15:13, skipping insertion in model container [2024-11-16 21:15:13,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:15:13" (3/3) ... [2024-11-16 21:15:13,354 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--net--ppp--pppox.ko-entry_point.cil.out.i [2024-11-16 21:15:13,371 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 21:15:13,372 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 21:15:13,445 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 21:15:13,451 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;@6ee99000, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 21:15:13,451 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 21:15:13,456 INFO L276 IsEmpty]: Start isEmpty. Operand has 96 states, 76 states have (on average 1.368421052631579) internal successors, (104), 82 states have internal predecessors, (104), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-16 21:15:13,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-16 21:15:13,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 21:15:13,468 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 21:15:13,468 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 21:15:13,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 21:15:13,477 INFO L85 PathProgramCache]: Analyzing trace with hash -54844320, now seen corresponding path program 1 times [2024-11-16 21:15:13,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 21:15:13,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527335641] [2024-11-16 21:15:13,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:15:13,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 21:15:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:15,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 21:15:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:15,129 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:15,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:15,149 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 21:15:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:15,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:15,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:15,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 21:15:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:15,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 21:15:15,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-16 21:15:15,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 21:15:15,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527335641] [2024-11-16 21:15:15,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527335641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 21:15:15,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 21:15:15,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 21:15:15,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133313372] [2024-11-16 21:15:15,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 21:15:15,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 21:15:15,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 21:15:15,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 21:15:15,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 21:15:15,339 INFO L87 Difference]: Start difference. First operand has 96 states, 76 states have (on average 1.368421052631579) internal successors, (104), 82 states have internal predecessors, (104), 12 states have call successors, (12), 7 states have call predecessors, (12), 6 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 21:15:19,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 21:15:23,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 21:15:24,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 21:15:24,659 INFO L93 Difference]: Finished difference Result 243 states and 332 transitions. [2024-11-16 21:15:24,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 21:15:24,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 62 [2024-11-16 21:15:24,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 21:15:24,674 INFO L225 Difference]: With dead ends: 243 [2024-11-16 21:15:24,675 INFO L226 Difference]: Without dead ends: 138 [2024-11-16 21:15:24,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2024-11-16 21:15:24,688 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 129 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 34 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-16 21:15:24,689 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 386 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 123 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2024-11-16 21:15:24,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-16 21:15:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 130. [2024-11-16 21:15:24,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 113 states have (on average 1.345132743362832) internal successors, (152), 114 states have internal predecessors, (152), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 21:15:24,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2024-11-16 21:15:24,749 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 62 [2024-11-16 21:15:24,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 21:15:24,750 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2024-11-16 21:15:24,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 21:15:24,751 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2024-11-16 21:15:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 21:15:24,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 21:15:24,756 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 21:15:24,756 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 21:15:24,757 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 21:15:24,757 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 21:15:24,757 INFO L85 PathProgramCache]: Analyzing trace with hash -159892363, now seen corresponding path program 1 times [2024-11-16 21:15:24,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 21:15:24,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113746944] [2024-11-16 21:15:24,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:15:24,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 21:15:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:25,582 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 21:15:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:25,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:25,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:25,657 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 21:15:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:25,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:25,680 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:25,757 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 21:15:25,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:25,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 21:15:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:25,785 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-16 21:15:25,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 21:15:25,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113746944] [2024-11-16 21:15:25,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113746944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 21:15:25,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 21:15:25,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 21:15:25,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922645285] [2024-11-16 21:15:25,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 21:15:25,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 21:15:25,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 21:15:25,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 21:15:25,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 21:15:25,790 INFO L87 Difference]: Start difference. First operand 130 states and 170 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 21:15:26,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 21:15:26,621 INFO L93 Difference]: Finished difference Result 146 states and 186 transitions. [2024-11-16 21:15:26,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 21:15:26,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 65 [2024-11-16 21:15:26,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 21:15:26,623 INFO L225 Difference]: With dead ends: 146 [2024-11-16 21:15:26,624 INFO L226 Difference]: Without dead ends: 140 [2024-11-16 21:15:26,624 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 21:15:26,625 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 163 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 21:15:26,625 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [170 Valid, 227 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 21:15:26,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-16 21:15:26,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 130. [2024-11-16 21:15:26,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 113 states have (on average 1.336283185840708) internal successors, (151), 114 states have internal predecessors, (151), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 21:15:26,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 169 transitions. [2024-11-16 21:15:26,638 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 169 transitions. Word has length 65 [2024-11-16 21:15:26,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 