./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--scsi--initio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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--scsi--initio.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 9a12ad8c8f82d9497d9fb295ce6f252aae97c90123ce998a3f7bb078893d44d4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:23:34,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:23:34,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:23:34,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:23:34,476 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:23:34,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:23:34,480 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:23:34,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:23:34,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:23:34,488 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:23:34,489 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:23:34,491 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:23:34,491 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:23:34,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:23:34,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:23:34,499 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:23:34,500 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:23:34,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:23:34,502 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:23:34,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:23:34,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:23:34,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:23:34,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:23:34,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:23:34,515 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:23:34,517 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:23:34,517 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:23:34,518 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:23:34,518 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:23:34,519 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:23:34,519 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:23:34,520 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:23:34,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:23:34,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:23:34,523 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:23:34,524 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:23:34,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:23:34,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:23:34,525 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:23:34,526 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:23:34,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:23:34,530 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:23:34,552 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:23:34,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:23:34,553 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:23:34,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:23:34,554 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:23:34,555 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:23:34,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:23:34,556 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:23:34,556 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:23:34,556 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:23:34,557 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:23:34,557 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:23:34,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:23:34,557 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:23:34,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:23:34,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:23:34,558 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:23:34,558 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:23:34,558 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:23:34,558 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:23:34,558 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:23:34,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:23:34,559 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:23:34,559 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:23:34,559 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:23:34,559 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:23:34,559 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:23:34,560 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:23:34,560 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:23:34,560 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:23:34,560 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a12ad8c8f82d9497d9fb295ce6f252aae97c90123ce998a3f7bb078893d44d4 [2021-12-28 04:23:34,799 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:23:34,815 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:23:34,817 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:23:34,818 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:23:34,818 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:23:34,820 INFO L432 ainManager$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--scsi--initio.ko-entry_point.cil.out.i [2021-12-28 04:23:34,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be9f4fd35/3b18511cdf43416b915565ae6dee84fc/FLAGa283cbb69 [2021-12-28 04:23:35,520 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:23:35,521 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--scsi--initio.ko-entry_point.cil.out.i [2021-12-28 04:23:35,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be9f4fd35/3b18511cdf43416b915565ae6dee84fc/FLAGa283cbb69 [2021-12-28 04:23:35,892 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be9f4fd35/3b18511cdf43416b915565ae6dee84fc [2021-12-28 04:23:35,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:23:35,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:23:35,896 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:23:35,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:23:35,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:23:35,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:23:35" (1/1) ... [2021-12-28 04:23:35,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76af8eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:23:35, skipping insertion in model container [2021-12-28 04:23:35,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:23:35" (1/1) ... [2021-12-28 04:23:35,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:23:35,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:23:37,371 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--scsi--initio.ko-entry_point.cil.out.i[240484,240497] [2021-12-28 04:23:37,441 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:23:37,467 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:23:37,805 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--scsi--initio.ko-entry_point.cil.out.i[240484,240497] [2021-12-28 04:23:37,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:23:37,889 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:23:37,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:23:37 WrapperNode [2021-12-28 04:23:37,889 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:23:37,890 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:23:37,890 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:23:37,890 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:23:37,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:23:37" (1/1) ... [2021-12-28 04:23:37,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:23:37" (1/1) ... [2021-12-28 04:23:38,088 INFO L137 Inliner]: procedures = 250, calls = 2028, calls flagged for inlining = 112, calls inlined = 108, statements flattened = 4557 [2021-12-28 04:23:38,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:23:38,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:23:38,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:23:38,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:23:38,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:23:37" (1/1) ... [2021-12-28 04:23:38,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:23:37" (1/1) ... [2021-12-28 04:23:38,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:23:37" (1/1) ... [2021-12-28 