./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.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 b7b42d40a01333bd7cf600d1931e5c326b61c631d3a1040aaad3e0a3658ee3cf --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 20:54:49,147 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 20:54:49,225 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2024-11-16 20:54:49,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 20:54:49,231 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 20:54:49,254 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 20:54:49,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 20:54:49,255 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 20:54:49,255 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 20:54:49,256 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 20:54:49,256 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 20:54:49,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 20:54:49,257 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 20:54:49,257 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 20:54:49,258 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 20:54:49,258 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 20:54:49,259 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 20:54:49,259 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 20:54:49,259 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 20:54:49,260 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 20:54:49,260 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 20:54:49,261 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 20:54:49,261 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 20:54:49,262 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 20:54:49,262 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 20:54:49,262 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 20:54:49,263 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 20:54:49,263 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 20:54:49,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 20:54:49,264 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 20:54:49,264 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 20:54:49,265 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 20:54:49,265 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 20:54:49,265 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 20:54:49,266 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 20:54:49,266 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 20:54:49,266 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 20:54:49,266 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 20:54:49,267 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 20:54:49,267 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7b42d40a01333bd7cf600d1931e5c326b61c631d3a1040aaad3e0a3658ee3cf [2024-11-16 20:54:49,529 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 20:54:49,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 20:54:49,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 20:54:49,564 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 20:54:49,565 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 20:54:49,566 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.cil.out.i [2024-11-16 20:54:51,115 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 20:54:51,500 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 20:54:51,501 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.cil.out.i [2024-11-16 20:54:51,535 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54981542b/0732b91c9fde4eff86faf79df0434bf4/FLAG5bd235757 [2024-11-16 20:54:51,689 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54981542b/0732b91c9fde4eff86faf79df0434bf4 [2024-11-16 20:54:51,691 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 20:54:51,692 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 20:54:51,693 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 20:54:51,694 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 20:54:51,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 20:54:51,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:54:51" (1/1) ... [2024-11-16 20:54:51,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@725b5b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:51, skipping insertion in model container [2024-11-16 20:54:51,701 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 08:54:51" (1/1) ... [2024-11-16 20:54:51,767 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 20:54:52,381 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.cil.out.i[73128,73141] [2024-11-16 20:54:52,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 20:54:52,522 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 20:54:52,639 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.cil.out.i[73128,73141] [2024-11-16 20:54:52,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 20:54:52,731 INFO L204 MainTranslator]: Completed translation [2024-11-16 20:54:52,731 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:52 WrapperNode [2024-11-16 20:54:52,732 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 20:54:52,733 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 20:54:52,733 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 20:54:52,733 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 20:54:52,741 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:52" (1/1) ... [2024-11-16 20:54:52,782 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:52" (1/1) ... [2024-11-16 20:54:52,850 INFO L138 Inliner]: procedures = 100, calls = 348, calls flagged for inlining = 40, calls inlined = 32, statements flattened = 810 [2024-11-16 20:54:52,851 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 20:54:52,855 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 20:54:52,855 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 20:54:52,855 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 20:54:52,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:52" (1/1) ... [2024-11-16 20:54:52,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:52" (1/1) ... [2024-11-16 20:54:52,875 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:52" (1/1) ... [2024-11-16 20:54:52,955 INFO L175 MemorySlicer]: Split 228 memory accesses to 6 slices as follows [2, 14, 12, 65, 103, 32]. 45 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 0, 0, 0, 10, 0]. The 204 writes are split as follows [0, 2, 12, 65, 93, 32]. [2024-11-16 20:54:52,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:52" (1/1) ... [2024-11-16 20:54:52,959 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:52" (1/1) ... [2024-11-16 20:54:52,999 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:52" (1/1) ... [2024-11-16 20:54:53,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:52" (1/1) ... [2024-11-16 20:54:53,006 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:52" (1/1) ... [2024-11-16 20:54:53,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:52" (1/1) ... [2024-11-16 20:54:53,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 20:54:53,018 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 20:54:53,018 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 20:54:53,018 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 20:54:53,019 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:52" (1/1) ... [2024-11-16 20:54:53,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 20:54:53,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 20:54:53,055 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 20:54:53,058 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 20:54:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#0 [2024-11-16 20:54:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#1 [2024-11-16 20:54:53,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#2 [2024-11-16 20:54:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#3 [2024-11-16 