21:15:26,639 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 169 transitions. [2024-11-16 21:15:26,639 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 21:15:26,639 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 169 transitions. [2024-11-16 21:15:26,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-16 21:15:26,641 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 21:15:26,641 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 21:15:26,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 21:15:26,641 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 21:15:26,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 21:15:26,642 INFO L85 PathProgramCache]: Analyzing trace with hash 727611318, now seen corresponding path program 1 times [2024-11-16 21:15:26,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 21:15:26,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458112948] [2024-11-16 21:15:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:15:26,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 21:15:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:27,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 21:15:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:27,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:27,440 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:27,446 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 21:15:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:27,459 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:27,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:27,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:27,541 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 21:15:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:27,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 21:15:27,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:27,563 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-16 21:15:27,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 21:15:27,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458112948] [2024-11-16 21:15:27,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458112948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 21:15:27,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 21:15:27,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 21:15:27,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944023988] [2024-11-16 21:15:27,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 21:15:27,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 21:15:27,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 21:15:27,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 21:15:27,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 21:15:27,566 INFO L87 Difference]: Start difference. First operand 130 states and 169 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 21:15:28,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 21:15:28,345 INFO L93 Difference]: Finished difference Result 331 states and 446 transitions. [2024-11-16 21:15:28,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 21:15:28,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 65 [2024-11-16 21:15:28,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 21:15:28,351 INFO L225 Difference]: With dead ends: 331 [2024-11-16 21:15:28,354 INFO L226 Difference]: Without dead ends: 227 [2024-11-16 21:15:28,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 21:15:28,356 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 165 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 280 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 21:15:28,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 280 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 21:15:28,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2024-11-16 21:15:28,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 218. [2024-11-16 21:15:28,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 197 states have (on average 1.3604060913705585) internal successors, (268), 198 states have internal predecessors, (268), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 21:15:28,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 290 transitions. [2024-11-16 21:15:28,374 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 290 transitions. Word has length 65 [2024-11-16 21:15:28,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 21:15:28,375 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 290 transitions. [2024-11-16 21:15:28,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 21:15:28,375 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 290 transitions. [2024-11-16 21:15:28,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-16 21:15:28,376 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 21:15:28,376 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 21:15:28,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 21:15:28,377 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 21:15:28,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 21:15:28,377 INFO L85 PathProgramCache]: Analyzing trace with hash 459833188, now seen corresponding path program 1 times [2024-11-16 21:15:28,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 21:15:28,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879311395] [2024-11-16 21:15:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:15:28,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 21:15:28,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:29,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 21:15:29,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:29,062 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:29,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:29,067 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:29,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:29,072 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 21:15:29,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:29,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:29,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:29,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:29,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:29,159 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 21:15:29,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:29,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 21:15:29,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:29,179 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-16 21:15:29,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 21:15:29,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879311395] [2024-11-16 21:15:29,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879311395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 21:15:29,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 21:15:29,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 21:15:29,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100076094] [2024-11-16 21:15:29,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 21:15:29,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 21:15:29,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 21:15:29,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 21:15:29,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 21:15:29,184 INFO L87 Difference]: Start difference. First operand 218 states and 290 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 21:15:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 21:15:29,952 INFO L93 Difference]: Finished difference Result 486 states and 656 transitions. [2024-11-16 21:15:29,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 21:15:29,953 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 71 [2024-11-16 21:15:29,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 21:15:29,955 INFO L225 Difference]: With dead ends: 486 [2024-11-16 21:15:29,955 INFO L226 Difference]: Without dead ends: 298 [2024-11-16 21:15:29,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 21:15:29,958 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 124 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 21:15:29,958 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 304 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 21:15:29,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-16 21:15:29,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 286. [2024-11-16 21:15:29,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 265 states have (on average 1.3584905660377358) internal successors, (360), 266 states have internal predecessors, (360), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 21:15:29,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 382 transitions. [2024-11-16 21:15:29,997 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 382 transitions. Word has length 71 [2024-11-16 21:15:29,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 21:15:29,999 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 382 transitions. [2024-11-16 21:15:29,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 21:15:29,999 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 382 transitions. [2024-11-16 21:15:30,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-16 21:15:30,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 21:15:30,001 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 21:15:30,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 21:15:30,001 