./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.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-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.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 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 05:18:22,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 05:18:22,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 05:18:22,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 05:18:22,279 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 05:18:22,282 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 05:18:22,284 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 05:18:22,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 05:18:22,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 05:18:22,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 05:18:22,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 05:18:22,297 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 05:18:22,297 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 05:18:22,301 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 05:18:22,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 05:18:22,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 05:18:22,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 05:18:22,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 05:18:22,306 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 05:18:22,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 05:18:22,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 05:18:22,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 05:18:22,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 05:18:22,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 05:18:22,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 05:18:22,320 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 05:18:22,320 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 05:18:22,320 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 05:18:22,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 05:18:22,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 05:18:22,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 05:18:22,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 05:18:22,330 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 05:18:22,331 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 05:18:22,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 05:18:22,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 05:18:22,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 05:18:22,334 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 05:18:22,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 05:18:22,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 05:18:22,335 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 05:18:22,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 05:18:22,352 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 05:18:22,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 05:18:22,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 05:18:22,352 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 05:18:22,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 05:18:22,353 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 05:18:22,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 05:18:22,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 05:18:22,354 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 05:18:22,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 05:18:22,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 05:18:22,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 05:18:22,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 05:18:22,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 05:18:22,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 05:18:22,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 05:18:22,356 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 05:18:22,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 05:18:22,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 05:18:22,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 05:18:22,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 05:18:22,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:18:22,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 05:18:22,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 05:18:22,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 05:18:22,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 05:18:22,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 05:18:22,358 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 05:18:22,359 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 05:18:22,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 05:18:22,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 [2021-12-28 05:18:22,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 05:18:22,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 05:18:22,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 05:18:22,616 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 05:18:22,618 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 05:18:22,619 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-12-28 05:18:22,669 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3390d9af7/3a4deecdec1d4d108b9abfe39f982f6e/FLAG773970a8c [2021-12-28 05:18:23,392 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 05:18:23,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-12-28 05:18:23,435 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3390d9af7/3a4deecdec1d4d108b9abfe39f982f6e/FLAG773970a8c [2021-12-28 05:18:23,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3390d9af7/3a4deecdec1d4d108b9abfe39f982f6e [2021-12-28 05:18:23,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 05:18:23,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 05:18:23,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 05:18:23,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 05:18:23,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 05:18:23,525 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:18:23" (1/1) ... [2021-12-28 05:18:23,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bdbc2ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:18:23, skipping insertion in model container [2021-12-28 05:18:23,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:18:23" (1/1) ... [2021-12-28 05:18:23,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 05:18:23,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 05:18:25,717 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-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2021-12-28 05:18:25,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:18:25,850 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 05:18:26,230 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-challenges/linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[331724,331737] [2021-12-28 05:18:26,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:18:26,331 INFO L208 MainTranslator]: Completed translation [2021-12-28 05:18:26,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:18:26 WrapperNode [2021-12-28 05:18:26,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 05:18:26,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 05:18:26,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 05:18:26,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 05:18:26,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:18:26" (1/1) ... [2021-12-28 05:18:26,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:18:26" (1/1) ... [2021-12-28 05:18:26,747 INFO L137 Inliner]: procedures = 273, calls = 4073, calls flagged for inlining = 105, calls inlined = 96, statements flattened = 8857 [2021-12-28 05:18:26,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 05:18:26,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 05:18:26,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 05:18:26,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 05:18:26,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:18:26" (1/1) ... [2021-12-28 05:18:26,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:18:26" (1/1) ... [2021-12-28 05:18:26,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:18:26" (1/1) ... [2021-12-28 05:18:26,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:18:26" (1/1) ... [2021-12-28 05:18:26,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:18:26" (1/1) ... [2021-12-28 05:18:27,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:18:26" (1/1) ... [2021-12-28 05:18:27,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:18:26" (1/1) ... [2021-12-28 