/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 15:11:28,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 15:11:28,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 15:11:28,230 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 15:11:28,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 15:11:28,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 15:11:28,234 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 15:11:28,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 15:11:28,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 15:11:28,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 15:11:28,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 15:11:28,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 15:11:28,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 15:11:28,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 15:11:28,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 15:11:28,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 15:11:28,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 15:11:28,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 15:11:28,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 15:11:28,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 15:11:28,263 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 15:11:28,270 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 15:11:28,271 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 15:11:28,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 15:11:28,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 15:11:28,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 15:11:28,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 15:11:28,284 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 15:11:28,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 15:11:28,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 15:11:28,291 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 15:11:28,292 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 15:11:28,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 15:11:28,294 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 15:11:28,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 15:11:28,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 15:11:28,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 15:11:28,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 15:11:28,301 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 15:11:28,302 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 15:11:28,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 15:11:28,304 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 15:11:28,360 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 15:11:28,362 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 15:11:28,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 15:11:28,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 15:11:28,364 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 15:11:28,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 15:11:28,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 15:11:28,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 15:11:28,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 15:11:28,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 15:11:28,366 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 15:11:28,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 15:11:28,368 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 15:11:28,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 15:11:28,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 15:11:28,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 15:11:28,368 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 15:11:28,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:11:28,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 15:11:28,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 15:11:28,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 15:11:28,370 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 15:11:28,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 15:11:28,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 15:11:28,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 15:11:28,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 15:11:28,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 15:11:28,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 15:11:28,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 15:11:28,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 15:11:28,797 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 15:11:28,798 INFO L432 ainManager$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--fcoe--fcoe.ko-entry_point.cil.out.i [2020-12-22 15:11:28,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b1d64095/3558675f7eb84d779d6039bac376217f/FLAGb305a9258 [2020-12-22 15:11:30,066 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 15:11:30,066 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--fcoe--fcoe.ko-entry_point.cil.out.i [2020-12-22 15:11:30,149 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b1d64095/3558675f7eb84d779d6039bac376217f/FLAGb305a9258 [2020-12-22 15:11:30,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b1d64095/3558675f7eb84d779d6039bac376217f [2020-12-22 15:11:30,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 15:11:30,345 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 15:11:30,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 15:11:30,349 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 15:11:30,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 15:11:30,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:11:30" (1/1) ... [2020-12-22 15:11:30,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20cc9a52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:30, skipping insertion in model container [2020-12-22 15:11:30,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:11:30" (1/1) ... [2020-12-22 15:11:30,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 15:11:30,597 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 15:11:34,257 WARN L226 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--fcoe--fcoe.ko-entry_point.cil.out.i[416808,416821] [2020-12-22 15:11:34,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:11:34,418 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 15:11:35,115 WARN L226 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--fcoe--fcoe.ko-entry_point.cil.out.i[416808,416821] [2020-12-22 15:11:35,132 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 15:11:35,970 INFO L208 MainTranslator]: Completed translation [2020-12-22 15:11:35,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35 WrapperNode [2020-12-22 15:11:35,972 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 15:11:35,973 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 15:11:35,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 15:11:35,974 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 15:11:35,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 15:11:36,127 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 15:11:36,647 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 15:11:36,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 15:11:36,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 