./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 e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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-e19ca92 [2021-12-22 16:00:10,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 16:00:10,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 16:00:10,629 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 16:00:10,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 16:00:10,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 16:00:10,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 16:00:10,640 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 16:00:10,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 16:00:10,645 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 16:00:10,646 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 16:00:10,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 16:00:10,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 16:00:10,649 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 16:00:10,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 16:00:10,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 16:00:10,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 16:00:10,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 16:00:10,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 16:00:10,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 16:00:10,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 16:00:10,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 16:00:10,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 16:00:10,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 16:00:10,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 16:00:10,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 16:00:10,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 16:00:10,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 16:00:10,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 16:00:10,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 16:00:10,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 16:00:10,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 16:00:10,672 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 16:00:10,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 16:00:10,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 16:00:10,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 16:00:10,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 16:00:10,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 16:00:10,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 16:00:10,675 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 16:00:10,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 16:00:10,677 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 16:00:10,703 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 16:00:10,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 16:00:10,703 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 16:00:10,703 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 16:00:10,704 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 16:00:10,704 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 16:00:10,705 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 16:00:10,705 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 16:00:10,705 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 16:00:10,705 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 16:00:10,706 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 16:00:10,706 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 16:00:10,706 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 16:00:10,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 16:00:10,706 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 16:00:10,706 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 16:00:10,706 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 16:00:10,706 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 16:00:10,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 16:00:10,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 16:00:10,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 16:00:10,707 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:00:10,707 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 16:00:10,707 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 16:00:10,708 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 16:00:10,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 16:00:10,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 16:00:10,708 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 16:00:10,708 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 16:00:10,708 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 16:00:10,708 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 16:00:10,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 [2021-12-22 16:00:10,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 16:00:10,904 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 16:00:10,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 16:00:10,908 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 16:00:10,908 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 16:00:10,909 INFO L432 ainManager$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 [2021-12-22 16:00:10,997 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4741a918/eccd9b07ccbf46dfb9fe456df204cb92/FLAGf7327decb [2021-12-22 16:00:11,554 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 16:00:11,555 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 [2021-12-22 16:00:11,591 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4741a918/eccd9b07ccbf46dfb9fe456df204cb92/FLAGf7327decb [2021-12-22 16:00:12,000 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4741a918/eccd9b07ccbf46dfb9fe456df204cb92 [2021-12-22 16:00:12,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 16:00:12,003 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 16:00:12,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 16:00:12,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 16:00:12,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 16:00:12,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:00:12" (1/1) ... [2021-12-22 16:00:12,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e0e4566 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:00:12, skipping insertion in model container [2021-12-22 16:00:12,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:00:12" (1/1) ... [2021-12-22 16:00:12,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 16:00:12,169 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 16:00:13,491 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] [2021-12-22 16:00:13,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:00:13,579 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 16:00:13,927 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] [2021-12-22 16:00:13,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 16:00:14,000 INFO L208 MainTranslator]: Completed translation [2021-12-22 16:00:14,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:00:14 WrapperNode [2021-12-22 16:00:14,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 16:00:14,002 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 16:00:14,002 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 16:00:14,003 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 16:00:14,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:00:14" (1/1) ... [2021-12-22 16:00:14,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:00:14" (1/1) ... [2021-12-22 16:00:14,291 INFO L137 Inliner]: procedures = 273, calls = 4073, calls flagged for inlining = 105, calls inlined = 96, statements flattened = 8857 [2021-12-22 16:00:14,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 16:00:14,292 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 16:00:14,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 16:00:14,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 16:00:14,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:00:14" (1/1) ... [2021-12-22 16:00:14,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:00:14" (1/1) ... [2021-12-22 16:00:14,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:00:14" (1/1) ... [2021-12-22 