./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5b36d44f Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5b36d44 [2021-11-07 10:30:55,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 10:30:55,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 10:30:55,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 10:30:55,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 10:30:55,675 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 10:30:55,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 10:30:55,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 10:30:55,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 10:30:55,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 10:30:55,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 10:30:55,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 10:30:55,681 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 10:30:55,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 10:30:55,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 10:30:55,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 10:30:55,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 10:30:55,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 10:30:55,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 10:30:55,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 10:30:55,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 10:30:55,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 10:30:55,701 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 10:30:55,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 10:30:55,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 10:30:55,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 10:30:55,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 10:30:55,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 10:30:55,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 10:30:55,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 10:30:55,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 10:30:55,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 10:30:55,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 10:30:55,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 10:30:55,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 10:30:55,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 10:30:55,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 10:30:55,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 10:30:55,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 10:30:55,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 10:30:55,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 10:30:55,724 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-07 10:30:55,744 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 10:30:55,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 10:30:55,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 10:30:55,745 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 10:30:55,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 10:30:55,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 10:30:55,746 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 10:30:55,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 10:30:55,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 10:30:55,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 10:30:55,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 10:30:55,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 10:30:55,747 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 10:30:55,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 10:30:55,748 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 10:30:55,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 10:30:55,748 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 10:30:55,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 10:30:55,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 10:30:55,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:30:55,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 10:30:55,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 10:30:55,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 10:30:55,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 10:30:55,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 10:30:55,750 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 10:30:55,750 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 10:30:55,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 10:30:55,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 10:30:55,751 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec [2021-11-07 10:30:55,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 10:30:55,962 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 10:30:55,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 10:30:55,965 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 10:30:55,966 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 10:30:55,967 INFO L432 ainManager$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 [2021-11-07 10:30:56,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8714dcf09/6fc5f381b5334f60a3d6f70021425f2b/FLAGcb641956d [2021-11-07 10:30:56,615 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 10:30:56,616 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 [2021-11-07 10:30:56,657 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8714dcf09/6fc5f381b5334f60a3d6f70021425f2b/FLAGcb641956d [2021-11-07 10:30:57,009 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8714dcf09/6fc5f381b5334f60a3d6f70021425f2b [2021-11-07 10:30:57,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 10:30:57,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 10:30:57,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 10:30:57,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 10:30:57,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 10:30:57,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:30:57" (1/1) ... [2021-11-07 10:30:57,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68c5a19d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:57, skipping insertion in model container [2021-11-07 10:30:57,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:30:57" (1/1) ... [2021-11-07 10:30:57,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 10:30:57,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 10:30:58,227 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2021-11-07 10:30:58,265 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:30:58,300 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 10:30:58,539 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i[284671,284684] [2021-11-07 10:30:58,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 10:30:58,593 INFO L208 MainTranslator]: Completed translation [2021-11-07 10:30:58,594 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:58 WrapperNode [2021-11-07 10:30:58,594 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 10:30:58,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 10:30:58,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 10:30:58,596 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 10:30:58,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:58" (1/1) ... [2021-11-07 10:30:58,675 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:58" (1/1) ... [2021-11-07 10:30:58,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 10:30:58,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 10:30:58,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 10:30:58,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 10:30:58,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:58" (1/1) ... [2021-11-07 10:30:58,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:58" (1/1) ... [2021-11-07 10:30:58,926 