./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 173e3943 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-173e394 [2021-11-06 17:48:38,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-06 17:48:38,719 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-06 17:48:38,751 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-06 17:48:38,752 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-06 17:48:38,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-06 17:48:38,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-06 17:48:38,763 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-06 17:48:38,764 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-06 17:48:38,765 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-06 17:48:38,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-06 17:48:38,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-06 17:48:38,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-06 17:48:38,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-06 17:48:38,768 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-06 17:48:38,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-06 17:48:38,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-06 17:48:38,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-06 17:48:38,772 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-06 17:48:38,774 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-06 17:48:38,775 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-06 17:48:38,780 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-06 17:48:38,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-06 17:48:38,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-06 17:48:38,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-06 17:48:38,790 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-06 17:48:38,791 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-06 17:48:38,791 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-06 17:48:38,792 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-06 17:48:38,792 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-06 17:48:38,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-06 17:48:38,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-06 17:48:38,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-06 17:48:38,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-06 17:48:38,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-06 17:48:38,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-06 17:48:38,799 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-06 17:48:38,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-06 17:48:38,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-06 17:48:38,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-06 17:48:38,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-06 17:48:38,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-06 17:48:38,836 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-06 17:48:38,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-06 17:48:38,837 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-06 17:48:38,837 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-06 17:48:38,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-06 17:48:38,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-06 17:48:38,839 INFO L138 SettingsManager]: * Use SBE=true [2021-11-06 17:48:38,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-06 17:48:38,839 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-06 17:48:38,839 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-06 17:48:38,840 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-06 17:48:38,840 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-06 17:48:38,841 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-06 17:48:38,841 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-06 17:48:38,841 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-06 17:48:38,841 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-06 17:48:38,841 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-06 17:48:38,841 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-06 17:48:38,842 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-06 17:48:38,842 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:48:38,842 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-06 17:48:38,842 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-06 17:48:38,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-06 17:48:38,842 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-06 17:48:38,843 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-06 17:48:38,843 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-06 17:48:38,843 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-06 17:48:38,843 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-06 17:48:38,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-06 17:48:38,844 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 [2021-11-06 17:48:39,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-06 17:48:39,079 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-06 17:48:39,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-06 17:48:39,081 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-06 17:48:39,082 INFO L275 PluginConnector]: CDTParser initialized [2021-11-06 17:48:39,083 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../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 [2021-11-06 17:48:39,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c6b3e83b/ab630fa7ee064c98947aa7b9faa9ff7c/FLAG5fde5be16 [2021-11-06 17:48:39,840 INFO L306 CDTParser]: Found 1 translation units. [2021-11-06 17:48:39,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/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 [2021-11-06 17:48:39,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c6b3e83b/ab630fa7ee064c98947aa7b9faa9ff7c/FLAG5fde5be16 [2021-11-06 17:48:40,107 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9c6b3e83b/ab630fa7ee064c98947aa7b9faa9ff7c [2021-11-06 17:48:40,110 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-06 17:48:40,111 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-06 17:48:40,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-06 17:48:40,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-06 17:48:40,117 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-06 17:48:40,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:48:40" (1/1) ... [2021-11-06 17:48:40,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a2633b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:48:40, skipping insertion in model container [2021-11-06 17:48:40,120 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 05:48:40" (1/1) ... [2021-11-06 17:48:40,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-06 17:48:40,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-06 17:48:42,734 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2021-11-06 17:48:42,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:48:42,902 INFO L203 MainTranslator]: Completed pre-run [2021-11-06 17:48:43,420 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2021-11-06 17:48:43,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-06 17:48:43,647 INFO L208 MainTranslator]: Completed translation [2021-11-06 17:48:43,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:48:43 WrapperNode [2021-11-06 17:48:43,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-06 