16:00:14,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:00:14" (1/1) ... [2021-12-22 16:00:14,562 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:00:14" (1/1) ... [2021-12-22 16:00:14,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:00:14" (1/1) ... [2021-12-22 16:00:14,618 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:00:14" (1/1) ... [2021-12-22 16:00:14,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 16:00:14,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 16:00:14,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 16:00:14,714 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 16:00:14,715 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:00:14" (1/1) ... [2021-12-22 16:00:14,720 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 16:00:14,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 16:00:14,748 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 16:00:14,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 16:00:14,777 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-22 16:00:14,778 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-22 16:00:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2021-12-22 16:00:14,778 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2021-12-22 16:00:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-22 16:00:14,778 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-22 16:00:14,778 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-22 16:00:14,778 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-22 16:00:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-12-22 16:00:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-22 16:00:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-22 16:00:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2021-12-22 16:00:14,779 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2021-12-22 16:00:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-12-22 16:00:14,779 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-12-22 16:00:14,779 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2021-12-22 16:00:14,780 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2021-12-22 16:00:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-22 16:00:14,780 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-22 16:00:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2021-12-22 16:00:14,780 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2021-12-22 16:00:14,780 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2021-12-22 16:00:14,780 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2021-12-22 16:00:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-22 16:00:14,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-22 16:00:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2021-12-22 16:00:14,781 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2021-12-22 16:00:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2021-12-22 16:00:14,781 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2021-12-22 16:00:14,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_osst_tape [2021-12-22 16:00:14,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_osst_tape [2021-12-22 16:00:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2021-12-22 16:00:14,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2021-12-22 16:00:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-22 16:00:14,782 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-22 16:00:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-22 16:00:14,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-22 16:00:14,782 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-22 16:00:14,783 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-22 16:00:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2021-12-22 16:00:14,783 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2021-12-22 16:00:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2021-12-22 16:00:14,783 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2021-12-22 16:00:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-22 16:00:14,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-22 16:00:14,783 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2021-12-22 16:00:14,784 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2021-12-22 16:00:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-22 16:00:14,784 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-22 16:00:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2021-12-22 16:00:14,784 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2021-12-22 16:00:14,784 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2021-12-22 16:00:14,784 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2021-12-22 16:00:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-22 16:00:14,785 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-22 16:00:14,785 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2021-12-22 16:00:14,785 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2021-12-22 16:00:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2021-12-22 16:00:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2021-12-22 16:00:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_osst_int_mutex [2021-12-22 16:00:14,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_osst_int_mutex [2021-12-22 16:00:14,786 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2021-12-22 16:00:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2021-12-22 16:00:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2021-12-22 16:00:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2021-12-22 16:00:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 16:00:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_osst_int_mutex [2021-12-22 16:00:14,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_osst_int_mutex [2021-12-22 16:00:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-22 16:00:14,787 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2021-12-22 16:00:14,788 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2021-12-22 16:00:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-12-22 16:00:14,788 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-12-22 16:00:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2021-12-22 16:00:14,788 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2021-12-22 16:00:14,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 16:00:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2021-12-22 16:00:14,789 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2021-12-22 16:00:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2021-12-22 16:00:14,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2021-12-22 16:00:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-22 16:00:14,789 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-22 16:00:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2021-12-22 16:00:14,789 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2021-12-22 16:00:14,789 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-22 16:00:14,790 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-22 16:00:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2021-12-22 16:00:14,790 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2021-12-22 16:00:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 16:00:14,790 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2021-12-22 16:00:14,791 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2021-12-22 16:00:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 16:00:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-22 16:00:14,791 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-22 16:00:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-22 16:00:14,792 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-22 16:00:14,792 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-22 16:00:14,792 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-22 16:00:14,792 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2021-12-22 16:00:14,792 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2021-12-22 16:00:14,792 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-22 16:00:14,793 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-22 