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:58" (1/1) ... [2021-11-07 10:30:58,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:58" (1/1) ... [2021-11-07 10:30:59,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:58" (1/1) ... [2021-11-07 10:30:59,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:58" (1/1) ... [2021-11-07 10:30:59,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:58" (1/1) ... [2021-11-07 10:30:59,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 10:30:59,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 10:30:59,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 10:30:59,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 10:30:59,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:58" (1/1) ... [2021-11-07 10:30:59,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 10:30:59,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:30:59,297 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 10:30:59,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 10:30:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-07 10:30:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-07 10:30:59,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-07 10:30:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 10:30:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2021-11-07 10:30:59,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2021-11-07 10:30:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 10:30:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 10:30:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 10:30:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 10:30:59,401 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 10:30:59,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-07 10:30:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 10:30:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 10:30:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 10:30:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2021-11-07 10:30:59,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2021-11-07 10:30:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2021-11-07 10:30:59,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2021-11-07 10:30:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 10:30:59,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-07 10:30:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2021-11-07 10:30:59,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2021-11-07 10:30:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 10:30:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-07 10:30:59,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 10:30:59,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 10:31:00,019 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 10:31:02,766 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##623: assume !false; [2021-11-07 10:31:02,766 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##622: assume false; [2021-11-07 10:31:02,767 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 10:31:02,886 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2021-11-07 10:31:02,886 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2021-11-07 10:31:02,891 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 10:31:02,892 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 10:31:08,959 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##232: assume false; [2021-11-07 10:31:08,960 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##233: assume !false; [2021-11-07 10:31:08,960 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint L8653: ttusb_dec_start_feed_#res := 0; [2021-11-07 10:31:08,960 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##194: assume !false; [2021-11-07 10:31:08,960 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##193: assume false; [2021-11-07 10:31:08,962 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-07 10:31:13,185 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-11-07 10:31:13,186 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-11-07 10:31:13,407 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 10:31:13,407 INFO L299 CfgBuilder]: Removed 1122 assume(true) statements. [2021-11-07 10:31:13,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:31:13 BoogieIcfgContainer [2021-11-07 10:31:13,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 10:31:13,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 10:31:13,411 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 10:31:13,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 10:31:13,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:30:57" (1/3) ... [2021-11-07 10:31:13,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f3d225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:31:13, skipping insertion in model container [2021-11-07 10:31:13,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:30:58" (2/3) ... [2021-11-07 10:31:13,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46f3d225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:31:13, skipping insertion in model container [2021-11-07 10:31:13,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:31:13" (3/3) ... [2021-11-07 10:31:13,423 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2021-11-07 10:31:13,428 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 10:31:13,428 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-07 10:31:13,471 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 10:31:13,475 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 10:31:13,475 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-07 10:31:13,503 INFO L276 IsEmpty]: Start isEmpty. Operand has 1565 states, 1538 states have (on average 1.5097529258777633) internal successors, (2322), 1548 states have internal predecessors, (2322), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 10:31:13,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 10:31:13,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:31:13,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:31:13,507 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:31:13,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:31:13,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1121473617, now seen corresponding path program 1 times [2021-11-07 10:31:13,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:31:13,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429168591] [2021-11-07 10:31:13,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:31:13,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:31:13,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:31:14,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:31:14,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:31:14,028 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429168591] [2021-11-07 10:31:14,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429168591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:31:14,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:31:14,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:31:14,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093484551] [2021-11-07 10:31:14,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:31:14,034 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:31:14,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:31:14,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:31:14,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:31:14,063 INFO L87 Difference]: Start difference. First operand has 1565 states, 1538 states have (on average 1.5097529258777633) internal successors, (2322), 1548 states have internal predecessors, (2322), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:31:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:31:14,207 