15:11:36,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 15:11:36,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 15:11:36,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 15:11:36,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 15:11:36,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 15:11:37,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 15:11:37,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 15:11:37,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... [2020-12-22 15:11:37,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 15:11:37,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 15:11:37,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 15:11:37,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 15:11:37,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 15:11:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_done [2020-12-22 15:11:37,812 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_done [2020-12-22 15:11:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2020-12-22 15:11:37,812 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_vport_destroy [2020-12-22 15:11:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_vport_destroy [2020-12-22 15:11:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ctlr_alloc [2020-12-22 15:11:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ctlr_alloc [2020-12-22 15:11:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 15:11:37,813 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_remove [2020-12-22 15:11:37,813 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_remove [2020-12-22 15:11:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 15:11:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_target [2020-12-22 15:11:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_target [2020-12-22 15:11:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 15:11:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_ddp_setup [2020-12-22 15:11:37,814 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_ddp_setup [2020-12-22 15:11:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 15:11:37,814 INFO L130 BoogieDeclarations]: Found specification of procedure _fcoe_create [2020-12-22 15:11:37,815 INFO L138 BoogieDeclarations]: Found implementation of procedure _fcoe_create [2020-12-22 15:11:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 15:11:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 15:11:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2020-12-22 15:11:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2020-12-22 15:11:37,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2020-12-22 15:11:37,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 15:11:37,816 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 15:11:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 15:11:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 15:11:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2020-12-22 15:11:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_create [2020-12-22 15:11:37,816 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_create [2020-12-22 15:11:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 15:11:37,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 15:11:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2020-12-22 15:11:37,817 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2020-12-22 15:11:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_cleanup [2020-12-22 15:11:37,817 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_cleanup [2020-12-22 15:11:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 15:11:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2020-12-22 15:11:37,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~X~$Pointer$~X~int~TO~int [2020-12-22 15:11:37,817 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_flush_workqueue_46 [2020-12-22 15:11:37,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_flush_workqueue_46 [2020-12-22 15:11:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2020-12-22 15:11:37,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u16~0~TO~int [2020-12-22 15:11:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_if_destroy [2020-12-22 15:11:37,818 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_if_destroy [2020-12-22 15:11:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_interface_setup [2020-12-22 15:11:37,818 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_interface_setup [2020-12-22 15:11:37,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 15:11:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure fcoe_destroy_work [2020-12-22 15:11:37,819 INFO L138 BoogieDeclarations]: Found implementation of procedure fcoe_destroy_work [2020-12-22 15:11:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2020-12-22 15:11:37,819 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2020-12-22 15:11:37,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 15:11:55,484 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 15:11:55,485 INFO L299 CfgBuilder]: Removed 3124 assume(true) statements. [2020-12-22 15:11:55,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:11:55 BoogieIcfgContainer [2020-12-22 15:11:55,491 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 15:11:55,493 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 15:11:55,493 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 15:11:55,496 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 15:11:55,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:11:30" (1/3) ... [2020-12-22 15:11:55,497 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753cda3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:11:55, skipping insertion in model container [2020-12-22 15:11:55,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:11:35" (2/3) ... [2020-12-22 15:11:55,498 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@753cda3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:11:55, skipping insertion in model container [2020-12-22 15:11:55,498 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:11:55" (3/3) ... [2020-12-22 15:11:55,500 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--fcoe--fcoe.ko-entry_point.cil.out.i [2020-12-22 15:11:55,506 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 15:11:55,526 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-12-22 15:11:55,545 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-12-22 15:11:55,585 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 15:11:55,585 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 15:11:55,585 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 15:11:55,585 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 15:11:55,585 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 15:11:55,586 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 15:11:55,586 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 15:11:55,586 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 15:11:55,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states. [2020-12-22 15:11:55,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 15:11:55,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:11:55,692 INFO L422 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] [2020-12-22 15:11:55,692 INFO L429 AbstractCegarLoop]: === Iteration 