16:00:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2021-12-22 16:00:14,793 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2021-12-22 16:00:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2021-12-22 16:00:14,793 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2021-12-22 16:00:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-22 16:00:14,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-22 16:00:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-22 16:00:14,793 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-22 16:00:14,794 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-22 16:00:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2021-12-22 16:00:14,794 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2021-12-22 16:00:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-12-22 16:00:14,794 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-12-22 16:00:14,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-22 16:00:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2021-12-22 16:00:14,795 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2021-12-22 16:00:14,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 16:00:14,797 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2021-12-22 16:00:14,797 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2021-12-22 16:00:14,797 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2021-12-22 16:00:14,797 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2021-12-22 16:00:14,798 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-22 16:00:14,799 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-22 16:00:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2021-12-22 16:00:14,799 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2021-12-22 16:00:14,799 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2021-12-22 16:00:14,803 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2021-12-22 16:00:14,803 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2021-12-22 16:00:14,804 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2021-12-22 16:00:14,804 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2021-12-22 16:00:14,804 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2021-12-22 16:00:14,804 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-22 16:00:14,804 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-22 16:00:14,804 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2021-12-22 16:00:14,804 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2021-12-22 16:00:14,804 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-12-22 16:00:14,804 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-12-22 16:00:14,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 16:00:14,805 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-22 16:00:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-22 16:00:14,805 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2021-12-22 16:00:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2021-12-22 16:00:14,805 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2021-12-22 16:00:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2021-12-22 16:00:14,805 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2021-12-22 16:00:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2021-12-22 16:00:14,805 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-22 16:00:14,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-22 16:00:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2021-12-22 16:00:14,806 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2021-12-22 16:00:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 16:00:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-12-22 16:00:14,806 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-12-22 16:00:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2021-12-22 16:00:14,806 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2021-12-22 16:00:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-22 16:00:14,806 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-22 16:00:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 16:00:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2021-12-22 16:00:14,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2021-12-22 16:00:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2021-12-22 16:00:14,807 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2021-12-22 16:00:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-12-22 16:00:14,807 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-12-22 16:00:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 16:00:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-22 16:00:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2021-12-22 16:00:14,807 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2021-12-22 16:00:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2021-12-22 16:00:14,808 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2021-12-22 16:00:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2021-12-22 16:00:14,808 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2021-12-22 16:00:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-22 16:00:14,808 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-22 16:00:14,808 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-12-22 16:00:14,808 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-12-22 16:00:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2021-12-22 16:00:14,809 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2021-12-22 16:00:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2021-12-22 16:00:14,809 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2021-12-22 16:00:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2021-12-22 16:00:14,809 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2021-12-22 16:00:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2021-12-22 16:00:14,809 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2021-12-22 16:00:14,809 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-22 16:00:14,809 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-22 16:00:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2021-12-22 16:00:14,810 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2021-12-22 16:00:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2021-12-22 16:00:14,810 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2021-12-22 16:00:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2021-12-22 16:00:14,810 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2021-12-22 16:00:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 16:00:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2021-12-22 16:00:14,810 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2021-12-22 16:00:14,810 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2021-12-22 16:00:14,810 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2021-12-22 16:00:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 16:00:14,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 16:00:14,811 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-22 16:00:14,811 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-22 16:00:15,636 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 16:00:15,638 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 16:00:26,853 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 16:00:26,869 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 16:00:26,869 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-22 16:00:26,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:00:26 BoogieIcfgContainer [2021-12-22 16:00:26,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 16:00:26,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 16:00:26,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 16:00:26,878 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 16:00:26,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:00:12" (1/3) ... [2021-12-22 16:00:26,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b309e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:00:26, skipping insertion in model container [2021-12-22 16:00:26,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:00:14" (2/3) ... [2021-12-22 16:00:26,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21b309e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:00:26, skipping insertion in model container [2021-12-22 16:00:26,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:00:26" (3/3) ... [2021-12-22 16:00:26,880 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-12-22 16:00:26,884 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 16:00:26,884 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 16:00:26,942 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 16:00:26,947 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 16:00:26,948 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 16:00:27,031 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) [2021-12-22 16:00:27,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 16:00:27,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:00:27,037 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] [2021-12-22 16:00:27,037 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 16:00:27,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:00:27,040 INFO L85 PathProgramCache]: Analyzing trace with hash 217154096, now seen corresponding path program 1 times [2021-12-22 16:00:27,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:00:27,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781855099] [2021-12-22 16:00:27,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:00:27,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:00:27,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:27,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:00:27,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:27,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 16:00:27,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:27,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 16:00:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:27,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 16:00:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:00:27,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:00:27,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781855099] [2021-12-22 16:00:27,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781855099] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:00:27,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:00:27,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:00:27,459 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331982688] [2021-12-22 16:00:27,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:00:27,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:00:27,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:00:27,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:00:27,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:00:27,488 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) [2021-12-22 16:00:30,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:00:30,484 INFO L93 Difference]: Finished difference Result 6164 states and 9664 transitions. [2021-12-22 16:00:30,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 16:00:30,486 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 [2021-12-22 16:00:30,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:00:30,521 INFO L225 Difference]: With dead ends: 6164 [2021-12-22 16:00:30,522 INFO L226 Difference]: Without dead ends: 3170 [2021-12-22 16:00:30,543 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 [2021-12-22 16:00:30,548 INFO L933 BasicCegarLoop]: 4425 mSDtfsCounter, 4949 mSDsluCounter, 2783 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5320 SdHoareTripleChecker+Valid, 7208 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1014 IncrementalHoareTripleChecker+Valid, 702 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-22 16:00:30,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5320 Valid, 7208 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1014 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-22 16:00:30,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2021-12-22 16:00:30,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2981. [2021-12-22 16:00:30,696 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) [2021-12-22 16:00:30,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 4515 transitions. [2021-12-22 16:00:30,718 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 4515 transitions. Word has length 38 [2021-12-22 16:00:30,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:00:30,719 INFO L470 AbstractCegarLoop]: Abstraction has 2981 states and 4515 transitions. [2021-12-22 16:00:30,719 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) [2021-12-22 16:00:30,719 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 4515 transitions. [2021-12-22 16:00:30,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 16:00:30,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:00:30,721 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] [2021-12-22 16:00:30,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 16:00:30,721 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 16:00:30,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:00:30,722 INFO L85 PathProgramCache]: Analyzing trace with hash 239786350, now seen corresponding path program 1 times [2021-12-22 16:00:30,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:00:30,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272508423] [2021-12-22 16:00:30,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:00:30,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:00:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:30,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:00:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:30,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 16:00:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:30,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 16:00:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:30,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 16:00:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:30,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:00:30,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:00:30,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272508423] [2021-12-22 16:00:30,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272508423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:00:30,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:00:30,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:00:30,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821973985] [2021-12-22 16:00:30,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:00:30,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:00:30,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:00:30,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:00:30,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:00:30,835 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) [2021-12-22 16:00:33,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-22 16:00:38,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:00:38,168 INFO L93 Difference]: Finished difference Result 9219 states and 14105 transitions. [2021-12-22 16:00:38,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:00:38,168 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 [2021-12-22 16:00:38,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:00:38,221 INFO L225 Difference]: With dead ends: 9219 [2021-12-22 16:00:38,221 INFO L226 Difference]: Without dead ends: 6246 [2021-12-22 16:00:38,244 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 [2021-12-22 16:00:38,245 INFO L933 BasicCegarLoop]: 4920 mSDtfsCounter, 5538 mSDsluCounter, 6881 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 1608 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6002 SdHoareTripleChecker+Valid, 11801 SdHoareTripleChecker+Invalid, 3361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1608 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-22 16:00:38,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6002 Valid, 11801 Invalid, 3361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1608 Valid, 1752 Invalid, 1 Unknown, 0 Unchecked, 6.9s Time] [2021-12-22 16:00:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6246 states. [2021-12-22 16:00:38,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6246 to 5851. [2021-12-22 16:00:38,534 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) [2021-12-22 16:00:38,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 8868 transitions. [2021-12-22 16:00:38,560 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 8868 transitions. Word has length 38 [2021-12-22 16:00:38,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:00:38,561 INFO L470 AbstractCegarLoop]: Abstraction has 5851 states and 8868 transitions. [2021-12-22 16:00:38,561 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) [2021-12-22 16:00:38,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 8868 transitions. [2021-12-22 16:00:38,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-22 16:00:38,564 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:00:38,564 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] [2021-12-22 16:00:38,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 16:00:38,565 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 16:00:38,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:00:38,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1625989744, now seen corresponding path program 1 times [2021-12-22 16:00:38,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:00:38,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685192629] [2021-12-22 16:00:38,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:00:38,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:00:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:38,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:00:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:38,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 16:00:38,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:38,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 16:00:38,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:38,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 16:00:38,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:00:38,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:00:38,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685192629] [2021-12-22 16:00:38,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685192629] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:00:38,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:00:38,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:00:38,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931781757] [2021-12-22 16:00:38,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:00:38,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:00:38,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:00:38,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:00:38,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:00:38,750 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) [2021-12-22 16:00:44,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:00:44,325 INFO L93 Difference]: Finished difference Result 18642 states and 29217 transitions. [2021-12-22 16:00:44,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 16:00:44,326 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 [2021-12-22 16:00:44,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:00:44,410 INFO L225 Difference]: With dead ends: 18642 [2021-12-22 16:00:44,410 INFO L226 Difference]: Without dead ends: 12831 [2021-12-22 16:00:44,445 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 [2021-12-22 16:00:44,447 INFO L933 BasicCegarLoop]: 7342 mSDtfsCounter, 4597 mSDsluCounter, 15273 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 1403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5192 SdHoareTripleChecker+Valid, 22615 SdHoareTripleChecker+Invalid, 3766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1403 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-22 16:00:44,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5192 Valid, 22615 Invalid, 3766 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1403 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-12-22 16:00:44,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12831 states. [2021-12-22 16:00:44,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12831 to 5853. [2021-12-22 16:00:44,957 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) [2021-12-22 16:00:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5853 states to 5853 states and 8870 transitions. [2021-12-22 16:00:45,012 INFO L78 Accepts]: Start accepts. Automaton has 5853 states and 8870 transitions. Word has length 38 [2021-12-22 16:00:45,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:00:45,013 INFO L470 AbstractCegarLoop]: Abstraction has 5853 states and 8870 transitions. [2021-12-22 16:00:45,014 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) [2021-12-22 16:00:45,014 INFO L276 IsEmpty]: Start isEmpty. Operand 5853 states and 8870 transitions. [2021-12-22 16:00:45,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-22 16:00:45,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:00:45,030 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] [2021-12-22 16:00:45,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 16:00:45,030 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 16:00:45,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:00:45,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1138161737, now seen corresponding path program 1 times [2021-12-22 16:00:45,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:00:45,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410517845] [2021-12-22 16:00:45,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:00:45,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:00:45,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:45,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:00:45,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:45,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 16:00:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:45,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 16:00:45,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:45,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 16:00:45,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:45,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 16:00:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:00:45,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:00:45,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410517845] [2021-12-22 16:00:45,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410517845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:00:45,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:00:45,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:00:45,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393954119] [2021-12-22 16:00:45,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:00:45,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:00:45,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:00:45,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:00:45,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:00:45,323 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) [2021-12-22 16:00:48,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:00:48,416 INFO L93 Difference]: Finished difference Result 6233 states and 9584 transitions. [2021-12-22 16:00:48,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 16:00:48,417 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 [2021-12-22 16:00:48,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:00:48,460 INFO L225 Difference]: With dead ends: 6233 [2021-12-22 16:00:48,460 INFO L226 Difference]: Without dead ends: 6230 [2021-12-22 16:00:48,470 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 [2021-12-22 16:00:48,476 INFO L933 BasicCegarLoop]: 4403 mSDtfsCounter, 4907 mSDsluCounter, 2772 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5280 SdHoareTripleChecker+Valid, 7175 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1012 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-22 16:00:48,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5280 Valid, 7175 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1012 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-22 16:00:48,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2021-12-22 16:00:48,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 5852. [2021-12-22 16:00:48,769 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) [2021-12-22 16:00:48,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 8868 transitions. [2021-12-22 16:00:48,791 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 8868 transitions. Word has length 43 [2021-12-22 16:00:48,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:00:48,792 INFO L470 AbstractCegarLoop]: Abstraction has 5852 states and 8868 transitions. [2021-12-22 16:00:48,792 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) [2021-12-22 16:00:48,792 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 8868 transitions. [2021-12-22 16:00:48,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-22 16:00:48,792 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:00:48,793 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] [2021-12-22 16:00:48,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 16:00:48,793 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 16:00:48,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:00:48,793 INFO L85 PathProgramCache]: Analyzing trace with hash 922151277, now seen corresponding path program 1 times [2021-12-22 16:00:48,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:00:48,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966853151] [2021-12-22 16:00:48,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:00:48,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:00:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:00:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:48,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 16:00:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:48,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 16:00:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:48,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 16:00:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:48,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 16:00:48,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:48,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:00:48,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:00:48,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966853151] [2021-12-22 16:00:48,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966853151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:00:48,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:00:48,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:00:48,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286033764] [2021-12-22 16:00:48,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:00:48,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:00:48,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:00:48,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:00:48,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:00:48,958 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) [2021-12-22 16:00:54,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:00:54,125 INFO L93 Difference]: Finished difference Result 18176 states and 27858 transitions. [2021-12-22 16:00:54,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:00:54,125 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 [2021-12-22 16:00:54,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:00:54,259 INFO L225 Difference]: With dead ends: 18176 [2021-12-22 16:00:54,259 INFO L226 Difference]: Without dead ends: 12368 [2021-12-22 16:00:54,291 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 [2021-12-22 16:00:54,291 INFO L933 BasicCegarLoop]: 6684 mSDtfsCounter, 5411 mSDsluCounter, 8210 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 1394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5871 SdHoareTripleChecker+Valid, 14894 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1394 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-22 16:00:54,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5871 Valid, 14894 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1394 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-22 16:00:54,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12368 states. [2021-12-22 16:00:54,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12368 to 11593. [2021-12-22 16:00:54,631 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) [2021-12-22 16:00:54,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11593 states to 11593 states and 17592 transitions. [2021-12-22 16:00:54,687 INFO L78 Accepts]: Start accepts. Automaton has 11593 states and 17592 transitions. Word has length 44 [2021-12-22 16:00:54,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:00:54,688 INFO L470 AbstractCegarLoop]: Abstraction has 11593 states and 17592 transitions. [2021-12-22 16:00:54,688 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) [2021-12-22 16:00:54,688 INFO L276 IsEmpty]: Start isEmpty. Operand 11593 states and 17592 transitions. [2021-12-22 16:00:54,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-22 16:00:54,688 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:00:54,689 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] [2021-12-22 16:00:54,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 16:00:54,689 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 16:00:54,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:00:54,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1479200820, now seen corresponding path program 1 times [2021-12-22 16:00:54,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:00:54,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712697035] [2021-12-22 16:00:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:00:54,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:00:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:54,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:00:54,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:54,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 16:00:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:54,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 16:00:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:54,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 16:00:54,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:54,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 16:00:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:00:54,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:00:54,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712697035] [2021-12-22 16:00:54,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712697035] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:00:54,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:00:54,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:00:54,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076392691] [2021-12-22 16:00:54,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:00:54,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:00:54,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:00:54,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:00:54,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:00:54,954 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) [2021-12-22 16:00:57,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:00:57,491 INFO L93 Difference]: Finished difference Result 12351 states and 19018 transitions. [2021-12-22 16:00:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 16:00:57,491 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 [2021-12-22 16:00:57,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:00:57,568 INFO L225 Difference]: With dead ends: 12351 [2021-12-22 16:00:57,569 INFO L226 Difference]: Without dead ends: 12348 [2021-12-22 16:00:57,583 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 [2021-12-22 16:00:57,584 INFO L933 BasicCegarLoop]: 4403 mSDtfsCounter, 4903 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s 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, 2.2s IncrementalHoareTripleChecker+Time [2021-12-22 16:00:57,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5274 Valid, 7176 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1011 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-22 