./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0 --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 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-22 14:33:56,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 14:33:56,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 14:33:56,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 14:33:56,398 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 14:33:56,399 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 14:33:56,401 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 14:33:56,404 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 14:33:56,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 14:33:56,408 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 14:33:56,409 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 14:33:56,410 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 14:33:56,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 14:33:56,412 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 14:33:56,414 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 14:33:56,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 14:33:56,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 14:33:56,417 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 14:33:56,420 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 14:33:56,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 14:33:56,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 14:33:56,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 14:33:56,427 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 14:33:56,428 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 14:33:56,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 14:33:56,444 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 14:33:56,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 14:33:56,446 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 14:33:56,446 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 14:33:56,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 14:33:56,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 14:33:56,450 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 14:33:56,451 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 14:33:56,453 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 14:33:56,455 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 14:33:56,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 14:33:56,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 14:33:56,458 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 14:33:56,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 14:33:56,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 14:33:56,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 14:33:56,461 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 14:33:56,503 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 14:33:56,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 14:33:56,504 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 14:33:56,504 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 14:33:56,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 14:33:56,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 14:33:56,506 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 14:33:56,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 14:33:56,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 14:33:56,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 14:33:56,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 14:33:56,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 14:33:56,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 14:33:56,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 14:33:56,509 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 14:33:56,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 14:33:56,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 14:33:56,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 14:33:56,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 14:33:56,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:33:56,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 14:33:56,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 14:33:56,511 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 14:33:56,511 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 14:33:56,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 14:33:56,511 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 14:33:56,512 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 14:33:56,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 14:33:56,512 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 14:33:56,514 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 [2021-11-22 14:33:56,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 14:33:56,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 14:33:56,802 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 14:33:56,803 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 14:33:56,804 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 14:33:56,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2021-11-22 14:33:56,894 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/data/db3c9efae/2337eac24ad34cfd8839c9ae76a52a8d/FLAG02e95a8b3 [2021-11-22 14:33:57,863 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 14:33:57,864 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2021-11-22 14:33:57,910 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/data/db3c9efae/2337eac24ad34cfd8839c9ae76a52a8d/FLAG02e95a8b3 [2021-11-22 14:33:58,236 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/data/db3c9efae/2337eac24ad34cfd8839c9ae76a52a8d [2021-11-22 14:33:58,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 14:33:58,241 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 14:33:58,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 14:33:58,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 14:33:58,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 14:33:58,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:33:58" (1/1) ... [2021-11-22 14:33:58,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d735a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:33:58, skipping insertion in model container [2021-11-22 14:33:58,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:33:58" (1/1) ... [2021-11-22 14:33:58,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 14:33:58,424 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 14:34:01,297 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2021-11-22 14:34:01,367 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:34:01,570 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 14:34:02,201 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2021-11-22 14:34:02,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 14:34:02,761 INFO L208 MainTranslator]: Completed translation [2021-11-22 14:34:02,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:34:02 WrapperNode [2021-11-22 14:34:02,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 14:34:02,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 14:34:02,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 14:34:02,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 14:34:02,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:34:02" (1/1) ... [2021-11-22 14:34:02,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:34:02" (1/1) ... [2021-11-22 14:34:03,991 INFO L137 Inliner]: procedures = 367, calls = 5915, calls flagged for inlining = 1007, calls inlined = 2676, statements flattened = 37497 [2021-11-22 14:34:03,992 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 14:34:03,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 14:34:03,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 14:34:03,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 14:34:04,003 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:34:02" (1/1) ... [2021-11-22 14:34:04,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:34:02" (1/1) ... [2021-11-22 14:34:04,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:34:02" (1/1) ... [2021-11-22 