INFO L93 Difference]: Finished difference Result 3156 states and 4744 transitions. [2021-11-07 10:31:14,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:31:14,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 10:31:14,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:31:14,230 INFO L225 Difference]: With dead ends: 3156 [2021-11-07 10:31:14,230 INFO L226 Difference]: Without dead ends: 1575 [2021-11-07 10:31:14,243 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.46ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:31:14,246 INFO L933 BasicCegarLoop]: 2164 mSDtfsCounter, 87 mSDsluCounter, 4283 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 6447 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.27ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.03ms IncrementalHoareTripleChecker+Time [2021-11-07 10:31:14,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 6447 Invalid, 13 Unknown, 0 Unchecked, 16.27ms Time], IncrementalHoareTripleChecker [5 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 17.03ms Time] [2021-11-07 10:31:14,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2021-11-07 10:31:14,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1548. [2021-11-07 10:31:14,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1548 states, 1522 states have (on average 1.3830486202365309) internal successors, (2105), 1531 states have internal predecessors, (2105), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2021-11-07 10:31:14,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2129 transitions. [2021-11-07 10:31:14,346 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2129 transitions. Word has length 10 [2021-11-07 10:31:14,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:31:14,347 INFO L470 AbstractCegarLoop]: Abstraction has 1548 states and 2129 transitions. [2021-11-07 10:31:14,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:31:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2129 transitions. [2021-11-07 10:31:14,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-07 10:31:14,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:31:14,348 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:31:14,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 10:31:14,349 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:31:14,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:31:14,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1123320659, now seen corresponding path program 1 times [2021-11-07 10:31:14,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:31:14,351 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364261204] [2021-11-07 10:31:14,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:31:14,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:31:14,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:31:14,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:31:14,557 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:31:14,557 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364261204] [2021-11-07 10:31:14,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364261204] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:31:14,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:31:14,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 10:31:14,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293877622] [2021-11-07 10:31:14,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:31:14,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:31:14,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:31:14,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:31:14,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:31:14,564 INFO L87 Difference]: Start difference. First operand 1548 states and 2129 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:31:14,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:31:14,685 INFO L93 Difference]: Finished difference Result 4614 states and 6379 transitions. [2021-11-07 10:31:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:31:14,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-07 10:31:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:31:14,700 INFO L225 Difference]: With dead ends: 4614 [2021-11-07 10:31:14,700 INFO L226 Difference]: Without dead ends: 3076 [2021-11-07 10:31:14,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.53ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:31:14,711 INFO L933 BasicCegarLoop]: 2147 mSDtfsCounter, 2105 mSDsluCounter, 2108 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2105 SdHoareTripleChecker+Valid, 4255 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.34ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.18ms IncrementalHoareTripleChecker+Time [2021-11-07 10:31:14,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2105 Valid, 4255 Invalid, 32 Unknown, 0 Unchecked, 8.34ms Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 34.18ms Time] [2021-11-07 10:31:14,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3076 states. [2021-11-07 10:31:14,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3076 to 3064. [2021-11-07 10:31:14,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3064 states, 3020 states have (on average 1.3834437086092715) internal successors, (4178), 3031 states have internal predecessors, (4178), 24 states have call successors, (24), 12 states have call predecessors, (24), 12 states have return successors, (36), 24 states have call predecessors, (36), 24 states have call successors, (36) [2021-11-07 10:31:14,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 4238 transitions. [2021-11-07 10:31:14,786 INFO L78 Accepts]: Start accepts. Automaton has 3064 states and 4238 transitions. Word has length 10 [2021-11-07 10:31:14,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:31:14,787 INFO L470 AbstractCegarLoop]: Abstraction has 3064 states and 4238 transitions. [2021-11-07 10:31:14,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:31:14,788 INFO L276 IsEmpty]: Start isEmpty. Operand 3064 states and 4238 transitions. [2021-11-07 10:31:14,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-07 10:31:14,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:31:14,788 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:31:14,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 10:31:14,789 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:31:14,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:31:14,789 INFO L85 PathProgramCache]: Analyzing trace with hash -463198233, now seen corresponding path program 1 times [2021-11-07 10:31:14,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:31:14,789 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745048087] [2021-11-07 10:31:14,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:31:14,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:31:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:31:15,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:31:15,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:31:15,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745048087] [2021-11-07 10:31:15,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745048087] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:31:15,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:31:15,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 10:31:15,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030214066] [2021-11-07 10:31:15,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:31:15,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:31:15,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:31:15,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:31:15,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:31:15,046 INFO L87 Difference]: Start difference. First operand 