./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --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 20e4a1f568783894f17840aa5f338f3fb65a6686c2b0eb1bb7dec08049ab8d00 --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 18:04:40,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 18:04:40,258 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 18:04:40,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 18:04:40,283 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 18:04:40,284 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 18:04:40,285 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 18:04:40,300 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 18:04:40,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 18:04:40,302 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 18:04:40,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 18:04:40,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 18:04:40,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 18:04:40,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 18:04:40,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 18:04:40,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 18:04:40,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 18:04:40,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 18:04:40,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 18:04:40,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 18:04:40,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 18:04:40,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 18:04:40,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 18:04:40,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 18:04:40,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 18:04:40,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 18:04:40,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 18:04:40,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 18:04:40,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 18:04:40,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 18:04:40,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 18:04:40,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 18:04:40,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 18:04:40,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 18:04:40,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 18:04:40,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 18:04:40,327 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 18:04:40,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 18:04:40,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 18:04:40,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 18:04:40,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 18:04:40,331 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 18:04:40,358 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 18:04:40,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 18:04:40,359 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 18:04:40,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 18:04:40,360 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 18:04:40,360 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 18:04:40,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 18:04:40,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 18:04:40,366 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 18:04:40,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 18:04:40,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 18:04:40,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 18:04:40,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 18:04:40,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 18:04:40,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 18:04:40,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 18:04:40,368 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 18:04:40,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 18:04:40,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 18:04:40,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 18:04:40,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 18:04:40,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:04:40,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 18:04:40,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 18:04:40,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 18:04:40,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 18:04:40,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 18:04:40,371 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 18:04:40,371 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 18:04:40,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 18:04:40,371 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 18:04:40,371 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20e4a1f568783894f17840aa5f338f3fb65a6686c2b0eb1bb7dec08049ab8d00 [2021-12-14 18:04:40,610 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 18:04:40,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 18:04:40,632 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 18:04:40,633 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 18:04:40,633 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 18:04:40,634 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-12-14 18:04:40,689 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55724933b/3d56d9811d0044669b53c0364a687f7b/FLAG24ec0e7db [2021-12-14 18:04:41,252 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 18:04:41,253 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-12-14 18:04:41,287 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55724933b/3d56d9811d0044669b53c0364a687f7b/FLAG24ec0e7db [2021-12-14 18:04:41,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55724933b/3d56d9811d0044669b53c0364a687f7b [2021-12-14 18:04:41,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 18:04:41,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 18:04:41,462 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 18:04:41,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 18:04:41,465 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 18:04:41,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:04:41" (1/1) ... [2021-12-14 18:04:41,467 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3917f34c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:41, skipping insertion in model container [2021-12-14 18:04:41,467 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:04:41" (1/1) ... [2021-12-14 18:04:41,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 18:04:41,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 18:04:42,326 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2021-12-14 18:04:42,377 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:04:42,417 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 18:04:42,585 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i[175998,176011] [2021-12-14 18:04:42,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 18:04:42,696 INFO L208 MainTranslator]: Completed translation [2021-12-14 18:04:42,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:42 WrapperNode [2021-12-14 18:04:42,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 18:04:42,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 18:04:42,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 18:04:42,699 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 18:04:42,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:42" (1/1) ... [2021-12-14 18:04:42,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:42" (1/1) ... [2021-12-14 18:04:42,859 INFO L137 Inliner]: procedures = 199, calls = 2183, calls flagged for inlining = 73, calls inlined = 51, statements flattened = 3134 [2021-12-14 18:04:42,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 