17:48:43,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-06 17:48:43,665 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-06 17:48:43,665 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-06 17:48:43,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:48:43" (1/1) ... [2021-11-06 17:48:43,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:48:43" (1/1) ... [2021-11-06 17:48:44,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-06 17:48:44,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-06 17:48:44,833 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-06 17:48:44,833 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-06 17:48:44,862 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:48:43" (1/1) ... [2021-11-06 17:48:44,862 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:48:43" (1/1) ... [2021-11-06 17:48:45,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:48:43" (1/1) ... [2021-11-06 17:48:45,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:48:43" (1/1) ... [2021-11-06 17:48:45,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:48:43" (1/1) ... [2021-11-06 17:48:45,965 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:48:43" (1/1) ... [2021-11-06 17:48:46,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:48:43" (1/1) ... [2021-11-06 17:48:46,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-06 17:48:46,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-06 17:48:46,227 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-06 17:48:46,227 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-06 17:48:46,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:48:43" (1/1) ... [2021-11-06 17:48:46,235 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-06 17:48:46,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:48:46,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-06 17:48:46,290 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-06 17:48:46,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-06 17:48:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_queuecommand_lock_or_not [2021-11-06 17:48:46,292 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_queuecommand_lock_or_not [2021-11-06 17:48:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-06 17:48:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-06 17:48:46,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-06 17:48:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-06 17:48:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-06 17:48:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-06 17:48:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-06 17:48:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-06 17:48:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-06 17:48:46,293 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_queuecommand [2021-11-06 17:48:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_queuecommand [2021-11-06 17:48:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-06 17:48:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-06 17:48:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-06 17:48:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 17:48:46,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-06 17:48:46,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-06 17:48:46,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-06 17:48:46,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-06 17:48:46,285 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-06 17:50:14,164 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-06 17:50:14,164 INFO L299 CfgBuilder]: Removed 5351 assume(true) statements. [2021-11-06 17:50:14,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:50:14 BoogieIcfgContainer [2021-11-06 17:50:14,169 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-06 17:50:14,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-06 17:50:14,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-06 17:50:14,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-06 17:50:14,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 05:48:40" (1/3) ... [2021-11-06 17:50:14,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da1e079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:50:14, skipping insertion in model container [2021-11-06 17:50:14,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 05:48:43" (2/3) ... [2021-11-06 17:50:14,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5da1e079 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 05:50:14, skipping insertion in model container [2021-11-06 17:50:14,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 05:50:14" (3/3) ... [2021-11-06 17:50:14,181 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2021-11-06 17:50:14,185 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-06 17:50:14,185 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-06 17:50:14,252 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-06 17:50:14,264 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 [2021-11-06 17:50:14,270 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-06 17:50:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand has 5793 states, 5751 states have (on average 1.4637454355764214) internal successors, (8418), 5782 states have internal predecessors, (8418), 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) [2021-11-06 17:50:14,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-11-06 17:50:14,381 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:50:14,382 INFO L513 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] [2021-11-06 17:50:14,382 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)] === [2021-11-06 17:50:14,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:50:14,389 INFO L85 PathProgramCache]: Analyzing trace with hash -686855059, now seen corresponding path program 1 times [2021-11-06 17:50:14,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:50:14,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131901630] [2021-11-06 17:50:14,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:14,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:50:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:50:15,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:50:15,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:50:15,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131901630] [2021-11-06 17:50:15,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131901630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:50:15,600 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:50:15,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:50:15,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315547146] [2021-11-06 17:50:15,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-06 17:50:15,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:50:15,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-06 17:50:15,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-06 17:50:15,639 INFO L87 Difference]: Start difference. First operand has 5793 states, 5751 states have (on average 1.4637454355764214) internal successors, (8418), 5782 states have internal predecessors, (8418), 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) [2021-11-06 17:50:15,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:50:15,848 INFO L93 Difference]: Finished difference Result 11582 states and 16866 transitions. [2021-11-06 