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 21:15:30,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 21:15:30,002 INFO L85 PathProgramCache]: Analyzing trace with hash -160111454, now seen corresponding path program 1 times [2024-11-16 21:15:30,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 21:15:30,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729141211] [2024-11-16 21:15:30,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:15:30,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 21:15:30,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:31,050 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 21:15:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:31,089 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:31,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:31,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:31,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 21:15:31,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:31,107 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:31,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:31,190 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 21:15:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:31,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2024-11-16 21:15:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 21:15:31,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 21:15:31,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729141211] [2024-11-16 21:15:31,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729141211] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 21:15:31,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95763020] [2024-11-16 21:15:31,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:15:31,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 21:15:31,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 21:15:31,485 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 21:15:31,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 21:15:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:40,120 INFO L255 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 21:15:40,128 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 21:15:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-16 21:15:40,337 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 21:15:40,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95763020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 21:15:40,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 21:15:40,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2024-11-16 21:15:40,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332585557] [2024-11-16 21:15:40,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 21:15:40,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-16 21:15:40,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 21:15:40,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-16 21:15:40,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-16 21:15:40,339 INFO L87 Difference]: Start difference. First operand 286 states and 382 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 21:15:40,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 21:15:40,421 INFO L93 Difference]: Finished difference Result 554 states and 746 transitions. [2024-11-16 21:15:40,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-16 21:15:40,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 84 [2024-11-16 21:15:40,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 21:15:40,424 INFO L225 Difference]: With dead ends: 554 [2024-11-16 21:15:40,424 INFO L226 Difference]: Without dead ends: 287 [2024-11-16 21:15:40,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-16 21:15:40,425 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 0 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 21:15:40,425 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 315 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 21:15:40,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-16 21:15:40,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-16 21:15:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 266 states have (on average 1.3571428571428572) internal successors, (361), 267 states have internal predecessors, (361), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 21:15:40,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 383 transitions. [2024-11-16 21:15:40,444 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 383 transitions. Word has length 84 [2024-11-16 21:15:40,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 21:15:40,445 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 383 transitions. [2024-11-16 21:15:40,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 21:15:40,445 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 383 transitions. [2024-11-16 21:15:40,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 21:15:40,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 21:15:40,453 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 21:15:40,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 21:15:40,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 21:15:40,655 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 21:15:40,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 21:15:40,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1914762774, now seen corresponding path program 1 times [2024-11-16 21:15:40,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 21:15:40,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506815266] [2024-11-16 21:15:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:15:40,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 21:15:41,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:41,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 21:15:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:41,744 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:41,752 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:41,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 21:15:41,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:41,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:41,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:41,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:41,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:41,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 21:15:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:42,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-16 21:15:42,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 21:15:42,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 21:15:42,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506815266] [2024-11-16 21:15:42,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506815266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 21:15:42,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866352434] [2024-11-16 21:15:42,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:15:42,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 21:15:42,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 21:15:42,358 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 21:15:42,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 21:15:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:43,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-16 21:15:43,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 21:15:43,816 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-16 21:15:43,817 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 21:15:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-16 21:15:44,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866352434] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 21:15:44,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 21:15:44,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 14 [2024-11-16 21:15:44,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685517819] [2024-11-16 21:15:44,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 21:15:44,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 21:15:44,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 21:15:44,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 21:15:44,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-16 21:15:44,435 INFO L87 Difference]: Start difference. First operand 287 states and 383 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-16 21:15:48,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 21:15:50,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 21:15:50,718 INFO L93 Difference]: Finished difference Result 561 states and 756 transitions. [2024-11-16 21:15:50,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 21:15:50,718 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 86 [2024-11-16 21:15:50,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 21:15:50,720 INFO L225 Difference]: With dead ends: 561 [2024-11-16 21:15:50,720 INFO L226 Difference]: Without dead ends: 290 [2024-11-16 21:15:50,721 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=111, Invalid=351, Unknown=0, NotChecked=0, Total=462 [2024-11-16 21:15:50,722 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 49 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-16 21:15:50,722 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 808 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 309 Invalid, 1 Unknown, 0 Unchecked, 