./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--abituguru3.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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--abituguru3.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 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 14:58:51,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 14:58:51,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 14:58:51,474 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 14:58:51,475 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 14:58:51,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 14:58:51,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 14:58:51,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 14:58:51,487 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 14:58:51,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 14:58:51,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 14:58:51,490 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 14:58:51,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 14:58:51,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 14:58:51,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 14:58:51,497 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 14:58:51,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 14:58:51,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 14:58:51,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 14:58:51,502 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 14:58:51,504 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 14:58:51,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 14:58:51,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 14:58:51,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 14:58:51,508 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 14:58:51,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 14:58:51,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 14:58:51,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 14:58:51,510 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 14:58:51,511 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 14:58:51,511 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 14:58:51,512 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 14:58:51,513 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 14:58:51,514 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 14:58:51,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 14:58:51,515 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 14:58:51,515 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 14:58:51,515 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 14:58:51,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 14:58:51,516 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 14:58:51,516 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 14:58:51,517 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 14:58:51,540 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 14:58:51,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 14:58:51,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 14:58:51,546 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 14:58:51,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 14:58:51,547 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 14:58:51,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 14:58:51,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 14:58:51,548 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 14:58:51,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 14:58:51,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 14:58:51,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 14:58:51,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 14:58:51,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 14:58:51,549 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 14:58:51,549 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 14:58:51,550 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 14:58:51,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 14:58:51,550 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 14:58:51,550 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 14:58:51,550 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 14:58:51,550 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:58:51,551 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 14:58:51,551 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 14:58:51,551 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 14:58:51,551 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 14:58:51,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 14:58:51,552 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 14:58:51,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 14:58:51,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 14:58:51,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 14:58:51,553 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32c3d0de0693c88d7932ff8b6e02d1235a8aa90cfbd4ebc203b8adf917998be1 [2021-12-22 14:58:51,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 14:58:51,792 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 14:58:51,794 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 14:58:51,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 14:58:51,797 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 14:58:51,798 INFO L432 ainManager$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--abituguru3.ko-entry_point.cil.out.i [2021-12-22 14:58:51,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f4ed3fe7/108e2f5b73da449f981e380252cdaf71/FLAG2707ae179 [2021-12-22 14:58:52,317 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 14:58:52,317 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--abituguru3.ko-entry_point.cil.out.i [2021-12-22 14:58:52,339 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f4ed3fe7/108e2f5b73da449f981e380252cdaf71/FLAG2707ae179 [2021-12-22 14:58:52,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f4ed3fe7/108e2f5b73da449f981e380252cdaf71 [2021-12-22 14:58:52,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 14:58:52,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 14:58:52,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 14:58:52,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 14:58:52,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 14:58:52,358 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:58:52" (1/1) ... [2021-12-22 14:58:52,358 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb5632c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:58:52, skipping insertion in model container [2021-12-22 14:58:52,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 02:58:52" (1/1) ... [2021-12-22 14:58:52,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 14:58:52,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 14:58:53,174 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--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2021-12-22 14:58:53,248 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:58:53,349 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 14:58:53,481 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--abituguru3.ko-entry_point.cil.out.i[192198,192211] [2021-12-22 14:58:53,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 14:58:53,654 INFO L208 MainTranslator]: Completed translation [2021-12-22 14:58:53,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:58:53 WrapperNode [2021-12-22 14:58:53,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 14:58:53,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 14:58:53,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 14:58:53,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 14:58:53,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:58:53" (1/1) ... [2021-12-22 14:58:53,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:58:53" (1/1) ... [2021-12-22 14:58:53,920 INFO L137 Inliner]: procedures = 165, calls = 5249, calls flagged for inlining = 57, calls inlined = 52, statements flattened = 6390 [2021-12-22 14:58:53,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 14:58:53,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 14:58:53,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 14:58:53,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 14:58:53,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:58:53" (1/1) ... [2021-12-22 14:58:53,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:58:53" (1/1) ... [2021-12-22 