14:34:04,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:34:02" (1/1) ... [2021-11-22 14:34:04,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:34:02" (1/1) ... [2021-11-22 14:34:05,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:34:02" (1/1) ... [2021-11-22 14:34:05,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:34:02" (1/1) ... [2021-11-22 14:34:05,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 14:34:05,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 14:34:05,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 14:34:05,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 14:34:05,576 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:34:02" (1/1) ... [2021-11-22 14:34:05,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 14:34:05,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:34:05,641 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-22 14:34:05,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-22 14:34:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 14:34:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 14:34:05,764 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_queuecommand_lock_or_not [2021-11-22 14:34:05,765 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_queuecommand_lock_or_not [2021-11-22 14:34:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 14:34:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-22 14:34:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 14:34:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-22 14:34:05,765 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 14:34:05,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 14:34:05,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 14:34:05,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 14:34:05,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 14:34:05,766 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_queuecommand [2021-11-22 14:34:05,766 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_queuecommand [2021-11-22 14:34:05,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 14:34:05,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 14:34:05,767 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 14:34:05,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 14:34:05,767 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-22 14:34:05,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-22 14:34:05,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 14:34:05,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 14:34:05,768 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 14:34:07,276 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 14:34:07,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 14:35:29,746 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 14:35:29,804 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 14:35:29,804 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-22 14:35:29,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:35:29 BoogieIcfgContainer [2021-11-22 14:35:29,817 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 14:35:29,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 14:35:29,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 14:35:29,823 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 14:35:29,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:33:58" (1/3) ... [2021-11-22 14:35:29,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8c160e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:35:29, skipping insertion in model container [2021-11-22 14:35:29,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:34:02" (2/3) ... [2021-11-22 14:35:29,824 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d8c160e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:35:29, skipping insertion in model container [2021-11-22 14:35:29,824 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:35:29" (3/3) ... [2021-11-22 14:35:29,826 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2021-11-22 14:35:29,831 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 14:35:29,832 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-22 14:35:29,919 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 14:35:29,931 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 [2021-11-22 14:35:29,932 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-22 14:35:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 6215 states, 6173 states have (on average 1.4320427668880609) internal successors, (8840), 6204 states have internal predecessors, (8840), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-22 14:35:30,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-11-22 14:35:30,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:35:30,083 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:35:30,084 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [scsi_debug_queuecommandErr0ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr1ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-22 14:35:30,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:35:30,093 INFO L85 PathProgramCache]: Analyzing trace with hash -890775282, now seen corresponding path program 1 times [2021-11-22 14:35:30,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:35:30,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479664948] [2021-11-22 14:35:30,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:35:30,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:35:30,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:35:31,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:35:31,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:35:31,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479664948] [2021-11-22 14:35:31,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479664948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:35:31,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:35:31,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:35:31,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272935150] [2021-11-22 14:35:31,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:35:31,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-22 14:35:31,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:35:31,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-22 14:35:31,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:35:31,403 INFO L87 Difference]: Start difference. First operand has 6215 states, 6173 states have (on average 1.4320427668880609) internal successors, (8840), 6204 states have internal predecessors, (8840), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 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) [2021-11-22 14:35:31,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:35:31,708 INFO L93 Difference]: Finished difference Result 12395 states and 17679 transitions. [2021-11-22 14:35:31,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-22 14:35:31,710 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 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 323 [2021-11-22 14:35:31,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:35:31,775 INFO L225 Difference]: With dead ends: 12395 [2021-11-22 14:35:31,776 INFO L226 Difference]: Without dead ends: 6071 [2021-11-22 14:35:31,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-22 14:35:31,815 INFO L933 BasicCegarLoop]: 8639 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8639 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:35:31,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8639 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:35:31,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6071 states. [2021-11-22 14:35:32,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6071 to 6071. [2021-11-22 14:35:32,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6071 states, 6030 states have (on average 1.4024875621890547) internal successors, (8457), 6060 states have internal predecessors, (8457), 7 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2021-11-22 14:35:32,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6071 states to 6071 states and 8471 transitions. [2021-11-22 14:35:32,092 INFO L78 