17:50:15,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-06 17:50:15,850 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 [2021-11-06 17:50:15,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:50:15,893 INFO L225 Difference]: With dead ends: 11582 [2021-11-06 17:50:15,893 INFO L226 Difference]: Without dead ends: 5702 [2021-11-06 17:50:15,920 INFO L786 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 [2021-11-06 17:50:15,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5702 states. [2021-11-06 17:50:16,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5702 to 5702. [2021-11-06 17:50:16,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5702 states, 5661 states have (on average 1.4287228404875463) internal successors, (8088), 5691 states have internal predecessors, (8088), 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) [2021-11-06 17:50:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 8102 transitions. [2021-11-06 17:50:16,125 INFO L78 Accepts]: Start accepts. Automaton has 5702 states and 8102 transitions. Word has length 323 [2021-11-06 17:50:16,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:50:16,127 INFO L470 AbstractCegarLoop]: Abstraction has 5702 states and 8102 transitions. [2021-11-06 17:50:16,128 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) [2021-11-06 17:50:16,128 INFO L276 IsEmpty]: Start isEmpty. Operand 5702 states and 8102 transitions. [2021-11-06 17:50:16,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2021-11-06 17:50:16,132 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:50:16,133 INFO L513 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] [2021-11-06 17:50:16,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-06 17:50:16,133 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)] === [2021-11-06 17:50:16,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:50:16,136 INFO L85 PathProgramCache]: Analyzing trace with hash -783288695, now seen corresponding path program 1 times [2021-11-06 17:50:16,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:50:16,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836697497] [2021-11-06 17:50:16,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:16,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:50:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:50:17,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:50:17,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:50:17,176 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836697497] [2021-11-06 17:50:17,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836697497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:50:17,176 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:50:17,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:50:17,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417199420] [2021-11-06 17:50:17,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:50:17,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:50:17,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:50:17,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:50:17,179 INFO L87 Difference]: Start difference. First operand 5702 states and 8102 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) [2021-11-06 17:50:17,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:50:17,950 INFO L93 Difference]: Finished difference Result 16439 states and 23587 transitions. [2021-11-06 17:50:17,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:50:17,951 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 [2021-11-06 17:50:17,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:50:18,012 INFO L225 Difference]: With dead ends: 16439 [2021-11-06 17:50:18,013 INFO L226 Difference]: Without dead ends: 11032 [2021-11-06 17:50:18,037 INFO L786 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 [2021-11-06 17:50:18,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11032 states. [2021-11-06 17:50:18,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11032 to 10927. [2021-11-06 17:50:18,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10927 states, 10876 states have (on average 1.443177638837808) internal successors, (15696), 10906 states have internal predecessors, (15696), 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) [2021-11-06 17:50:18,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10927 states to 10927 states and 15724 transitions. [2021-11-06 17:50:18,320 INFO L78 Accepts]: Start accepts. Automaton has 10927 states and 15724 transitions. Word has length 323 [2021-11-06 17:50:18,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:50:18,324 INFO L470 AbstractCegarLoop]: Abstraction has 10927 states and 15724 transitions. [2021-11-06 17:50:18,325 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) [2021-11-06 17:50:18,327 INFO L276 IsEmpty]: Start isEmpty. Operand 10927 states and 15724 transitions. [2021-11-06 17:50:18,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-11-06 17:50:18,331 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:50:18,332 INFO L513 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] [2021-11-06 17:50:18,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-06 17:50:18,333 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)] === [2021-11-06 17:50:18,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:50:18,333 INFO L85 PathProgramCache]: Analyzing trace with hash -981089314, now seen corresponding path program 1 times [2021-11-06 17:50:18,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:50:18,337 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943477339] [2021-11-06 17:50:18,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:18,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:50:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:50:19,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:50:19,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:50:19,175 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943477339] [2021-11-06 17:50:19,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943477339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:50:19,175 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:50:19,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:50:19,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322207088] [2021-11-06 17:50:19,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:50:19,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:50:19,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:50:19,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:50:19,177 INFO L87 Difference]: Start difference. First operand 10927 states and 15724 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) [2021-11-06 17:50:19,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:50:19,909 INFO L93 Difference]: Finished difference Result 31980 states and 46291 transitions. [2021-11-06 17:50:19,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:50:19,910 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 [2021-11-06 17:50:19,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:50:20,026 INFO L225 Difference]: With dead ends: 31980 [2021-11-06 17:50:20,026 INFO L226 Difference]: Without dead ends: 21348 [2021-11-06 17:50:20,073 INFO L786 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 [2021-11-06 17:50:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21348 states. [2021-11-06 17:50:20,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21348 