14:58:53,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:58:53" (1/1) ... [2021-12-22 14:58:53,982 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:58:53" (1/1) ... [2021-12-22 14:58:54,070 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:58:53" (1/1) ... [2021-12-22 14:58:54,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:58:53" (1/1) ... [2021-12-22 14:58:54,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:58:53" (1/1) ... [2021-12-22 14:58:54,122 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 14:58:54,123 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 14:58:54,123 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 14:58:54,123 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 14:58:54,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:58:53" (1/1) ... [2021-12-22 14:58:54,129 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 14:58:54,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:58:54,146 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) [2021-12-22 14:58:54,164 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 [2021-12-22 14:58:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2021-12-22 14:58:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2021-12-22 14:58:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-22 14:58:54,170 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-22 14:58:54,170 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2021-12-22 14:58:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2021-12-22 14:58:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-22 14:58:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-22 14:58:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2021-12-22 14:58:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2021-12-22 14:58:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_remove [2021-12-22 14:58:54,171 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_remove [2021-12-22 14:58:54,171 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2021-12-22 14:58:54,172 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2021-12-22 14:58:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-22 14:58:54,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-22 14:58:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 14:58:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-22 14:58:54,172 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-22 14:58:54,172 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2021-12-22 14:58:54,172 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2021-12-22 14:58:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 14:58:54,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 14:58:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 14:58:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 14:58:54,173 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 14:58:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 14:58:54,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 14:58:54,173 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_probe [2021-12-22 14:58:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_probe [2021-12-22 14:58:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-22 14:58:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-22 14:58:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2021-12-22 14:58:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2021-12-22 14:58:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 14:58:54,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 14:58:54,174 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2021-12-22 14:58:54,175 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2021-12-22 14:58:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-22 14:58:54,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-22 14:58:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 14:58:54,175 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 14:58:54,175 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2021-12-22 14:58:54,176 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2021-12-22 14:58:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 14:58:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2021-12-22 14:58:54,176 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2021-12-22 14:58:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-22 14:58:54,176 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-22 14:58:54,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 14:58:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 14:58:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 14:58:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2021-12-22 14:58:54,177 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2021-12-22 14:58:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 14:58:54,177 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-22 14:58:54,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-22 14:58:54,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 14:58:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 14:58:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2021-12-22 14:58:54,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2021-12-22 14:58:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2021-12-22 14:58:54,179 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-22 14:58:54,179 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-22 14:58:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-22 14:58:54,180 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-22 14:58:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 14:58:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2021-12-22 14:58:54,180 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2021-12-22 14:58:54,180 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 14:58:54,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 14:58:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2021-12-22 14:58:54,181 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2021-12-22 14:58:54,181 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-22 14:58:54,181 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-22 14:58:54,442 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 14:58:54,443 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 14:58:56,936 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-22 14:59:03,617 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 14:59:03,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 14:59:03,637 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 14:59:03,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:59:03 BoogieIcfgContainer [2021-12-22 14:59:03,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 14:59:03,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 14:59:03,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 14:59:03,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 14:59:03,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 02:58:52" (1/3) ... [2021-12-22 14:59:03,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b550918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:59:03, skipping insertion in model container [2021-12-22 14:59:03,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 02:58:53" (2/3) ... [2021-12-22 14:59:03,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b550918 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 02:59:03, skipping insertion in model container [2021-12-22 14:59:03,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 02:59:03" (3/3) ... [2021-12-22 14:59:03,646 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--hwmon--abituguru3.ko-entry_point.cil.out.i [2021-12-22 14:59:03,650 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 14:59:03,650 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 14:59:03,689 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 14:59:03,699 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 [2021-12-22 14:59:03,700 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 14:59:03,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 559 states, 426 states have (on average 1.4366197183098592) internal successors, (612), 439 states have internal predecessors, (612), 101 states have call successors, (101), 31 states have call predecessors, (101), 30 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) [2021-12-22 14:59:03,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-22 14:59:03,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:59:03,725 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] [2021-12-22 