16:00:57,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2021-12-22 16:00:57,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 11592. [2021-12-22 16:00:57,924 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) [2021-12-22 16:00:57,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11592 states to 11592 states and 17590 transitions. [2021-12-22 16:00:57,976 INFO L78 Accepts]: Start accepts. Automaton has 11592 states and 17590 transitions. Word has length 45 [2021-12-22 16:00:57,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:00:57,977 INFO L470 AbstractCegarLoop]: Abstraction has 11592 states and 17590 transitions. [2021-12-22 16:00:57,977 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) [2021-12-22 16:00:57,977 INFO L276 IsEmpty]: Start isEmpty. Operand 11592 states and 17590 transitions. [2021-12-22 16:00:57,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-22 16:00:57,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:00:57,979 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] [2021-12-22 16:00:57,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 16:00:57,979 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 16:00:57,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:00:57,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1388300368, now seen corresponding path program 1 times [2021-12-22 16:00:57,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:00:57,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501478458] [2021-12-22 16:00:57,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:00:57,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:00:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:58,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:00:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:58,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 16:00:58,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:58,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 16:00:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:58,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 16:00:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:58,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 16:00:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:00:58,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 16:00:58,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:00:58,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501478458] [2021-12-22 16:00:58,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501478458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:00:58,106 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:00:58,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 16:00:58,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708849422] [2021-12-22 16:00:58,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:00:58,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 16:00:58,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:00:58,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 16:00:58,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 16:00:58,109 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) [2021-12-22 16:01:02,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 16:01:02,644 INFO L93 Difference]: Finished difference Result 17892 states and 27043 transitions. [2021-12-22 16:01:02,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 16:01:02,645 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 [2021-12-22 16:01:02,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 16:01:02,768 INFO L225 Difference]: With dead ends: 17892 [2021-12-22 16:01:02,768 INFO L226 Difference]: Without dead ends: 17822 [2021-12-22 16:01:02,794 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 [2021-12-22 16:01:02,796 INFO L933 BasicCegarLoop]: 4600 mSDtfsCounter, 3880 mSDsluCounter, 5868 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 1275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4184 SdHoareTripleChecker+Valid, 10468 SdHoareTripleChecker+Invalid, 2665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1275 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-22 16:01:02,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4184 Valid, 10468 Invalid, 2665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1275 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-22 16:01:02,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17822 states. [2021-12-22 16:01:03,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17822 to 16440. [2021-12-22 16:01:03,341 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) [2021-12-22 16:01:03,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16440 states to 16440 states and 24507 transitions. [2021-12-22 16:01:03,434 INFO L78 Accepts]: Start accepts. Automaton has 16440 states and 24507 transitions. Word has length 46 [2021-12-22 16:01:03,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 16:01:03,435 INFO L470 AbstractCegarLoop]: Abstraction has 16440 states and 24507 transitions. [2021-12-22 16:01:03,435 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) [2021-12-22 16:01:03,435 INFO L276 IsEmpty]: Start isEmpty. Operand 16440 states and 24507 transitions. [2021-12-22 16:01:03,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-22 16:01:03,437 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 16:01:03,437 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] [2021-12-22 16:01:03,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 16:01:03,438 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 16:01:03,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 16:01:03,438 INFO L85 PathProgramCache]: Analyzing trace with hash -237158953, now seen corresponding path program 1 times [2021-12-22 16:01:03,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 16:01:03,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821585101] [2021-12-22 16:01:03,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 16:01:03,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 16:01:03,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:01:03,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-22 16:01:03,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:01:03,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-22 16:01:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:01:03,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 16:01:03,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:01:03,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 16:01:03,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:01:03,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 16:01:03,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:01:03,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-22 16:01:03,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:01:03,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-22 16:01:03,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:01:03,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-22 16:01:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:01:03,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 16:01:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:01:03,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-22 16:01:03,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 16:01:03,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-22 16:01:03,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 16:01:03,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821585101] [2021-12-22 16:01:03,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821585101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 16:01:03,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 16:01:03,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 16:01:03,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147652325] [2021-12-22 16:01:03,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 16:01:03,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 16:01:03,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 16:01:03,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 16:01:03,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 16:01:03,600 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)