1 === [_fcoe_createErr0ASSERT_VIOLATIONERROR_FUNCTION, fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:11:55,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:11:55,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1983063024, now seen corresponding path program 1 times [2020-12-22 15:11:55,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:11:55,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2043948356] [2020-12-22 15:11:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:11:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:11:56,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:11:56,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2043948356] [2020-12-22 15:11:56,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:11:56,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 15:11:56,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338805583] [2020-12-22 15:11:56,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 15:11:56,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:11:56,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 15:11:56,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 15:11:56,890 INFO L87 Difference]: Start difference. First operand 3849 states. Second operand 2 states. [2020-12-22 15:11:57,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:11:57,137 INFO L93 Difference]: Finished difference Result 7694 states and 11593 transitions. [2020-12-22 15:11:57,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 15:11:57,139 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 157 [2020-12-22 15:11:57,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:11:57,187 INFO L225 Difference]: With dead ends: 7694 [2020-12-22 15:11:57,188 INFO L226 Difference]: Without dead ends: 3826 [2020-12-22 15:11:57,208 INFO L677 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 [2020-12-22 15:11:57,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3826 states. [2020-12-22 15:11:57,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3826 to 3826. [2020-12-22 15:11:57,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3826 states. [2020-12-22 15:11:57,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 5625 transitions. [2020-12-22 15:11:57,424 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 5625 transitions. Word has length 157 [2020-12-22 15:11:57,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:11:57,424 INFO L481 AbstractCegarLoop]: Abstraction has 3826 states and 5625 transitions. [2020-12-22 15:11:57,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 15:11:57,424 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 5625 transitions. [2020-12-22 15:11:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-12-22 15:11:57,445 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:11:57,446 INFO L422 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] [2020-12-22 15:11:57,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 15:11:57,447 INFO L429 AbstractCegarLoop]: === Iteration 2 === [_fcoe_createErr0ASSERT_VIOLATIONERROR_FUNCTION, fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:11:57,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:11:57,449 INFO L82 PathProgramCache]: Analyzing trace with hash -1351519202, now seen corresponding path program 1 times [2020-12-22 15:11:57,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:11:57,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453833626] [2020-12-22 15:11:57,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:11:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:11:58,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:11:58,032 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453833626] [2020-12-22 15:11:58,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:11:58,033 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 15:11:58,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916875464] [2020-12-22 15:11:58,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 15:11:58,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:11:58,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 15:11:58,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 15:11:58,036 INFO L87 Difference]: Start difference. First operand 3826 states and 5625 transitions. Second operand 3 states. [2020-12-22 15:11:58,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:11:58,450 INFO L93 Difference]: Finished difference Result 10574 states and 15662 transitions. [2020-12-22 15:11:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 15:11:58,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2020-12-22 15:11:58,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:11:58,504 INFO L225 Difference]: With dead ends: 10574 [2020-12-22 15:11:58,505 INFO L226 Difference]: Without dead ends: 6854 [2020-12-22 15:11:58,517 INFO L677 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 [2020-12-22 15:11:58,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6854 states. [2020-12-22 15:11:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6854 to 6814. [2020-12-22 15:11:58,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6814 states. [2020-12-22 15:11:58,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6814 states to 6814 states and 10123 transitions. [2020-12-22 15:11:58,751 INFO L78 Accepts]: Start accepts. Automaton has 6814 states and 10123 transitions. Word has length 157 [2020-12-22 15:11:58,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:11:58,753 INFO L481 AbstractCegarLoop]: Abstraction has 6814 states and 10123 transitions. [2020-12-22 15:11:58,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 15:11:58,753 INFO L276 IsEmpty]: Start isEmpty. Operand 6814 states and 10123 transitions. [2020-12-22 15:11:58,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-12-22 15:11:58,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:11:58,764 INFO L422 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] [2020-12-22 15:11:58,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 15:11:58,765 INFO L429 AbstractCegarLoop]: === Iteration 3 === [_fcoe_createErr0ASSERT_VIOLATIONERROR_FUNCTION, fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:11:58,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:11:58,766 INFO L82 PathProgramCache]: Analyzing trace with hash 472900210, now seen corresponding path program 1 times [2020-12-22 15:11:58,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:11:58,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268829182] [2020-12-22 15:11:58,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:11:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:11:59,879 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-22 15:11:59,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-12-22 15:11:59,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:12:00,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-22 15:12:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:12:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:12:00,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268829182] [2020-12-22 15:12:00,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:12:00,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 15:12:00,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899290480] [2020-12-22 15:12:00,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 15:12:00,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:12:00,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 15:12:00,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 15:12:00,206 INFO L87 Difference]: Start difference. First operand 6814 states and 10123 transitions. Second operand 6 states. [2020-12-22 15:12:02,738 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-12-22 15:12:13,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:12:13,891 INFO L93 Difference]: Finished difference Result 24733 states and 37174 transitions. [2020-12-22 15:12:13,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 15:12:13,892 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2020-12-22 15:12:13,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:12:14,029 INFO L225 Difference]: With dead ends: 24733 [2020-12-22 15:12:14,030 INFO L226 Difference]: Without dead ends: 18025 [2020-12-22 15:12:14,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:12:14,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18025 states. [2020-12-22 15:12:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18025 to 17329. [2020-12-22 15:12:14,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17329 states. [2020-12-22 15:12:15,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17329 states to 17329 states and 25896 transitions. [2020-12-22 15:12:15,069 INFO L78 Accepts]: Start accepts. Automaton has 17329 states and 25896 transitions. Word has length 175 [2020-12-22 15:12:15,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:12:15,071 INFO L481 AbstractCegarLoop]: Abstraction has 17329 states and 25896 transitions. [2020-12-22 15:12:15,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 15:12:15,071 INFO L276 IsEmpty]: Start isEmpty. Operand 17329 states and 25896 transitions. [2020-12-22 15:12:15,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-22 15:12:15,082 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:12:15,083 INFO L422 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] [2020-12-22 15:12:15,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 15:12:15,083 INFO L429 AbstractCegarLoop]: === Iteration 4 === [_fcoe_createErr0ASSERT_VIOLATIONERROR_FUNCTION, fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:12:15,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:12:15,084 INFO L82 PathProgramCache]: Analyzing trace with hash 2093620245, now seen corresponding path program 1 times [2020-12-22 15:12:15,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:12:15,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73742612] [2020-12-22 15:12:15,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:12:15,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:12:15,759 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-22 15:12:15,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-12-22 15:12:15,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:12:15,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-22 15:12:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:12:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:12:15,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73742612] [2020-12-22 15:12:15,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:12:15,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 15:12:15,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740952421] [2020-12-22 15:12:15,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 15:12:15,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:12:15,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 15:12:15,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 15:12:15,958 INFO L87 Difference]: Start difference. First operand 17329 states and 25896 transitions. Second operand 6 states. [2020-12-22 15:12:20,244 WARN L197 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-12-22 15:12:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:12:28,502 INFO L93 Difference]: Finished difference Result 68377 states and 104943 transitions. [2020-12-22 15:12:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 15:12:28,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 178 [2020-12-22 15:12:28,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:12:28,720 INFO L225 Difference]: With dead ends: 68377 [2020-12-22 15:12:28,720 INFO L226 Difference]: Without dead ends: 51154 [2020-12-22 15:12:28,853 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:12:28,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51154 states. [2020-12-22 15:12:31,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51154 to 49780. [2020-12-22 15:12:31,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49780 states. [2020-12-22 15:12:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49780 states to 49780 states and 75634 transitions. [2020-12-22 15:12:31,310 INFO L78 Accepts]: Start accepts. Automaton has 49780 states and 75634 transitions. Word has length 178 [2020-12-22 15:12:31,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:12:31,311 INFO L481 AbstractCegarLoop]: Abstraction has 49780 states and 75634 transitions. [2020-12-22 15:12:31,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 15:12:31,312 INFO L276 IsEmpty]: Start isEmpty. Operand 49780 states and 75634 transitions. [2020-12-22 15:12:31,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-12-22 15:12:31,320 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:12:31,320 INFO L422 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] [2020-12-22 15:12:31,321 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 15:12:31,321 INFO L429 AbstractCegarLoop]: === Iteration 5 === [_fcoe_createErr0ASSERT_VIOLATIONERROR_FUNCTION, fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:12:31,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:12:31,322 INFO L82 PathProgramCache]: Analyzing trace with hash 52770532, now seen corresponding path program 1 times [2020-12-22 15:12:31,322 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:12:31,322 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452299411] [2020-12-22 15:12:31,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:12:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:12:31,911 WARN L197 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-22 15:12:31,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-12-22 15:12:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:12:31,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-22 15:12:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:12:32,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:12:32,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452299411] [2020-12-22 15:12:32,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:12:32,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 15:12:32,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552755678] [2020-12-22 15:12:32,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 15:12:32,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:12:32,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 15:12:32,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 15:12:32,184 INFO L87 Difference]: Start difference. First operand 49780 states and 75634 transitions. Second operand 6 states. [2020-12-22 15:12:34,646 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-12-22 15:12:49,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:12:49,204 