20:54:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#4 [2024-11-16 20:54:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int#5 [2024-11-16 20:54:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_list_voltage_linear [2024-11-16 20:54:53,113 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_list_voltage_linear [2024-11-16 20:54:53,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#0 [2024-11-16 20:54:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#1 [2024-11-16 20:54:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#2 [2024-11-16 20:54:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#3 [2024-11-16 20:54:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#4 [2024-11-16 20:54:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$#5 [2024-11-16 20:54:53,114 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-16 20:54:53,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-16 20:54:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 20:54:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 20:54:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 20:54:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 20:54:53,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-16 20:54:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-16 20:54:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-16 20:54:53,116 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-16 20:54:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2024-11-16 20:54:53,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2024-11-16 20:54:53,116 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_unregister [2024-11-16 20:54:53,116 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_unregister [2024-11-16 20:54:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-16 20:54:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2024-11-16 20:54:53,117 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2024-11-16 20:54:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 20:54:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-16 20:54:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-16 20:54:53,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-16 20:54:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-16 20:54:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2024-11-16 20:54:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2024-11-16 20:54:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 20:54:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-16 20:54:53,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-16 20:54:53,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-16 20:54:53,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-16 20:54:53,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2024-11-16 20:54:53,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2024-11-16 20:54:53,119 INFO L130 BoogieDeclarations]: Found specification of procedure rdev_get_drvdata [2024-11-16 20:54:53,119 INFO L138 BoogieDeclarations]: Found implementation of procedure rdev_get_drvdata [2024-11-16 20:54:53,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 20:54:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_mtx_of_isl_pmic [2024-11-16 20:54:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_mtx_of_isl_pmic [2024-11-16 20:54:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2024-11-16 20:54:53,120 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2024-11-16 20:54:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 20:54:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 20:54:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 20:54:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 20:54:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-16 20:54:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-16 20:54:53,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_mtx_of_isl_pmic [2024-11-16 20:54:53,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_mtx_of_isl_pmic [2024-11-16 20:54:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 20:54:53,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 20:54:53,121 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2024-11-16 20:54:53,121 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2024-11-16 20:54:53,362 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 20:54:53,365 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 20:54:53,392 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3205: havoc #t~nondet122; [2024-11-16 20:54:53,422 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3201: havoc #t~ret121.base, #t~ret121.offset; [2024-11-16 20:54:53,432 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3150: havoc #t~nondet109; [2024-11-16 20:54:58,723 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L2249: havoc i2c_check_functionality_#t~bitwise40#1; [2024-11-16 20:54:58,724 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L2300: call ULTIMATE.dealloc(isl6271a_probe_~#config~0#1.base, isl6271a_probe_~#config~0#1.offset);havoc isl6271a_probe_~#config~0#1.base, isl6271a_probe_~#config~0#1.offset;call ULTIMATE.dealloc(isl6271a_probe_~#__key~0#1.base, isl6271a_probe_~#__key~0#1.offset);havoc isl6271a_probe_~#__key~0#1.base, isl6271a_probe_~#__key~0#1.offset; [2024-11-16 20:54:58,724 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3209: havoc regulator_map_voltage_linear_#t~nondet123#1; [2024-11-16 20:54:58,724 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3212: havoc regulator_register_#t~ret124#1.base, regulator_register_#t~ret124#1.offset; [2024-11-16 20:54:58,725 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3180: havoc i2c_register_driver_#t~nondet117#1; [2024-11-16 20:54:58,726 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3166: havoc dev_get_drvdata_#t~ret114#1.base, dev_get_drvdata_#t~ret114#1.offset; [2024-11-16 20:54:58,726 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3184: havoc i2c_smbus_read_byte_#t~nondet118#1; [2024-11-16 20:54:58,726 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3170: havoc dev_set_drvdata_#t~nondet115#1; [2024-11-16 20:54:58,726 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3188: havoc i2c_smbus_write_byte_#t~nondet119#1; [2024-11-16 20:54:58,726 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L3173: havoc devm_kzalloc_#t~ret116#1.base, devm_kzalloc_#t~ret116#1.offset; [2024-11-16 20:54:58,858 INFO L? ?]: Removed 263 outVars from TransFormulas that were not future-live. [2024-11-16 20:54:58,858 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 20:54:58,889 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 20:54:58,889 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 20:54:58,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:54:58 BoogieIcfgContainer [2024-11-16 20:54:58,891 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 20:54:58,893 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 20:54:58,893 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 20:54:58,897 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 20:54:58,898 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 08:54:51" (1/3) ... [2024-11-16 20:54:58,899 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2529987d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:54:58, skipping insertion in model container [2024-11-16 20:54:58,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 08:54:52" (2/3) ... [2024-11-16 20:54:58,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2529987d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 08:54:58, skipping insertion in model container [2024-11-16 20:54:58,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 08:54:58" (3/3) ... [2024-11-16 20:54:58,903 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--regulator--isl6271a-regulator.ko-main.cil.out.i [2024-11-16 20:54:58,920 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 20:54:58,921 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 