./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_sas.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_sas.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash d4a04f164f23bccd0af71a4f58b3950d923042f92e5233e5b981a5aec1f8e73c --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 17:05:57,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 17:05:57,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 17:05:57,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 17:05:57,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 17:05:57,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 17:05:57,795 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 17:05:57,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 17:05:57,812 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 17:05:57,813 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 17:05:57,814 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 17:05:57,814 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 17:05:57,815 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 17:05:57,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 17:05:57,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 17:05:57,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 17:05:57,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 17:05:57,818 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 17:05:57,820 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 17:05:57,821 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 17:05:57,822 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 17:05:57,823 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 17:05:57,824 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 17:05:57,824 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 17:05:57,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 17:05:57,826 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 17:05:57,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 17:05:57,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 17:05:57,836 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 17:05:57,839 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 17:05:57,839 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 17:05:57,839 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 17:05:57,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 17:05:57,841 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 17:05:57,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 17:05:57,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 17:05:57,845 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 17:05:57,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 17:05:57,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 17:05:57,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 17:05:57,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 17:05:57,850 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 17:05:57,872 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 17:05:57,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 17:05:57,872 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 17:05:57,873 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 17:05:57,874 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 17:05:57,874 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 17:05:57,874 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 17:05:57,874 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 17:05:57,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 17:05:57,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 17:05:57,875 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 17:05:57,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 17:05:57,876 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 17:05:57,876 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 17:05:57,876 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 17:05:57,876 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 17:05:57,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 17:05:57,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 17:05:57,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 17:05:57,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 17:05:57,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 17:05:57,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 17:05:57,877 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 17:05:57,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 17:05:57,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 17:05:57,878 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 17:05:57,878 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 17:05:57,878 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 17:05:57,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 17:05:57,878 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4a04f164f23bccd0af71a4f58b3950d923042f92e5233e5b981a5aec1f8e73c [2021-11-05 17:05:58,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 17:05:58,138 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 17:05:58,140 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 17:05:58,141 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 17:05:58,141 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 17:05:58,142 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_sas.ko-entry_point.cil.out.i [2021-11-05 17:05:58,187 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce8a7cb3/d37bde77954b458b87daebb082b88750/FLAG824c7846f [2021-11-05 17:05:58,930 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 17:05:58,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_sas.ko-entry_point.cil.out.i [2021-11-05 17:05:58,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce8a7cb3/d37bde77954b458b87daebb082b88750/FLAG824c7846f [2021-11-05 17:05:59,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce8a7cb3/d37bde77954b458b87daebb082b88750 [2021-11-05 17:05:59,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 17:05:59,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 17:05:59,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 17:05:59,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 17:05:59,501 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 17:05:59,501 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 05:05:59" (1/1) ... [2021-11-05 17:05:59,502 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a9d5ebf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:05:59, skipping insertion in model container [2021-11-05 17:05:59,502 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 05:05:59" (1/1) ... [2021-11-05 17:05:59,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 17:05:59,627 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 17:06:00,057 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5732] [2021-11-05 17:06:00,058 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5733-5734] [2021-11-05 17:06:00,751 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_sas.ko-entry_point.cil.out.i[176188,176201] [2021-11-05 17:06:03,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 17:06:03,407 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 17:06:03,480 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5732] [2021-11-05 17:06:03,480 WARN L1236 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5733-5734] [2021-11-05 17:06:03,494 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_sas.ko-entry_point.cil.out.i[176188,176201] [2021-11-05 17:06:04,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 17:06:04,359 INFO L208 MainTranslator]: Completed translation [2021-11-05 17:06:04,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:06:04 WrapperNode [2021-11-05 17:06:04,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 17:06:04,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 17:06:04,361 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 17:06:04,361 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 17:06:04,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:06:04" (1/1) ... [2021-11-05 17:06:04,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:06:04" (1/1) ... [2021-11-05 17:06:10,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 17:06:10,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 17:06:10,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 17:06:10,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 17:06:10,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:06:04" (1/1) ... [2021-11-05 17:06:10,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:06:04" (1/1) ... [2021-11-05 17:06:11,992 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:06:04" (1/1) ... [2021-11-05 17:06:11,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:06:04" (1/1) ... [2021-11-05 17:06:14,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:06:04" (1/1) ... [2021-11-05 