5.5s Time] [2024-11-16 21:15:50,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-16 21:15:50,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2024-11-16 21:15:50,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 269 states have (on average 1.3531598513011152) internal successors, (364), 270 states have internal predecessors, (364), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 21:15:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 386 transitions. [2024-11-16 21:15:50,737 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 386 transitions. Word has length 86 [2024-11-16 21:15:50,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 21:15:50,738 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 386 transitions. [2024-11-16 21:15:50,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-16 21:15:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 386 transitions. [2024-11-16 21:15:50,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-16 21:15:50,740 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 21:15:50,741 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 21:15:50,765 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 21:15:50,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-16 21:15:50,942 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 21:15:50,942 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 21:15:50,942 INFO L85 PathProgramCache]: Analyzing trace with hash 343752226, now seen corresponding path program 2 times [2024-11-16 21:15:50,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 21:15:50,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572881425] [2024-11-16 21:15:50,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:15:50,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 21:15:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:52,424 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 21:15:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:52,498 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:52,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:52,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 21:15:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:52,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:52,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:52,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:52,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 21:15:52,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:52,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-16 21:15:52,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:52,639 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-16 21:15:52,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 21:15:52,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572881425] [2024-11-16 21:15:52,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572881425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 21:15:52,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 21:15:52,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 21:15:52,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18112118] [2024-11-16 21:15:52,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 21:15:52,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 21:15:52,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 21:15:52,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 21:15:52,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 21:15:52,642 INFO L87 Difference]: Start difference. First operand 290 states and 386 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 21:15:53,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 21:15:53,750 INFO L93 Difference]: Finished difference Result 552 states and 743 transitions. [2024-11-16 21:15:53,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 21:15:53,751 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 92 [2024-11-16 21:15:53,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 21:15:53,753 INFO L225 Difference]: With dead ends: 552 [2024-11-16 21:15:53,753 INFO L226 Difference]: Without dead ends: 296 [2024-11-16 21:15:53,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-16 21:15:53,754 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 57 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 21:15:53,754 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 422 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 21:15:53,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2024-11-16 21:15:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 296. [2024-11-16 21:15:53,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 275 states have (on average 1.3381818181818181) internal successors, (368), 276 states have internal predecessors, (368), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-16 21:15:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 390 transitions. [2024-11-16 21:15:53,768 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 390 transitions. Word has length 92 [2024-11-16 21:15:53,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 21:15:53,769 INFO L471 AbstractCegarLoop]: Abstraction has 296 states and 390 transitions. [2024-11-16 21:15:53,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 21:15:53,770 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 390 transitions. [2024-11-16 21:15:53,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-16 21:15:53,771 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 21:15:53,771 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 21:15:53,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 21:15:53,772 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 21:15:53,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 21:15:53,772 INFO L85 PathProgramCache]: Analyzing trace with hash 147238721, now seen corresponding path program 1 times [2024-11-16 21:15:53,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 21:15:53,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964307864] [2024-11-16 21:15:53,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:15:53,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 21:15:54,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:54,496 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 21:15:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:54,554 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:54,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:54,559 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:54,562 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 21:15:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:54,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:54,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:54,658 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 21:15:54,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:54,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-16 21:15:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:54,684 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-16 21:15:54,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 21:15:54,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964307864] [2024-11-16 21:15:54,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964307864] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 21:15:54,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843562286] [2024-11-16 21:15:54,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:15:54,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 21:15:54,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 21:15:54,687 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 21:15:54,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 21:15:55,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:55,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 1485 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 21:15:55,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 21:15:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-16 21:15:55,780 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 21:15:55,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [843562286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 21:15:55,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 21:15:55,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2024-11-16 21:15:55,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39020297] [2024-11-16 21:15:55,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 21:15:55,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 21:15:55,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 21:15:55,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 21:15:55,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-16 21:15:55,782 INFO L87 Difference]: Start difference. First operand 296 states and 390 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 21:15:55,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 21:15:55,832 INFO L93 Difference]: Finished difference Result 545 states and 730 transitions. [2024-11-16 21:15:55,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 21:15:55,833 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 92 [2024-11-16 21:15:55,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 21:15:55,835 INFO L225 Difference]: With dead ends: 545 [2024-11-16 21:15:55,835 INFO L226 Difference]: Without dead ends: 283 [2024-11-16 21:15:55,836 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-16 