05:18:27,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 05:18:27,114 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 05:18:27,114 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 05:18:27,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 05:18:27,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:18:26" (1/1) ... [2021-12-28 05:18:27,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:18:27,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:18:27,140 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 05:18:27,147 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 05:18:27,168 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-28 05:18:27,169 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-28 05:18:27,169 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2021-12-28 05:18:27,169 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2021-12-28 05:18:27,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-28 05:18:27,169 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-28 05:18:27,169 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-28 05:18:27,170 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-28 05:18:27,170 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-12-28 05:18:27,170 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 05:18:27,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 05:18:27,171 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2021-12-28 05:18:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2021-12-28 05:18:27,171 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-12-28 05:18:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-12-28 05:18:27,171 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2021-12-28 05:18:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2021-12-28 05:18:27,171 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-28 05:18:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-28 05:18:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2021-12-28 05:18:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2021-12-28 05:18:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2021-12-28 05:18:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2021-12-28 05:18:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 05:18:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 05:18:27,172 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2021-12-28 05:18:27,172 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2021-12-28 05:18:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2021-12-28 05:18:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2021-12-28 05:18:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_osst_tape [2021-12-28 05:18:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_osst_tape [2021-12-28 05:18:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2021-12-28 05:18:27,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2021-12-28 05:18:27,173 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 05:18:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 05:18:27,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 05:18:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 05:18:27,174 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-28 05:18:27,174 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-28 05:18:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2021-12-28 05:18:27,175 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2021-12-28 05:18:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2021-12-28 05:18:27,175 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2021-12-28 05:18:27,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-28 05:18:27,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-28 05:18:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2021-12-28 05:18:27,176 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2021-12-28 05:18:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 05:18:27,176 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 05:18:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2021-12-28 05:18:27,176 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2021-12-28 05:18:27,176 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2021-12-28 05:18:27,177 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2021-12-28 05:18:27,177 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-28 05:18:27,177 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-28 05:18:27,177 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2021-12-28 05:18:27,177 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2021-12-28 05:18:27,177 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2021-12-28 05:18:27,178 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2021-12-28 05:18:27,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_osst_int_mutex [2021-12-28 05:18:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_osst_int_mutex [2021-12-28 05:18:27,179 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2021-12-28 05:18:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2021-12-28 05:18:27,179 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2021-12-28 05:18:27,179 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2021-12-28 05:18:27,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 05:18:27,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_osst_int_mutex [2021-12-28 05:18:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_osst_int_mutex [2021-12-28 05:18:27,180 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-28 05:18:27,180 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2021-12-28 05:18:27,180 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2021-12-28 05:18:27,180 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-12-28 05:18:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-12-28 05:18:27,181 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2021-12-28 05:18:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2021-12-28 05:18:27,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 05:18:27,181 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2021-12-28 05:18:27,181 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2021-12-28 05:18:27,181 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2021-12-28 05:18:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2021-12-28 05:18:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-28 05:18:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-28 05:18:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2021-12-28 05:18:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2021-12-28 05:18:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-28 05:18:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-28 05:18:27,182 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2021-12-28 05:18:27,182 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2021-12-28 05:18:27,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 05:18:27,183 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2021-12-28 05:18:27,183 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2021-12-28 05:18:27,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 05:18:27,183 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-28 05:18:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-28 05:18:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-28 05:18:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-28 05:18:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 05:18:27,184 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 05:18:27,184 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2021-12-28 05:18:27,185 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2021-12-28 05:18:27,185 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-28 05:18:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-28 05:18:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2021-12-28 05:18:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2021-12-28 05:18:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2021-12-28 05:18:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2021-12-28 05:18:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-28 05:18:27,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-28 05:18:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 05:18:27,186 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-28 05:18:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-28 05:18:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2021-12-28 05:18:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2021-12-28 05:18:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-12-28 05:18:27,187 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-12-28 