18:04:42,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 18:04:42,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 18:04:42,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 18:04:42,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:42" (1/1) ... [2021-12-14 18:04:42,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:42" (1/1) ... [2021-12-14 18:04:42,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:42" (1/1) ... [2021-12-14 18:04:42,885 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:42" (1/1) ... [2021-12-14 18:04:42,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:42" (1/1) ... [2021-12-14 18:04:42,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:42" (1/1) ... [2021-12-14 18:04:42,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:42" (1/1) ... [2021-12-14 18:04:43,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 18:04:43,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 18:04:43,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 18:04:43,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 18:04:43,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:42" (1/1) ... [2021-12-14 18:04:43,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 18:04:43,037 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 18:04:43,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 18:04:43,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 18:04:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-14 18:04:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-14 18:04:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2021-12-14 18:04:43,094 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2021-12-14 18:04:43,094 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-14 18:04:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 18:04:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 18:04:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-14 18:04:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-14 18:04:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 18:04:43,095 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 18:04:43,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 18:04:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 18:04:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru_data [2021-12-14 18:04:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru_data [2021-12-14 18:04:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 18:04:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 18:04:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 18:04:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 18:04:43,096 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-14 18:04:43,096 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-14 18:04:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 18:04:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 18:04:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_resume [2021-12-14 18:04:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_resume [2021-12-14 18:04:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 18:04:43,097 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 18:04:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 18:04:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 18:04:43,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-14 18:04:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-14 18:04:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 18:04:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 18:04:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru_data [2021-12-14 18:04:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru_data [2021-12-14 18:04:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-14 18:04:43,098 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-14 18:04:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_send_address [2021-12-14 18:04:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_send_address [2021-12-14 18:04:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-14 18:04:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-14 18:04:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 18:04:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_wait [2021-12-14 18:04:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_wait [2021-12-14 18:04:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_remove [2021-12-14 18:04:43,099 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_remove [2021-12-14 18:04:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 18:04:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 18:04:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 18:04:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-14 18:04:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-14 18:04:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 18:04:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2021-12-14 18:04:43,100 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2021-12-14 18:04:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 18:04:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_write [2021-12-14 18:04:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_write [2021-12-14 18:04:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 18:04:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_ready [2021-12-14 18:04:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_ready [2021-12-14 18:04:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 18:04:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_suspend [2021-12-14 18:04:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_suspend [2021-12-14 18:04:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_read [2021-12-14 18:04:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_read [2021-12-14 18:04:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru_probe [2021-12-14 18:04:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru_probe [2021-12-14 18:04:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-14 18:04:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-14 18:04:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2021-12-14 18:04:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2021-12-14 18:04:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 18:04:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-14 18:04:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-14 18:04:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 18:04:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 18:04:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 18:04:43,103 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 18:04:43,429 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 18:04:43,431 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 18:04:51,641 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 18:04:52,615 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 18:04:52,631 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 18:04:52,632 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 18:04:52,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:04:52 BoogieIcfgContainer [2021-12-14 18:04:52,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 18:04:52,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 18:04:52,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 18:04:52,639 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 18:04:52,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:04:41" (1/3) ... [2021-12-14 18:04:52,640 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2921954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:04:52, skipping insertion in model container [2021-12-14 18:04:52,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:04:42" (2/3) ... [2021-12-14 18:04:52,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2921954 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:04:52, skipping