14:59:03,726 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:59:03,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:59:03,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1286543678, now seen corresponding path program 1 times [2021-12-22 14:59:03,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:59:03,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388716539] [2021-12-22 14:59:03,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:59:03,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:59:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:04,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:59:04,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:04,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:59:04,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:59:04,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388716539] [2021-12-22 14:59:04,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388716539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:59:04,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:59:04,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:59:04,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760627227] [2021-12-22 14:59:04,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:59:04,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:59:04,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:59:04,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:59:04,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:59:04,543 INFO L87 Difference]: Start difference. First operand has 559 states, 426 states have (on average 1.4366197183098592) internal successors, (612), 439 states have internal predecessors, (612), 101 states have call successors, (101), 31 states have call predecessors, (101), 30 states have return successors, (97), 97 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-12-22 14:59:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:59:04,880 INFO L93 Difference]: Finished difference Result 1560 states and 2283 transitions. [2021-12-22 14:59:04,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:59:04,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 22 [2021-12-22 14:59:04,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:59:04,896 INFO L225 Difference]: With dead ends: 1560 [2021-12-22 14:59:04,897 INFO L226 Difference]: Without dead ends: 987 [2021-12-22 14:59:04,912 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 [2021-12-22 14:59:04,928 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 616 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 14:59:04,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 1640 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 14:59:04,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 987 states. [2021-12-22 14:59:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 987 to 973. [2021-12-22 14:59:05,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 740 states have (on average 1.4) internal successors, (1036), 751 states have internal predecessors, (1036), 176 states have call successors, (176), 57 states have call predecessors, (176), 56 states have return successors, (171), 170 states have call predecessors, (171), 171 states have call successors, (171) [2021-12-22 14:59:05,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1383 transitions. [2021-12-22 14:59:05,074 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1383 transitions. Word has length 22 [2021-12-22 14:59:05,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:59:05,074 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1383 transitions. [2021-12-22 14:59:05,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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) [2021-12-22 14:59:05,074 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1383 transitions. [2021-12-22 14:59:05,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-12-22 14:59:05,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:59:05,076 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] [2021-12-22 14:59:05,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 14:59:05,076 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:59:05,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:59:05,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1089981821, now seen corresponding path program 1 times [2021-12-22 14:59:05,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:59:05,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951948083] [2021-12-22 14:59:05,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:59:05,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:59:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:05,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 14:59:05,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:05,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:59:05,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:59:05,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951948083] [2021-12-22 14:59:05,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951948083] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:59:05,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:59:05,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 14:59:05,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274185529] [2021-12-22 14:59:05,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:59:05,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 14:59:05,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:59:05,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 14:59:05,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 14:59:05,798 INFO L87 Difference]: Start difference. First operand 973 states and 1383 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (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) [2021-12-22 14:59:06,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:59:06,112 INFO L93 Difference]: Finished difference Result 2750 states and 3913 transitions. [2021-12-22 14:59:06,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 14:59:06,113 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 [2021-12-22 14:59:06,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:59:06,124 INFO L225 Difference]: With dead ends: 2750 [2021-12-22 14:59:06,124 INFO L226 Difference]: Without dead ends: 1780 [2021-12-22 14:59:06,128 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 [2021-12-22 14:59:06,132 INFO L933 BasicCegarLoop]: 1342 mSDtfsCounter, 757 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:59:06,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [757 Valid, 2023 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 14:59:06,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1780 states. [2021-12-22 14:59:06,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1780 to 1771. [2021-12-22 14:59:06,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1340 states have (on average 1.4014925373134328) internal successors, (1878), 1356 states have internal predecessors, (1878), 323 states have call successors, (323), 108 states have call predecessors, (323), 107 states have return successors, (318), 318 states have call predecessors, (318), 318 states have call successors, (318) [2021-12-22 14:59:06,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2519 transitions. [2021-12-22 14:59:06,189 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2519 transitions. Word has length 21 [2021-12-22 14:59:06,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:59:06,189 INFO L470 AbstractCegarLoop]: Abstraction has 1771 states and 2519 transitions. [2021-12-22 14:59:06,190 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) [2021-12-22 14:59:06,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2519 transitions. [2021-12-22 14:59:06,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 14:59:06,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:59:06,191 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, 1, 1, 1, 1, 1] [2021-12-22 14:59:06,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 14:59:06,192 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:59:06,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:59:06,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2140487856, now seen corresponding path program 1 times [2021-12-22 14:59:06,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:59:06,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652064058] [2021-12-22 14:59:06,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:59:06,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:59:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:06,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:59:06,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:06,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:06,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:59:06,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:59:06,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652064058] [2021-12-22 14:59:06,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652064058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:59:06,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:59:06,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:59:06,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672228110] [2021-12-22 14:59:06,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:59:06,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:59:06,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:59:06,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:59:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:59:06,603 INFO L87 Difference]: Start difference. First operand 1771 states and 2519 transitions. Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:59:08,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:59:08,154 INFO L93 Difference]: Finished difference Result 4844 states and 7178 transitions. [2021-12-22 14:59:08,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:59:08,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-22 14:59:08,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:59:08,166 INFO L225 Difference]: With dead ends: 4844 [2021-12-22 14:59:08,167 INFO L226 Difference]: Without dead ends: 3076 [2021-12-22 14:59:08,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-22 14:59:08,173 INFO L933 BasicCegarLoop]: 1337 mSDtfsCounter, 915 mSDsluCounter, 5375 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 6712 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:59:08,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 6712 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 14:59:08,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2021-12-22 14:59:08,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 1793. [2021-12-22 14:59:08,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1358 states have (on average 1.4005891016200294) internal successors, (1902), 1374 states have internal predecessors, (1902), 327 states have call successors, (327), 108 states have call predecessors, (327), 107 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) [2021-12-22 14:59:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2551 transitions. [2021-12-22 14:59:08,246 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2551 transitions. Word has length 32 [2021-12-22 14:59:08,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:59:08,246 INFO L470 AbstractCegarLoop]: Abstraction has 1793 states and 2551 transitions. [2021-12-22 14:59:08,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:59:08,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2551 transitions. [2021-12-22 14:59:08,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-22 14:59:08,251 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:59:08,251 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, 1, 1, 1, 1, 1] [2021-12-22 14:59:08,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 14:59:08,252 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:59:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:59:08,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1935624722, now seen corresponding path program 1 times [2021-12-22 14:59:08,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:59:08,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735589280] [2021-12-22 14:59:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:59:08,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:59:08,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:08,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:59:08,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:08,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:08,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:59:08,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:59:08,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735589280] [2021-12-22 14:59:08,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735589280] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:59:08,660 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:59:08,660 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:59:08,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36929963] [2021-12-22 14:59:08,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:59:08,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:59:08,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:59:08,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:59:08,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:59:08,661 INFO L87 Difference]: Start difference. First operand 1793 states and 2551 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:59:09,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:59:09,147 INFO L93 Difference]: Finished difference Result 1877 states and 2700 transitions. [2021-12-22 14:59:09,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:59:09,148 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2021-12-22 14:59:09,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:59:09,155 INFO L225 Difference]: With dead ends: 1877 [2021-12-22 14:59:09,157 INFO L226 Difference]: Without dead ends: 1874 [2021-12-22 14:59:09,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:59:09,160 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 805 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 868 SdHoareTripleChecker+Valid, 1240 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 14:59:09,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [868 Valid, 1240 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 14:59:09,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2021-12-22 14:59:09,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1792. [2021-12-22 14:59:09,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1792 states, 1358 states have (on average 1.3998527245949925) internal successors, (1901), 1373 states have internal predecessors, (1901), 326 states have call successors, (326), 108 states have call predecessors, (326), 107 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) [2021-12-22 14:59:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1792 states to 1792 states and 2549 transitions. [2021-12-22 14:59:09,208 INFO L78 Accepts]: Start accepts. Automaton has 1792 states and 2549 transitions. Word has length 32 [2021-12-22 14:59:09,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:59:09,209 INFO L470 AbstractCegarLoop]: Abstraction has 1792 states and 2549 transitions. [2021-12-22 14:59:09,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:59:09,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1792 states and 2549 transitions. [2021-12-22 14:59:09,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-22 14:59:09,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:59:09,210 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, 1, 1, 1, 1, 1, 1] [2021-12-22 14:59:09,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 14:59:09,210 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:59:09,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:59:09,211 INFO L85 PathProgramCache]: Analyzing trace with hash 125104557, now seen corresponding path program 1 times [2021-12-22 14:59:09,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:59:09,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594105454] [2021-12-22 14:59:09,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:59:09,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:59:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:09,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:59:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:09,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:59:09,676 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:59:09,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594105454] [2021-12-22 14:59:09,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594105454] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:59:09,676 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:59:09,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:59:09,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756703081] [2021-12-22 