21:15:55,837 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 21:15:55,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 211 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 21:15:55,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-16 21:15:55,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 283. [2024-11-16 21:15:55,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 266 states have (on average 1.3345864661654134) internal successors, (355), 267 states have internal predecessors, (355), 10 states have call successors, (10), 7 states have call predecessors, (10), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-16 21:15:55,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 373 transitions. [2024-11-16 21:15:55,851 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 373 transitions. Word has length 92 [2024-11-16 21:15:55,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 21:15:55,852 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 373 transitions. [2024-11-16 21:15:55,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 21:15:55,852 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 373 transitions. [2024-11-16 21:15:55,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-16 21:15:55,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 21:15:55,853 INFO L215 NwaCegarLoop]: trace histogram [8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 21:15:55,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 21:15:56,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 21:15:56,054 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 21:15:56,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 21:15:56,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1306561437, now seen corresponding path program 1 times [2024-11-16 21:15:56,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 21:15:56,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924621133] [2024-11-16 21:15:56,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:15:56,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 21:15:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:56,887 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 21:15:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:56,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:56,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:56,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:56,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 21:15:56,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:56,966 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:15:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:56,970 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:15:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:57,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 21:15:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:57,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-16 21:15:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:15:57,094 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-16 21:15:57,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 21:15:57,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924621133] [2024-11-16 21:15:57,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924621133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 21:15:57,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 21:15:57,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 21:15:57,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073656069] [2024-11-16 21:15:57,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 21:15:57,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 21:15:57,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 21:15:57,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 21:15:57,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 21:15:57,097 INFO L87 Difference]: Start difference. First operand 283 states and 373 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 21:16:01,118 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 21:16:02,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 21:16:02,331 INFO L93 Difference]: Finished difference Result 426 states and 566 transitions. [2024-11-16 21:16:02,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 21:16:02,332 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 94 [2024-11-16 21:16:02,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 21:16:02,337 INFO L225 Difference]: With dead ends: 426 [2024-11-16 21:16:02,337 INFO L226 Difference]: Without dead ends: 422 [2024-11-16 21:16:02,337 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2024-11-16 21:16:02,338 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 188 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 35 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-16 21:16:02,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 499 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 115 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2024-11-16 21:16:02,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-16 21:16:02,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 414. [2024-11-16 21:16:02,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 393 states have (on average 1.3486005089058524) internal successors, (530), 394 states have internal predecessors, (530), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-16 21:16:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 554 transitions. [2024-11-16 21:16:02,359 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 554 transitions. Word has length 94 [2024-11-16 21:16:02,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 21:16:02,359 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 554 transitions. [2024-11-16 21:16:02,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-16 21:16:02,360 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 554 transitions. [2024-11-16 21:16:02,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-16 21:16:02,361 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 21:16:02,361 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 21:16:02,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 21:16:02,361 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 21:16:02,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 21:16:02,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1257147638, now seen corresponding path program 1 times [2024-11-16 21:16:02,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 21:16:02,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041382974] [2024-11-16 21:16:02,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:16:02,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 21:16:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:03,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 21:16:03,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:03,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:16:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:03,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:16:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:03,148 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 21:16:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:03,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:16:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:03,162 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:16:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:03,247 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 21:16:03,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:03,261 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-16 21:16:03,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-16 21:16:03,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 21:16:03,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041382974] [2024-11-16 21:16:03,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041382974] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 21:16:03,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 21:16:03,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 21:16:03,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597253011] [2024-11-16 21:16:03,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 21:16:03,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 21:16:03,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 21:16:03,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 21:16:03,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 21:16:03,278 INFO L87 Difference]: Start difference. First operand 414 states and 554 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 21:16:07,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 21:16:07,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 21:16:07,984 INFO L93 Difference]: Finished difference Result 687 states and 926 transitions. [2024-11-16 21:16:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 21:16:07,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 103 [2024-11-16 21:16:07,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 21:16:07,987 INFO L225 Difference]: With dead ends: 687 [2024-11-16 21:16:07,987 INFO L226 Difference]: Without dead ends: 414 [2024-11-16 21:16:07,987 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-16 21:16:07,988 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 39 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-16 