insertion in model container [2021-12-14 18:04:52,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:04:52" (3/3) ... [2021-12-14 18:04:52,642 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru.ko-entry_point.cil.out.i [2021-12-14 18:04:52,646 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 18:04:52,646 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 18:04:52,690 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 18:04:52,695 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 18:04:52,696 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 18:04:52,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 751 states, 578 states have (on average 1.4792387543252594) internal successors, (855), 592 states have internal predecessors, (855), 140 states have call successors, (140), 32 states have call predecessors, (140), 31 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2021-12-14 18:04:52,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-14 18:04:52,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:52,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:04:52,750 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:52,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:52,754 INFO L85 PathProgramCache]: Analyzing trace with hash 392482652, now seen corresponding path program 1 times [2021-12-14 18:04:52,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:52,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123082603] [2021-12-14 18:04:52,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:52,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:53,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 18:04:53,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:53,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 18:04:53,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:53,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123082603] [2021-12-14 18:04:53,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123082603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:53,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:53,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 18:04:53,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285341016] [2021-12-14 18:04:53,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:53,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 18:04:53,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:53,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 18:04:53,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 18:04:53,215 INFO L87 Difference]: Start difference. First operand has 751 states, 578 states have (on average 1.4792387543252594) internal successors, (855), 592 states have internal predecessors, (855), 140 states have call successors, (140), 32 states have call predecessors, (140), 31 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 18:04:53,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:53,586 INFO L93 Difference]: Finished difference Result 2181 states and 3329 transitions. [2021-12-14 18:04:53,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 18:04:53,588 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2021-12-14 18:04:53,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:53,610 INFO L225 Difference]: With dead ends: 2181 [2021-12-14 18:04:53,611 INFO L226 Difference]: Without dead ends: 1419 [2021-12-14 18:04:53,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 18:04:53,627 INFO L933 BasicCegarLoop]: 1253 mSDtfsCounter, 1087 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2303 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:53,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1087 Valid, 2303 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 18:04:53,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2021-12-14 18:04:53,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 1415. [2021-12-14 18:04:53,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1415 states, 1096 states have (on average 1.4753649635036497) internal successors, (1617), 1108 states have internal predecessors, (1617), 258 states have call successors, (258), 61 states have call predecessors, (258), 60 states have return successors, (253), 253 states have call predecessors, (253), 253 states have call successors, (253) [2021-12-14 18:04:53,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1415 states to 1415 states and 2128 transitions. [2021-12-14 18:04:53,777 INFO L78 Accepts]: Start accepts. Automaton has 1415 states and 2128 transitions. Word has length 21 [2021-12-14 18:04:53,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:53,777 INFO L470 AbstractCegarLoop]: Abstraction has 1415 states and 2128 transitions. [2021-12-14 18:04:53,777 INFO L471 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, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 18:04:53,777 INFO L276 IsEmpty]: Start isEmpty. Operand 1415 states and 2128 transitions. [2021-12-14 18:04:53,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-14 18:04:53,784 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:53,784 INFO L514 BasicCegarLoop]: 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] [2021-12-14 18:04:53,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 18:04:53,786 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:53,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:53,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1015935201, now seen corresponding path program 1 times [2021-12-14 18:04:53,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:53,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987513770] [2021-12-14 18:04:53,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:53,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:53,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:53,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 18:04:53,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 18:04:53,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:53,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987513770] [2021-12-14 18:04:53,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987513770] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:53,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:53,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 18:04:53,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454889577] [2021-12-14 18:04:53,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:53,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 18:04:53,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:54,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 18:04:54,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 18:04:54,001 INFO L87 Difference]: Start difference. First operand 1415 states and 2128 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 18:04:54,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:54,225 INFO L93 Difference]: Finished difference Result 3978 states and 5978 transitions. [2021-12-14 18:04:54,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 18:04:54,226 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2021-12-14 18:04:54,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:54,243 INFO L225 Difference]: With dead ends: 3978 [2021-12-14 18:04:54,243 INFO L226 Difference]: Without dead ends: 2566 [2021-12-14 18:04:54,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 18:04:54,267 INFO L933 BasicCegarLoop]: 1244 mSDtfsCounter, 904 mSDsluCounter, 1044 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 904 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:54,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [904 Valid, 2288 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 18:04:54,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2021-12-14 18:04:54,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2549. [2021-12-14 