14:59:09,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:59:09,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:59:09,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:59:09,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:59:09,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:59:09,678 INFO L87 Difference]: Start difference. First operand 1792 states and 2549 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:59:10,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:59:10,299 INFO L93 Difference]: Finished difference Result 1876 states and 2698 transitions. [2021-12-22 14:59:10,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:59:10,299 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2021-12-22 14:59:10,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:59:10,307 INFO L225 Difference]: With dead ends: 1876 [2021-12-22 14:59:10,308 INFO L226 Difference]: Without dead ends: 1873 [2021-12-22 14:59:10,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:59:10,309 INFO L933 BasicCegarLoop]: 761 mSDtfsCounter, 802 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:59:10,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 1237 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 14:59:10,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1873 states. [2021-12-22 14:59:10,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1873 to 1791. [2021-12-22 14:59:10,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1358 states have (on average 1.3991163475699557) internal successors, (1900), 1372 states have internal predecessors, (1900), 325 states have call successors, (325), 108 states have call predecessors, (325), 107 states have return successors, (322), 322 states have call predecessors, (322), 322 states have call successors, (322) [2021-12-22 14:59:10,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2547 transitions. [2021-12-22 14:59:10,366 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2547 transitions. Word has length 33 [2021-12-22 14:59:10,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:59:10,366 INFO L470 AbstractCegarLoop]: Abstraction has 1791 states and 2547 transitions. [2021-12-22 14:59:10,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:59:10,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2547 transitions. [2021-12-22 14:59:10,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-12-22 14:59:10,369 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:59:10,369 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:59:10,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 14:59:10,369 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:59:10,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:59:10,370 INFO L85 PathProgramCache]: Analyzing trace with hash -416792367, now seen corresponding path program 1 times [2021-12-22 14:59:10,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:59:10,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749314170] [2021-12-22 14:59:10,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:59:10,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:59:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:10,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:59:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:10,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:59:10,746 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:59:10,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749314170] [2021-12-22 14:59:10,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749314170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:59:10,747 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:59:10,747 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:59:10,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645534119] [2021-12-22 14:59:10,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:59:10,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:59:10,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:59:10,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:59:10,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:59:10,748 INFO L87 Difference]: Start difference. First operand 1791 states and 2547 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:59:11,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:59:11,630 INFO L93 Difference]: Finished difference Result 5089 states and 7303 transitions. [2021-12-22 14:59:11,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:59:11,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2021-12-22 14:59:11,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:59:11,645 INFO L225 Difference]: With dead ends: 5089 [2021-12-22 14:59:11,645 INFO L226 Difference]: Without dead ends: 3289 [2021-12-22 14:59:11,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:59:11,653 INFO L933 BasicCegarLoop]: 823 mSDtfsCounter, 803 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-22 14:59:11,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [874 Valid, 1913 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-22 14:59:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2021-12-22 14:59:11,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3186. [2021-12-22 14:59:11,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 2415 states have (on average 1.3958592132505176) internal successors, (3371), 2452 states have internal predecessors, (3371), 589 states have call successors, (589), 195 states have call predecessors, (589), 181 states have return successors, (583), 562 states have call predecessors, (583), 579 states have call successors, (583) [2021-12-22 14:59:11,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 4543 transitions. [2021-12-22 14:59:11,743 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 4543 transitions. Word has length 34 [2021-12-22 14:59:11,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:59:11,743 INFO L470 AbstractCegarLoop]: Abstraction has 3186 states and 4543 transitions. [2021-12-22 14:59:11,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-22 14:59:11,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 4543 transitions. [2021-12-22 14:59:11,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-22 14:59:11,746 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:59:11,746 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] [2021-12-22 14:59:11,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 14:59:11,747 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:59:11,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:59:11,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1540623621, now seen corresponding path program 1 times [2021-12-22 14:59:11,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:59:11,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069405711] [2021-12-22 14:59:11,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:59:11,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:59:11,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:12,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:59:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:12,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:12,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:59:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:12,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:12,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:12,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:59:12,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:12,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 14:59:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:12,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 14:59:12,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:59:12,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069405711] [2021-12-22 14:59:12,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069405711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:59:12,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:59:12,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:59:12,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324992469] [2021-12-22 14:59:12,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:59:12,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:59:12,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:59:12,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:59:12,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:59:12,215 INFO L87 Difference]: Start difference. First operand 3186 states and 4543 