04:23:38,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:23:37" (1/1) ... [2021-12-28 04:23:38,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:23:37" (1/1) ... [2021-12-28 04:23:38,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:23:37" (1/1) ... [2021-12-28 04:23:38,351 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:23:37" (1/1) ... [2021-12-28 04:23:38,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:23:38,389 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:23:38,389 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:23:38,389 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:23:38,390 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:23:37" (1/1) ... [2021-12-28 04:23:38,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:23:38,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:23:38,469 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) [2021-12-28 04:23:38,497 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 [2021-12-28 04:23:38,515 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 04:23:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 04:23:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:23:38,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:23:38,516 INFO L130 BoogieDeclarations]: Found specification of procedure initio_status_msg [2021-12-28 04:23:38,517 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_status_msg [2021-12-28 04:23:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:23:38,517 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:23:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure initio_select_atn_stop [2021-12-28 04:23:38,517 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_select_atn_stop [2021-12-28 04:23:38,517 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgin_accept [2021-12-28 04:23:38,517 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgin_accept [2021-12-28 04:23:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure initio_remove_one [2021-12-28 04:23:38,518 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_remove_one [2021-12-28 04:23:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:23:38,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:23:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2021-12-28 04:23:38,518 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2021-12-28 04:23:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-12-28 04:23:38,518 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-12-28 04:23:38,518 INFO L130 BoogieDeclarations]: Found specification of procedure int_initio_scsi_rst [2021-12-28 04:23:38,519 INFO L138 BoogieDeclarations]: Found implementation of procedure int_initio_scsi_rst [2021-12-28 04:23:38,519 INFO L130 BoogieDeclarations]: Found specification of procedure initio_abort_srb [2021-12-28 04:23:38,519 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_abort_srb [2021-12-28 04:23:38,519 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:23:38,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:23:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2021-12-28 04:23:38,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2021-12-28 04:23:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-12-28 04:23:38,520 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-12-28 04:23:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure initio_next_state [2021-12-28 04:23:38,520 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_next_state [2021-12-28 04:23:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 04:23:38,520 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 04:23:38,520 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:23:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:23:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure initio_unlink_pend_scb [2021-12-28 04:23:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_unlink_pend_scb [2021-12-28 04:23:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 04:23:38,521 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 04:23:38,521 INFO L130 BoogieDeclarations]: Found specification of procedure initio_append_busy_scb [2021-12-28 04:23:38,522 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_append_busy_scb [2021-12-28 04:23:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure dma_unmap_single_attrs [2021-12-28 04:23:38,522 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_unmap_single_attrs [2021-12-28 04:23:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:23:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_reject [2021-12-28 04:23:38,522 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_reject [2021-12-28 04:23:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:23:38,522 INFO L130 BoogieDeclarations]: Found specification of procedure initio_se2_rd_all [2021-12-28 04:23:38,522 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_se2_rd_all [2021-12-28 04:23:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 04:23:38,523 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 04:23:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:23:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:23:38,523 INFO L130 BoogieDeclarations]: Found specification of procedure initio_release_scb [2021-12-28 04:23:38,523 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_release_scb [2021-12-28 04:23:38,524 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_scsi [2021-12-28 04:23:38,524 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_scsi [2021-12-28 04:23:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-28 04:23:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-28 04:23:38,525 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-12-28 04:23:38,525 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-12-28 04:23:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure outl [2021-12-28 04:23:38,526 INFO L138 BoogieDeclarations]: Found implementation of procedure outl [2021-12-28 04:23:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 04:23:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-28 04:23:38,526 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-28 04:23:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_abort_targ [2021-12-28 04:23:38,526 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_abort_targ [2021-12-28 04:23:38,526 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-28 04:23:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-28 04:23:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 04:23:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure initio_se2_instr [2021-12-28 04:23:38,527 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_se2_instr [2021-12-28 04:23:38,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:23:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure initio_find_first_pend_scb [2021-12-28 04:23:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_find_first_pend_scb [2021-12-28 04:23:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-12-28 04:23:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-12-28 04:23:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure initio_unlink_busy_scb [2021-12-28 04:23:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_unlink_busy_scb [2021-12-28 04:23:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure initio_wait_done_disc [2021-12-28 04:23:38,528 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_wait_done_disc [2021-12-28 04:23:38,528 INFO L130 BoogieDeclarations]: Found specification of procedure __release_region [2021-12-28 04:23:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure __release_region [2021-12-28 04:23:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:23:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-12-28 04:23:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-12-28 04:23:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure initio_stop_bm [2021-12-28 04:23:38,529 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_stop_bm [2021-12-28 04:23:38,529 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-12-28 04:23:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-12-28 04:23:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure wait_tulip [2021-12-28 04:23:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_tulip [2021-12-28 04:23:38,530 