18:04:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2549 states, 1962 states have (on average 1.4658511722731906) internal successors, (2876), 1982 states have internal predecessors, (2876), 481 states have call successors, (481), 106 states have call predecessors, (481), 105 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2021-12-14 18:04:54,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2549 states to 2549 states and 3833 transitions. [2021-12-14 18:04:54,364 INFO L78 Accepts]: Start accepts. Automaton has 2549 states and 3833 transitions. Word has length 24 [2021-12-14 18:04:54,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:54,364 INFO L470 AbstractCegarLoop]: Abstraction has 2549 states and 3833 transitions. [2021-12-14 18:04:54,365 INFO L471 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, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 18:04:54,365 INFO L276 IsEmpty]: Start isEmpty. Operand 2549 states and 3833 transitions. [2021-12-14 18:04:54,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-14 18:04:54,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:54,367 INFO L514 BasicCegarLoop]: 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] [2021-12-14 18:04:54,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 18:04:54,368 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:54,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:54,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2094049435, now seen corresponding path program 1 times [2021-12-14 18:04:54,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:54,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104926580] [2021-12-14 18:04:54,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:54,375 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:54,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:54,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 18:04:54,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:54,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 18:04:54,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:54,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104926580] [2021-12-14 18:04:54,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104926580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:54,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:54,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 18:04:54,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028896887] [2021-12-14 18:04:54,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:54,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 18:04:54,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:54,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 18:04:54,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 18:04:54,594 INFO L87 Difference]: Start difference. First operand 2549 states and 3833 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 18:04:56,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:56,500 INFO L93 Difference]: Finished difference Result 2559 states and 3854 transitions. [2021-12-14 18:04:56,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 18:04:56,500 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2021-12-14 18:04:56,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:56,512 INFO L225 Difference]: With dead ends: 2559 [2021-12-14 18:04:56,512 INFO L226 Difference]: Without dead ends: 2556 [2021-12-14 18:04:56,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:04:56,514 INFO L933 BasicCegarLoop]: 1086 mSDtfsCounter, 1064 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1803 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:56,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1158 Valid, 1803 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-14 18:04:56,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2021-12-14 18:04:56,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2548. [2021-12-14 18:04:56,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2548 states, 1962 states have (on average 1.4653414882772682) internal successors, (2875), 1981 states have internal predecessors, (2875), 480 states have call successors, (480), 106 states have call predecessors, (480), 105 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2021-12-14 18:04:56,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2548 states to 2548 states and 3831 transitions. [2021-12-14 18:04:56,587 INFO L78 Accepts]: Start accepts. Automaton has 2548 states and 3831 transitions. Word has length 25 [2021-12-14 18:04:56,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:56,587 INFO L470 AbstractCegarLoop]: Abstraction has 2548 states and 3831 transitions. [2021-12-14 18:04:56,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 18:04:56,589 INFO L276 IsEmpty]: Start isEmpty. Operand 2548 states and 3831 transitions. [2021-12-14 18:04:56,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-14 18:04:56,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:56,589 INFO L514 BasicCegarLoop]: 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] [2021-12-14 18:04:56,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 18:04:56,591 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:56,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:56,592 INFO L85 PathProgramCache]: Analyzing trace with hash -491175993, now seen corresponding path program 1 times [2021-12-14 18:04:56,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:56,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048660850] [2021-12-14 18:04:56,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:56,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:56,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 18:04:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:56,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 18:04:56,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:56,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048660850] [2021-12-14 18:04:56,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048660850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:56,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:56,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 18:04:56,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257514956] [2021-12-14 18:04:56,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:56,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 18:04:56,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:56,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 18:04:56,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 18:04:56,742 INFO L87 Difference]: Start difference. First operand 2548 states and 3831 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 18:04:58,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:04:58,358 INFO L93 Difference]: Finished difference Result 2558 states and 3852 transitions. [2021-12-14 18:04:58,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 18:04:58,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 26 [2021-12-14 18:04:58,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:04:58,370 INFO L225 Difference]: With dead ends: 2558 [2021-12-14 18:04:58,371 INFO L226 Difference]: Without dead ends: 2555 [2021-12-14 18:04:58,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:04:58,373 INFO L933 BasicCegarLoop]: 1084 mSDtfsCounter, 1061 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-14 18:04:58,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1155 Valid, 1800 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-14 18:04:58,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2555 states. [2021-12-14 18:04:58,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2555 to 2547. [2021-12-14 18:04:58,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2547 states, 1962 states have (on average 1.4648318042813455) internal