20:54:59,008 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 20:54:59,017 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;@c535a52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 20:54:59,018 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 20:54:59,024 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 155 states have (on average 1.3483870967741935) internal successors, (209), 163 states have internal predecessors, (209), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-16 20:54:59,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-16 20:54:59,035 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 20:54:59,036 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 20:54:59,037 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 20:54:59,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 20:54:59,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2066553630, now seen corresponding path program 1 times [2024-11-16 20:54:59,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 20:54:59,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091111838] [2024-11-16 20:54:59,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 20:54:59,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 20:55:02,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:02,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 20:55:02,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 20:55:02,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091111838] [2024-11-16 20:55:02,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091111838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 20:55:02,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 20:55:02,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 20:55:02,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528184623] [2024-11-16 20:55:02,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 20:55:02,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 20:55:02,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 20:55:02,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 20:55:02,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 20:55:02,963 INFO L87 Difference]: Start difference. First operand has 197 states, 155 states have (on average 1.3483870967741935) internal successors, (209), 163 states have internal predecessors, (209), 29 states have call successors, (29), 11 states have call predecessors, (29), 11 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 20:55:07,025 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 20:55:07,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 20:55:07,699 INFO L93 Difference]: Finished difference Result 561 states and 785 transitions. [2024-11-16 20:55:07,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 20:55:07,704 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-16 20:55:07,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 20:55:07,718 INFO L225 Difference]: With dead ends: 561 [2024-11-16 20:55:07,719 INFO L226 Difference]: Without dead ends: 363 [2024-11-16 20:55:07,723 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 20:55:07,726 INFO L432 NwaCegarLoop]: 257 mSDtfsCounter, 226 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-16 20:55:07,727 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 499 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-11-16 20:55:07,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-16 20:55:07,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 358. [2024-11-16 20:55:07,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 285 states have (on average 1.3333333333333333) internal successors, (380), 292 states have internal predecessors, (380), 52 states have call successors, (52), 21 states have call predecessors, (52), 20 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-16 20:55:07,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 478 transitions. [2024-11-16 20:55:07,791 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 478 transitions. Word has length 16 [2024-11-16 20:55:07,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 20:55:07,792 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 478 transitions. [2024-11-16 20:55:07,792 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 20:55:07,793 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 478 transitions. [2024-11-16 20:55:07,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-16 20:55:07,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 20:55:07,797 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 20:55:07,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 20:55:07,797 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 20:55:07,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 20:55:07,798 INFO L85 PathProgramCache]: Analyzing trace with hash -532346483, now seen corresponding path program 1 times [2024-11-16 20:55:07,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 20:55:07,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323736185] [2024-11-16 20:55:07,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 20:55:07,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 20:55:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:10,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 20:55:10,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 20:55:10,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323736185] [2024-11-16 20:55:10,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323736185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 20:55:10,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 20:55:10,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 20:55:10,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043452193] [2024-11-16 20:55:10,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 20:55:10,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 20:55:10,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 20:55:10,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 20:55:10,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 20:55:10,814 INFO L87 Difference]: Start difference. First operand 358 states and 478 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 20:55:10,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 20:55:10,994 INFO L93 Difference]: Finished difference Result 382 states and 506 transitions. [2024-11-16 20:55:10,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 20:55:10,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-16 20:55:10,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 20:55:11,000 INFO L225 Difference]: With dead ends: 382 [2024-11-16 20:55:11,001 INFO L226 Difference]: Without dead ends: 370 [2024-11-16 20:55:11,001 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 20:55:11,002 INFO L432 NwaCegarLoop]: 265 mSDtfsCounter, 248 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 20:55:11,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 279 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 20:55:11,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2024-11-16 20:55:11,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 358. [2024-11-16 20:55:11,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 285 states have (on average 1.3298245614035087) internal successors, (379), 292 states have internal predecessors, (379), 52 states have call successors, (52), 21 states have call predecessors, (52), 20 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-16 20:55:11,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 477 transitions. [2024-11-16 20:55:11,042 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 477 transitions. Word has length 19 [2024-11-16 20:55:11,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 20:55:11,042 INFO L471 AbstractCegarLoop]: Abstraction has 358 states and 477 transitions. [2024-11-16 20:55:11,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 20:55:11,043 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 477 