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:23:38,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:23:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure initio_pop_busy_scb [2021-12-28 04:23:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_pop_busy_scb [2021-12-28 04:23:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure initio_bad_seq [2021-12-28 04:23:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_bad_seq [2021-12-28 04:23:38,531 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:23:38,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:23:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure int_initio_resel [2021-12-28 04:23:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure int_initio_resel [2021-12-28 04:23:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:23:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure dma_map_single_attrs [2021-12-28 04:23:38,532 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_map_single_attrs [2021-12-28 04:23:38,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:23:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgout_abort_tag [2021-12-28 04:23:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgout_abort_tag [2021-12-28 04:23:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-28 04:23:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-28 04:23:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:23:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-12-28 04:23:38,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-12-28 04:23:38,533 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2021-12-28 04:23:38,534 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2021-12-28 04:23:38,534 INFO L130 BoogieDeclarations]: Found specification of procedure initio_reset_scsi [2021-12-28 04:23:38,534 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_reset_scsi [2021-12-28 04:23:38,535 INFO L130 BoogieDeclarations]: Found specification of procedure initio_append_done_scb [2021-12-28 04:23:38,536 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_append_done_scb [2021-12-28 04:23:38,536 INFO L130 BoogieDeclarations]: Found specification of procedure initio_append_pend_scb [2021-12-28 04:23:38,537 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_append_pend_scb [2021-12-28 04:23:38,537 INFO L130 BoogieDeclarations]: Found specification of procedure initio_msgin [2021-12-28 04:23:38,537 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_msgin [2021-12-28 04:23:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-12-28 04:23:38,538 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-12-28 04:23:38,538 INFO L130 BoogieDeclarations]: Found specification of procedure tulip_main [2021-12-28 04:23:38,539 INFO L138 BoogieDeclarations]: Found implementation of procedure tulip_main [2021-12-28 04:23:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:23:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-28 04:23:38,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-28 04:23:38,543 INFO L130 BoogieDeclarations]: Found specification of procedure int_initio_busfree [2021-12-28 04:23:38,543 INFO L138 BoogieDeclarations]: Found implementation of procedure int_initio_busfree [2021-12-28 04:23:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure initio_sync_done [2021-12-28 04:23:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_sync_done [2021-12-28 04:23:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure initio_wait_disc [2021-12-28 04:23:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure initio_wait_disc [2021-12-28 04:23:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:23:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:23:38,544 INFO L130 BoogieDeclarations]: Found specification of procedure cpu_relax [2021-12-28 04:23:38,544 INFO L138 BoogieDeclarations]: Found implementation of procedure cpu_relax [2021-12-28 04:23:39,116 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:23:39,118 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:23:39,254 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:23:42,768 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:23:42,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:23:42,795 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:23:42,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:23:42 BoogieIcfgContainer [2021-12-28 04:23:42,799 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:23:42,801 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:23:42,801 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:23:42,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:23:42,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:23:35" (1/3) ... [2021-12-28 04:23:42,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58252a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:23:42, skipping insertion in model container [2021-12-28 04:23:42,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:23:37" (2/3) ... [2021-12-28 04:23:42,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58252a4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:23:42, skipping insertion in model container [2021-12-28 04:23:42,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:23:42" (3/3) ... [2021-12-28 04:23:42,805 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--initio.ko-entry_point.cil.out.i [2021-12-28 04:23:42,825 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:23:42,825 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:23:42,868 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:23:42,873 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 [2021-12-28 04:23:42,873 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:23:42,906 INFO L276 IsEmpty]: Start isEmpty. Operand has 1799 states, 1216 states have (on average 1.3338815789473684) internal successors, (1622), 1253 states have internal predecessors, (1622), 519 states have call successors, (519), 63 states have call predecessors, (519), 62 states have return successors, (513), 507 states have call predecessors, (513), 513 states have call successors, (513) [2021-12-28 04:23:42,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-28 04:23:42,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:23:42,914 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:23:42,914 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:23:42,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:23:42,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1180646586, now seen corresponding path program 1 times [2021-12-28 04:23:42,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:23:42,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511162598] [2021-12-28 04:23:42,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:23:42,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:23:43,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:23:43,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:23:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:23:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:23:43,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:23:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:23:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:23:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:23:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:23:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:23:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:23:43,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:23:43,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:23:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:23:43,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-28 04:23:43,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:23:43,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511162598] [2021-12-28 04:23:43,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511162598] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:23:43,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:23:43,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:23:43,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119446647] [2021-12-28 04:23:43,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:23:43,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:23:43,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:23:43,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:23:43,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:23:43,528 INFO L87 Difference]: Start difference. First operand has 1799 states, 1216 states have (on average 1.3338815789473684) internal successors, (1622), 1253 states have internal predecessors, (1622), 519 states have call successors, (519), 63 states have call predecessors, (519), 62 states have return successors, (513), 507 states have call predecessors, (513), 513 states have call successors, (513) Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:23:46,580 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 [] [2021-12-28 04:23:47,962 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:23:49,521 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:23:54,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:23:54,957 INFO L93 Difference]: Finished difference Result 3894 states and 5814 transitions. [2021-12-28 04:23:54,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:23:54,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2021-12-28 04:23:54,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:23:55,005 INFO L225 Difference]: With dead ends: 3894 [2021-12-28 04:23:55,006 INFO L226 Difference]: Without dead ends: 2084 [2021-12-28 04:23:55,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:23:55,022 INFO L933 BasicCegarLoop]: 2052 mSDtfsCounter, 1989 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 5528 mSolverCounterSat, 1578 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 7107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1578 IncrementalHoareTripleChecker+Valid, 5528 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2021-12-28 04:23:55,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2350 Valid, 3172 Invalid, 7107 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1578 Valid, 5528 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2021-12-28 04:23:55,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2021-12-28 04:23:55,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 1783. [2021-12-28 04:23:55,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1783 states, 1208 states have (on average 1.326158940397351) internal successors, (1602), 1237 states have internal predecessors, (1602), 513 states have call successors, (513), 62 states have call predecessors, (513), 61 states have return successors, (510), 504 states have call predecessors, (510), 510 states have call successors, (510) [2021-12-28 04:23:55,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1783 states to 1783 states and 2625 transitions. [2021-12-28 04:23:55,258 INFO L78 Accepts]: Start accepts. Automaton has 1783 states and 2625 transitions. Word has length 93 [2021-12-28 04:23:55,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:23:55,259 INFO L470 AbstractCegarLoop]: Abstraction has 1783 states and 2625 transitions. [2021-12-28 04:23:55,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-28 04:23:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1783 states and 2625 transitions. [2021-12-28 04:23:55,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-28 04:23:55,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:23:55,263 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:23:55,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:23:55,264 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:23:55,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:23:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1336409410, now seen corresponding path program 1 times [2021-12-28 04:23:55,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:23:55,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113462942] [2021-12-28 04:23:55,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:23:55,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:23:55,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:23:55,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:23:55,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:23:55,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:23:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:23:55,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:23:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:23:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:23:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:23:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:23:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:23:55,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:23:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:23:55,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:23:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:23:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-28 04:23:55,562 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:23:55,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113462942] [2021-12-28 04:23:55,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113462942] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:23:55,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:23:55,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 04:23:55,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731745408] [2021-12-28 04:23:55,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:23:55,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 04:23:55,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:23:55,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 04:23:55,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:23:55,568 INFO L87 Difference]: Start difference. First operand 1783 states and 2625 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-28 04:23:58,198 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:24:00,613 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:24:02,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:24:12,437 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:24:14,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:24:14,202 INFO L93 Difference]: Finished difference Result 5900 states and 8799 transitions. [2021-12-28 04:24:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 04:24:14,203 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 93 [2021-12-28 04:24:14,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:24:14,227 INFO L225 Difference]: With dead ends: 5900 [2021-12-28 04:24:14,227 INFO L226 Difference]: Without dead ends: 4133 [2021-12-28 04:24:14,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-28 04:24:14,238 INFO L933 BasicCegarLoop]: 2436 mSDtfsCounter, 5546 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 10583 mSolverCounterSat, 4380 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6007 SdHoareTripleChecker+Valid, 3928 SdHoareTripleChecker+Invalid, 14964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4380 IncrementalHoareTripleChecker+Valid, 10583 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.1s IncrementalHoareTripleChecker+Time [2021-12-28 04:24:14,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6007 Valid, 3928 Invalid, 14964 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4380 Valid, 10583 Invalid, 1 Unknown, 0 Unchecked, 18.1s Time] [2021-12-28 04:24:14,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4133 states. [2021-12-28 04:24:14,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4133 to 3531. [2021-12-28 04:24:14,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 2392 states have (on average 1.3269230769230769) internal successors, (3174), 2448 states have internal predecessors, (3174), 1016 states have call successors, (1016), 123 states have call predecessors, (1016), 122 states have return successors, (1013), 1001 states have call predecessors, (1013), 1013 states have call successors, (1013) [2021-12-28 04:24:14,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 5203 transitions. [2021-12-28 04:24:14,441 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 5203 transitions. Word has length 93 [2021-12-28 04:24:14,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:24:14,444 INFO L470 AbstractCegarLoop]: Abstraction has 3531 states and 5203 transitions. [2021-12-28 04:24:14,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (9), 6 states have call predecessors, (9), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-28 04:24:14,444 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 5203 transitions. [2021-12-28 04:24:14,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 04:24:14,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:24:14,451 