successors, (2874), 1980 states have internal predecessors, (2874), 479 states have call successors, (479), 106 states have call predecessors, (479), 105 states have return successors, (476), 476 states have call predecessors, (476), 476 states have call successors, (476) [2021-12-14 18:04:58,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2547 states to 2547 states and 3829 transitions. [2021-12-14 18:04:58,463 INFO L78 Accepts]: Start accepts. Automaton has 2547 states and 3829 transitions. Word has length 26 [2021-12-14 18:04:58,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:04:58,463 INFO L470 AbstractCegarLoop]: Abstraction has 2547 states and 3829 transitions. [2021-12-14 18:04:58,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 18:04:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 2547 states and 3829 transitions. [2021-12-14 18:04:58,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-14 18:04:58,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:04:58,465 INFO L514 BasicCegarLoop]: 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] [2021-12-14 18:04:58,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 18:04:58,465 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:04:58,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:04:58,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1953265320, now seen corresponding path program 1 times [2021-12-14 18:04:58,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:04:58,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516150892] [2021-12-14 18:04:58,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:04:58,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:04:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:58,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 18:04:58,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:04:58,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 18:04:58,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:04:58,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516150892] [2021-12-14 18:04:58,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516150892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:04:58,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:04:58,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 18:04:58,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403476663] [2021-12-14 18:04:58,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:04:58,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 18:04:58,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:04:58,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 18:04:58,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 18:04:58,624 INFO L87 Difference]: Start difference. First operand 2547 states and 3829 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 18:05:01,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:05:01,073 INFO L93 Difference]: Finished difference Result 7585 states and 11451 transitions. [2021-12-14 18:05:01,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 18:05:01,073 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2021-12-14 18:05:01,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:05:01,094 INFO L225 Difference]: With dead ends: 7585 [2021-12-14 18:05:01,094 INFO L226 Difference]: Without dead ends: 5029 [2021-12-14 18:05:01,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-14 18:05:01,104 INFO L933 BasicCegarLoop]: 1197 mSDtfsCounter, 1126 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 2910 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-14 18:05:01,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1227 Valid, 2910 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-14 18:05:01,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5029 states. [2021-12-14 18:05:01,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5029 to 5004. [2021-12-14 18:05:01,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5004 states, 3857 states have (on average 1.467461757842883) internal successors, (5660), 3900 states have internal predecessors, (5660), 949 states have call successors, (949), 205 states have call predecessors, (949), 197 states have return successors, (939), 930 states have call predecessors, (939), 939 states have call successors, (939) [2021-12-14 18:05:01,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5004 states to 5004 states and 7548 transitions. [2021-12-14 18:05:01,267 INFO L78 Accepts]: Start accepts. Automaton has 5004 states and 7548 transitions. Word has length 27 [2021-12-14 18:05:01,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:05:01,268 INFO L470 AbstractCegarLoop]: Abstraction has 5004 states and 7548 transitions. [2021-12-14 18:05:01,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-14 18:05:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 5004 states and 7548 transitions. [2021-12-14 18:05:01,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-14 18:05:01,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:05:01,271 INFO L514 BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:05:01,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 18:05:01,271 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:05:01,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:05:01,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1400463080, now seen corresponding path program 1 times [2021-12-14 18:05:01,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:05:01,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320651388] [2021-12-14 18:05:01,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:05:01,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:05:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 18:05:01,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:01,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-14 18:05:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:01,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:01,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:05:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:01,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-14 18:05:01,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:01,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 18:05:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:01,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:01,416 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 18:05:01,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:05:01,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320651388] [2021-12-14 18:05:01,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320651388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:05:01,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:05:01,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:05:01,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579954186] [2021-12-14 18:05:01,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:05:01,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:05:01,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:05:01,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:05:01,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:05:01,419 INFO L87 Difference]: Start difference. First operand 5004 states and 7548 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 18:05:07,702 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:09,779 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:11,880 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:13,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:05:13,365 INFO L93 Difference]: Finished difference Result 10466 states and 15931 transitions. [2021-12-14 18:05:13,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 18:05:13,366 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 77 [2021-12-14 18:05:13,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:05:13,395 