transitions. [2024-11-16 20:55:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-16 20:55:11,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 20:55:11,045 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 20:55:11,045 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 20:55:11,045 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 20:55:11,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 20:55:11,046 INFO L85 PathProgramCache]: Analyzing trace with hash 355157198, now seen corresponding path program 1 times [2024-11-16 20:55:11,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 20:55:11,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222690313] [2024-11-16 20:55:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 20:55:11,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 20:55:13,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:13,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 20:55:13,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 20:55:13,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222690313] [2024-11-16 20:55:13,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222690313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 20:55:13,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 20:55:13,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 20:55:13,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697709646] [2024-11-16 20:55:13,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 20:55:13,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 20:55:13,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 20:55:13,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 20:55:13,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 20:55:13,312 INFO L87 Difference]: Start difference. First operand 358 states and 477 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 20:55:17,348 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 20:55:17,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 20:55:17,787 INFO L93 Difference]: Finished difference Result 361 states and 479 transitions. [2024-11-16 20:55:17,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 20:55:17,788 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-16 20:55:17,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 20:55:17,790 INFO L225 Difference]: With dead ends: 361 [2024-11-16 20:55:17,791 INFO L226 Difference]: Without dead ends: 357 [2024-11-16 20:55:17,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 20:55:17,793 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 236 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-16 20:55:17,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 249 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-16 20:55:17,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2024-11-16 20:55:17,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 357. [2024-11-16 20:55:17,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 285 states have (on average 1.3263157894736841) internal successors, (378), 291 states have internal predecessors, (378), 51 states have call successors, (51), 21 states have call predecessors, (51), 20 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-16 20:55:17,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 475 transitions. [2024-11-16 20:55:17,832 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 475 transitions. Word has length 19 [2024-11-16 20:55:17,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 20:55:17,833 INFO L471 AbstractCegarLoop]: Abstraction has 357 states and 475 transitions. [2024-11-16 20:55:17,833 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 20:55:17,833 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 475 transitions. [2024-11-16 20:55:17,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-16 20:55:17,835 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 20:55:17,835 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 20:55:17,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 20:55:17,835 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 20:55:17,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 20:55:17,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1884695386, now seen corresponding path program 1 times [2024-11-16 20:55:17,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 20:55:17,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114404389] [2024-11-16 20:55:17,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 20:55:17,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 20:55:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:19,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 20:55:19,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 20:55:19,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114404389] [2024-11-16 20:55:19,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114404389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 20:55:19,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 20:55:19,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 20:55:19,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139843418] [2024-11-16 20:55:19,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 20:55:19,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 20:55:19,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 20:55:19,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 20:55:19,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 20:55:19,914 INFO L87 Difference]: Start difference. First operand 357 states and 475 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 20:55:23,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 20:55:24,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 20:55:24,404 INFO L93 Difference]: Finished difference Result 360 states and 477 transitions. [2024-11-16 20:55:24,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 20:55:24,406 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-16 20:55:24,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 20:55:24,408 INFO L225 Difference]: With dead ends: 360 [2024-11-16 20:55:24,408 INFO L226 Difference]: Without dead ends: 356 [2024-11-16 20:55:24,409 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 20:55:24,410 INFO L432 NwaCegarLoop]: 247 mSDtfsCounter, 233 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-16 20:55:24,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 247 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-16 20:55:24,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2024-11-16 20:55:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2024-11-16 20:55:24,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 285 states have (on average 1.3228070175438595) internal successors, (377), 290 states have internal predecessors, (377), 50 states have call successors, (50), 21 states have call predecessors, (50), 20 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-16 20:55:24,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 473 transitions. [2024-11-16 20:55:24,433 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 473 transitions. Word has length 20 [2024-11-16 20:55:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 20:55:24,433 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 473 transitions. [2024-11-16 20:55:24,433 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 20:55:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 473 transitions. [2024-11-16 20:55:24,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-16 20:55:24,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 20:55:24,435 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 20:55:24,435 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 20:55:24,435 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 20:55:24,436 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 20:55:24,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1694286829, now seen corresponding path program 1 times [2024-11-16 