to 21265. [2021-11-06 17:50:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21265 states, 21194 states have (on average 1.4518259884873077) internal successors, (30770), 21224 states have internal predecessors, (30770), 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) [2021-11-06 17:50:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21265 states to 21265 states and 30826 transitions. [2021-11-06 17:50:20,617 INFO L78 Accepts]: Start accepts. Automaton has 21265 states and 30826 transitions. Word has length 328 [2021-11-06 17:50:20,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:50:20,617 INFO L470 AbstractCegarLoop]: Abstraction has 21265 states and 30826 transitions. [2021-11-06 17:50:20,618 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) [2021-11-06 17:50:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 21265 states and 30826 transitions. [2021-11-06 17:50:20,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2021-11-06 17:50:20,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:50:20,623 INFO L513 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] [2021-11-06 17:50:20,623 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-06 17:50:20,624 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)] === [2021-11-06 17:50:20,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:50:20,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1952172415, now seen corresponding path program 1 times [2021-11-06 17:50:20,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:50:20,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179129732] [2021-11-06 17:50:20,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:20,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:50:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:50:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:50:21,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:50:21,479 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179129732] [2021-11-06 17:50:21,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179129732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:50:21,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:50:21,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:50:21,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035892797] [2021-11-06 17:50:21,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:50:21,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:50:21,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:50:21,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:50:21,481 INFO L87 Difference]: Start difference. First operand 21265 states and 30826 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) [2021-11-06 17:50:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:50:22,995 INFO L93 Difference]: Finished difference Result 45267 states and 65793 transitions. [2021-11-06 17:50:22,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:50:22,997 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 [2021-11-06 17:50:22,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:50:23,080 INFO L225 Difference]: With dead ends: 45267 [2021-11-06 17:50:23,082 INFO L226 Difference]: Without dead ends: 24297 [2021-11-06 17:50:23,146 INFO L786 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 [2021-11-06 17:50:23,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24297 states. [2021-11-06 17:50:23,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24297 to 24277. [2021-11-06 17:50:23,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24277 states, 24206 states have (on average 1.454598033545402) internal successors, (35210), 24236 states have internal predecessors, (35210), 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) [2021-11-06 17:50:23,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24277 states to 24277 states and 35266 transitions. [2021-11-06 17:50:23,897 INFO L78 Accepts]: Start accepts. Automaton has 24277 states and 35266 transitions. Word has length 331 [2021-11-06 17:50:23,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:50:23,898 INFO L470 AbstractCegarLoop]: Abstraction has 24277 states and 35266 transitions. [2021-11-06 17:50:23,899 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) [2021-11-06 17:50:23,899 INFO L276 IsEmpty]: Start isEmpty. Operand 24277 states and 35266 transitions. [2021-11-06 17:50:23,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-11-06 17:50:23,904 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:50:23,905 INFO L513 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] [2021-11-06 17:50:23,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-06 17:50:23,905 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)] === [2021-11-06 17:50:23,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:50:23,906 INFO L85 PathProgramCache]: Analyzing trace with hash 106410891, now seen corresponding path program 1 times [2021-11-06 17:50:23,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:50:23,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241366066] [2021-11-06 17:50:23,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:23,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:50:24,493 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 17:50:24,493 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547129889] [2021-11-06 17:50:24,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:24,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:50:24,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:50:24,496 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 17:50:24,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-06 17:50:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:50:27,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 12987 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 17:50:27,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:50:31,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:50:31,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:50:31,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241366066] [2021-11-06 17:50:31,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 17:50:31,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547129889] [2021-11-06 17:50:31,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547129889] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:50:31,550 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:50:31,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:50:31,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355400345] [2021-11-06 17:50:31,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:50:31,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:50:31,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:50:31,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:50:31,552 INFO L87 Difference]: Start difference. First operand 24277 states and 35266 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 2 states have internal predecessors, (343), 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) [2021-11-06 17:50:32,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:50:32,366 INFO L93 Difference]: Finished difference Result 72233 states and 105208 transitions. [2021-11-06 17:50:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:50:32,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 2 states have internal predecessors, (343), 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 343 [2021-11-06 