INFO L93 Difference]: Finished difference Result 212739 states and 343939 transitions. [2020-12-22 15:12:49,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 15:12:49,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 179 [2020-12-22 15:12:49,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:12:50,290 INFO L225 Difference]: With dead ends: 212739 [2020-12-22 15:12:50,290 INFO L226 Difference]: Without dead ends: 163065 [2020-12-22 15:12:50,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-22 15:12:51,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163065 states. [2020-12-22 15:12:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163065 to 160335. [2020-12-22 15:12:57,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160335 states. [2020-12-22 15:12:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160335 states to 160335 states and 254368 transitions. [2020-12-22 15:12:58,464 INFO L78 Accepts]: Start accepts. Automaton has 160335 states and 254368 transitions. Word has length 179 [2020-12-22 15:12:58,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:12:58,693 INFO L481 AbstractCegarLoop]: Abstraction has 160335 states and 254368 transitions. [2020-12-22 15:12:58,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 15:12:58,693 INFO L276 IsEmpty]: Start isEmpty. Operand 160335 states and 254368 transitions. [2020-12-22 15:12:58,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-12-22 15:12:58,710 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:12:58,710 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 15:12:58,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 15:12:58,711 INFO L429 AbstractCegarLoop]: === Iteration 6 === [_fcoe_createErr0ASSERT_VIOLATIONERROR_FUNCTION, fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:12:58,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:12:58,711 INFO L82 PathProgramCache]: Analyzing trace with hash 690531590, now seen corresponding path program 1 times [2020-12-22 15:12:58,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:12:58,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254988300] [2020-12-22 15:12:58,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:12:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:12:59,313 WARN L197 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-22 15:12:59,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-12-22 15:12:59,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:12:59,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-22 15:12:59,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:12:59,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:12:59,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254988300] [2020-12-22 15:12:59,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955405607] [2020-12-22 15:12:59,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 15:13:02,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:02,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 4939 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-22 15:13:02,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 15:13:02,734 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:13:02,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-22 15:13:02,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-12-22 15:13:02,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583976669] [2020-12-22 15:13:02,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 15:13:02,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:02,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 15:13:02,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-12-22 15:13:02,738 INFO L87 Difference]: Start difference. First operand 160335 states and 254368 transitions. Second operand 5 states. [2020-12-22 15:13:17,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 15:13:17,526 INFO L93 Difference]: Finished difference Result 452368 states and 730849 transitions. [2020-12-22 15:13:17,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 15:13:17,532 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-12-22 15:13:17,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 15:13:19,878 INFO L225 Difference]: With dead ends: 452368 [2020-12-22 15:13:19,879 INFO L226 Difference]: Without dead ends: 292139 [2020-12-22 15:13:21,388 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-22 15:13:21,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292139 states. [2020-12-22 15:13:32,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292139 to 292135. [2020-12-22 15:13:32,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292135 states. [2020-12-22 15:13:34,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292135 states to 292135 states and 460898 transitions. [2020-12-22 15:13:34,433 INFO L78 Accepts]: Start accepts. Automaton has 292135 states and 460898 transitions. Word has length 192 [2020-12-22 15:13:34,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 15:13:34,434 INFO L481 AbstractCegarLoop]: Abstraction has 292135 states and 460898 transitions. [2020-12-22 15:13:34,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 15:13:34,434 INFO L276 IsEmpty]: Start isEmpty. Operand 292135 states and 460898 transitions. [2020-12-22 15:13:34,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-12-22 15:13:34,461 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 15:13:34,461 INFO L422 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] [2020-12-22 15:13:34,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-22 15:13:34,675 INFO L429 AbstractCegarLoop]: === Iteration 7 === [_fcoe_createErr0ASSERT_VIOLATIONERROR_FUNCTION, fcoe_if_destroyErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 15:13:34,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 15:13:34,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1719032761, now seen corresponding path program 1 times [2020-12-22 15:13:34,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 15:13:34,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464681955] [2020-12-22 15:13:34,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 15:13:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:35,391 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-12-22 15:13:35,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-12-22 15:13:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:35,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-12-22 15:13:35,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 15:13:35,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 15:13:35,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464681955] [2020-12-22 15:13:35,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 15:13:35,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 15:13:35,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348910662] [2020-12-22 15:13:35,572 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 15:13:35,572 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 15:13:35,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 15:13:35,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-22 15:13:35,573 INFO L87 Difference]: Start difference. First operand 292135 states and 460898 transitions. Second operand 6 states. [2020-12-22 15:13:37,903 WARN L197 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 108