17:06:14,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:06:04" (1/1) ... [2021-11-05 17:06:15,315 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:06:04" (1/1) ... [2021-11-05 17:06:16,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 17:06:16,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 17:06:16,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 17:06:16,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 17:06:16,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:06:04" (1/1) ... [2021-11-05 17:06:16,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 17:06:16,382 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:06:16,396 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) [2021-11-05 17:06:16,419 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 [2021-11-05 17:06:16,442 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_issue_init_mfi [2021-11-05 17:06:16,442 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_issue_init_mfi [2021-11-05 17:06:16,442 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_shutdown [2021-11-05 17:06:16,442 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_shutdown [2021-11-05 17:06:16,442 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_u32 [2021-11-05 17:06:16,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 17:06:16,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-05 17:06:16,442 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_queue_command_lck [2021-11-05 17:06:16,442 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_queue_command_lck [2021-11-05 17:06:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-05 17:06:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 17:06:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_fusion_ocr_wq [2021-11-05 17:06:16,443 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_fusion_ocr_wq [2021-11-05 17:06:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 17:06:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure process_fw_state_change_wq [2021-11-05 17:06:16,443 INFO L138 BoogieDeclarations]: Found implementation of procedure process_fw_state_change_wq [2021-11-05 17:06:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 17:06:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-05 17:06:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 17:06:16,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-05 17:06:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_ioc_init_fusion [2021-11-05 17:06:16,443 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_ioc_init_fusion [2021-11-05 17:06:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_init_fw [2021-11-05 17:06:16,443 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_init_fw [2021-11-05 17:06:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~~u32~0 [2021-11-05 17:06:16,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~~u32~0 [2021-11-05 17:06:16,443 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_transition_to_ready [2021-11-05 17:06:16,444 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_transition_to_ready [2021-11-05 17:06:16,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 17:06:16,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 17:06:16,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-05 17:06:16,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-05 17:06:16,444 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-05 17:06:16,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 17:06:16,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 17:06:16,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 17:06:16,444 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_init_adapter_mfi [2021-11-05 17:06:16,444 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_init_adapter_mfi [2021-11-05 17:06:16,444 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_complete_cmd_dpc_fusion [2021-11-05 17:06:16,444 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_complete_cmd_dpc_fusion [2021-11-05 17:06:16,444 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_probe_one [2021-11-05 17:06:16,444 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_probe_one [2021-11-05 17:06:16,444 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_reset_fusion [2021-11-05 17:06:16,444 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_reset_fusion [2021-11-05 17:06:16,444 INFO L130 BoogieDeclarations]: Found specification of procedure complete_cmd_fusion [2021-11-05 17:06:16,444 INFO L138 BoogieDeclarations]: Found implementation of procedure complete_cmd_fusion [2021-11-05 17:06:16,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 17:06:16,445 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_queue_command [2021-11-05 17:06:16,445 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_queue_command [2021-11-05 17:06:16,445 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_complete_cmd [2021-11-05 17:06:16,445 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_complete_cmd [2021-11-05 17:06:16,445 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_wait_for_outstanding_fusion [2021-11-05 17:06:16,445 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_wait_for_outstanding_fusion [2021-11-05 17:06:16,445 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 17:06:16,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-05 17:06:16,445 INFO L130 BoogieDeclarations]: Found specification of procedure delayed_work_timer_fn [2021-11-05 17:06:16,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 17:06:16,445 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_detach_one [2021-11-05 17:06:16,445 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_detach_one [2021-11-05 17:06:16,445 INFO L130 BoogieDeclarations]: Found specification of procedure megasas_init_adapter_fusion [2021-11-05 17:06:16,445 INFO L138 BoogieDeclarations]: Found implementation of procedure megasas_init_adapter_fusion [2021-11-05 17:09:21,618 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 17:09:21,618 INFO L299 CfgBuilder]: Removed 53573 assume(true) statements. [2021-11-05 17:09:21,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 05:09:21 BoogieIcfgContainer [2021-11-05 17:09:21,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 17:09:21,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 17:09:21,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 17:09:21,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 17:09:21,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 05:05:59" (1/3) ... [2021-11-05 17:09:21,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfc685b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 05:09:21, skipping insertion in model container [2021-11-05 17:09:21,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 05:06:04" (2/3) ... [2021-11-05 17:09:21,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cfc685b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 05:09:21, skipping insertion in model container [2021-11-05 17:09:21,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 05:09:21" (3/3) ... [2021-11-05 17:09:21,651 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--scsi--megaraid--megaraid_sas.ko-entry_point.cil.out.i [2021-11-05 17:09:21,654 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 17:09:21,655 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-05 17:09:21,747 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 17:09:21,751 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 [2021-11-05 17:09:21,751 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-05 17:09:22,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 38559 states, 38110 states have (on average 1.3580425085279455) internal successors, (51755), 38135 states have internal predecessors, (51755), 408 states have call successors, (408), 21 states have call predecessors, (408), 21 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) [2021-11-05 17:09:22,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-05 17:09:22,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:09:22,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:09:22,102 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [megasas_init_adapter_mfiErr0ASSERT_VIOLATIONERROR_FUNCTION, megasas_init_adapter_mfiErr1ASSERT_VIOLATIONERROR_FUNCTION, megasas_init_adapter_mfiErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:09:22,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:09:22,106 INFO L85 PathProgramCache]: Analyzing trace with hash -174714593, now seen corresponding path program 1 times [2021-11-05 17:09:22,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:09:22,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9647101] [2021-11-05 