17:50:32,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:50:32,698 INFO L225 Difference]: With dead ends: 72233 [2021-11-06 17:50:32,698 INFO L226 Difference]: Without dead ends: 48251 [2021-11-06 17:50:32,748 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:50:32,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48251 states. [2021-11-06 17:50:33,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48251 to 48189. [2021-11-06 17:50:33,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48189 states, 48078 states have (on average 1.4566745704896211) internal successors, (70034), 48108 states have internal predecessors, (70034), 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) [2021-11-06 17:50:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48189 states to 48189 states and 70174 transitions. [2021-11-06 17:50:33,955 INFO L78 Accepts]: Start accepts. Automaton has 48189 states and 70174 transitions. Word has length 343 [2021-11-06 17:50:33,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:50:33,956 INFO L470 AbstractCegarLoop]: Abstraction has 48189 states and 70174 transitions. [2021-11-06 17:50:33,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 2 states have internal predecessors, (343), 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) [2021-11-06 17:50:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand 48189 states and 70174 transitions. [2021-11-06 17:50:33,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2021-11-06 17:50:33,963 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:50:33,963 INFO L513 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] [2021-11-06 17:50:34,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-06 17:50:34,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:50:34,192 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)] === [2021-11-06 17:50:34,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:50:34,193 INFO L85 PathProgramCache]: Analyzing trace with hash -702935735, now seen corresponding path program 1 times [2021-11-06 17:50:34,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:50:34,193 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608977606] [2021-11-06 17:50:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:34,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:50:34,591 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 17:50:34,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912860242] [2021-11-06 17:50:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:34,593 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:50:34,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:50:34,594 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 17:50:34,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-06 17:50:38,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:50:38,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 12987 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 17:50:38,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:50:41,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:50:41,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:50:41,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608977606] [2021-11-06 17:50:41,524 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 17:50:41,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912860242] [2021-11-06 17:50:41,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912860242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:50:41,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:50:41,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:50:41,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311795847] [2021-11-06 17:50:41,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:50:41,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:50:41,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:50:41,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:50:41,526 INFO L87 Difference]: Start difference. First operand 48189 states and 70174 transitions. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 2 states have internal predecessors, (343), 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) [2021-11-06 17:50:42,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:50:42,943 INFO L93 Difference]: Finished difference Result 142265 states and 207848 transitions. [2021-11-06 17:50:42,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:50:42,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 2 states have internal predecessors, (343), 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 343 [2021-11-06 17:50:42,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:50:43,317 INFO L225 Difference]: With dead ends: 142265 [2021-11-06 17:50:43,318 INFO L226 Difference]: Without dead ends: 94371 [2021-11-06 17:50:43,452 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 342 GetRequests, 341 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:50:43,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94371 states. [2021-11-06 17:50:45,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94371 to 94325. [2021-11-06 17:50:45,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94325 states, 94134 states have (on average 1.4589627552212803) internal successors, (137338), 94164 states have internal predecessors, (137338), 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) [2021-11-06 17:50:46,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94325 states to 94325 states and 137702 transitions. [2021-11-06 17:50:46,142 INFO L78 Accepts]: Start accepts. Automaton has 94325 states and 137702 transitions. Word has length 343 [2021-11-06 17:50:46,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:50:46,143 INFO L470 AbstractCegarLoop]: Abstraction has 94325 states and 137702 transitions. [2021-11-06 17:50:46,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 2 states have internal predecessors, (343), 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) [2021-11-06 17:50:46,143 INFO L276 IsEmpty]: Start isEmpty. Operand 94325 states and 137702 transitions. [2021-11-06 17:50:46,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-06 17:50:46,149 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:50:46,149 INFO L513 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] [2021-11-06 17:50:46,203 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-06 17:50:46,362 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-06 17:50:46,362 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)] === [2021-11-06 17:50:46,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:50:46,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1934641486, now seen corresponding path program 1 times [2021-11-06 17:50:46,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:50:46,363 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965699363] [2021-11-06 17:50:46,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:46,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:50:47,034 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 17:50:47,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758164432] [2021-11-06 17:50:47,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:47,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:50:47,035 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:50:47,036 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 17:50:47,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-06 