05:18:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 05:18:27,187 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2021-12-28 05:18:27,188 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2021-12-28 05:18:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 05:18:27,188 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2021-12-28 05:18:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2021-12-28 05:18:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2021-12-28 05:18:27,190 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2021-12-28 05:18:27,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 05:18:27,191 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 05:18:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2021-12-28 05:18:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2021-12-28 05:18:27,192 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2021-12-28 05:18:27,192 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2021-12-28 05:18:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2021-12-28 05:18:27,197 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2021-12-28 05:18:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2021-12-28 05:18:27,197 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2021-12-28 05:18:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-28 05:18:27,197 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-28 05:18:27,197 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2021-12-28 05:18:27,198 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2021-12-28 05:18:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-12-28 05:18:27,198 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-12-28 05:18:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 05:18:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-28 05:18:27,198 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-28 05:18:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2021-12-28 05:18:27,198 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2021-12-28 05:18:27,198 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2021-12-28 05:18:27,198 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2021-12-28 05:18:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2021-12-28 05:18:27,199 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2021-12-28 05:18:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 05:18:27,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 05:18:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2021-12-28 05:18:27,199 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2021-12-28 05:18:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 05:18:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-12-28 05:18:27,199 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-12-28 05:18:27,199 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2021-12-28 05:18:27,200 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2021-12-28 05:18:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-28 05:18:27,200 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-28 05:18:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 05:18:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2021-12-28 05:18:27,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2021-12-28 05:18:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2021-12-28 05:18:27,200 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2021-12-28 05:18:27,200 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-12-28 05:18:27,200 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-12-28 05:18:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 05:18:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-28 05:18:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2021-12-28 05:18:27,201 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2021-12-28 05:18:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2021-12-28 05:18:27,201 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2021-12-28 05:18:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2021-12-28 05:18:27,201 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2021-12-28 05:18:27,201 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-28 05:18:27,201 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-28 05:18:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-12-28 05:18:27,202 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-12-28 05:18:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2021-12-28 05:18:27,202 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2021-12-28 05:18:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2021-12-28 05:18:27,202 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2021-12-28 05:18:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2021-12-28 05:18:27,202 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2021-12-28 05:18:27,202 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2021-12-28 05:18:27,202 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2021-12-28 05:18:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-28 05:18:27,203 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-28 05:18:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2021-12-28 05:18:27,203 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2021-12-28 05:18:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2021-12-28 05:18:27,203 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2021-12-28 05:18:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2021-12-28 05:18:27,203 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2021-12-28 05:18:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 05:18:27,203 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2021-12-28 05:18:27,204 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2021-12-28 05:18:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2021-12-28 05:18:27,204 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2021-12-28 05:18:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 05:18:27,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 05:18:27,204 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-28 05:18:27,204 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-28 05:18:27,975 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 05:18:27,977 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 05:18:38,810 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 05:18:38,835 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 05:18:38,835 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 05:18:38,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:18:38 BoogieIcfgContainer [2021-12-28 05:18:38,840 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 05:18:38,842 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 05:18:38,842 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 05:18:38,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 05:18:38,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 05:18:23" (1/3) ... [2021-12-28 05:18:38,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ec6280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:18:38, skipping insertion in model container [2021-12-28 05:18:38,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:18:26" (2/3) ... [2021-12-28 05:18:38,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ec6280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:18:38, skipping insertion in model container [2021-12-28 05:18:38,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:18:38" (3/3) ... [2021-12-28 05:18:38,847 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-12-28 05:18:38,851 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 05:18:38,852 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 05:18:38,906 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 05:18:38,913 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 05:18:38,913 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 05:18:38,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 2992 states, 2295 states have (on average 1.45359477124183) internal successors, (3336), 2321 states have internal predecessors, (3336), 603 states have call successors, (603), 92 states have call predecessors, (603), 92 states have return successors, (603), 600 states have call predecessors, (603), 603 states have call successors, (603) [2021-12-28 05:18:38,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-28 05:18:38,980 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:18:38,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:18:38,981 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:18:38,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:18:38,985 INFO L85 PathProgramCache]: Analyzing trace with hash 217154096, now seen corresponding path program 1 times [2021-12-28 05:18:38,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:18:38,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785800045] [2021-12-28 05:18:38,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:18:38,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:18:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:39,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 05:18:39,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 05:18:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 05:18:39,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:39,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 05:18:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:39,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:18:39,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:18:39,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785800045] [2021-12-28 05:18:39,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785800045] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:18:39,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:18:39,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:18:39,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861900694] [2021-12-28 05:18:39,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:18:39,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:18:39,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:18:39,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:18:39,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:18:39,522 INFO L87 Difference]: Start difference. First operand has 2992 states, 2295 states have (on average 1.45359477124183) internal successors, (3336), 2321 states have internal predecessors, (3336), 603 states have call successors, (603), 92 states have call predecessors, (603), 92 states have return successors, (603), 600 states have call predecessors, (603), 603 states have call successors, (603) Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-28 05:18:42,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:18:42,567 INFO L93 Difference]: Finished difference Result 6164 states and 9664 transitions. [2021-12-28 05:18:42,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:18:42,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2021-12-28 05:18:42,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:18:42,613 INFO L225 Difference]: With dead ends: 6164 [2021-12-28 05:18:42,613 INFO L226 Difference]: Without dead ends: 3170 [2021-12-28 05:18:42,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:18:42,643 INFO L933 BasicCegarLoop]: 4424 mSDtfsCounter, 4949 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5321 SdHoareTripleChecker+Valid, 7206 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-28 05:18:42,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5321 Valid, 7206 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1014 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-28 05:18:42,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2021-12-28 05:18:42,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2981. [2021-12-28 05:18:42,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2981 states, 2286 states have (on average 1.4510061242344707) internal successors, (3317), 2310 states have internal predecessors, (3317), 603 states have call successors, (603), 92 states have call predecessors, (603), 91 states have return successors, (595), 592 states have call predecessors, (595), 595 states have call successors, (595) [2021-12-28 05:18:42,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 4515 transitions. [2021-12-28 05:18:42,860 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 4515 transitions. Word has length 38 [2021-12-28 05:18:42,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:18:42,860 INFO L470 AbstractCegarLoop]: Abstraction has 2981 states and 4515 transitions. [2021-12-28 05:18:42,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-28 05:18:42,861 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 4515 transitions. [2021-12-28 05:18:42,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-28 05:18:42,862 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:18:42,862 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:18:42,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 05:18:42,863 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:18:42,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:18:42,863 INFO L85 PathProgramCache]: Analyzing trace with hash 239786350, now seen corresponding path program 1 times [2021-12-28 05:18:42,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:18:42,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548006955] [2021-12-28 05:18:42,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:18:42,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:18:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:42,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 05:18:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:42,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 05:18:42,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:43,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 05:18:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:43,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 05:18:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:43,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:18:43,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:18:43,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548006955] [2021-12-28 05:18:43,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548006955] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:18:43,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:18:43,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:18:43,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699273912] [2021-12-28 05:18:43,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:18:43,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:18:43,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:18:43,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:18:43,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:18:43,034 INFO L87 Difference]: Start difference. First operand 2981 states and 4515 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-28 05:18:46,642 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 05:18:51,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:18:51,699 INFO L93 Difference]: Finished difference Result 9219 states and 14105 transitions. [2021-12-28 05:18:51,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:18:51,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2021-12-28 05:18:51,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:18:51,739 INFO L225 Difference]: With dead ends: 9219 [2021-12-28 05:18:51,740 INFO L226 Difference]: Without dead ends: 6246 [2021-12-28 05:18:51,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:18:51,755 INFO L933 BasicCegarLoop]: 4922 mSDtfsCounter, 5538 mSDsluCounter, 6524 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 1608 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5998 SdHoareTripleChecker+Valid, 11446 SdHoareTripleChecker+Invalid, 3718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1608 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-12-28 05:18:51,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5998 Valid, 11446 Invalid, 3718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1608 Valid, 2109 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-12-28 05:18:51,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6246 states. [2021-12-28 05:18:51,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6246 to 5851. [2021-12-28 05:18:51,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5851 states, 4496 states have (on average 1.4519572953736655) internal successors, (6528), 4533 states have internal predecessors, (6528), 1174 states have call successors, (1174), 181 states have call predecessors, (1174), 180 states have return successors, (1166), 1160 states have call predecessors, (1166), 1166 states have call successors, (1166) [2021-12-28 05:18:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 8868 transitions. [2021-12-28 05:18:51,953 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 8868 transitions. Word has length 38 [2021-12-28 05:18:51,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:18:51,954 INFO L470 AbstractCegarLoop]: Abstraction has 5851 states and 8868 transitions. [2021-12-28 05:18:51,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-12-28 05:18:51,954 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 