INFO L225 Difference]: With dead ends: 10466 [2021-12-14 18:05:13,396 INFO L226 Difference]: Without dead ends: 5461 [2021-12-14 18:05:13,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:05:13,413 INFO L933 BasicCegarLoop]: 1101 mSDtfsCounter, 182 mSDsluCounter, 3979 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 154 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 5080 SdHoareTripleChecker+Invalid, 1232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2021-12-14 18:05:13,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 5080 Invalid, 1232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1075 Invalid, 3 Unknown, 0 Unchecked, 11.7s Time] [2021-12-14 18:05:13,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5461 states. [2021-12-14 18:05:13,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5461 to 5006. [2021-12-14 18:05:13,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5006 states, 3859 states have (on average 1.4661829489505054) internal successors, (5658), 3902 states have internal predecessors, (5658), 949 states have call successors, (949), 205 states have call predecessors, (949), 197 states have return successors, (939), 930 states have call predecessors, (939), 939 states have call successors, (939) [2021-12-14 18:05:13,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5006 states to 5006 states and 7546 transitions. [2021-12-14 18:05:13,654 INFO L78 Accepts]: Start accepts. Automaton has 5006 states and 7546 transitions. Word has length 77 [2021-12-14 18:05:13,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:05:13,655 INFO L470 AbstractCegarLoop]: Abstraction has 5006 states and 7546 transitions. [2021-12-14 18:05:13,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-14 18:05:13,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5006 states and 7546 transitions. [2021-12-14 18:05:13,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-14 18:05:13,660 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:05:13,661 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:05:13,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 18:05:13,661 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:05:13,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:05:13,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1710126176, now seen corresponding path program 1 times [2021-12-14 18:05:13,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:05:13,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468053869] [2021-12-14 18:05:13,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:05:13,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:05:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:13,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 18:05:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:13,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 18:05:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:13,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:13,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 18:05:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:13,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 18:05:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:13,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:13,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:13,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:05:13,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:13,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 18:05:13,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 18:05:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:13,937 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 18:05:13,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:05:13,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468053869] [2021-12-14 18:05:13,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468053869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:05:13,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:05:13,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 18:05:13,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200055156] [2021-12-14 18:05:13,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:05:13,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 18:05:13,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:05:13,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 18:05:13,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-14 18:05:13,966 INFO L87 Difference]: Start difference. First operand 5006 states and 7546 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-14 18:05:15,158 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:20,285 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:22,347 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:24,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:25,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:05:25,662 INFO L93 Difference]: Finished difference Result 11182 states and 17097 transitions. [2021-12-14 18:05:25,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 18:05:25,663 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 104 [2021-12-14 18:05:25,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:05:25,695 INFO L225 Difference]: With dead ends: 11182 [2021-12-14 18:05:25,695 INFO L226 Difference]: Without dead ends: 6179 [2021-12-14 18:05:25,713 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-14 18:05:25,713 INFO L933 BasicCegarLoop]: 1352 mSDtfsCounter, 728 mSDsluCounter, 3841 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 339 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 5193 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 339 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-12-14 18:05:25,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 5193 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [339 Valid, 842 Invalid, 3 Unknown, 0 Unchecked, 11.4s Time] [2021-12-14 18:05:25,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6179 states. [2021-12-14 18:05:25,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6179 to 5014. [2021-12-14 18:05:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5014 states, 3867 states have (on average 1.465218515645203) internal successors, (5666), 3910 states have internal predecessors, (5666), 949 states have call successors, (949), 205 states have call predecessors, (949), 197 states have return successors, (939), 930 states have call predecessors, (939), 939 states have call successors, (939) [2021-12-14 18:05:25,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5014 states to 5014 states and 7554 transitions. [2021-12-14 18:05:25,903 INFO L78 Accepts]: Start accepts. Automaton has 5014 states and 7554 transitions. Word has length 104 [2021-12-14 18:05:25,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:05:25,904 INFO L470 AbstractCegarLoop]: Abstraction has 5014 states and 7554 transitions. [2021-12-14 18:05:25,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-14 18:05:25,905 INFO L276 IsEmpty]: Start isEmpty. Operand 5014 states and 7554 transitions. [2021-12-14 18:05:25,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-14 18:05:25,907 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:05:25,907 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:05:25,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 18:05:25,908 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:05:25,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:05:25,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1744883690, now seen corresponding path program 1 times [2021-12-14 18:05:25,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:05:25,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632255627] [2021-12-14 