/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-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:50:43,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:50:43,757 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:50:43,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:50:43,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:50:43,824 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:50:43,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:50:43,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:50:43,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:50:43,847 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:50:43,848 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:50:43,850 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:50:43,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:50:43,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:50:43,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:50:43,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:50:43,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:50:43,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:50:43,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:50:43,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:50:43,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:50:43,909 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:50:43,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:50:43,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:50:43,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:50:43,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:50:43,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:50:43,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:50:43,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:50:43,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:50:43,929 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:50:43,930 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:50:43,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:50:43,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:50:43,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:50:43,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:50:43,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:50:43,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:50:43,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:50:43,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:50:43,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:50:43,941 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:50:43,969 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:50:43,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:50:43,971 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:50:43,972 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:50:43,972 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:50:43,972 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:50:43,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:50:43,973 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:50:43,973 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:50:43,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:50:43,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:50:43,974 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:50:43,974 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:50:43,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:50:43,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:50:43,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:50:43,975 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:50:43,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:50:43,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:50:43,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:50:43,976 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:50:43,976 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:50:43,976 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:50:43,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:50:43,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:50:43,977 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:50:44,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:50:44,436 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:50:44,440 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:50:44,441 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:50:44,442 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:50:44,443 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2020-12-22 11:50:44,523 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e56075c59/16748cbbea214be39c5b4fee2cc1ff58/FLAGc84bb4f0e [2020-12-22 11:50:45,683 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:50:45,684 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2020-12-22 11:50:45,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e56075c59/16748cbbea214be39c5b4fee2cc1ff58/FLAGc84bb4f0e [2020-12-22 11:50:45,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e56075c59/16748cbbea214be39c5b4fee2cc1ff58 [2020-12-22 11:50:45,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:50:45,963 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:50:45,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:50:45,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:50:45,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:50:45,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:50:45" (1/1) ... [2020-12-22 11:50:45,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2582d96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:50:45, skipping insertion in model container [2020-12-22 11:50:45,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:50:45" (1/1) ... [2020-12-22 11:50:45,987 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:50:46,119 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:50:48,387 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-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2020-12-22 11:50:48,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:50:48,501 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:50:49,079 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-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2020-12-22 11:50:49,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:50:49,402 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:50:49,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:50:49 WrapperNode [2020-12-22 11:50:49,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:50:49,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:50:49,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:50:49,409 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:50:49,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:50:49" (1/1) ... [2020-12-22 11:50:49,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:50:49" (1/1) ... [2020-12-22 11:50:49,873 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:50:49,875 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:50:49,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:50:49,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:50:49,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:50:49" (1/1) ... [2020-12-22 