8868 transitions. [2021-12-28 05:18:51,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-28 05:18:51,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:18:51,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:18:51,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 05:18:51,958 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:18:51,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:18:51,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1625989744, now seen corresponding path program 1 times [2021-12-28 05:18:51,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:18:51,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183122840] [2021-12-28 05:18:51,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:18:51,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:18:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:52,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 05:18:52,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:52,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 05:18:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:52,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 05:18:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:52,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 05:18:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:52,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:18:52,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:18:52,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183122840] [2021-12-28 05:18:52,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183122840] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:18:52,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:18:52,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:18:52,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4852495] [2021-12-28 05:18:52,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:18:52,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:18:52,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:18:52,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:18:52,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:18:52,152 INFO L87 Difference]: Start difference. First operand 5851 states and 8868 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-28 05:18:58,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:18:58,504 INFO L93 Difference]: Finished difference Result 18642 states and 29217 transitions. [2021-12-28 05:18:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 05:18:58,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 38 [2021-12-28 05:18:58,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:18:58,591 INFO L225 Difference]: With dead ends: 18642 [2021-12-28 05:18:58,591 INFO L226 Difference]: Without dead ends: 12831 [2021-12-28 05:18:58,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 05:18:58,627 INFO L933 BasicCegarLoop]: 7344 mSDtfsCounter, 4597 mSDsluCounter, 14250 mSDsCounter, 0 mSdLazyCounter, 3392 mSolverCounterSat, 1403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5192 SdHoareTripleChecker+Valid, 21594 SdHoareTripleChecker+Invalid, 4795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1403 IncrementalHoareTripleChecker+Valid, 3392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-28 05:18:58,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5192 Valid, 21594 Invalid, 4795 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1403 Valid, 3392 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-12-28 05:18:58,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12831 states. [2021-12-28 05:18:58,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12831 to 5853. [2021-12-28 05:18:58,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5853 states, 4498 states have (on average 1.4517563361493997) internal successors, (6530), 4535 states have internal predecessors, (6530), 1174 states have call successors, (1174), 181 states have call predecessors, (1174), 180 states have return successors, (1166), 1160 states have call predecessors, (1166), 1166 states have call successors, (1166) [2021-12-28 05:18:58,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5853 states to 5853 states and 8870 transitions. [2021-12-28 05:18:58,934 INFO L78 Accepts]: Start accepts. Automaton has 5853 states and 8870 transitions. Word has length 38 [2021-12-28 05:18:58,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:18:58,935 INFO L470 AbstractCegarLoop]: Abstraction has 5853 states and 8870 transitions. [2021-12-28 05:18:58,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-28 05:18:58,936 INFO L276 IsEmpty]: Start isEmpty. Operand 5853 states and 8870 transitions. [2021-12-28 05:18:58,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-28 05:18:58,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:18:58,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:18:58,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 05:18:58,941 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:18:58,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:18:58,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1138161737, now seen corresponding path program 1 times [2021-12-28 05:18:58,942 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:18:58,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12358128] [2021-12-28 05:18:58,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:18:58,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:18:58,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:59,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 05:18:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:59,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 05:18:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:59,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 05:18:59,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:59,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 05:18:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 05:18:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:18:59,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:18:59,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:18:59,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12358128] [2021-12-28 05:18:59,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12358128] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:18:59,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:18:59,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:18:59,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597970906] [2021-12-28 05:18:59,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:18:59,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:18:59,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:18:59,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:18:59,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:18:59,105 INFO L87 Difference]: Start difference. First operand 5853 states and 8870 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 05:19:01,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:19:01,780 INFO L93 Difference]: Finished difference Result 6233 states and 9584 transitions. [2021-12-28 05:19:01,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:19:01,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2021-12-28 05:19:01,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:19:01,815 INFO L225 Difference]: With dead ends: 6233 [2021-12-28 05:19:01,815 INFO L226 Difference]: Without dead ends: 6230 [2021-12-28 05:19:01,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:19:01,822 INFO L933 BasicCegarLoop]: 4409 mSDtfsCounter, 4907 mSDsluCounter, 2778 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5274 SdHoareTripleChecker+Valid, 7187 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1012 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-28 05:19:01,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5274 Valid, 7187 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1012 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-28 05:19:01,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2021-12-28 05:19:02,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 5852. [2021-12-28 05:19:02,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5852 states, 4498 states have (on average 1.4515340151178302) internal successors, (6529), 4534 states have internal predecessors, (6529), 1173 states have call successors, (1173), 181 states have call predecessors, (1173), 180 states have return successors, (1166), 1160 states have call predecessors, (1166), 1166 states have call successors, (1166) [2021-12-28 05:19:02,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 