Accepts]: Start accepts. Automaton has 6071 states and 8471 transitions. Word has length 323 [2021-11-22 14:35:32,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:35:32,094 INFO L470 AbstractCegarLoop]: Abstraction has 6071 states and 8471 transitions. [2021-11-22 14:35:32,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 161.5) internal successors, (323), 2 states have internal predecessors, (323), 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) [2021-11-22 14:35:32,095 INFO L276 IsEmpty]: Start isEmpty. Operand 6071 states and 8471 transitions. [2021-11-22 14:35:32,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-11-22 14:35:32,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:35:32,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:35:32,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 14:35:32,105 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [scsi_debug_queuecommandErr0ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr1ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-22 14:35:32,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:35:32,109 INFO L85 PathProgramCache]: Analyzing trace with hash -999997464, now seen corresponding path program 1 times [2021-11-22 14:35:32,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:35:32,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111318038] [2021-11-22 14:35:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:35:32,110 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:35:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:35:33,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:35:33,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:35:33,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111318038] [2021-11-22 14:35:33,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111318038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:35:33,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:35:33,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:35:33,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216972974] [2021-11-22 14:35:33,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:35:33,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:35:33,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:35:33,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:35:33,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:35:33,329 INFO L87 Difference]: Start difference. First operand 6071 states and 8471 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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) [2021-11-22 14:35:34,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:35:34,074 INFO L93 Difference]: Finished difference Result 17546 states and 24694 transitions. [2021-11-22 14:35:34,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:35:34,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 323 [2021-11-22 14:35:34,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:35:34,162 INFO L225 Difference]: With dead ends: 17546 [2021-11-22 14:35:34,163 INFO L226 Difference]: Without dead ends: 11770 [2021-11-22 14:35:34,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:35:34,195 INFO L933 BasicCegarLoop]: 8477 mSDtfsCounter, 8360 mSDsluCounter, 8147 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8360 SdHoareTripleChecker+Valid, 16624 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:35:34,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8360 Valid, 16624 Invalid, 11 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:35:34,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11770 states. [2021-11-22 14:35:34,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11770 to 11665. [2021-11-22 14:35:34,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11665 states, 11614 states have (on average 1.415016359566041) internal successors, (16434), 11644 states have internal predecessors, (16434), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-22 14:35:34,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11665 states to 11665 states and 16462 transitions. [2021-11-22 14:35:34,625 INFO L78 Accepts]: Start accepts. Automaton has 11665 states and 16462 transitions. Word has length 323 [2021-11-22 14:35:34,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:35:34,634 INFO L470 AbstractCegarLoop]: Abstraction has 11665 states and 16462 transitions. [2021-11-22 14:35:34,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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) [2021-11-22 14:35:34,635 INFO L276 IsEmpty]: Start isEmpty. Operand 11665 states and 16462 transitions. [2021-11-22 14:35:34,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-22 14:35:34,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:35:34,643 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:35:34,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 14:35:34,643 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [scsi_debug_queuecommandErr0ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr1ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-22 14:35:34,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:35:34,644 INFO L85 PathProgramCache]: Analyzing trace with hash -68800098, now seen corresponding path program 1 times [2021-11-22 14:35:34,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:35:34,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946638966] [2021-11-22 14:35:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:35:34,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:35:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:35:35,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:35:35,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:35:35,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946638966] [2021-11-22 14:35:35,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946638966] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:35:35,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:35:35,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:35:35,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221825176] [2021-11-22 14:35:35,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:35:35,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:35:35,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:35:35,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:35:35,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:35:35,832 INFO L87 Difference]: Start difference. First operand 11665 states and 16462 transitions. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2021-11-22 14:35:37,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:35:37,057 INFO L93 Difference]: Finished difference Result 34172 states and 48483 transitions. [2021-11-22 14:35:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:35:37,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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 328 [2021-11-22 14:35:37,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:35:37,207 INFO L225 Difference]: With dead ends: 34172 [2021-11-22 14:35:37,208 INFO L226 Difference]: Without dead ends: 22802 [2021-11-22 14:35:37,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:35:37,254 INFO L933 BasicCegarLoop]: 8522 mSDtfsCounter, 8272 mSDsluCounter, 8147 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8272 SdHoareTripleChecker+Valid, 16669 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 14:35:37,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8272 Valid, 16669 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 14:35:37,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22802 states. [2021-11-22 14:35:37,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22802 to 22719. [2021-11-22 14:35:37,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22719 states, 22648 states have (on average 1.4228187919463087) internal successors, (32224), 22678 states have internal predecessors, (32224), 28 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-22 14:35:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22719 states to 22719 states and 32280 transitions. [2021-11-22 14:35:38,222 INFO L78 Accepts]: Start accepts. Automaton has 22719 states and 32280 transitions. Word has length 328 [2021-11-22 14:35:38,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:35:38,223 INFO L470 AbstractCegarLoop]: Abstraction has 22719 states and 32280 transitions. [2021-11-22 14:35:38,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 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) [2021-11-22 14:35:38,224 INFO L276 IsEmpty]: Start isEmpty. Operand 22719 states and 32280 transitions. [2021-11-22 14:35:38,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-11-22 14:35:38,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:35:38,231 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:35:38,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 14:35:38,232 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [scsi_debug_queuecommandErr0ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr1ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-22 14:35:38,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:35:38,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1186389443, now seen corresponding path program 1 times [2021-11-22 14:35:38,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:35:38,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638341398] [2021-11-22 14:35:38,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:35:38,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:35:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:35:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:35:39,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:35:39,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638341398] [2021-11-22 14:35:39,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638341398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:35:39,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:35:39,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 14:35:39,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674216555] [2021-11-22 14:35:39,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:35:39,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:35:39,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:35:39,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:35:39,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:35:39,060 INFO L87 Difference]: Start difference. First operand 22719 states and 32280 transitions. Second operand has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 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) [2021-11-22 14:35:40,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:35:40,425 INFO L93 Difference]: Finished difference Result 48473 states and 68999 transitions. [2021-11-22 14:35:40,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:35:40,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 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 331 [2021-11-22 14:35:40,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:35:40,533 INFO L225 Difference]: With dead ends: 48473 [2021-11-22 14:35:40,533 INFO L226 Difference]: Without dead ends: 26049 [2021-11-22 14:35:40,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:35:40,604 INFO L933 BasicCegarLoop]: 8470 mSDtfsCounter, 1631 mSDsluCounter, 8057 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 16527 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-22 14:35:40,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1631 Valid, 16527 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-22 14:35:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26049 states. [2021-11-22 14:35:41,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26049 to 26029. [2021-11-22 14:35:41,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26029 states, 25958 states have (on average 1.423915555897989) internal successors, (36962), 25988 states have internal predecessors, (36962), 28 states have call successors, (28), 12 states have call predecessors, (28), 12 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2021-11-22 14:35:41,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26029 states to 26029 states and 37018 transitions. [2021-11-22 14:35:41,837 INFO L78 Accepts]: Start accepts. Automaton has 26029 states and 37018 transitions. Word has length 331 [2021-11-22 14:35:41,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:35:41,838 INFO L470 AbstractCegarLoop]: Abstraction has 26029 states and 37018 transitions. [2021-11-22 14:35:41,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 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) [2021-11-22 14:35:41,839 INFO L276 IsEmpty]: Start isEmpty. Operand 26029 states and 37018 transitions. [2021-11-22 14:35:41,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-22 14:35:41,847 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:35:41,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:35:41,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 14:35:41,848 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [scsi_debug_queuecommandErr0ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr1ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-22 14:35:41,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:35:41,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1189564775, now seen corresponding path program 1 times [2021-11-22 14:35:41,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:35:41,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557791336] [2021-11-22 14:35:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:35:41,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:35:42,346 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:35:42,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2078443342] [2021-11-22 14:35:42,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:35:42,347 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:35:42,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:35:42,351 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:35:42,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 14:35:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:35:45,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 12294 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 14:35:45,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:35:47,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:35:47,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:35:47,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:35:47,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557791336] [2021-11-22 14:35:47,996 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:35:47,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078443342] [2021-11-22 14:35:47,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078443342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:35:47,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:35:47,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:35:47,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764914805] [2021-11-22 14:35:47,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:35:47,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:35:47,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:35:48,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:35:48,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:35:48,000 INFO L87 Difference]: Start difference. First operand 26029 states and 37018 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 2 states have internal predecessors, (344), 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) [2021-11-22 14:35:49,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:35:49,382 INFO L93 Difference]: Finished difference Result 77489 states and 110464 transitions. [2021-11-22 14:35:49,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:35:49,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 2 states have internal predecessors, (344), 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 344 [2021-11-22 14:35:49,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:35:49,588 INFO L225 Difference]: With dead ends: 77489 [2021-11-22 14:35:49,589 INFO L226 Difference]: Without dead ends: 51755 [2021-11-22 14:35:49,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:35:49,654 INFO L933 BasicCegarLoop]: 8498 mSDtfsCounter, 8134 mSDsluCounter, 8143 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8134 SdHoareTripleChecker+Valid, 16641 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:35:49,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8134 Valid, 16641 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:35:49,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51755 states. [2021-11-22 14:35:51,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51755 to 51693. [2021-11-22 14:35:51,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51693 states, 51582 states have (on average 1.4256523593501609) internal successors, (73538), 51612 states have internal predecessors, (73538), 56 states have call successors, (56), 24 states have call predecessors, (56), 24 states have return successors, (84), 56 states have call predecessors, (84), 56 states have call successors, (84) [2021-11-22 14:35:51,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51693 states to 51693 states and 73678 transitions. [2021-11-22 14:35:51,518 INFO L78 Accepts]: Start accepts. Automaton has 51693 states and 73678 transitions. Word has length 344 [2021-11-22 14:35:51,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:35:51,519 INFO L470 AbstractCegarLoop]: Abstraction has 51693 states and 73678 transitions. [2021-11-22 14:35:51,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 2 states have internal predecessors, (344), 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) [2021-11-22 14:35:51,520 INFO L276 IsEmpty]: Start isEmpty. Operand 51693 states and 73678 transitions. [2021-11-22 14:35:51,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-22 14:35:51,527 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:35:51,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:35:51,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-22 14:35:51,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:35:51,756 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [scsi_debug_queuecommandErr0ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr1ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-22 14:35:51,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:35:51,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1998911401, now seen corresponding path program 1 times [2021-11-22 14:35:51,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:35:51,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516942726] [2021-11-22 14:35:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:35:51,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:35:52,351 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:35:52,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535934802] [2021-11-22 14:35:52,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:35:52,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:35:52,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:35:52,353 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:35:52,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 14:35:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:35:55,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 12294 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 14:35:55,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:35:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:35:57,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:35:57,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:35:57,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516942726] [2021-11-22 14:35:57,743 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:35:57,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535934802] [2021-11-22 14:35:57,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535934802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:35:57,744 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:35:57,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:35:57,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732245674] [2021-11-22 14:35:57,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:35:57,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:35:57,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:35:57,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:35:57,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:35:57,747 INFO L87 Difference]: Start difference. First operand 51693 states and 73678 transitions. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 2 states have internal predecessors, (344), 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) [2021-11-22 14:35:59,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:35:59,627 INFO L93 Difference]: Finished difference Result 152713 states and 218296 transitions. [2021-11-22 14:35:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:35:59,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 2 states have internal predecessors, (344), 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 344 [2021-11-22 14:35:59,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:36:00,016 INFO L225 Difference]: With dead ends: 152713 [2021-11-22 14:36:00,016 INFO L226 Difference]: Without dead ends: 101315 [2021-11-22 14:36:00,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:36:00,171 INFO L933 BasicCegarLoop]: 8473 mSDtfsCounter, 8034 mSDsluCounter, 7952 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8034 SdHoareTripleChecker+Valid, 16425 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 14:36:00,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8034 Valid, 16425 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 14:36:00,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101315 states. [2021-11-22 14:36:03,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101315 to 101269. [2021-11-22 14:36:03,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101269 states, 101078 states have (on average 1.4274322800213697) internal successors, (144282), 101108 states have internal predecessors, (144282), 112 states have call successors, (112), 48 states have call predecessors, (112), 48 states have return successors, (252), 112 states have call predecessors, (252), 112 states have call successors, (252) [2021-11-22 14:36:03,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101269 states to 101269 states and 144646 transitions. [2021-11-22 14:36:03,690 INFO L78 Accepts]: Start accepts. Automaton has 101269 states and 144646 transitions. Word has length 344 [2021-11-22 14:36:03,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:36:03,691 INFO L470 AbstractCegarLoop]: Abstraction has 101269 states and 144646 transitions. [2021-11-22 14:36:03,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 2 states have internal predecessors, (344), 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) [2021-11-22 14:36:03,692 INFO L276 IsEmpty]: Start isEmpty. Operand 101269 states and 144646 transitions. [2021-11-22 14:36:03,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-11-22 14:36:03,701 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:36:03,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:36:03,760 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 14:36:03,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-22 14:36:03,916 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [scsi_debug_queuecommandErr0ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr1ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-22 14:36:03,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:36:03,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1612802651, now seen corresponding path program 1 times [2021-11-22 14:36:03,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:36:03,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198865161] [2021-11-22 14:36:03,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:36:03,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:36:04,274 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:36:04,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1076331243] [2021-11-22 14:36:04,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:36:04,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:36:04,275 