3064 states and 4238 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:31:15,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:31:15,181 INFO L93 Difference]: Finished difference Result 9168 states and 12759 transitions. [2021-11-07 10:31:15,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:31:15,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-07 10:31:15,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:31:15,206 INFO L225 Difference]: With dead ends: 9168 [2021-11-07 10:31:15,206 INFO L226 Difference]: Without dead ends: 6111 [2021-11-07 10:31:15,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:31:15,222 INFO L933 BasicCegarLoop]: 2137 mSDtfsCounter, 2113 mSDsluCounter, 2124 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2113 SdHoareTripleChecker+Valid, 4261 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.75ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.74ms IncrementalHoareTripleChecker+Time [2021-11-07 10:31:15,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2113 Valid, 4261 Invalid, 8 Unknown, 0 Unchecked, 6.75ms Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 8.74ms Time] [2021-11-07 10:31:15,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6111 states. [2021-11-07 10:31:15,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6111 to 6089. [2021-11-07 10:31:15,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6089 states, 6009 states have (on average 1.384090530870361) internal successors, (8317), 6024 states have internal predecessors, (8317), 48 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (108), 48 states have call predecessors, (108), 48 states have call successors, (108) [2021-11-07 10:31:15,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6089 states to 6089 states and 8473 transitions. [2021-11-07 10:31:15,355 INFO L78 Accepts]: Start accepts. Automaton has 6089 states and 8473 transitions. Word has length 11 [2021-11-07 10:31:15,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:31:15,355 INFO L470 AbstractCegarLoop]: Abstraction has 6089 states and 8473 transitions. [2021-11-07 10:31:15,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:31:15,355 INFO L276 IsEmpty]: Start isEmpty. Operand 6089 states and 8473 transitions. [2021-11-07 10:31:15,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-07 10:31:15,357 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:31:15,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:31:15,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 10:31:15,358 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:31:15,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:31:15,358 INFO L85 PathProgramCache]: Analyzing trace with hash 929756394, now seen corresponding path program 1 times [2021-11-07 10:31:15,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:31:15,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778099663] [2021-11-07 10:31:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:31:15,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:31:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:31:15,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:31:15,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:31:15,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778099663] [2021-11-07 10:31:15,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778099663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:31:15,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:31:15,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:31:15,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035527651] [2021-11-07 10:31:15,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:31:15,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:31:15,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:31:15,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:31:15,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:31:15,538 INFO L87 Difference]: Start difference. First operand 6089 states and 8473 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:31:15,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:31:15,661 INFO L93 Difference]: Finished difference Result 12206 states and 16996 transitions. [2021-11-07 10:31:15,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:31:15,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-07 10:31:15,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:31:15,685 INFO L225 Difference]: With dead ends: 12206 [2021-11-07 10:31:15,685 INFO L226 Difference]: Without dead ends: 6124 [2021-11-07 10:31:15,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.67ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:31:15,713 INFO L933 BasicCegarLoop]: 2123 mSDtfsCounter, 13 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4230 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.99ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.03ms IncrementalHoareTripleChecker+Time [2021-11-07 10:31:15,714 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 4230 Invalid, 15 Unknown, 0 Unchecked, 3.99ms Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 14.03ms Time] [2021-11-07 10:31:15,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6124 states. [2021-11-07 10:31:15,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6124 to 6124. [2021-11-07 10:31:15,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6124 states, 6044 states have (on average 1.3836863004632693) internal successors, (8363), 6059 states have internal predecessors, (8363), 48 states have call successors, (48), 24 states have call predecessors, (48), 24 states have return successors, (108), 48 states have call predecessors, (108), 48 states have call successors, (108) [2021-11-07 10:31:15,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 8519 transitions. [2021-11-07 10:31:15,846 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 8519 transitions. Word has length 44 [2021-11-07 10:31:15,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:31:15,846 INFO L470 AbstractCegarLoop]: Abstraction has 6124 states and 8519 transitions. [2021-11-07 10:31:15,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:31:15,847 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 8519 transitions. [2021-11-07 10:31:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 10:31:15,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:31:15,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:31:15,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 10:31:15,854 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:31:15,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:31:15,855 INFO L85 PathProgramCache]: Analyzing trace with hash -2093944530, now seen corresponding path program 1 times [2021-11-07 10:31:15,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:31:15,855 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350822796] [2021-11-07 10:31:15,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:31:15,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:31:15,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:31:16,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-07 10:31:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:31:16,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:31:16,218 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:31:16,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350822796] [2021-11-07 10:31:16,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350822796] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:31:16,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:31:16,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-07 10:31:16,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814004694] [2021-11-07 10:31:16,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:31:16,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 