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-22 14:59:15,228 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 [] [2021-12-22 14:59:17,418 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 [] [2021-12-22 14:59:18,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:59:18,539 INFO L93 Difference]: Finished difference Result 8718 states and 12635 transitions. [2021-12-22 14:59:18,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:59:18,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 66 [2021-12-22 14:59:18,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:59:18,563 INFO L225 Difference]: With dead ends: 8718 [2021-12-22 14:59:18,563 INFO L226 Difference]: Without dead ends: 5535 [2021-12-22 14:59:18,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:59:18,575 INFO L933 BasicCegarLoop]: 991 mSDtfsCounter, 1103 mSDsluCounter, 1702 mSDsCounter, 0 mSdLazyCounter, 841 mSolverCounterSat, 568 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1205 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 1411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 841 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:59:18,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1205 Valid, 2693 Invalid, 1411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 841 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2021-12-22 14:59:18,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5535 states. [2021-12-22 14:59:18,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5535 to 4738. [2021-12-22 14:59:18,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4738 states, 3613 states have (on average 1.3874896208137282) internal successors, (5013), 3662 states have internal predecessors, (5013), 857 states have call successors, (857), 285 states have call predecessors, (857), 267 states have return successors, (853), 826 states have call predecessors, (853), 847 states have call successors, (853) [2021-12-22 14:59:18,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4738 states to 4738 states and 6723 transitions. [2021-12-22 14:59:18,714 INFO L78 Accepts]: Start accepts. Automaton has 4738 states and 6723 transitions. Word has length 66 [2021-12-22 14:59:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:59:18,715 INFO L470 AbstractCegarLoop]: Abstraction has 4738 states and 6723 transitions. [2021-12-22 14:59:18,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-22 14:59:18,715 INFO L276 IsEmpty]: Start isEmpty. Operand 4738 states and 6723 transitions. [2021-12-22 14:59:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-22 14:59:18,718 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:59:18,718 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:59:18,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 14:59:18,719 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:59:18,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:59:18,720 INFO L85 PathProgramCache]: Analyzing trace with hash 127935254, now seen corresponding path program 1 times [2021-12-22 14:59:18,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:59:18,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084673859] [2021-12-22 14:59:18,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:59:18,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:59:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:19,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-22 14:59:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 14:59:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:19,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:59:19,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:19,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:19,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 14:59:19,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:19,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:19,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:19,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 14:59:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:19,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 14:59:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-22 14:59:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-22 14:59:19,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:59:19,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084673859] [2021-12-22 14:59:19,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084673859] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:59:19,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:59:19,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:59:19,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861415514] [2021-12-22 14:59:19,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:59:19,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:59:19,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:59:19,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:59:19,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:59:19,132 INFO L87 Difference]: Start difference. First operand 4738 states and 6723 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-22 14:59:22,241 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 [] [2021-12-22 14:59:23,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:59:23,184 INFO L93 Difference]: Finished difference Result 11124 states and 15869 transitions. [2021-12-22 14:59:23,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 14:59:23,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 85 [2021-12-22 14:59:23,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:59:23,224 INFO L225 Difference]: With dead ends: 11124 [2021-12-22 14:59:23,224 INFO L226 Difference]: Without dead ends: 6389 [2021-12-22 14:59:23,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2021-12-22 14:59:23,240 INFO L933 BasicCegarLoop]: 727 mSDtfsCounter, 756 mSDsluCounter, 1526 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 370 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 2253 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-22 14:59:23,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [821 Valid, 2253 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 989 Invalid, 1 Unknown, 0 Unchecked, 3.9s Time] [2021-12-22 14:59:23,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2021-12-22 14:59:23,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 6142. [2021-12-22 14:59:23,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6142 states, 4803 states have (on average 1.402665001041016) internal successors, (6737), 4868 states have internal predecessors, (6737), 995 states have call successors, (995), 361 states have call predecessors, (995), 343 states have return successors, (991), 948 states have call predecessors, (991), 979 states have call successors, (991) [2021-12-22 14:59:23,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8723 transitions. [2021-12-22 14:59:23,432 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8723 transitions. Word has length 85 [2021-12-22 14:59:23,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:59:23,432 INFO L470 AbstractCegarLoop]: Abstraction has 6142 states and 8723 transitions. [2021-12-22 14:59:23,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-22 14:59:23,433 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8723 transitions. [2021-12-22 14:59:23,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-22 14:59:23,435 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:59:23,435 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:59:23,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 14:59:23,436 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:59:23,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:59:23,436 INFO L85 PathProgramCache]: Analyzing trace with hash 986755271, now seen corresponding path program 1 times [2021-12-22 14:59:23,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:59:23,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145292438] [2021-12-22 14:59:23,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:59:23,437 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:59:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:23,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:59:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:23,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:23,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:23,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:59:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:23,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:23,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:59:23,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:23,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:59:23,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-22 