18:05:25,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:05:25,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:05:25,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:26,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 18:05:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:26,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 18:05:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:26,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:26,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 18:05:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:26,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:26,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 18:05:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:26,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:26,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:05:26,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:26,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 18:05:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:26,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 18:05:26,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:26,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:26,125 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 18:05:26,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:05:26,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632255627] [2021-12-14 18:05:26,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632255627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:05:26,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:05:26,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:05:26,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182170800] [2021-12-14 18:05:26,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:05:26,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:05:26,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:05:26,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:05:26,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:05:26,127 INFO L87 Difference]: Start difference. First operand 5014 states and 7554 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-14 18:05:27,568 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:31,545 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:33,639 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:35,794 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:37,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 18:05:37,110 INFO L93 Difference]: Finished difference Result 10407 states and 16031 transitions. [2021-12-14 18:05:37,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 18:05:37,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 102 [2021-12-14 18:05:37,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 18:05:37,132 INFO L225 Difference]: With dead ends: 10407 [2021-12-14 18:05:37,132 INFO L226 Difference]: Without dead ends: 5396 [2021-12-14 18:05:37,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-14 18:05:37,152 INFO L933 BasicCegarLoop]: 1006 mSDtfsCounter, 1194 mSDsluCounter, 1245 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 468 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2021-12-14 18:05:37,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1293 Valid, 2251 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 511 Invalid, 3 Unknown, 0 Unchecked, 10.8s Time] [2021-12-14 18:05:37,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5396 states. [2021-12-14 18:05:37,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5396 to 4990. [2021-12-14 18:05:37,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4990 states, 3851 states have (on average 1.3996364580628409) internal successors, (5390), 3894 states have internal predecessors, (5390), 941 states have call successors, (941), 205 states have call predecessors, (941), 197 states have return successors, (931), 922 states have call predecessors, (931), 931 states have call successors, (931) [2021-12-14 18:05:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4990 states to 4990 states and 7262 transitions. [2021-12-14 18:05:37,304 INFO L78 Accepts]: Start accepts. Automaton has 4990 states and 7262 transitions. Word has length 102 [2021-12-14 18:05:37,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 18:05:37,306 INFO L470 AbstractCegarLoop]: Abstraction has 4990 states and 7262 transitions. [2021-12-14 18:05:37,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 3 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-12-14 18:05:37,306 INFO L276 IsEmpty]: Start isEmpty. Operand 4990 states and 7262 transitions. [2021-12-14 18:05:37,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-14 18:05:37,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 18:05:37,312 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 18:05:37,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 18:05:37,313 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 18:05:37,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 18:05:37,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1621242927, now seen corresponding path program 1 times [2021-12-14 18:05:37,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 18:05:37,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788012606] [2021-12-14 18:05:37,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 18:05:37,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 18:05:37,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-14 18:05:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:37,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 18:05:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:37,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-14 18:05:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:37,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:37,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 18:05:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:37,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 18:05:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:37,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:37,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:37,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-14 18:05:37,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:37,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 18:05:37,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:37,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-14 18:05:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:37,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 18:05:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 18:05:37,537 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-14 18:05:37,537 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 18:05:37,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788012606] [2021-12-14 18:05:37,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788012606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 18:05:37,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 18:05:37,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 18:05:37,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868807542] [2021-12-14 18:05:37,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 18:05:37,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 18:05:37,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 18:05:37,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 18:05:37,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-14 18:05:37,539 INFO L87 Difference]: Start difference. First operand 4990 states and 7262 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-12-14 18:05:39,986 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:41,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:45,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:47,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 18:05:50,000 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []