./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 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 19:06:14,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 19:06:14,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 19:06:14,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 19:06:14,688 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 19:06:14,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 19:06:14,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 19:06:14,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 19:06:14,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 19:06:14,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 19:06:14,693 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 19:06:14,694 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 19:06:14,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 19:06:14,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 19:06:14,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 19:06:14,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 19:06:14,697 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 19:06:14,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 19:06:14,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 19:06:14,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 19:06:14,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 19:06:14,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 19:06:14,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 19:06:14,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 19:06:14,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 19:06:14,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 19:06:14,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 19:06:14,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 19:06:14,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 19:06:14,706 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 19:06:14,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 19:06:14,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 19:06:14,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 19:06:14,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 19:06:14,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 19:06:14,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 19:06:14,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 19:06:14,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 19:06:14,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 19:06:14,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 19:06:14,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 19:06:14,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 19:06:14,725 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 19:06:14,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 19:06:14,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 19:06:14,726 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 19:06:14,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 19:06:14,727 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 19:06:14,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 19:06:14,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 19:06:14,728 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 19:06:14,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 19:06:14,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 19:06:14,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 19:06:14,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 19:06:14,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 19:06:14,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 19:06:14,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 19:06:14,730 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 19:06:14,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 19:06:14,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 19:06:14,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 19:06:14,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 19:06:14,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:06:14,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 19:06:14,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 19:06:14,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 19:06:14,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 19:06:14,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 19:06:14,732 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 19:06:14,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 19:06:14,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 19:06:14,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 19:06:14,733 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2ecffe8a5f60817da30887d6b361935e398ff8703e4fd5b17747e558625c4088 [2021-12-14 19:06:14,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 19:06:14,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 19:06:14,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 19:06:14,947 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 19:06:14,948 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 19:06:14,949 INFO L432 ainManager$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 [2021-12-14 19:06:15,000 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3f250ac8/63020b19d549405d964c05459799a878/FLAGf16529653 [2021-12-14 19:06:15,600 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 19:06:15,600 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 [2021-12-14 19:06:15,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3f250ac8/63020b19d549405d964c05459799a878/FLAGf16529653 [2021-12-14 19:06:16,025 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3f250ac8/63020b19d549405d964c05459799a878 [2021-12-14 19:06:16,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 19:06:16,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 19:06:16,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 19:06:16,031 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 19:06:16,033 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 19:06:16,033 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:06:16" (1/1) ... [2021-12-14 19:06:16,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bad9b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:06:16, skipping insertion in model container [2021-12-14 19:06:16,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 07:06:16" (1/1) ... [2021-12-14 19:06:16,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 19:06:16,145 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 19:06:17,753 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] [2021-12-14 19:06:17,840 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:06:17,854 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 19:06:18,202 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] [2021-12-14 19:06:18,215 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 19:06:18,277 INFO L208 MainTranslator]: Completed translation [2021-12-14 19:06:18,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:06:18 WrapperNode [2021-12-14 19:06:18,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 19:06:18,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 19:06:18,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 19:06:18,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 19:06:18,287 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:06:18" (1/1) ... [2021-12-14 19:06:18,383 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:06:18" (1/1) ... [2021-12-14 19:06:18,575 INFO L137 Inliner]: procedures = 273, calls = 4073, calls flagged for inlining = 105, calls inlined = 96, statements flattened = 8857 [2021-12-14 19:06:18,576 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 19:06:18,577 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 19:06:18,577 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 19:06:18,577 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 19:06:18,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:06:18" (1/1) ... [2021-12-14 19:06:18,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:06:18" (1/1) ... [2021-12-14 19:06:18,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:06:18" (1/1) ... [2021-12-14 19:06:18,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:06:18" (1/1) ... [2021-12-14 19:06:18,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:06:18" (1/1) ... [2021-12-14 19:06:18,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:06:18" (1/1) ... [2021-12-14 19:06:18,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:06:18" (1/1) ... [2021-12-14 19:06:18,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 19:06:18,922 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 19:06:18,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 19:06:18,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 19:06:18,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:06:18" (1/1) ... [2021-12-14 19:06:18,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 19:06:18,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 19:06:18,946 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-14 19:06:18,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-14 19:06:18,970 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-14 19:06:18,971 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-14 19:06:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure osst_log_options [2021-12-14 19:06:18,971 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_log_options [2021-12-14 19:06:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2021-12-14 19:06:18,971 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2021-12-14 19:06:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2021-12-14 19:06:18,971 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2021-12-14 19:06:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2021-12-14 19:06:18,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 19:06:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 19:06:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_behind_check [2021-12-14 19:06:18,972 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_behind_check [2021-12-14 19:06:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure lowmem_page_address [2021-12-14 19:06:18,972 INFO L138 BoogieDeclarations]: Found implementation of procedure lowmem_page_address [2021-12-14 19:06:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_block_when_processing_errors [2021-12-14 19:06:18,972 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_block_when_processing_errors [2021-12-14 19:06:18,972 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-14 19:06:18,972 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-14 19:06:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock [2021-12-14 19:06:18,973 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock [2021-12-14 19:06:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure osst_release_request [2021-12-14 19:06:18,973 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_release_request [2021-12-14 19:06:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 19:06:18,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 19:06:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure osst_set_frame_position [2021-12-14 19:06:18,973 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_set_frame_position [2021-12-14 19:06:18,973 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_header [2021-12-14 19:06:18,974 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_header [2021-12-14 19:06:18,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_osst_tape [2021-12-14 19:06:18,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_osst_tape [2021-12-14 19:06:18,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2021-12-14 19:06:18,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_lock_of_osst_tape [2021-12-14 19:06:18,974 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 19:06:18,974 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 19:06:18,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 19:06:18,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 19:06:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2021-12-14 19:06:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2021-12-14 19:06:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_frame [2021-12-14 19:06:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_frame [2021-12-14 19:06:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure tape_name [2021-12-14 19:06:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure tape_name [2021-12-14 19:06:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-14 19:06:18,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-14 19:06:18,975 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_device_put [2021-12-14 19:06:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_device_put [2021-12-14 19:06:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 19:06:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 19:06:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_write_buffer [2021-12-14 19:06:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_write_buffer [2021-12-14 19:06:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure osst_initiate_read [2021-12-14 19:06:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_initiate_read [2021-12-14 19:06:18,976 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-14 19:06:18,976 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-14 19:06:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_ioctl [2021-12-14 19:06:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_ioctl [2021-12-14 19:06:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure osst_seek_logical_blk [2021-12-14 19:06:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_seek_logical_blk [2021-12-14 19:06:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_osst_int_mutex [2021-12-14 19:06:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_osst_int_mutex [2021-12-14 19:06:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_trailer [2021-12-14 19:06:18,977 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_trailer [2021-12-14 19:06:18,977 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_drive_buffer [2021-12-14 19:06:18,978 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_drive_buffer [2021-12-14 19:06:18,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 19:06:18,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_osst_int_mutex [2021-12-14 19:06:18,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_osst_int_mutex [2021-12-14 19:06:18,978 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-14 19:06:18,978 INFO L130 BoogieDeclarations]: Found specification of procedure osst_int_ioctl [2021-12-14 19:06:18,978 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_int_ioctl [2021-12-14 19:06:18,978 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_pages [2021-12-14 19:06:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_pages [2021-12-14 19:06:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure do_door_lock [2021-12-14 19:06:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure do_door_lock [2021-12-14 19:06:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 19:06:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_to_buffer [2021-12-14 19:06:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_to_buffer [2021-12-14 19:06:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_analyze_headers [2021-12-14 19:06:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_analyze_headers [2021-12-14 19:06:18,979 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-14 19:06:18,979 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-14 19:06:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_logical_frame [2021-12-14 19:06:18,980 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_logical_frame [2021-12-14 19:06:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2021-12-14 19:06:18,980 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2021-12-14 19:06:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure driver_unregister [2021-12-14 19:06:18,980 INFO L138 BoogieDeclarations]: Found implementation of procedure driver_unregister [2021-12-14 19:06:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 19:06:18,980 INFO L130 BoogieDeclarations]: Found specification of procedure osst_position_tape_and_confirm [2021-12-14 19:06:18,980 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_position_tape_and_confirm [2021-12-14 19:06:18,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 19:06:18,981 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-14 19:06:18,981 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-14 19:06:18,981 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 19:06:18,981 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 19:06:18,981 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 19:06:18,981 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 19:06:18,981 INFO L130 BoogieDeclarations]: Found specification of procedure osst_verify_frame [2021-12-14 19:06:18,981 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_verify_frame [2021-12-14 19:06:18,982 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-14 19:06:18,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-14 19:06:18,982 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_ready [2021-12-14 19:06:18,982 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_ready [2021-12-14 19:06:18,982 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reset_header [2021-12-14 19:06:18,982 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reset_header [2021-12-14 19:06:18,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2021-12-14 19:06:18,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2021-12-14 19:06:18,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 19:06:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2021-12-14 19:06:18,983 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2021-12-14 19:06:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure osst_do_scsi [2021-12-14 19:06:18,983 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_do_scsi [2021-12-14 19:06:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-12-14 19:06:18,983 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-12-14 19:06:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 19:06:18,983 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev [2021-12-14 19:06:18,983 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev [2021-12-14 19:06:18,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 19:06:18,984 INFO L130 BoogieDeclarations]: Found specification of procedure osst_chk_result [2021-12-14 19:06:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_chk_result [2021-12-14 19:06:18,984 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_add [2021-12-14 19:06:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_add [2021-12-14 19:06:18,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 19:06:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 19:06:18,984 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_backward [2021-12-14 19:06:18,984 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_backward [2021-12-14 19:06:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure osst_read_back_buffer_and_rewrite [2021-12-14 19:06:18,985 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_read_back_buffer_and_rewrite [2021-12-14 19:06:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure cross_eof [2021-12-14 19:06:18,985 INFO L138 BoogieDeclarations]: Found implementation of procedure cross_eof [2021-12-14 19:06:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_cleanup [2021-12-14 19:06:18,985 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_cleanup [2021-12-14 19:06:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 19:06:18,985 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 19:06:18,985 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_buffer [2021-12-14 19:06:18,986 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_buffer [2021-12-14 19:06:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2021-12-14 19:06:18,986 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2021-12-14 19:06:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 19:06:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-14 19:06:18,986 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-14 19:06:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure osst_reposition_and_retry [2021-12-14 19:06:18,986 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_reposition_and_retry [2021-12-14 19:06:18,986 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_filemark [2021-12-14 19:06:18,986 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_filemark [2021-12-14 19:06:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure osst_sysfs_destroy [2021-12-14 19:06:18,987 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_sysfs_destroy [2021-12-14 19:06:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 19:06:18,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 19:06:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout_interruptible [2021-12-14 19:06:18,987 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout_interruptible [2021-12-14 19:06:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 19:06:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure vmalloc [2021-12-14 19:06:18,987 INFO L138 BoogieDeclarations]: Found implementation of procedure vmalloc [2021-12-14 19:06:18,987 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock [2021-12-14 19:06:18,988 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock [2021-12-14 19:06:18,988 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-14 19:06:18,988 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-14 19:06:18,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 19:06:18,988 INFO L130 BoogieDeclarations]: Found specification of procedure __osst_write_header [2021-12-14 19:06:18,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __osst_write_header [2021-12-14 19:06:18,988 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_frame [2021-12-14 19:06:18,988 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_frame [2021-12-14 19:06:18,988 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-12-14 19:06:18,989 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-12-14 19:06:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 19:06:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-14 