10:31:16,219 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:31:16,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 10:31:16,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 10:31:16,219 INFO L87 Difference]: Start difference. First operand 6124 states and 8519 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:31:18,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:31:22,580 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:31:27,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:31:27,169 INFO L93 Difference]: Finished difference Result 15883 states and 22251 transitions. [2021-11-07 10:31:27,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-07 10:31:27,169 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-07 10:31:27,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:31:27,207 INFO L225 Difference]: With dead ends: 15883 [2021-11-07 10:31:27,208 INFO L226 Difference]: Without dead ends: 9767 [2021-11-07 10:31:27,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 215.26ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-11-07 10:31:27,245 INFO L933 BasicCegarLoop]: 2194 mSDtfsCounter, 2892 mSDsluCounter, 12365 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 66 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9984.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2894 SdHoareTripleChecker+Valid, 14559 SdHoareTripleChecker+Invalid, 1528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 31.27ms SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10476.62ms IncrementalHoareTripleChecker+Time [2021-11-07 10:31:27,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2894 Valid, 14559 Invalid, 1528 Unknown, 0 Unchecked, 31.27ms Time], IncrementalHoareTripleChecker [66 Valid, 1460 Invalid, 2 Unknown, 0 Unchecked, 10476.62ms Time] [2021-11-07 10:31:27,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9767 states. [2021-11-07 10:31:27,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9767 to 6267. [2021-11-07 10:31:27,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6267 states, 6163 states have (on average 1.3791984423170534) internal successors, (8500), 6193 states have internal predecessors, (8500), 54 states have call successors, (54), 24 states have call predecessors, (54), 42 states have return successors, (160), 57 states have call predecessors, (160), 54 states have call successors, (160) [2021-11-07 10:31:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6267 states to 6267 states and 8714 transitions. [2021-11-07 10:31:27,504 INFO L78 Accepts]: Start accepts. Automaton has 6267 states and 8714 transitions. Word has length 62 [2021-11-07 10:31:27,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:31:27,504 INFO L470 AbstractCegarLoop]: Abstraction has 6267 states and 8714 transitions. [2021-11-07 10:31:27,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:31:27,504 INFO L276 IsEmpty]: Start isEmpty. Operand 6267 states and 8714 transitions. [2021-11-07 10:31:27,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 10:31:27,505 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:31:27,505 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:31:27,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 10:31:27,506 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:31:27,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:31:27,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1303629488, now seen corresponding path program 1 times [2021-11-07 10:31:27,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:31:27,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42864452] [2021-11-07 10:31:27,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:31:27,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:31:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:31:27,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-07 10:31:27,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:31:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:31:27,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:31:27,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42864452] [2021-11-07 10:31:27,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42864452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:31:27,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:31:27,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:31:27,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275019994] [2021-11-07 10:31:27,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:31:27,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:31:27,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:31:27,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:31:27,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:31:27,726 INFO L87 Difference]: Start difference. First operand 6267 states and 8714 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:31:29,762 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:31:35,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:31:43,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:31:43,593 INFO L93 Difference]: Finished difference Result 15560 states and 21829 transitions. [2021-11-07 10:31:43,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 10:31:43,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-07 10:31:43,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:31:43,634 INFO L225 Difference]: With dead ends: 15560 [2021-11-07 10:31:43,635 INFO L226 Difference]: Without dead ends: 9301 [2021-11-07 10:31:43,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 140.21ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:31:43,668 INFO L933 BasicCegarLoop]: 2994 mSDtfsCounter, 1512 mSDsluCounter, 6325 mSDsCounter, 0 mSdLazyCounter, 2040 mSolverCounterSat, 51 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14745.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 9319 SdHoareTripleChecker+Invalid, 2093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 22.31ms SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2040 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15429.03ms IncrementalHoareTripleChecker+Time [2021-11-07 10:31:43,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1515 Valid, 9319 Invalid, 2093 Unknown, 0 Unchecked, 22.31ms Time], IncrementalHoareTripleChecker [51 Valid, 2040 Invalid, 2 Unknown, 0 Unchecked, 15429.03ms Time] [2021-11-07 10:31:43,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9301 states. [2021-11-07 10:31:43,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9301 to 6493. [2021-11-07 10:31:43,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6493 states, 6371 states have (on average 1.37450949615445) internal successors, (8757), 6406 states have internal predecessors, (8757), 63 states have call successors, (63), 29 states have call predecessors, (63), 51 states have return successors, (214), 67 states have call predecessors, (214), 63 states have call successors, (214) [2021-11-07 10:31:43,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6493 states to 6493 states and 9034 transitions. [2021-11-07 10:31:43,912 INFO L78 Accepts]: Start accepts. Automaton has 6493 states and 9034 transitions. Word has length 62 [2021-11-07 10:31:43,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:31:43,913 INFO L470 AbstractCegarLoop]: Abstraction has 6493 states and 9034 transitions. [2021-11-07 10:31:43,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:31:43,914 INFO L276 IsEmpty]: Start isEmpty. Operand 6493 states and 9034 transitions. [2021-11-07 10:31:43,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-07 10:31:43,916 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:31:43,916 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:31:43,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 