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:24:14,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:24:14,452 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:24:14,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:24:14,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1883856890, now seen corresponding path program 1 times [2021-12-28 04:24:14,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:24:14,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949711998] [2021-12-28 04:24:14,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:24:14,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:24:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:24:14,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:24:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:14,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:24:14,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:14,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:24:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:24:14,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:24:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 04:24:14,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 04:24:14,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:24:14,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949711998] [2021-12-28 04:24:14,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949711998] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:24:14,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:24:14,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 04:24:14,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356549239] [2021-12-28 04:24:14,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:24:14,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 04:24:14,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:24:14,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 04:24:14,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:24:14,797 INFO L87 Difference]: Start difference. First operand 3531 states and 5203 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-28 04:24:18,875 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:24:20,908 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:24:26,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:24:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:24:28,354 INFO L93 Difference]: Finished difference Result 4151 states and 6213 transitions. [2021-12-28 04:24:28,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 04:24:28,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 113 [2021-12-28 04:24:28,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:24:28,404 INFO L225 Difference]: With dead ends: 4151 [2021-12-28 04:24:28,404 INFO L226 Difference]: Without dead ends: 4142 [2021-12-28 04:24:28,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-28 04:24:28,407 INFO L933 BasicCegarLoop]: 2048 mSDtfsCounter, 3861 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 5544 mSolverCounterSat, 3009 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3963 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 8555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3009 IncrementalHoareTripleChecker+Valid, 5544 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.3s IncrementalHoareTripleChecker+Time [2021-12-28 04:24:28,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3963 Valid, 3155 Invalid, 8555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3009 Valid, 5544 Invalid, 2 Unknown, 0 Unchecked, 13.3s Time] [2021-12-28 04:24:28,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2021-12-28 04:24:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 3531. [2021-12-28 04:24:28,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 2392 states have (on average 1.326505016722408) internal successors, (3173), 2448 states have internal predecessors, (3173), 1016 states have call successors, (1016), 123 states have call predecessors, (1016), 122 states have return successors, (1013), 1001 states have call predecessors, (1013), 1013 states have call successors, (1013) [2021-12-28 04:24:28,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 5202 transitions. [2021-12-28 04:24:28,580 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 5202 transitions. Word has length 113 [2021-12-28 04:24:28,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:24:28,582 INFO L470 AbstractCegarLoop]: Abstraction has 3531 states and 5202 transitions. [2021-12-28 04:24:28,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-28 04:24:28,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 5202 transitions. [2021-12-28 04:24:28,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-12-28 04:24:28,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:24:28,588 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:24:28,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 04:24:28,588 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:24:28,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:24:28,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1826598588, now seen corresponding path program 1 times [2021-12-28 04:24:28,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:24:28,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546255364] [2021-12-28 04:24:28,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:24:28,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:24:28,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:24:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:24:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:28,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:24:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:28,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:24:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:24:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:28,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:28,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:24:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 04:24:28,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:28,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:28,867 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 04:24:28,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:24:28,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546255364] [2021-12-28 04:24:28,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546255364] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:24:28,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:24:28,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 04:24:28,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111359874] [2021-12-28 04:24:28,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:24:28,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 04:24:28,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:24:28,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 04:24:28,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:24:28,870 INFO L87 Difference]: Start difference. First operand 3531 states and 5202 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 04:24:31,555 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 [] [2021-12-28 04:24:35,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:24:35,927 INFO L93 Difference]: Finished difference Result 4135 states and 6193 transitions. [2021-12-28 04:24:35,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 04:24:35,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 113 [2021-12-28 04:24:35,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:24:35,954 INFO L225 Difference]: With dead ends: 4135 [2021-12-28 04:24:35,954 INFO L226 Difference]: Without dead ends: 4132 [2021-12-28 04:24:35,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-28 04:24:35,961 INFO L933 BasicCegarLoop]: 2018 mSDtfsCounter, 4823 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 2392 mSolverCounterSat, 4505 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4922 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 6898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4505 IncrementalHoareTripleChecker+Valid, 2392 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2021-12-28 04:24:35,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4922 Valid, 2594 Invalid, 6898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4505 Valid, 2392 Invalid, 1 Unknown, 0 