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:36:04,276 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:36:04,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 14:36:07,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:36:07,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 12293 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 14:36:07,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:36:09,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:36:09,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:36:09,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:36:09,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198865161] [2021-11-22 14:36:09,694 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:36:09,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076331243] [2021-11-22 14:36:09,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076331243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:36:09,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:36:09,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:36:09,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521660602] [2021-11-22 14:36:09,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:36:09,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:36:09,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:36:09,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:36:09,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:36:09,698 INFO L87 Difference]: Start difference. First operand 101269 states and 144646 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 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) [2021-11-22 14:36:12,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:36:12,018 INFO L93 Difference]: Finished difference Result 202243 states and 288977 transitions. [2021-11-22 14:36:12,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:36:12,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 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 345 [2021-11-22 14:36:12,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:36:12,353 INFO L225 Difference]: With dead ends: 202243 [2021-11-22 14:36:12,354 INFO L226 Difference]: Without dead ends: 101269 [2021-11-22 14:36:12,922 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:36:12,923 INFO L933 BasicCegarLoop]: 8463 mSDtfsCounter, 8135 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8135 SdHoareTripleChecker+Valid, 8463 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:36:12,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8135 Valid, 8463 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:36:13,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101269 states. [2021-11-22 14:36:15,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101269 to 101269. [2021-11-22 14:36:15,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101269 states, 101078 states have (on average 1.4271156928312787) internal successors, (144250), 101108 states have internal predecessors, (144250), 112 states have call successors, (112), 48 states have call predecessors, (112), 48 states have return successors, (252), 112 states have call predecessors, (252), 112 states have call successors, (252) [2021-11-22 14:36:15,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101269 states to 101269 states and 144614 transitions. [2021-11-22 14:36:15,630 INFO L78 Accepts]: Start accepts. Automaton has 101269 states and 144614 transitions. Word has length 345 [2021-11-22 14:36:15,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 14:36:15,631 INFO L470 AbstractCegarLoop]: Abstraction has 101269 states and 144614 transitions. [2021-11-22 14:36:15,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 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) [2021-11-22 14:36:15,631 INFO L276 IsEmpty]: Start isEmpty. Operand 101269 states and 144614 transitions. [2021-11-22 14:36:15,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-11-22 14:36:15,640 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 14:36:15,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 14:36:15,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-22 14:36:15,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-22 14:36:15,856 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [scsi_debug_queuecommandErr0ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr1ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-22 14:36:15,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 14:36:15,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2005829661, now seen corresponding path program 1 times [2021-11-22 14:36:15,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 14:36:15,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141423730] [2021-11-22 14:36:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:36:15,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 14:36:16,204 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-22 14:36:16,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [988830969] [2021-11-22 14:36:16,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 14:36:16,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 14:36:16,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 [2021-11-22 14:36:16,206 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 14:36:16,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_61856773-7e88-4042-9af9-e78799c45bac/bin/uautomizer-w2VwFs6gM0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 14:36:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 14:36:19,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 12291 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-22 14:36:19,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 14:36:21,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 14:36:21,415 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 14:36:21,415 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 14:36:21,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141423730] [2021-11-22 14:36:21,416 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-22 14:36:21,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [988830969] [2021-11-22 14:36:21,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [988830969] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 14:36:21,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 14:36:21,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 14:36:21,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394245978] [2021-11-22 14:36:21,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 14:36:21,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 14:36:21,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 14:36:21,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 14:36:21,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:36:21,419 INFO L87 Difference]: Start difference. First operand 101269 states and 144614 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 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) [2021-11-22 14:36:23,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 14:36:23,758 INFO L93 Difference]: Finished difference Result 202243 states and 288913 transitions. [2021-11-22 14:36:23,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 14:36:23,758 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 2 states have internal predecessors, (345), 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 345 [2021-11-22 14:36:23,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 14:36:24,067 INFO L225 Difference]: With dead ends: 202243 [2021-11-22 14:36:24,067 INFO L226 Difference]: Without dead ends: 101269 [2021-11-22 14:36:24,282 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 14:36:24,283 INFO L933 BasicCegarLoop]: 8463 mSDtfsCounter, 8129 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8129 SdHoareTripleChecker+Valid, 8463 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 14:36:24,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8129 Valid, 8463 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 14:36:24,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101269 states.