21:16:07,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 354 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 106 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-11-16 21:16:07,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-16 21:16:08,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2024-11-16 21:16:08,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 393 states have (on average 1.3384223918575064) internal successors, (526), 394 states have internal predecessors, (526), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-16 21:16:08,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 550 transitions. [2024-11-16 21:16:08,007 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 550 transitions. Word has length 103 [2024-11-16 21:16:08,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 21:16:08,008 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 550 transitions. [2024-11-16 21:16:08,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 21:16:08,008 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 550 transitions. [2024-11-16 21:16:08,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-16 21:16:08,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 21:16:08,009 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 21:16:08,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 21:16:08,010 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 21:16:08,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 21:16:08,010 INFO L85 PathProgramCache]: Analyzing trace with hash -2101619509, now seen corresponding path program 1 times [2024-11-16 21:16:08,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 21:16:08,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816981536] [2024-11-16 21:16:08,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:16:08,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 21:16:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:09,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 21:16:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:09,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:16:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:09,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:16:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:09,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 21:16:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:09,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:16:09,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:09,595 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:16:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:09,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 21:16:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:09,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-16 21:16:09,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:09,733 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-16 21:16:09,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 21:16:09,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816981536] [2024-11-16 21:16:09,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816981536] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 21:16:09,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29375053] [2024-11-16 21:16:09,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:16:09,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 21:16:09,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 21:16:09,736 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 21:16:09,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 21:16:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:10,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 1463 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-16 21:16:10,787 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 21:16:11,037 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-16 21:16:11,037 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 21:16:11,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29375053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 21:16:11,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 21:16:11,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2024-11-16 21:16:11,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15986042] [2024-11-16 21:16:11,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 21:16:11,038 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 21:16:11,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 21:16:11,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 21:16:11,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-16 21:16:11,040 INFO L87 Difference]: Start difference. First operand 414 states and 550 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 21:16:11,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 21:16:11,165 INFO L93 Difference]: Finished difference Result 687 states and 918 transitions. [2024-11-16 21:16:11,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-16 21:16:11,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 103 [2024-11-16 21:16:11,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 21:16:11,168 INFO L225 Difference]: With dead ends: 687 [2024-11-16 21:16:11,169 INFO L226 Difference]: Without dead ends: 414 [2024-11-16 21:16:11,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-16 21:16:11,170 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 0 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 21:16:11,170 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 420 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 21:16:11,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-16 21:16:11,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 414. [2024-11-16 21:16:11,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 393 states have (on average 1.3282442748091603) internal successors, (522), 394 states have internal predecessors, (522), 12 states have call successors, (12), 9 states have call predecessors, (12), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-16 21:16:11,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 546 transitions. [2024-11-16 21:16:11,187 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 546 transitions. Word has length 103 [2024-11-16 21:16:11,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 21:16:11,187 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 546 transitions. [2024-11-16 21:16:11,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-16 21:16:11,188 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 546 transitions. [2024-11-16 21:16:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-16 21:16:11,189 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 21:16:11,189 INFO L215 NwaCegarLoop]: trace histogram [8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-16 21:16:11,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 21:16:11,390 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 21:16:11,391 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 21:16:11,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 21:16:11,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1413454267, now seen corresponding path program 1 times [2024-11-16 21:16:11,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 21:16:11,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27572188] [2024-11-16 21:16:11,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:16:11,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 21:16:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:16,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-16 21:16:16,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:16,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:16:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:16,241 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:16:16,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:16,245 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-16 21:16:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:16,260 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 21:16:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:16,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2024-11-16 21:16:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:16,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2024-11-16 21:16:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:16,430 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2024-11-16 21:16:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:18,233 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-16 21:16:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 21:16:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 30 proven. 18 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-16 21:16:18,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 21:16:18,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27572188] [2024-11-16 21:16:18,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27572188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 21:16:18,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562611292] [2024-11-16 21:16:18,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 21:16:18,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 21:16:18,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 21:16:18,243 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 21:16:18,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process