8868 transitions. [2021-12-28 05:19:02,057 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 8868 transitions. Word has length 43 [2021-12-28 05:19:02,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:19:02,057 INFO L470 AbstractCegarLoop]: Abstraction has 5852 states and 8868 transitions. [2021-12-28 05:19:02,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 05:19:02,058 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 8868 transitions. [2021-12-28 05:19:02,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-28 05:19:02,058 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:19:02,059 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:19:02,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 05:19:02,059 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:19:02,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:19:02,059 INFO L85 PathProgramCache]: Analyzing trace with hash 922151277, now seen corresponding path program 1 times [2021-12-28 05:19:02,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:19:02,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473028957] [2021-12-28 05:19:02,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:19:02,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:19:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:02,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 05:19:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:02,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 05:19:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:02,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 05:19:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:02,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 05:19:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:02,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 05:19:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:19:02,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:19:02,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473028957] [2021-12-28 05:19:02,194 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473028957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:19:02,194 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:19:02,194 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:19:02,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413254326] [2021-12-28 05:19:02,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:19:02,195 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:19:02,195 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:19:02,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:19:02,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:19:02,196 INFO L87 Difference]: Start difference. First operand 5852 states and 8868 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 05:19:07,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:19:07,795 INFO L93 Difference]: Finished difference Result 18176 states and 27858 transitions. [2021-12-28 05:19:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:19:07,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2021-12-28 05:19:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:19:07,861 INFO L225 Difference]: With dead ends: 18176 [2021-12-28 05:19:07,861 INFO L226 Difference]: Without dead ends: 12368 [2021-12-28 05:19:07,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:19:07,886 INFO L933 BasicCegarLoop]: 6682 mSDtfsCounter, 5411 mSDsluCounter, 7858 mSDsCounter, 0 mSdLazyCounter, 2144 mSolverCounterSat, 1394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5870 SdHoareTripleChecker+Valid, 14540 SdHoareTripleChecker+Invalid, 3538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1394 IncrementalHoareTripleChecker+Valid, 2144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:19:07,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5870 Valid, 14540 Invalid, 3538 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1394 Valid, 2144 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-28 05:19:07,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12368 states. [2021-12-28 05:19:08,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12368 to 11593. [2021-12-28 05:19:08,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11593 states, 8927 states have (on average 1.4532317687913072) internal successors, (12973), 8998 states have internal predecessors, (12973), 2309 states have call successors, (2309), 358 states have call predecessors, (2309), 356 states have return successors, (2310), 2282 states have call predecessors, (2310), 2298 states have call successors, (2310) [2021-12-28 05:19:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11593 states to 11593 states and 17592 transitions. [2021-12-28 05:19:08,274 INFO L78 Accepts]: Start accepts. Automaton has 11593 states and 17592 transitions. Word has length 44 [2021-12-28 05:19:08,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:19:08,276 INFO L470 AbstractCegarLoop]: Abstraction has 11593 states and 17592 transitions. [2021-12-28 05:19:08,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 05:19:08,276 INFO L276 IsEmpty]: Start isEmpty. Operand 11593 states and 17592 transitions. [2021-12-28 05:19:08,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-28 05:19:08,278 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:19:08,278 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:19:08,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 05:19:08,278 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:19:08,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:19:08,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1479200820, now seen corresponding path program 1 times [2021-12-28 05:19:08,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:19:08,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898731754] [2021-12-28 05:19:08,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:19:08,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:19:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:08,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 05:19:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:08,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 05:19:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:08,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 05:19:08,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:08,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 05:19:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:08,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 05:19:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:08,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:19:08,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:19:08,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898731754] [2021-12-28 05:19:08,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898731754] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:19:08,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:19:08,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:19:08,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787163368] [2021-12-28 05:19:08,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:19:08,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:19:08,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:19:08,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:19:08,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:19:08,450 INFO L87 Difference]: Start difference. First operand 11593 states and 17592 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 05:19:11,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:19:11,238 INFO L93 Difference]: Finished difference Result 12351 states and 19018 transitions. [2021-12-28 05:19:11,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:19:11,239 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 45 [2021-12-28 05:19:11,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:19:11,291 INFO L225 Difference]: With dead ends: 12351 [2021-12-28 05:19:11,292 INFO L226 Difference]: Without dead ends: 12348 [2021-12-28 05:19:11,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:19:11,303 INFO L933 BasicCegarLoop]: 4403 mSDtfsCounter, 4903 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5274 SdHoareTripleChecker+Valid, 7176 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1011 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-28 05:19:11,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5274 Valid, 7176 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1011 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-28 05:19:11,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2021-12-28 