19:06:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure osst_get_frame_position [2021-12-14 19:06:18,989 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_get_frame_position [2021-12-14 19:06:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure osst_flush_buffer [2021-12-14 19:06:18,989 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_flush_buffer [2021-12-14 19:06:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure osst_copy_from_buffer [2021-12-14 19:06:18,989 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_copy_from_buffer [2021-12-14 19:06:18,989 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-14 19:06:18,990 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-14 19:06:18,990 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2021-12-14 19:06:18,990 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2021-12-14 19:06:18,990 INFO L130 BoogieDeclarations]: Found specification of procedure normalize_buffer [2021-12-14 19:06:18,990 INFO L138 BoogieDeclarations]: Found implementation of procedure normalize_buffer [2021-12-14 19:06:18,990 INFO L130 BoogieDeclarations]: Found specification of procedure osst_init_aux [2021-12-14 19:06:18,990 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_init_aux [2021-12-14 19:06:18,990 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_error_recovery [2021-12-14 19:06:18,990 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_error_recovery [2021-12-14 19:06:18,990 INFO L130 BoogieDeclarations]: Found specification of procedure osst_write_eod [2021-12-14 19:06:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_write_eod [2021-12-14 19:06:18,991 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-14 19:06:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-14 19:06:18,991 INFO L130 BoogieDeclarations]: Found specification of procedure osst_space_over_filemarks_forward_slow [2021-12-14 19:06:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_space_over_filemarks_forward_slow [2021-12-14 19:06:18,991 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2021-12-14 19:06:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2021-12-14 19:06:18,991 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2021-12-14 19:06:18,991 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2021-12-14 19:06:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 19:06:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure osst_recover_wait_frame [2021-12-14 19:06:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_recover_wait_frame [2021-12-14 19:06:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure osst_wait_frame [2021-12-14 19:06:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure osst_wait_frame [2021-12-14 19:06:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 19:06:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 19:06:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-14 19:06:18,992 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-14 19:06:19,757 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 19:06:19,761 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 19:06:30,022 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 19:06:30,042 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 19:06:30,045 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-14 19:06:30,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:06:30 BoogieIcfgContainer [2021-12-14 19:06:30,050 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 19:06:30,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 19:06:30,053 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 19:06:30,056 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 19:06:30,056 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 07:06:16" (1/3) ... [2021-12-14 19:06:30,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e550dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:06:30, skipping insertion in model container [2021-12-14 19:06:30,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 07:06:18" (2/3) ... [2021-12-14 19:06:30,057 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e550dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 07:06:30, skipping insertion in model container [2021-12-14 19:06:30,057 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 07:06:30" (3/3) ... [2021-12-14 19:06:30,058 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--scsi--osst.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2021-12-14 19:06:30,062 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 19:06:30,063 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 19:06:30,109 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 19:06:30,115 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 19:06:30,116 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 19:06:30,166 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) [2021-12-14 19:06:30,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-14 19:06:30,171 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:06:30,171 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] [2021-12-14 19:06:30,172 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 19:06:30,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:06:30,175 INFO L85 PathProgramCache]: Analyzing trace with hash 217154096, now seen corresponding path program 1 times [2021-12-14 19:06:30,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:06:30,182 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388777170] [2021-12-14 19:06:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:06:30,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:06:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:30,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 19:06:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:30,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 19:06:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:30,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 19:06:30,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:30,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 19:06:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:30,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:06:30,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:06:30,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388777170] [2021-12-14 19:06:30,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388777170] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:06:30,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:06:30,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:06:30,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820091053] [2021-12-14 19:06:30,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:06:30,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 19:06:30,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:06:30,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 19:06:30,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 19:06:30,536 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) [2021-12-14 19:06:33,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:06:33,541 INFO L93 Difference]: Finished difference Result 6164 states and 9664 transitions. [2021-12-14 19:06:33,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 19:06:33,545 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 [2021-12-14 19:06:33,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:06:33,590 INFO L225 Difference]: With dead ends: 6164 [2021-12-14 19:06:33,591 INFO L226 Difference]: Without dead ends: 3170 [2021-12-14 19:06:33,618 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 [2021-12-14 19:06:33,621 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 4949 mSDsluCounter, 2780 mSDsCounter, 0 mSdLazyCounter, 702 mSolverCounterSat, 1014 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5323 SdHoareTripleChecker+Valid, 7202 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 [2021-12-14 19:06:33,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5323 Valid, 7202 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1014 Valid, 702 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-14 19:06:33,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2021-12-14 19:06:33,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 2981. [2021-12-14 19:06:33,788 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) [2021-12-14 19:06:33,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2981 states to 2981 states and 4515 transitions. [2021-12-14 19:06:33,814 INFO L78 Accepts]: Start accepts. Automaton has 2981 states and 4515 transitions. Word has length 38 [2021-12-14 19:06:33,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:06:33,815 INFO L470 AbstractCegarLoop]: Abstraction has 2981 states and 4515 transitions. [2021-12-14 19:06:33,815 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) [2021-12-14 19:06:33,815 INFO L276 IsEmpty]: Start isEmpty. Operand 2981 states and 4515 transitions. [2021-12-14 19:06:33,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-14 19:06:33,817 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:06:33,817 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] [2021-12-14 19:06:33,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 19:06:33,817 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 19:06:33,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:06:33,818 INFO L85 PathProgramCache]: Analyzing trace with hash 239786350, now seen corresponding path program 1 times [2021-12-14 19:06:33,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:06:33,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192698478] [2021-12-14 19:06:33,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:06:33,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:06:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 19:06:33,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:33,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 19:06:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:33,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 19:06:33,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:33,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 19:06:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:06:33,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:06:33,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192698478] [2021-12-14 19:06:33,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192698478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:06:33,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:06:33,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:06:33,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493235684] [2021-12-14 19:06:33,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:06:33,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 19:06:33,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:06:33,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 19:06:33,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 19:06:33,980 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) [2021-12-14 19:06:37,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-14 19:06:41,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:06:41,691 INFO L93 Difference]: Finished difference Result 9219 states and 14105 transitions. [2021-12-14 19:06:41,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 19:06:41,696 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 [2021-12-14 19:06:41,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:06:41,745 INFO L225 Difference]: With dead ends: 9219 [2021-12-14 19:06:41,745 INFO L226 Difference]: Without dead ends: 6246 [2021-12-14 19:06:41,762 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 [2021-12-14 19:06:41,763 INFO L933 BasicCegarLoop]: 4918 mSDtfsCounter, 5538 mSDsluCounter, 6874 mSDsCounter, 0 mSdLazyCounter, 1752 mSolverCounterSat, 1608 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5999 SdHoareTripleChecker+Valid, 11792 SdHoareTripleChecker+Invalid, 3361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1608 IncrementalHoareTripleChecker+Valid, 1752 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2021-12-14 19:06:41,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5999 Valid, 11792 Invalid, 3361 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1608 Valid, 1752 Invalid, 1 Unknown, 0 Unchecked, 7.2s Time] [2021-12-14 19:06:41,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6246 states. [2021-12-14 19:06:41,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6246 to 5851. [2021-12-14 19:06:41,937 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) [2021-12-14 19:06:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5851 states to 5851 states and 8868 transitions. [2021-12-14 19:06:41,965 INFO L78 Accepts]: Start accepts. Automaton has 5851 states and 8868 transitions. Word has length 38 [2021-12-14 19:06:41,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:06:41,966 INFO L470 AbstractCegarLoop]: Abstraction has 5851 states and 8868 transitions. [2021-12-14 19:06:41,966 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) [2021-12-14 19:06:41,967 INFO L276 IsEmpty]: Start isEmpty. Operand 5851 states and 8868 transitions. [2021-12-14 19:06:41,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-14 19:06:41,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:06:41,970 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] [2021-12-14 19:06:41,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 19:06:41,970 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 19:06:41,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:06:41,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1625989744, now seen corresponding path program 1 times [2021-12-14 19:06:41,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:06:41,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167827255] [2021-12-14 19:06:41,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:06:41,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:06:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:42,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 19:06:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:42,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 19:06:42,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:42,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 19:06:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:42,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 19:06:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:42,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:06:42,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:06:42,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167827255] [2021-12-14 19:06:42,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167827255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:06:42,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:06:42,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 19:06:42,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431483940] [2021-12-14 19:06:42,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:06:42,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 19:06:42,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:06:42,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 19:06:42,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:06:42,156 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) [2021-12-14 19:06:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:06:48,973 INFO L93 Difference]: Finished difference Result 18642 states and 29217 transitions. [2021-12-14 19:06:48,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 19:06:48,974 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 [2021-12-14 19:06:48,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:06:49,053 INFO L225 Difference]: With dead ends: 18642 [2021-12-14 19:06:49,054 INFO L226 Difference]: Without dead ends: 12831 [2021-12-14 19:06:49,089 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 [2021-12-14 19:06:49,092 INFO L933 BasicCegarLoop]: 7348 mSDtfsCounter, 4597 mSDsluCounter, 15287 mSDsCounter, 0 mSdLazyCounter, 2363 mSolverCounterSat, 1401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5190 SdHoareTripleChecker+Valid, 22635 SdHoareTripleChecker+Invalid, 3764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1401 IncrementalHoareTripleChecker+Valid, 2363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-12-14 19:06:49,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5190 Valid, 22635 Invalid, 3764 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1401 Valid, 2363 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-12-14 19:06:49,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12831 states. [2021-12-14 19:06:49,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12831 to 5853. [2021-12-14 19:06:49,444 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) [2021-12-14 19:06:49,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5853 states to 5853 states and 8870 transitions. [2021-12-14 19:06:49,474 INFO L78 Accepts]: Start accepts. Automaton has 5853 states and 8870 transitions. Word has length 38 [2021-12-14 19:06:49,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:06:49,475 INFO L470 AbstractCegarLoop]: Abstraction has 5853 states and 8870 transitions. [2021-12-14 19:06:49,475 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) [2021-12-14 19:06:49,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5853 states and 8870 transitions. [2021-12-14 19:06:49,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-14 19:06:49,476 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:06:49,477 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] [2021-12-14 19:06:49,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 19:06:49,477 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 19:06:49,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:06:49,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1138161737, now seen corresponding path program 1 times [2021-12-14 19:06:49,478 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:06:49,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442513689] [2021-12-14 19:06:49,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:06:49,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:06:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:49,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 19:06:49,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:49,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 19:06:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:49,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 19:06:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:49,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 19:06:49,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:49,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 19:06:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:49,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:06:49,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:06:49,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442513689] [2021-12-14 19:06:49,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442513689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:06:49,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:06:49,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:06:49,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201909874] [2021-12-14 19:06:49,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:06:49,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 19:06:49,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:06:49,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 19:06:49,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 19:06:49,643 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) [2021-12-14 19:06:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:06:52,051 INFO L93 Difference]: Finished difference Result 6233 states and 9584 transitions. [2021-12-14 19:06:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 19:06:52,051 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 [2021-12-14 19:06:52,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:06:52,085 INFO L225 Difference]: With dead ends: 6233 [2021-12-14 19:06:52,085 INFO L226 Difference]: Without dead ends: 6230 [2021-12-14 19:06:52,091 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 [2021-12-14 19:06:52,092 INFO L933 BasicCegarLoop]: 4406 mSDtfsCounter, 4907 mSDsluCounter, 2775 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5277 SdHoareTripleChecker+Valid, 7181 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1012 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-14 19:06:52,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5277 Valid, 7181 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1012 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2021-12-14 19:06:52,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6230 states. [2021-12-14 19:06:52,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6230 to 5852. [2021-12-14 19:06:52,263 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) [2021-12-14 19:06:52,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5852 states to 5852 states and 8868 transitions. [2021-12-14 19:06:52,287 INFO L78 Accepts]: Start accepts. Automaton has 5852 states and 8868 transitions. Word has length 43 [2021-12-14 19:06:52,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:06:52,287 INFO L470 AbstractCegarLoop]: Abstraction has 5852 states and 8868 transitions. [2021-12-14 19:06:52,288 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) [2021-12-14 19:06:52,288 INFO L276 IsEmpty]: Start isEmpty. Operand 5852 states and 8868 transitions. [2021-12-14 19:06:52,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-12-14 19:06:52,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:06:52,292 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] [2021-12-14 19:06:52,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 19:06:52,292 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 19:06:52,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:06:52,293 INFO L85 PathProgramCache]: Analyzing trace with hash 922151277, now seen corresponding path program 1 times [2021-12-14 19:06:52,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:06:52,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421443711] [2021-12-14 19:06:52,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:06:52,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:06:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:52,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 