11:50:49,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:50:49" (1/1) ... [2020-12-22 11:50:50,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:50:49" (1/1) ... [2020-12-22 11:50:50,006 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:50:49" (1/1) ... [2020-12-22 11:50:50,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:50:49" (1/1) ... [2020-12-22 11:50:50,358 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:50:49" (1/1) ... [2020-12-22 11:50:50,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:50:49" (1/1) ... [2020-12-22 11:50:50,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:50:50,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:50:50,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:50:50,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:50:50,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:50:49" (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 11:50:50,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-12-22 11:50:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-12-22 11:50:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-12-22 11:50:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 11:50:50,572 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2020-12-22 11:50:50,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2020-12-22 11:50:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:50:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 11:50:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 11:50:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:50:50,573 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 11:50:50,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-12-22 11:50:50,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 11:50:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:50:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 11:50:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2020-12-22 11:50:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2020-12-22 11:50:50,575 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2020-12-22 11:50:50,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2020-12-22 11:50:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 11:50:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-12-22 11:50:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2020-12-22 11:50:50,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2020-12-22 11:50:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:50:50,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-12-22 11:50:50,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:50:50,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:50:51,722 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 11:50:57,182 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##623: assume !false; [2020-12-22 11:50:57,182 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##622: assume false; [2020-12-22 11:50:57,183 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 11:50:57,442 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2020-12-22 11:50:57,442 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2020-12-22 11:50:57,451 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 11:50:57,452 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 11:51:06,955 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##232: assume false; [2020-12-22 11:51:06,955 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##233: assume !false; [2020-12-22 11:51:06,956 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint L8653: ttusb_dec_start_feed_#res := 0; [2020-12-22 11:51:06,956 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##194: assume !false; [2020-12-22 11:51:06,956 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##193: assume false; [2020-12-22 11:51:06,961 WARN L807 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-22 11:51:12,050 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-12-22 11:51:12,050 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-12-22 11:51:12,512 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:51:12,512 INFO L299 CfgBuilder]: Removed 1122 assume(true) statements. [2020-12-22 11:51:12,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:51:12 BoogieIcfgContainer [2020-12-22 11:51:12,517 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:51:12,519 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:51:12,520 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:51:12,523 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:51:12,524 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:50:45" (1/3) ... [2020-12-22 11:51:12,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c3f0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:51:12, skipping insertion in model container [2020-12-22 11:51:12,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:50:49" (2/3) ... [2020-12-22 11:51:12,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71c3f0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:51:12, skipping insertion in model container [2020-12-22 11:51:12,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:51:12" (3/3) ... [2020-12-22 11:51:12,527 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2020-12-22 11:51:12,535 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:51:12,543 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-22 11:51:12,563 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-22 11:51:12,600 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:51:12,600 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:51:12,600 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:51:12,600 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:51:12,600 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:51:12,601 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:51:12,601 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:51:12,601 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:51:12,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states. [2020-12-22 11:51:12,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:51:12,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:51:12,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:51:12,654 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:51:12,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:51:12,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1121473617, now seen corresponding path program 1 times [2020-12-22 11:51:12,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:51:12,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812930980] [2020-12-22 11:51:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:51:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:51:13,648 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 11:51:13,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812930980] [2020-12-22 11:51:13,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:51:13,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:51:13,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338245220] [2020-12-22 11:51:13,656 