17:50:50,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:50:50,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 12986 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 17:50:50,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:50:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:50:53,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:50:53,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965699363] [2021-11-06 17:50:53,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 17:50:53,836 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758164432] [2021-11-06 17:50:53,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758164432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:50:53,837 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:50:53,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:50:53,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65500295] [2021-11-06 17:50:53,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:50:53,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:50:53,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:50:53,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:50:53,839 INFO L87 Difference]: Start difference. First operand 94325 states and 137702 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) [2021-11-06 17:50:55,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:50:55,456 INFO L93 Difference]: Finished difference Result 188355 states and 275089 transitions. [2021-11-06 17:50:55,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:50:55,457 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 [2021-11-06 17:50:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:50:55,720 INFO L225 Difference]: With dead ends: 188355 [2021-11-06 17:50:55,721 INFO L226 Difference]: Without dead ends: 94325 [2021-11-06 17:50:55,913 INFO L786 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 [2021-11-06 17:50:56,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94325 states. [2021-11-06 17:50:58,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94325 to 94325. [2021-11-06 17:50:58,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94325 states, 94134 states have (on average 1.4586228142860178) internal successors, (137306), 94164 states have internal predecessors, (137306), 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) [2021-11-06 17:50:58,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94325 states to 94325 states and 137670 transitions. [2021-11-06 17:50:58,620 INFO L78 Accepts]: Start accepts. Automaton has 94325 states and 137670 transitions. Word has length 344 [2021-11-06 17:50:58,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:50:58,621 INFO L470 AbstractCegarLoop]: Abstraction has 94325 states and 137670 transitions. [2021-11-06 17:50:58,621 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) [2021-11-06 17:50:58,622 INFO L276 IsEmpty]: Start isEmpty. Operand 94325 states and 137670 transitions. [2021-11-06 17:50:58,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2021-11-06 17:50:58,628 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:50:58,628 INFO L513 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] [2021-11-06 17:50:58,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-06 17:50:58,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:50:58,856 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)] === [2021-11-06 17:50:58,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:50:58,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1541614476, now seen corresponding path program 1 times [2021-11-06 17:50:58,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:50:58,856 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662901500] [2021-11-06 17:50:58,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:58,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:50:59,496 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 17:50:59,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1396438587] [2021-11-06 17:50:59,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:50:59,497 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:50:59,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:50:59,498 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 17:50:59,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-06 17:51:02,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:51:03,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 12984 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-06 17:51:03,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:51:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:51:06,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:51:06,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662901500] [2021-11-06 17:51:06,421 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 17:51:06,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396438587] [2021-11-06 17:51:06,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396438587] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:51:06,421 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:51:06,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:51:06,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121154642] [2021-11-06 17:51:06,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:51:06,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:51:06,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:51:06,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:51:06,423 INFO L87 Difference]: Start difference. First operand 94325 states and 137670 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) [2021-11-06 17:51:08,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:51:08,112 INFO L93 Difference]: Finished difference Result 188355 states and 275025 transitions. [2021-11-06 17:51:08,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:51:08,112 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 [2021-11-06 17:51:08,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:51:08,385 INFO L225 Difference]: With dead ends: 188355 [2021-11-06 17:51:08,385 INFO L226 Difference]: Without dead ends: 94325 [2021-11-06 17:51:08,538 INFO L786 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 [2021-11-06 17:51:08,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94325 states. [2021-11-06 17:51:10,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94325 to 94325. [2021-11-06 17:51:10,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94325 states, 94134 states have (on average 1.4579429324154929) internal successors, (137242), 94164 states have internal predecessors, (137242), 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) [2021-11-06 17:51:10,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94325 states to 94325 states and 137606 transitions. [2021-11-06 17:51:10,679 INFO L78 Accepts]: Start accepts. Automaton has 94325 states and 137606 transitions. Word has length 344 [2021-11-06 17:51:10,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:51:10,680 INFO L470 AbstractCegarLoop]: Abstraction has 94325 states and 137606 transitions. [2021-11-06 17:51:10,680 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) [2021-11-06 17:51:10,680 INFO L276 IsEmpty]: Start isEmpty. Operand 94325 states and 137606 transitions. [2021-11-06 17:51:10,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-11-06 17:51:10,683 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:51:10,684 