19:06:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:52,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 19:06:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 19:06:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:52,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 19:06:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:52,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 19:06:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:52,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:06:52,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:06:52,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421443711] [2021-12-14 19:06:52,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421443711] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:06:52,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:06:52,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:06:52,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846142222] [2021-12-14 19:06:52,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:06:52,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 19:06:52,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:06:52,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 19:06:52,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 19:06:52,436 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) [2021-12-14 19:06:57,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:06:57,691 INFO L93 Difference]: Finished difference Result 18176 states and 27858 transitions. [2021-12-14 19:06:57,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 19:06:57,692 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 [2021-12-14 19:06:57,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:06:57,780 INFO L225 Difference]: With dead ends: 18176 [2021-12-14 19:06:57,780 INFO L226 Difference]: Without dead ends: 12368 [2021-12-14 19:06:57,817 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 [2021-12-14 19:06:57,818 INFO L933 BasicCegarLoop]: 6683 mSDtfsCounter, 5411 mSDsluCounter, 8207 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 1394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5870 SdHoareTripleChecker+Valid, 14890 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1394 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-14 19:06:57,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5870 Valid, 14890 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1394 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-14 19:06:57,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12368 states. [2021-12-14 19:06:58,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12368 to 11593. [2021-12-14 19:06:58,193 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) [2021-12-14 19:06:58,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11593 states to 11593 states and 17592 transitions. [2021-12-14 19:06:58,253 INFO L78 Accepts]: Start accepts. Automaton has 11593 states and 17592 transitions. Word has length 44 [2021-12-14 19:06:58,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:06:58,253 INFO L470 AbstractCegarLoop]: Abstraction has 11593 states and 17592 transitions. [2021-12-14 19:06:58,254 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) [2021-12-14 19:06:58,254 INFO L276 IsEmpty]: Start isEmpty. Operand 11593 states and 17592 transitions. [2021-12-14 19:06:58,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-12-14 19:06:58,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:06:58,258 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] [2021-12-14 19:06:58,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 19:06:58,259 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 19:06:58,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:06:58,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1479200820, now seen corresponding path program 1 times [2021-12-14 19:06:58,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:06:58,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417273069] [2021-12-14 19:06:58,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:06:58,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:06:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:58,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 19:06:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:58,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 19:06:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:58,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 19:06:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 19:06:58,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:58,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 19:06:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:06:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:06:58,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:06:58,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417273069] [2021-12-14 19:06:58,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417273069] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:06:58,402 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:06:58,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:06:58,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488614881] [2021-12-14 19:06:58,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:06:58,403 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 19:06:58,403 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:06:58,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 19:06:58,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 19:06:58,404 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) [2021-12-14 19:07:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:07:00,828 INFO L93 Difference]: Finished difference Result 12351 states and 19018 transitions. [2021-12-14 19:07:00,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 19:07:00,829 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 [2021-12-14 19:07:00,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:07:00,882 INFO L225 Difference]: With dead ends: 12351 [2021-12-14 19:07:00,883 INFO L226 Difference]: Without dead ends: 12348 [2021-12-14 19:07:00,889 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 [2021-12-14 19:07:00,890 INFO L933 BasicCegarLoop]: 4403 mSDtfsCounter, 4903 mSDsluCounter, 2773 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 1011 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s 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, 2.1s IncrementalHoareTripleChecker+Time [2021-12-14 19:07:00,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5274 Valid, 7176 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1011 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-12-14 19:07:00,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12348 states. [2021-12-14 19:07:01,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12348 to 11592. [2021-12-14 19:07:01,215 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) [2021-12-14 19:07:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11592 states to 11592 states and 17590 transitions. [2021-12-14 19:07:01,271 INFO L78 Accepts]: Start accepts. Automaton has 11592 states and 17590 transitions. Word has length 45 [2021-12-14 19:07:01,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:07:01,272 INFO L470 AbstractCegarLoop]: Abstraction has 11592 states and 17590 transitions. [2021-12-14 