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:51:13,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:51:13,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:51:13,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:51:13,672 INFO L87 Difference]: Start difference. First operand 1565 states. Second operand 4 states. [2020-12-22 11:51:13,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:51:13,958 INFO L93 Difference]: Finished difference Result 3156 states and 4744 transitions. [2020-12-22 11:51:13,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:51:13,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-22 11:51:13,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:51:14,000 INFO L225 Difference]: With dead ends: 3156 [2020-12-22 11:51:14,000 INFO L226 Difference]: Without dead ends: 1575 [2020-12-22 11:51:14,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:51:14,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2020-12-22 11:51:14,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1548. [2020-12-22 11:51:14,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1548 states. [2020-12-22 11:51:14,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2129 transitions. [2020-12-22 11:51:14,208 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2129 transitions. Word has length 10 [2020-12-22 11:51:14,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:51:14,208 INFO L481 AbstractCegarLoop]: Abstraction has 1548 states and 2129 transitions. [2020-12-22 11:51:14,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:51:14,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2129 transitions. [2020-12-22 11:51:14,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-22 11:51:14,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:51:14,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:51:14,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:51:14,211 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:51:14,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:51:14,215 INFO L82 PathProgramCache]: Analyzing trace with hash -1123320659, now seen corresponding path program 1 times [2020-12-22 11:51:14,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:51:14,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816253839] [2020-12-22 11:51:14,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:51:14,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:51:14,611 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 11:51:14,612 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816253839] [2020-12-22 11:51:14,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:51:14,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:51:14,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26776185] [2020-12-22 11:51:14,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:51:14,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:51:14,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:51:14,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:51:14,618 INFO L87 Difference]: Start difference. First operand 1548 states and 2129 transitions. Second operand 3 states. [2020-12-22 11:51:14,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:51:14,847 INFO L93 Difference]: Finished difference Result 4614 states and 6379 transitions. [2020-12-22 11:51:14,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:51:14,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-22 11:51:14,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:51:14,874 INFO L225 Difference]: With dead ends: 4614 [2020-12-22 11:51:14,874 INFO L226 Difference]: Without dead ends: 3076 [2020-12-22 11:51:14,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:51:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2020-12-22 11:51:14,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3064. [2020-12-22 11:51:15,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3064 states. [2020-12-22 11:51:15,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 4238 transitions. [2020-12-22 11:51:15,032 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 4238 transitions. Word has length 10 [2020-12-22 11:51:15,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:51:15,041 INFO L481 AbstractCegarLoop]: Abstraction has 3064 states and 4238 transitions. [2020-12-22 11:51:15,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:51:15,042 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 4238 transitions. [2020-12-22 11:51:15,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 11:51:15,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:51:15,043 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:51:15,043 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:51:15,043 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:51:15,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:51:15,047 INFO L82 PathProgramCache]: Analyzing trace with hash -463198233, now seen corresponding path program 1 times [2020-12-22 11:51:15,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:51:15,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909272173] [2020-12-22 11:51:15,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:51:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:51:15,339 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 11:51:15,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909272173] [2020-12-22 11:51:15,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:51:15,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:51:15,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563052706] [2020-12-22 11:51:15,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:51:15,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:51:15,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:51:15,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:51:15,343 INFO L87 Difference]: Start difference. First operand 3064 states and 4238 transitions. Second operand 3 states. [2020-12-22 11:51:15,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:51:15,713 INFO L93 Difference]: Finished difference Result 9168 states and 12759 transitions. [2020-12-22 11:51:15,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:51:15,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-22 11:51:15,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:51:15,763 INFO L225 Difference]: With dead ends: 9168 [2020-12-22 11:51:15,764 INFO L226 Difference]: Without dead ends: 6111 [2020-12-22 11:51:15,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 11:51:15,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6111 states. [2020-12-22 11:51:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6111 to 6089. [2020-12-22 11:51:16,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6089 states. [2020-12-22 11:51:16,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6089 states to 6089 states and 8473 transitions. [2020-12-22 11:51:16,046 INFO L78 Accepts]: Start accepts. Automaton has 6089 states and 8473 transitions. Word has length 11 [2020-12-22 11:51:16,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:51:16,047 INFO L481 AbstractCegarLoop]: Abstraction has 6089 states and 8473 transitions. [2020-12-22 