05:19:11,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 11592. [2021-12-28 05:19:11,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11592 states, 8927 states have (on average 1.4531197490758374) internal successors, (12972), 8997 states have internal predecessors, (12972), 2308 states have call successors, (2308), 358 states have call predecessors, (2308), 356 states have return successors, (2310), 2282 states have call predecessors, (2310), 2298 states have call successors, (2310) [2021-12-28 05:19:11,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11592 states to 11592 states and 17590 transitions. [2021-12-28 05:19:11,695 INFO L78 Accepts]: Start accepts. Automaton has 11592 states and 17590 transitions. Word has length 45 [2021-12-28 05:19:11,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:19:11,696 INFO L470 AbstractCegarLoop]: Abstraction has 11592 states and 17590 transitions. [2021-12-28 05:19:11,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 05:19:11,696 INFO L276 IsEmpty]: Start isEmpty. Operand 11592 states and 17590 transitions. [2021-12-28 05:19:11,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-28 05:19:11,697 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:19:11,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:19:11,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 05:19:11,698 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:19:11,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:19:11,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1388300368, now seen corresponding path program 1 times [2021-12-28 05:19:11,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:19:11,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561771363] [2021-12-28 05:19:11,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:19:11,699 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:19:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:11,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 05:19:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:11,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 05:19:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:11,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 05:19:11,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:11,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 05:19:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:11,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 05:19:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:19:11,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:19:11,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561771363] [2021-12-28 05:19:11,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561771363] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:19:11,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:19:11,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:19:11,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747764902] [2021-12-28 05:19:11,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:19:11,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:19:11,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:19:11,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:19:11,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:19:11,847 INFO L87 Difference]: Start difference. First operand 11592 states and 17590 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 05:19:16,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:19:16,022 INFO L93 Difference]: Finished difference Result 17892 states and 27043 transitions. [2021-12-28 05:19:16,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 05:19:16,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2021-12-28 05:19:16,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:19:16,130 INFO L225 Difference]: With dead ends: 17892 [2021-12-28 05:19:16,131 INFO L226 Difference]: Without dead ends: 17822 [2021-12-28 05:19:16,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:19:16,158 INFO L933 BasicCegarLoop]: 4602 mSDtfsCounter, 3880 mSDsluCounter, 5615 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 1275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4185 SdHoareTripleChecker+Valid, 10217 SdHoareTripleChecker+Invalid, 2923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1275 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-12-28 05:19:16,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4185 Valid, 10217 Invalid, 2923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1275 Valid, 1648 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2021-12-28 05:19:16,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17822 states. [2021-12-28 05:19:16,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17822 to 16440. [2021-12-28 05:19:16,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16440 states, 12508 states have (on average 1.42972497601535) internal successors, (17883), 12600 states have internal predecessors, (17883), 3310 states have call successors, (3310), 623 states have call predecessors, (3310), 621 states have return successors, (3314), 3283 states have call predecessors, (3314), 3302 states have call successors, (3314) [2021-12-28 05:19:16,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16440 states to 16440 states and 24507 transitions. [2021-12-28 05:19:16,736 INFO L78 Accepts]: Start accepts. Automaton has 16440 states and 24507 transitions. Word has length 46 [2021-12-28 05:19:16,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:19:16,737 INFO L470 AbstractCegarLoop]: Abstraction has 16440 states and 24507 transitions. [2021-12-28 05:19:16,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-12-28 05:19:16,737 INFO L276 IsEmpty]: Start isEmpty. Operand 16440 states and 24507 transitions. [2021-12-28 05:19:16,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-28 05:19:16,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:19:16,741 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:19:16,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 05:19:16,741 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 05:19:16,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:19:16,741 INFO L85 PathProgramCache]: Analyzing trace with hash -237158953, now seen corresponding path program 1 times [2021-12-28 05:19:16,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:19:16,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242353846] [2021-12-28 05:19:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:19:16,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:19:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-28 05:19:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:16,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-28 05:19:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:16,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-28 05:19:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:16,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 05:19:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:16,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-28 05:19:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:16,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-28 05:19:16,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:16,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-28 05:19:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:16,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-28 05:19:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:16,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-28 05:19:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:16,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-28 05:19:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:19:16,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 05:19:16,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:19:16,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242353846] [2021-12-28 05:19:16,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242353846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:19:16,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:19:16,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-28 05:19:17,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772951073] [2021-12-28 05:19:17,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:19:17,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 05:19:17,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:19:17,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 05:19:17,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:19:17,002 INFO L87 Difference]: Start difference. First operand 16440 states and 24507 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)