INFO L513 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] [2021-11-06 17:51:10,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-06 17:51:10,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:51:10,885 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [scsi_debug_queuecommandErr0ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr1ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-06 17:51:10,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:51:10,885 INFO L85 PathProgramCache]: Analyzing trace with hash -2034756960, now seen corresponding path program 1 times [2021-11-06 17:51:10,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:51:10,885 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771072510] [2021-11-06 17:51:10,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:51:10,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:51:11,522 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 17:51:11,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1853259067] [2021-11-06 17:51:11,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:51:11,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:51:11,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:51:11,524 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 17:51:11,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-06 17:51:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:51:15,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 12983 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 17:51:15,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:51:15,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:51:15,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:51:15,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771072510] [2021-11-06 17:51:15,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 17:51:15,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853259067] [2021-11-06 17:51:15,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853259067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:51:15,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:51:15,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-06 17:51:15,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857174974] [2021-11-06 17:51:15,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:51:15,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:51:15,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:51:15,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:51:15,881 INFO L87 Difference]: Start difference. First operand 94325 states and 137606 transitions. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 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) [2021-11-06 17:51:18,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-06 17:51:18,336 INFO L93 Difference]: Finished difference Result 194531 states and 284207 transitions. [2021-11-06 17:51:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-06 17:51:18,337 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 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 [2021-11-06 17:51:18,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-06 17:51:18,589 INFO L225 Difference]: With dead ends: 194531 [2021-11-06 17:51:18,589 INFO L226 Difference]: Without dead ends: 100501 [2021-11-06 17:51:18,727 INFO L786 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 [2021-11-06 17:51:18,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100501 states. [2021-11-06 17:51:20,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100501 to 94485. [2021-11-06 17:51:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94485 states, 94294 states have (on average 1.4568265213057034) internal successors, (137370), 94324 states have internal predecessors, (137370), 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) [2021-11-06 17:51:21,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94485 states to 94485 states and 137734 transitions. [2021-11-06 17:51:21,068 INFO L78 Accepts]: Start accepts. Automaton has 94485 states and 137734 transitions. Word has length 345 [2021-11-06 17:51:21,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-06 17:51:21,068 INFO L470 AbstractCegarLoop]: Abstraction has 94485 states and 137734 transitions. [2021-11-06 17:51:21,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 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) [2021-11-06 17:51:21,068 INFO L276 IsEmpty]: Start isEmpty. Operand 94485 states and 137734 transitions. [2021-11-06 17:51:21,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2021-11-06 17:51:21,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-06 17:51:21,072 INFO L513 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] [2021-11-06 17:51:21,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-06 17:51:21,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:51:21,272 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [scsi_debug_queuecommandErr0ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr1ASSERT_VIOLATIONERROR_FUNCTION, scsi_debug_queuecommandErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-06 17:51:21,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-06 17:51:21,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1525283870, now seen corresponding path program 1 times [2021-11-06 17:51:21,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-06 17:51:21,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424216144] [2021-11-06 17:51:21,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:51:21,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-06 17:51:21,870 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-06 17:51:21,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1096057970] [2021-11-06 17:51:21,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-06 17:51:21,871 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-06 17:51:21,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-06 17:51:21,872 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-06 17:51:21,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-06 17:51:25,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-06 17:51:25,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 12983 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-06 17:51:25,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-06 17:51:28,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-06 17:51:28,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-06 17:51:28,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424216144] [2021-11-06 17:51:28,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-06 17:51:28,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096057970] [2021-11-06 17:51:28,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096057970] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-06 17:51:28,719 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-06 17:51:28,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-06 17:51:28,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004846641] [2021-11-06 17:51:28,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-06 17:51:28,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-06 17:51:28,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-06 17:51:28,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-06 17:51:28,720 INFO L87 Difference]: Start difference. First operand 94485 states and 137734 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)