11:51:16,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:51:16,047 INFO L276 IsEmpty]: Start isEmpty. Operand 6089 states and 8473 transitions. [2020-12-22 11:51:16,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 11:51:16,050 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:51:16,051 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] [2020-12-22 11:51:16,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:51:16,051 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:51:16,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:51:16,052 INFO L82 PathProgramCache]: Analyzing trace with hash 929756394, now seen corresponding path program 1 times [2020-12-22 11:51:16,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:51:16,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23625634] [2020-12-22 11:51:16,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:51:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:51:16,418 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 11:51:16,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23625634] [2020-12-22 11:51:16,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:51:16,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:51:16,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979157407] [2020-12-22 11:51:16,420 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-22 11:51:16,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:51:16,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-22 11:51:16,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-22 11:51:16,423 INFO L87 Difference]: Start difference. First operand 6089 states and 8473 transitions. Second operand 3 states. [2020-12-22 11:51:16,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:51:16,678 INFO L93 Difference]: Finished difference Result 12206 states and 16996 transitions. [2020-12-22 11:51:16,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-22 11:51:16,679 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-22 11:51:16,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:51:16,721 INFO L225 Difference]: With dead ends: 12206 [2020-12-22 11:51:16,721 INFO L226 Difference]: Without dead ends: 6124 [2020-12-22 11:51:16,757 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 11:51:16,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6124 states. [2020-12-22 11:51:16,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6124 to 6124. [2020-12-22 11:51:16,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6124 states. [2020-12-22 11:51:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 8519 transitions. [2020-12-22 11:51:17,017 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 8519 transitions. Word has length 44 [2020-12-22 11:51:17,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:51:17,018 INFO L481 AbstractCegarLoop]: Abstraction has 6124 states and 8519 transitions. [2020-12-22 11:51:17,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-22 11:51:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 8519 transitions. [2020-12-22 11:51:17,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 11:51:17,032 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:51:17,032 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] [2020-12-22 11:51:17,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-22 11:51:17,033 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:51:17,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:51:17,034 INFO L82 PathProgramCache]: Analyzing trace with hash -2093944530, now seen corresponding path program 1 times [2020-12-22 11:51:17,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:51:17,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055206466] [2020-12-22 11:51:17,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:51:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:51:17,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-12-22 11:51:17,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:51:17,541 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 11:51:17,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055206466] [2020-12-22 11:51:17,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:51:17,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 11:51:17,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648897243] [2020-12-22 11:51:17,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 11:51:17,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:51:17,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 11:51:17,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:51:17,544 INFO L87 Difference]: Start difference. First operand 6124 states and 8519 transitions. Second operand 8 states. [2020-12-22 11:51:35,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:51:35,346 INFO L93 Difference]: Finished difference Result 15883 states and 22251 transitions. [2020-12-22 11:51:35,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-22 11:51:35,351 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 62 [2020-12-22 11:51:35,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:51:35,420 INFO L225 Difference]: With dead ends: 15883 [2020-12-22 11:51:35,421 INFO L226 Difference]: Without dead ends: 9767 [2020-12-22 11:51:35,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-12-22 11:51:35,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2020-12-22 11:51:35,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 6267. [2020-12-22 11:51:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6267 states. [2020-12-22 11:51:35,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6267 states to 6267 states and 8714 transitions. [2020-12-22 11:51:35,850 INFO L78 Accepts]: Start accepts. Automaton has 6267 states and 8714 transitions. Word has length 62 [2020-12-22 11:51:35,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:51:35,851 INFO L481 AbstractCegarLoop]: Abstraction has 6267 states and 8714 transitions. [2020-12-22 11:51:35,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 11:51:35,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6267 states and 8714 transitions. [2020-12-22 11:51:35,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 11:51:35,852 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:51:35,854 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] [2020-12-22 11:51:35,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-22 11:51:35,855 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:51:35,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:51:35,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1303629488, now seen corresponding path program 1 times [2020-12-22 11:51:35,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:51:35,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377044841] [2020-12-22 11:51:35,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:51:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:51:36,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-12-22 11:51:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:51:36,470 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 11:51:36,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377044841] [2020-12-22 11:51:36,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:51:36,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:51:36,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167557181] [2020-12-22 11:51:36,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:51:36,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:51:36,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:51:36,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:51:36,484 INFO L87 Difference]: Start difference. First operand 6267 states and 8714 transitions. Second operand 5 states. [2020-12-22 11:52:04,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:52:04,776 INFO L93 Difference]: Finished difference Result 15560 states and 21829 transitions. [2020-12-22 11:52:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 11:52:04,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 62 [2020-12-22 11:52:04,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:52:04,830 INFO L225 Difference]: With dead ends: 15560 [2020-12-22 11:52:04,830 INFO L226 Difference]: Without dead ends: 9301 [2020-12-22 11:52:04,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:52:04,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9301 states. [2020-12-22 11:52:05,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9301 to 6493. [2020-12-22 11:52:05,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6493 states. [2020-12-22 11:52:05,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6493 states to 6493 states and 9034 transitions. [2020-12-22 11:52:05,261 INFO L78 Accepts]: Start accepts. Automaton has 6493 states and 9034 transitions. Word has length 62 [2020-12-22 11:52:05,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:52:05,261 INFO L481 AbstractCegarLoop]: Abstraction has 6493 states and 9034 transitions. [2020-12-22 11:52:05,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:52:05,262 INFO L276 IsEmpty]: Start isEmpty. Operand 6493 states and 9034 transitions. [2020-12-22 11:52:05,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-12-22 11:52:05,263 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:52:05,263 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] [2020-12-22 11:52:05,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-22 11:52:05,264 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:52:05,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:52:05,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1403699634, now seen corresponding path program 1 times [2020-12-22 11:52:05,265 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:52:05,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920406659] [2020-12-22 11:52:05,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:52:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:52:05,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-12-22 11:52:05,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:52:05,835 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 11:52:05,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920406659] [2020-12-22 11:52:05,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:52:05,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 11:52:05,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485823879] [2020-12-22 11:52:05,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 11:52:05,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:52:05,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 11:52:05,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-12-22 11:52:05,838 INFO L87 Difference]: Start difference. First operand 6493 states and 9034 transitions. Second operand 9 states. [2020-12-22 11:52:36,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:52:36,741 INFO L93 Difference]: Finished difference Result 13443 states and 18817 transitions. [2020-12-22 11:52:36,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-22 11:52:36,742 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-12-22 11:52:36,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:52:36,779 INFO L225 Difference]: With dead ends: 13443 [2020-12-22 11:52:36,779 INFO L226 Difference]: Without dead ends: 10287 [2020-12-22 11:52:36,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2020-12-22 11:52:36,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10287 states. [2020-12-22 11:52:37,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10287 to 6497. [2020-12-22 11:52:37,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6497 states. [2020-12-22 11:52:37,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6497 states to 6497 states and 9038 transitions. [2020-12-22 11:52:37,136 INFO L78 Accepts]: Start accepts. Automaton has 6497 states and 9038 transitions. Word has length 62 [2020-12-22 11:52:37,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:52:37,138 INFO L481 AbstractCegarLoop]: Abstraction has 6497 states and 9038 transitions. [2020-12-22 11:52:37,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 11:52:37,138 INFO L276 IsEmpty]: Start isEmpty. Operand 6497 states and 9038 transitions. [2020-12-22 11:52:37,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 11:52:37,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:52:37,140 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 11:52:37,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-22 11:52:37,140 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:52:37,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:52:37,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1036858085, now seen corresponding path program 1 times [2020-12-22 11:52:37,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:52:37,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827716426] [2020-12-22 11:52:37,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:52:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:52:37,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-12-22 11:52:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:52:37,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:52:37,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827716426] [2020-12-22 11:52:37,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:52:37,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:52:37,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404261736] [2020-12-22 11:52:37,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:52:37,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:52:37,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:52:37,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:52:37,541 INFO L87 Difference]: Start difference. First operand 6497 states and 9038 transitions. Second operand 6 states. [2020-12-22 11:53:14,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:53:14,512 INFO L93 Difference]: Finished difference Result 18286 states and 25955 transitions. [2020-12-22 11:53:14,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 11:53:14,518 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-22 11:53:14,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:53:14,566 INFO L225 Difference]: With dead ends: 18286 [2020-12-22 11:53:14,566 INFO L226 Difference]: Without dead ends: 11797 [2020-12-22 