14:59:23,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:59:23,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145292438] [2021-12-22 14:59:23,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145292438] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:59:23,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:59:23,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 14:59:23,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11296942] [2021-12-22 14:59:23,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:59:23,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 14:59:23,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:59:23,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 14:59:23,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:59:23,860 INFO L87 Difference]: Start difference. First operand 6142 states and 8723 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-22 14:59:27,288 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:59:29,952 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:59:31,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:59:31,815 INFO L93 Difference]: Finished difference Result 15372 states and 22173 transitions. [2021-12-22 14:59:31,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 14:59:31,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 86 [2021-12-22 14:59:31,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:59:31,860 INFO L225 Difference]: With dead ends: 15372 [2021-12-22 14:59:31,860 INFO L226 Difference]: Without dead ends: 9233 [2021-12-22 14:59:31,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-22 14:59:31,878 INFO L933 BasicCegarLoop]: 1371 mSDtfsCounter, 820 mSDsluCounter, 2963 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 298 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 4334 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-22 14:59:31,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [918 Valid, 4334 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 1296 Invalid, 2 Unknown, 0 Unchecked, 7.6s Time] [2021-12-22 14:59:31,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9233 states. [2021-12-22 14:59:32,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9233 to 8128. [2021-12-22 14:59:32,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8128 states, 6388 states have (on average 1.3963681903569192) internal successors, (8920), 6464 states have internal predecessors, (8920), 1289 states have call successors, (1289), 469 states have call predecessors, (1289), 450 states have return successors, (1292), 1242 states have call predecessors, (1292), 1276 states have call successors, (1292) [2021-12-22 14:59:32,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8128 states to 8128 states and 11501 transitions. [2021-12-22 14:59:32,171 INFO L78 Accepts]: Start accepts. Automaton has 8128 states and 11501 transitions. Word has length 86 [2021-12-22 14:59:32,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:59:32,172 INFO L470 AbstractCegarLoop]: Abstraction has 8128 states and 11501 transitions. [2021-12-22 14:59:32,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2021-12-22 14:59:32,172 INFO L276 IsEmpty]: Start isEmpty. Operand 8128 states and 11501 transitions. [2021-12-22 14:59:32,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-22 14:59:32,178 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:59:32,178 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:59:32,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 14:59:32,179 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:59:32,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:59:32,179 INFO L85 PathProgramCache]: Analyzing trace with hash -216719008, now seen corresponding path program 1 times [2021-12-22 14:59:32,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:59:32,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339362384] [2021-12-22 14:59:32,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:59:32,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:59:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:32,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:59:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:32,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:59:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:33,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:59:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:33,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-22 14:59:33,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:33,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:33,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:59:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:33,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:59:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:33,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-22 14:59:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:33,060 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-22 14:59:33,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:59:33,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339362384] [2021-12-22 14:59:33,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339362384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:59:33,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:59:33,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:59:33,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933440855] [2021-12-22 14:59:33,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:59:33,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:59:33,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:59:33,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:59:33,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:59:33,062 INFO L87 Difference]: Start difference. First operand 8128 states and 11501 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 14:59:36,743 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:59:38,777 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 14:59:41,227 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 [] [2021-12-22 14:59:44,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:59:44,226 INFO L93 Difference]: Finished difference Result 19602 states and 28161 transitions. [2021-12-22 14:59:44,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 14:59:44,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 117 [2021-12-22 14:59:44,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:59:44,276 INFO L225 Difference]: With dead ends: 19602 [2021-12-22 14:59:44,277 INFO L226 Difference]: Without dead ends: 11477 [2021-12-22 14:59:44,302 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-22 14:59:44,303 INFO L933 BasicCegarLoop]: 1266 mSDtfsCounter, 1075 mSDsluCounter, 2763 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 645 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1143 SdHoareTripleChecker+Valid, 4029 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-12-22 14:59:44,303 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1143 Valid, 4029 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 2198 Invalid, 3 Unknown, 0 Unchecked, 10.7s Time] [2021-12-22 14:59:44,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11477 states. [2021-12-22 14:59:44,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11477 to 10110. [2021-12-22 14:59:44,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10110 states, 7968 states have (on average 1.3928212851405624) internal successors, (11098), 8058 states have internal predecessors, (11098), 1587 states have call successors, (1587), 575 states have call predecessors, (1587), 554 states have return successors, (1594), 1536 states have call predecessors, (1594), 1574 states have call successors, (1594) [2021-12-22 14:59:44,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10110 states to 10110 states and 14279 transitions. [2021-12-22 14:59:44,641 INFO L78 Accepts]: Start accepts. Automaton has 10110 states and 14279 transitions. Word has length 117 [2021-12-22 14:59:44,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:59:44,643 INFO L470 AbstractCegarLoop]: Abstraction has 10110 states and 14279 transitions. [2021-12-22 14:59:44,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 14:59:44,643 INFO L276 IsEmpty]: Start isEmpty. Operand 