Unchecked, 6.8s Time] [2021-12-28 04:24:35,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4132 states. [2021-12-28 04:24:36,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4132 to 3530. [2021-12-28 04:24:36,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 2392 states have (on average 1.326086956521739) internal successors, (3172), 2447 states have internal predecessors, (3172), 1015 states have call successors, (1015), 123 states have call predecessors, (1015), 122 states have return successors, (1013), 1001 states have call predecessors, (1013), 1013 states have call successors, (1013) [2021-12-28 04:24:36,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 5200 transitions. [2021-12-28 04:24:36,236 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 5200 transitions. Word has length 113 [2021-12-28 04:24:36,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:24:36,237 INFO L470 AbstractCegarLoop]: Abstraction has 3530 states and 5200 transitions. [2021-12-28 04:24:36,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 04:24:36,237 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 5200 transitions. [2021-12-28 04:24:36,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-28 04:24:36,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:24:36,239 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:24:36,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 04:24:36,239 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:24:36,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:24:36,239 INFO L85 PathProgramCache]: Analyzing trace with hash -790812121, now seen corresponding path program 1 times [2021-12-28 04:24:36,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:24:36,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085483666] [2021-12-28 04:24:36,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:24:36,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:24:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:24:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:24:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:36,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:24:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:24:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:24:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:24:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 04:24:36,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:36,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 04:24:36,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:24:36,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085483666] [2021-12-28 04:24:36,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085483666] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:24:36,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:24:36,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 04:24:36,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778267375] [2021-12-28 04:24:36,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:24:36,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 04:24:36,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:24:36,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 04:24:36,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:24:36,451 INFO L87 Difference]: Start difference. First operand 3530 states and 5200 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 04:24:39,101 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 [] [2021-12-28 04:24:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:24:43,184 INFO L93 Difference]: Finished difference Result 4134 states and 6191 transitions. [2021-12-28 04:24:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 04:24:43,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 114 [2021-12-28 04:24:43,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:24:43,225 INFO L225 Difference]: With dead ends: 4134 [2021-12-28 04:24:43,226 INFO L226 Difference]: Without dead ends: 4131 [2021-12-28 04:24:43,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-28 04:24:43,243 INFO L933 BasicCegarLoop]: 2024 mSDtfsCounter, 4814 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 2394 mSolverCounterSat, 4482 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4913 SdHoareTripleChecker+Valid, 2598 SdHoareTripleChecker+Invalid, 6877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4482 IncrementalHoareTripleChecker+Valid, 2394 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-28 04:24:43,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4913 Valid, 2598 Invalid, 6877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4482 Valid, 2394 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-12-28 04:24:43,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4131 states. [2021-12-28 04:24:43,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4131 to 3529. [2021-12-28 04:24:43,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3529 states, 2392 states have (on average 1.3256688963210703) internal successors, (3171), 2446 states have internal predecessors, (3171), 1014 states have call successors, (1014), 123 states have call predecessors, (1014), 122 states have return successors, (1013), 1001 states have call predecessors, (1013), 1013 states have call successors, (1013) [2021-12-28 04:24:43,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3529 states to 3529 states and 5198 transitions. [2021-12-28 04:24:43,401 INFO L78 Accepts]: Start accepts. Automaton has 3529 states and 5198 transitions. Word has length 114 [2021-12-28 04:24:43,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:24:43,401 INFO L470 AbstractCegarLoop]: Abstraction has 3529 states and 5198 transitions. [2021-12-28 04:24:43,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-28 04:24:43,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3529 states and 5198 transitions. [2021-12-28 04:24:43,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-28 04:24:43,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:24:43,403 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:24:43,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 04:24:43,403 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:24:43,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:24:43,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1253802151, now seen corresponding path program 1 times [2021-12-28 04:24:43,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:24:43,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247379673] [2021-12-28 04:24:43,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:24:43,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:24:43,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:24:43,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:24:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:24:43,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:43,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:24:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 04:24:43,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:43,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-28 04:24:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-28 04:24:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:24:43,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:24:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:24:43,566 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-28 04:24:43,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:24:43,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247379673] [2021-12-28 04:24:43,566 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247379673] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:24:43,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:24:43,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 04:24:43,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111619519] [2021-12-28 04:24:43,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:24:43,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 04:24:43,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:24:43,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 04:24:43,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:24:43,568 INFO L87 Difference]: Start difference. First operand 3529 states and 5198 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (10), 6 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9)