11:53:14,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-12-22 11:53:14,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11797 states. [2020-12-22 11:53:15,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11797 to 10942. [2020-12-22 11:53:15,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10942 states. [2020-12-22 11:53:15,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10942 states to 10942 states and 15498 transitions. [2020-12-22 11:53:15,184 INFO L78 Accepts]: Start accepts. Automaton has 10942 states and 15498 transitions. Word has length 65 [2020-12-22 11:53:15,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:53:15,186 INFO L481 AbstractCegarLoop]: Abstraction has 10942 states and 15498 transitions. [2020-12-22 11:53:15,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:53:15,187 INFO L276 IsEmpty]: Start isEmpty. Operand 10942 states and 15498 transitions. [2020-12-22 11:53:15,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 11:53:15,188 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:53:15,188 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 11:53:15,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-22 11:53:15,189 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:53:15,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:53:15,189 INFO L82 PathProgramCache]: Analyzing trace with hash -1052376803, now seen corresponding path program 1 times [2020-12-22 11:53:15,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:53:15,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341221044] [2020-12-22 11:53:15,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:53:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:53:15,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-12-22 11:53:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:53:15,579 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 11:53:15,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341221044] [2020-12-22 11:53:15,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:53:15,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:53:15,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25438240] [2020-12-22 11:53:15,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:53:15,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:53:15,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:53:15,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:53:15,584 INFO L87 Difference]: Start difference. First operand 10942 states and 15498 transitions. Second operand 6 states. [2020-12-22 11:53:51,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:53:51,640 INFO L93 Difference]: Finished difference Result 25951 states and 38214 transitions. [2020-12-22 11:53:51,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 11:53:51,641 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-22 11:53:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:53:51,730 INFO L225 Difference]: With dead ends: 25951 [2020-12-22 11:53:51,731 INFO L226 Difference]: Without dead ends: 15017 [2020-12-22 11:53:51,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-12-22 11:53:51,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15017 states. [2020-12-22 11:53:52,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15017 to 13609. [2020-12-22 11:53:52,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13609 states. [2020-12-22 11:53:52,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13609 states to 13609 states and 19941 transitions. [2020-12-22 11:53:52,863 INFO L78 Accepts]: Start accepts. Automaton has 13609 states and 19941 transitions. Word has length 65 [2020-12-22 11:53:52,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:53:52,863 INFO L481 AbstractCegarLoop]: Abstraction has 13609 states and 19941 transitions. [2020-12-22 11:53:52,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:53:52,864 INFO L276 IsEmpty]: Start isEmpty. Operand 13609 states and 19941 transitions. [2020-12-22 11:53:52,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-22 11:53:52,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:53:52,865 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-22 11:53:52,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-22 11:53:52,865 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:53:52,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:53:52,866 INFO L82 PathProgramCache]: Analyzing trace with hash -372318433, now seen corresponding path program 1 times [2020-12-22 11:53:52,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:53:52,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904001841] [2020-12-22 11:53:52,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:53:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:53:53,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-12-22 11:53:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:53:53,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-22 11:53:53,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904001841] [2020-12-22 11:53:53,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:53:53,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:53:53,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306816679] [2020-12-22 11:53:53,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:53:53,294 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:53:53,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:53:53,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:53:53,295 INFO L87 Difference]: Start difference. First operand 13609 states and 19941 transitions. Second operand 6 states. [2020-12-22 11:54:32,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:54:32,204 INFO L93 Difference]: Finished difference Result 28796 states and 42205 transitions. [2020-12-22 11:54:32,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 11:54:32,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-12-22 11:54:32,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:54:32,294 INFO L225 Difference]: With dead ends: 28796 [2020-12-22 11:54:32,294 INFO L226 Difference]: Without dead ends: 15195 [2020-12-22 11:54:32,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-22 11:54:32,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15195 states. [2020-12-22 11:54:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15195 to 13695. [2020-12-22 11:54:33,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13695 states. [2020-12-22 11:54:33,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13695 states to 13695 states and 20138 transitions. [2020-12-22 11:54:33,291 INFO L78 Accepts]: Start accepts. Automaton has 13695 states and 20138 transitions. Word has length 65 [2020-12-22 11:54:33,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:54:33,292 INFO L481 AbstractCegarLoop]: Abstraction has 13695 states and 20138 transitions. [2020-12-22 11:54:33,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:54:33,292 INFO L276 IsEmpty]: Start isEmpty. Operand 13695 states and 20138 transitions. [2020-12-22 11:54:33,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 11:54:33,293 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:54:33,294 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] [2020-12-22 