17:09:22,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:09:22,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:09:22,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:09:22,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:09:22,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:09:22,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9647101] [2021-11-05 17:09:22,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9647101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:09:22,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 17:09:22,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-05 17:09:22,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354899813] [2021-11-05 17:09:22,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:09:22,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:09:22,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:09:23,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:09:23,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:09:23,055 INFO L87 Difference]: Start difference. First operand has 38559 states, 38110 states have (on average 1.3580425085279455) internal successors, (51755), 38135 states have internal predecessors, (51755), 408 states have call successors, (408), 21 states have call predecessors, (408), 21 states have return successors, (408), 405 states have call predecessors, (408), 408 states have call successors, (408) Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:25,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:09:25,643 INFO L93 Difference]: Finished difference Result 114293 states and 156647 transitions. [2021-11-05 17:09:25,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:09:25,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 86 [2021-11-05 17:09:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:09:26,167 INFO L225 Difference]: With dead ends: 114293 [2021-11-05 17:09:26,167 INFO L226 Difference]: Without dead ends: 75329 [2021-11-05 17:09:26,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.63ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-05 17:09:26,782 INFO L933 BasicCegarLoop]: 52923 mSDtfsCounter, 50765 mSDsluCounter, 52215 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.95ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 50765 SdHoareTripleChecker+Valid, 105138 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 170.29ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 137.87ms IncrementalHoareTripleChecker+Time [2021-11-05 17:09:26,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50765 Valid, 105138 Invalid, 35 Unknown, 0 Unchecked, 170.29ms Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 137.87ms Time] [2021-11-05 17:09:26,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75329 states. [2021-11-05 17:09:28,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75329 to 75289. [2021-11-05 17:09:28,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75289 states, 74412 states have (on average 1.3514890071493846) internal successors, (100567), 74442 states have internal predecessors, (100567), 816 states have call successors, (816), 42 states have call predecessors, (816), 42 states have return successors, (816), 810 states have call predecessors, (816), 816 states have call successors, (816) [2021-11-05 17:09:29,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75289 states to 75289 states and 102199 transitions. [2021-11-05 17:09:29,654 INFO L78 Accepts]: Start accepts. Automaton has 75289 states and 102199 transitions. Word has length 86 [2021-11-05 17:09:29,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 17:09:29,657 INFO L470 AbstractCegarLoop]: Abstraction has 75289 states and 102199 transitions. [2021-11-05 17:09:29,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-05 17:09:29,658 INFO L276 IsEmpty]: Start isEmpty. Operand 75289 states and 102199 transitions. [2021-11-05 17:09:29,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-05 17:09:29,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 17:09:29,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 17:09:29,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 17:09:29,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting megasas_init_adapter_fusionErr0ASSERT_VIOLATIONERROR_FUNCTION === [megasas_init_adapter_mfiErr0ASSERT_VIOLATIONERROR_FUNCTION, megasas_init_adapter_mfiErr1ASSERT_VIOLATIONERROR_FUNCTION, megasas_init_adapter_mfiErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-05 17:09:29,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 17:09:29,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1973077234, now seen corresponding path program 1 times [2021-11-05 17:09:29,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 17:09:29,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364878562] [2021-11-05 17:09:29,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:09:29,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 17:09:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:09:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-05 17:09:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:09:30,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 17:09:30,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 17:09:30,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364878562] [2021-11-05 17:09:30,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364878562] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-05 17:09:30,147 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495473302] [2021-11-05 17:09:30,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 17:09:30,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 17:09:30,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 17:09:30,149 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 17:09:30,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 17:09:33,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 17:09:33,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 4501 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-05 17:09:33,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 17:09:33,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-05 17:09:33,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 17:09:33,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495473302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 17:09:33,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-05 17:09:33,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-05 17:09:33,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874660334] [2021-11-05 17:09:33,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 17:09:33,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-05 17:09:33,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 17:09:33,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-05 17:09:33,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:09:33,605 INFO L87 Difference]: Start difference. First operand 75289 states and 102199 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-05 17:09:37,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 17:09:37,104 INFO L93 Difference]: Finished difference Result 218361 states and 296529 transitions. [2021-11-05 17:09:37,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-05 17:09:37,105 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2021-11-05 17:09:37,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 17:09:38,257 INFO L225 Difference]: With dead ends: 218361 [2021-11-05 17:09:38,257 INFO L226 Difference]: Without dead ends: 143222 [2021-11-05 17:09:38,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.97ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-05 17:09:38,966 INFO L933 BasicCegarLoop]: 52360 mSDtfsCounter, 47138 mSDsluCounter, 51766 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 280.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47138 SdHoareTripleChecker+Valid, 104126 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 95.69ms SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 330.09ms IncrementalHoareTripleChecker+Time [2021-11-05 17:09:38,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47138 Valid, 104126 Invalid, 130 Unknown, 0 Unchecked, 95.69ms Time], IncrementalHoareTripleChecker [26 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 330.09ms Time] [2021-11-05 17:09:39,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143222 states. [2021-11-05 17:09:41,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143222 to 143072. [2021-11-05 17:09:41,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143072 states, 141433 states have (on average 1.3521596798484088) internal successors, (191240), 141475 states have internal predecessors, (191240), 1536 states have call successors, (1536), 84 states have call predecessors, (1536), 84 states have return successors, (1536), 1524 states have call predecessors, (1536), 1536 states have call successors, (1536)