20:55:24,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 20:55:24,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26448711] [2024-11-16 20:55:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 20:55:24,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 20:55:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:26,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 20:55:26,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 20:55:26,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26448711] [2024-11-16 20:55:26,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26448711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 20:55:26,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 20:55:26,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 20:55:26,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132954438] [2024-11-16 20:55:26,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 20:55:26,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 20:55:26,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 20:55:26,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 20:55:26,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 20:55:26,584 INFO L87 Difference]: Start difference. First operand 356 states and 473 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 20:55:30,620 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 20:55:31,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 20:55:31,116 INFO L93 Difference]: Finished difference Result 368 states and 481 transitions. [2024-11-16 20:55:31,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 20:55:31,117 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-11-16 20:55:31,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 20:55:31,119 INFO L225 Difference]: With dead ends: 368 [2024-11-16 20:55:31,119 INFO L226 Difference]: Without dead ends: 363 [2024-11-16 20:55:31,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 20:55:31,121 INFO L432 NwaCegarLoop]: 244 mSDtfsCounter, 195 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-16 20:55:31,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [195 Valid, 277 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-16 20:55:31,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2024-11-16 20:55:31,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 360. [2024-11-16 20:55:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 289 states have (on average 1.3079584775086506) internal successors, (378), 292 states have internal predecessors, (378), 48 states have call successors, (48), 23 states have call predecessors, (48), 22 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-16 20:55:31,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 472 transitions. [2024-11-16 20:55:31,139 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 472 transitions. Word has length 21 [2024-11-16 20:55:31,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 20:55:31,139 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 472 transitions. [2024-11-16 20:55:31,139 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 20:55:31,139 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 472 transitions. [2024-11-16 20:55:31,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-16 20:55:31,141 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 20:55:31,141 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 20:55:31,141 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 20:55:31,141 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 20:55:31,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 20:55:31,142 INFO L85 PathProgramCache]: Analyzing trace with hash 973554085, now seen corresponding path program 1 times [2024-11-16 20:55:31,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 20:55:31,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311507169] [2024-11-16 20:55:31,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 20:55:31,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 20:55:32,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:33,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 20:55:33,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 20:55:33,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311507169] [2024-11-16 20:55:33,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311507169] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 20:55:33,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 20:55:33,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 20:55:33,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025321505] [2024-11-16 20:55:33,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 20:55:33,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 20:55:33,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 20:55:33,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 20:55:33,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 20:55:33,012 INFO L87 Difference]: Start difference. First operand 360 states and 472 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 20:55:37,047 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 20:55:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 20:55:37,542 INFO L93 Difference]: Finished difference Result 363 states and 474 transitions. [2024-11-16 20:55:37,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 20:55:37,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-16 20:55:37,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 20:55:37,548 INFO L225 Difference]: With dead ends: 363 [2024-11-16 20:55:37,550 INFO L226 Difference]: Without dead ends: 352 [2024-11-16 20:55:37,551 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 20:55:37,552 INFO L432 NwaCegarLoop]: 242 mSDtfsCounter, 225 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-16 20:55:37,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 242 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-16 20:55:37,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2024-11-16 20:55:37,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 352. [2024-11-16 20:55:37,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 282 states have (on average 1.3085106382978724) internal successors, (369), 284 states have internal predecessors, (369), 47 states have call successors, (47), 23 states have call predecessors, (47), 22 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-16 20:55:37,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 462 transitions. [2024-11-16 20:55:37,574 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 462 transitions. Word has length 22 [2024-11-16 20:55:37,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 20:55:37,574 INFO L471 AbstractCegarLoop]: Abstraction has 352 states and 462 transitions. [2024-11-16 20:55:37,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 20:55:37,575 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 462 transitions. [2024-11-16 20:55:37,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-16 20:55:37,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 20:55:37,577 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 20:55:37,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 20:55:37,577 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 20:55:37,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 20:55:37,578 INFO L85 PathProgramCache]: Analyzing trace with hash 964624240, now seen corresponding path program 1 times [2024-11-16 20:55:37,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 20:55:37,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295058893] [2024-11-16 20:55:37,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 20:55:37,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 20:55:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:39,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 20:55:39,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:39,664 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 