11:54:33,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-22 11:54:33,294 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:54:33,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:54:33,295 INFO L82 PathProgramCache]: Analyzing trace with hash -181704258, now seen corresponding path program 1 times [2020-12-22 11:54:33,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:54:33,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937679469] [2020-12-22 11:54:33,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:54:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:54:33,603 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 11:54:33,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937679469] [2020-12-22 11:54:33,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:54:33,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:54:33,604 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307684109] [2020-12-22 11:54:33,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:54:33,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:54:33,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:54:33,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:54:33,608 INFO L87 Difference]: Start difference. First operand 13695 states and 20138 transitions. Second operand 5 states. [2020-12-22 11:54:35,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:54:35,966 INFO L93 Difference]: Finished difference Result 48859 states and 73013 transitions. [2020-12-22 11:54:35,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 11:54:35,967 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 66 [2020-12-22 11:54:35,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:54:36,139 INFO L225 Difference]: With dead ends: 48859 [2020-12-22 11:54:36,140 INFO L226 Difference]: Without dead ends: 35371 [2020-12-22 11:54:36,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 11:54:36,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35371 states. [2020-12-22 11:54:37,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35371 to 13719. [2020-12-22 11:54:37,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13719 states. [2020-12-22 11:54:37,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13719 states to 13719 states and 20162 transitions. [2020-12-22 11:54:37,725 INFO L78 Accepts]: Start accepts. Automaton has 13719 states and 20162 transitions. Word has length 66 [2020-12-22 11:54:37,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:54:37,725 INFO L481 AbstractCegarLoop]: Abstraction has 13719 states and 20162 transitions. [2020-12-22 11:54:37,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:54:37,725 INFO L276 IsEmpty]: Start isEmpty. Operand 13719 states and 20162 transitions. [2020-12-22 11:54:37,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 11:54:37,726 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:54:37,727 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] [2020-12-22 11:54:37,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-22 11:54:37,727 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:54:37,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:54:37,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1202772612, now seen corresponding path program 1 times [2020-12-22 11:54:37,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:54:37,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146329122] [2020-12-22 11:54:37,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:54:37,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:54:38,196 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 11:54:38,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146329122] [2020-12-22 11:54:38,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:54:38,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-22 11:54:38,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539567878] [2020-12-22 11:54:38,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:54:38,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:54:38,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:54:38,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:54:38,199 INFO L87 Difference]: Start difference. First operand 13719 states and 20162 transitions. Second operand 4 states. [2020-12-22 11:54:41,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:54:41,667 INFO L93 Difference]: Finished difference Result 20542 states and 30940 transitions. [2020-12-22 11:54:41,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:54:41,669 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-22 11:54:41,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:54:41,765 INFO L225 Difference]: With dead ends: 20542 [2020-12-22 11:54:41,766 INFO L226 Difference]: Without dead ends: 20529 [2020-12-22 11:54:41,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:54:41,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20529 states. [2020-12-22 11:54:42,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20529 to 20481. [2020-12-22 11:54:42,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20481 states. [2020-12-22 11:54:43,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20481 states to 20481 states and 30856 transitions. [2020-12-22 11:54:43,103 INFO L78 Accepts]: Start accepts. Automaton has 20481 states and 30856 transitions. Word has length 66 [2020-12-22 11:54:43,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:54:43,103 INFO L481 AbstractCegarLoop]: Abstraction has 20481 states and 30856 transitions. [2020-12-22 11:54:43,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:54:43,104 INFO L276 IsEmpty]: Start isEmpty. Operand 20481 states and 30856 transitions. [2020-12-22 11:54:43,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-22 11:54:43,105 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:54:43,105 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] [2020-12-22 11:54:43,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-22 11:54:43,105 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:54:43,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:54:43,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1507239484, now seen corresponding path program 1 times [2020-12-22 11:54:43,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:54:43,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440501329] [2020-12-22 11:54:43,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:54:43,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:54:43,608 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 11:54:43,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440501329] [2020-12-22 11:54:43,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:54:43,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:54:43,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350180996] [2020-12-22 11:54:43,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:54:43,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:54:43,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:54:43,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:54:43,610 INFO L87 Difference]: Start difference. First operand 20481 states and 30856 transitions. Second operand 4 states.