10110 states and 14279 transitions. [2021-12-22 14:59:44,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-22 14:59:44,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:59:44,647 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:59:44,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 14:59:44,648 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:59:44,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:59:44,650 INFO L85 PathProgramCache]: Analyzing trace with hash 504148532, now seen corresponding path program 1 times [2021-12-22 14:59:44,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:59:44,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472538572] [2021-12-22 14:59:44,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:59:44,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:59:44,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:45,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:59:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:45,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:45,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:45,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:59:45,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:45,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:45,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:59:45,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:45,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-22 14:59:45,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:45,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:45,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:45,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:59:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:45,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:59:45,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:45,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 14:59:45,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:45,111 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-22 14:59:45,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:59:45,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472538572] [2021-12-22 14:59:45,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472538572] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:59:45,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:59:45,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:59:45,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726856040] [2021-12-22 14:59:45,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:59:45,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:59:45,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:59:45,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:59:45,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:59:45,114 INFO L87 Difference]: Start difference. First operand 10110 states and 14279 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 14:59:48,599 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 [] [2021-12-22 14:59:50,887 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 [] [2021-12-22 14:59:53,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:59:53,506 INFO L93 Difference]: Finished difference Result 23836 states and 34157 transitions. [2021-12-22 14:59:53,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 14:59:53,506 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 119 [2021-12-22 14:59:53,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:59:53,566 INFO L225 Difference]: With dead ends: 23836 [2021-12-22 14:59:53,566 INFO L226 Difference]: Without dead ends: 13729 [2021-12-22 14:59:53,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-12-22 14:59:53,596 INFO L933 BasicCegarLoop]: 1293 mSDtfsCounter, 1168 mSDsluCounter, 2236 mSDsCounter, 0 mSdLazyCounter, 1880 mSolverCounterSat, 785 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 3529 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 785 IncrementalHoareTripleChecker+Valid, 1880 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:59:53,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1236 Valid, 3529 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [785 Valid, 1880 Invalid, 2 Unknown, 0 Unchecked, 8.0s Time] [2021-12-22 14:59:53,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13729 states. [2021-12-22 14:59:53,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13729 to 12092. [2021-12-22 14:59:53,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12092 states, 9548 states have (on average 1.3904482614160034) internal successors, (13276), 9652 states have internal predecessors, (13276), 1885 states have call successors, (1885), 681 states have call predecessors, (1885), 658 states have return successors, (1896), 1830 states have call predecessors, (1896), 1872 states have call successors, (1896) [2021-12-22 14:59:53,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12092 states to 12092 states and 17057 transitions. [2021-12-22 14:59:53,940 INFO L78 Accepts]: Start accepts. Automaton has 12092 states and 17057 transitions. Word has length 119 [2021-12-22 14:59:53,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:59:53,941 INFO L470 AbstractCegarLoop]: Abstraction has 12092 states and 17057 transitions. [2021-12-22 14:59:53,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 3 states have internal predecessors, (84), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 14:59:53,941 INFO L276 IsEmpty]: Start isEmpty. Operand 12092 states and 17057 transitions. [2021-12-22 14:59:53,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-22 14:59:53,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:59:53,948 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:59:53,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 14:59:53,949 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:59:53,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:59:53,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1210000877, now seen corresponding path program 1 times [2021-12-22 14:59:53,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:59:53,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852448523] [2021-12-22 14:59:53,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:59:53,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:59:54,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:54,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:59:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:54,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:54,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-22 14:59:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:54,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:54,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:59:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:54,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-22 14:59:54,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:54,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 14:59:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:54,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 14:59:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:54,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 14:59:54,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:54,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-22 14:59:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:59:54,395 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-12-22 14:59:54,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:59:54,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852448523] [2021-12-22 14:59:54,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852448523] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:59:54,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:59:54,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 14:59:54,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337984030] [2021-12-22 14:59:54,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:59:54,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-22 14:59:54,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:59:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-22 14:59:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-22 14:59:54,397 INFO L87 Difference]: Start difference. First operand 12092 states and 17057 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 3 states have internal predecessors, (83), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 14:59:58,047 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 []