20:55:39,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:39,787 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-16 20:55:39,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:39,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 20:55:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:39,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 20:55:39,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 20:55:39,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295058893] [2024-11-16 20:55:39,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295058893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 20:55:39,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 20:55:39,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 20:55:39,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112819574] [2024-11-16 20:55:39,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 20:55:39,808 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 20:55:39,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 20:55:39,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 20:55:39,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 20:55:39,809 INFO L87 Difference]: Start difference. First operand 352 states and 462 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 20:55:43,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 20:55:48,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 20:55:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 20:55:51,231 INFO L93 Difference]: Finished difference Result 927 states and 1230 transitions. [2024-11-16 20:55:51,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 20:55:51,232 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 43 [2024-11-16 20:55:51,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 20:55:51,237 INFO L225 Difference]: With dead ends: 927 [2024-11-16 20:55:51,237 INFO L226 Difference]: Without dead ends: 578 [2024-11-16 20:55:51,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-16 20:55:51,239 INFO L432 NwaCegarLoop]: 197 mSDtfsCounter, 220 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 72 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2024-11-16 20:55:51,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 655 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 183 Invalid, 2 Unknown, 0 Unchecked, 11.1s Time] [2024-11-16 20:55:51,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2024-11-16 20:55:51,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 564. [2024-11-16 20:55:51,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 466 states have (on average 1.3175965665236051) internal successors, (614), 470 states have internal predecessors, (614), 65 states have call successors, (65), 33 states have call predecessors, (65), 32 states have return successors, (64), 64 states have call predecessors, (64), 64 states have call successors, (64) [2024-11-16 20:55:51,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 743 transitions. [2024-11-16 20:55:51,271 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 743 transitions. Word has length 43 [2024-11-16 20:55:51,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 20:55:51,271 INFO L471 AbstractCegarLoop]: Abstraction has 564 states and 743 transitions. [2024-11-16 20:55:51,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 20:55:51,272 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 743 transitions. [2024-11-16 20:55:51,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-16 20:55:51,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 20:55:51,274 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:51,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 20:55:51,274 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 20:55:51,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 20:55:51,275 INFO L85 PathProgramCache]: Analyzing trace with hash 675965414, now seen corresponding path program 1 times [2024-11-16 20:55:51,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 20:55:51,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223648384] [2024-11-16 20:55:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 20:55:51,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 20:55:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:53,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 20:55:53,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:53,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 20:55:53,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:53,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-16 20:55:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:53,569 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-16 20:55:53,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 20:55:53,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 20:55:53,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 20:55:53,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223648384] [2024-11-16 20:55:53,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223648384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 20:55:53,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 20:55:53,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 20:55:53,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84425527] [2024-11-16 20:55:53,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 20:55:53,575 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-16 20:55:53,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 20:55:53,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-16 20:55:53,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-16 20:55:53,576 INFO L87 Difference]: Start difference. First operand 564 states and 743 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 20:55:57,604 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 20:56:01,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 20:56:06,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.38s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-16 20:56:09,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 20:56:09,287 INFO L93 Difference]: Finished difference Result 578 states and 769 transitions. [2024-11-16 20:56:09,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 20:56:09,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2024-11-16 20:56:09,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 20:56:09,289 INFO L225 Difference]: With dead ends: 578 [2024-11-16 20:56:09,289 INFO L226 Difference]: Without dead ends: 0 [2024-11-16 20:56:09,290 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-16 20:56:09,291 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 80 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 46 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.3s IncrementalHoareTripleChecker+Time [2024-11-16 20:56:09,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 643 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 149 Invalid, 3 Unknown, 0 Unchecked, 15.3s Time] [2024-11-16 20:56:09,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-16 20:56:09,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-16 20:56:09,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 20:56:09,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-16 20:56:09,293 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2024-11-16 20:56:09,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 20:56:09,293 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-16 20:56:09,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (6), 5 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-16 20:56:09,293 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-16 20:56:09,293 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-16 20:56:09,297 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-16 20:56:09,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 20:56:09,301 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 20:56:09,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.