19:07:01,272 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) [2021-12-14 19:07:01,272 INFO L276 IsEmpty]: Start isEmpty. Operand 11592 states and 17590 transitions. [2021-12-14 19:07:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-12-14 19:07:01,274 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:07:01,274 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] [2021-12-14 19:07:01,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 19:07:01,274 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 19:07:01,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:07:01,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1388300368, now seen corresponding path program 1 times [2021-12-14 19:07:01,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:07:01,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279186574] [2021-12-14 19:07:01,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:07:01,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:07:01,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:01,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 19:07:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:01,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 19:07:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:01,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 19:07:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:01,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 19:07:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:01,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 19:07:01,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:01,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 19:07:01,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:07:01,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279186574] [2021-12-14 19:07:01,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279186574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:07:01,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:07:01,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 19:07:01,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695802778] [2021-12-14 19:07:01,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:07:01,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 19:07:01,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:07:01,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 19:07:01,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 19:07:01,392 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) [2021-12-14 19:07:05,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 19:07:05,278 INFO L93 Difference]: Finished difference Result 17892 states and 27043 transitions. [2021-12-14 19:07:05,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 19:07:05,279 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 [2021-12-14 19:07:05,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 19:07:05,394 INFO L225 Difference]: With dead ends: 17892 [2021-12-14 19:07:05,394 INFO L226 Difference]: Without dead ends: 17822 [2021-12-14 19:07:05,418 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 [2021-12-14 19:07:05,419 INFO L933 BasicCegarLoop]: 4598 mSDtfsCounter, 3880 mSDsluCounter, 5864 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 1275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4184 SdHoareTripleChecker+Valid, 10462 SdHoareTripleChecker+Invalid, 2665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1275 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-14 19:07:05,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4184 Valid, 10462 Invalid, 2665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1275 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-14 19:07:05,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17822 states. [2021-12-14 19:07:05,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17822 to 16440. [2021-12-14 19:07:05,998 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) [2021-12-14 19:07:06,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16440 states to 16440 states and 24507 transitions. [2021-12-14 19:07:06,081 INFO L78 Accepts]: Start accepts. Automaton has 16440 states and 24507 transitions. Word has length 46 [2021-12-14 19:07:06,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 19:07:06,082 INFO L470 AbstractCegarLoop]: Abstraction has 16440 states and 24507 transitions. [2021-12-14 19:07:06,082 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) [2021-12-14 19:07:06,083 INFO L276 IsEmpty]: Start isEmpty. Operand 16440 states and 24507 transitions. [2021-12-14 19:07:06,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-14 19:07:06,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 19:07:06,086 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] [2021-12-14 19:07:06,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 19:07:06,086 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 19:07:06,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 19:07:06,087 INFO L85 PathProgramCache]: Analyzing trace with hash -237158953, now seen corresponding path program 1 times [2021-12-14 19:07:06,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 19:07:06,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123461907] [2021-12-14 19:07:06,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 19:07:06,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 19:07:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:06,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 19:07:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:06,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-14 19:07:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:06,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-14 19:07:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:06,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 19:07:06,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:06,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 19:07:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:06,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 19:07:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:06,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-14 19:07:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:06,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 19:07:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:06,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 19:07:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:06,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 19:07:06,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 19:07:06,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 19:07:06,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 19:07:06,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123461907] [2021-12-14 19:07:06,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123461907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 19:07:06,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 19:07:06,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 19:07:06,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831545729] [2021-12-14 19:07:06,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 19:07:06,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 19:07:06,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 19:07:06,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 19:07:06,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 19:07:06,277 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)