10:31:43,916 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:31:43,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:31:43,917 INFO L85 PathProgramCache]: Analyzing trace with hash 1403699634, now seen corresponding path program 1 times [2021-11-07 10:31:43,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:31:43,917 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024576473] [2021-11-07 10:31:43,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:31:43,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:31:43,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:31:44,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-07 10:31:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:31:44,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:31:44,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:31:44,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024576473] [2021-11-07 10:31:44,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024576473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:31:44,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:31:44,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 10:31:44,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130197198] [2021-11-07 10:31:44,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:31:44,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-07 10:31:44,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:31:44,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-07 10:31:44,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:31:44,165 INFO L87 Difference]: Start difference. First operand 6493 states and 9034 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:31:46,199 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:31:52,729 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:32:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:02,107 INFO L93 Difference]: Finished difference Result 13443 states and 18817 transitions. [2021-11-07 10:32:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-07 10:32:02,108 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2021-11-07 10:32:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:02,136 INFO L225 Difference]: With dead ends: 13443 [2021-11-07 10:32:02,136 INFO L226 Difference]: Without dead ends: 10287 [2021-11-07 10:32:02,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 262.08ms TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-11-07 10:32:02,152 INFO L933 BasicCegarLoop]: 3036 mSDtfsCounter, 4834 mSDsluCounter, 14820 mSDsCounter, 0 mSdLazyCounter, 2761 mSolverCounterSat, 128 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16587.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4837 SdHoareTripleChecker+Valid, 17856 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.57ms SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 2761 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17354.80ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:02,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4837 Valid, 17856 Invalid, 2891 Unknown, 0 Unchecked, 43.57ms Time], IncrementalHoareTripleChecker [128 Valid, 2761 Invalid, 2 Unknown, 0 Unchecked, 17354.80ms Time] [2021-11-07 10:32:02,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10287 states. [2021-11-07 10:32:02,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10287 to 6497. [2021-11-07 10:32:02,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6497 states, 6375 states have (on average 1.3742745098039215) internal successors, (8761), 6410 states have internal predecessors, (8761), 63 states have call successors, (63), 29 states have call predecessors, (63), 51 states have return successors, (214), 67 states have call predecessors, (214), 63 states have call successors, (214) [2021-11-07 10:32:02,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6497 states to 6497 states and 9038 transitions. [2021-11-07 10:32:02,335 INFO L78 Accepts]: Start accepts. Automaton has 6497 states and 9038 transitions. Word has length 62 [2021-11-07 10:32:02,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:02,336 INFO L470 AbstractCegarLoop]: Abstraction has 6497 states and 9038 transitions. [2021-11-07 10:32:02,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:32:02,337 INFO L276 IsEmpty]: Start isEmpty. Operand 6497 states and 9038 transitions. [2021-11-07 10:32:02,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 10:32:02,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:02,337 INFO L514 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] [2021-11-07 10:32:02,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 10:32:02,338 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:32:02,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:02,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1036858085, now seen corresponding path program 1 times [2021-11-07 10:32:02,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:02,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478884080] [2021-11-07 10:32:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:02,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:02,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-07 10:32:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:02,515 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:02,516 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:02,516 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478884080] [2021-11-07 10:32:02,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478884080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:02,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:02,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:32:02,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324163729] [2021-11-07 10:32:02,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:02,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:32:02,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:02,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:32:02,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:32:02,518 INFO L87 Difference]: Start difference. First operand 6497 states and 9038 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:32:04,554 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:32:06,702 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:32:08,850 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:32:13,769 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:32:16,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:32:25,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:25,568 INFO L93 Difference]: Finished difference Result 18286 states and 25955 transitions. [2021-11-07 10:32:25,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 10:32:25,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-11-07 10:32:25,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:25,610 INFO L225 Difference]: With dead ends: 18286 [2021-11-07 10:32:25,610 INFO L226 Difference]: Without dead ends: 11797 [2021-11-07 10:32:25,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 74.17ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-07 10:32:25,647 INFO L933 BasicCegarLoop]: 3322 mSDtfsCounter, 1853 mSDsluCounter, 9926 mSDsCounter, 0 mSdLazyCounter, 2833 mSolverCounterSat, 67 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21347.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 13248 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.77ms SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 2833 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22586.23ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:25,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1861 Valid, 13248 Invalid, 2904 Unknown, 0 Unchecked, 29.77ms Time], IncrementalHoareTripleChecker [67 Valid, 2833 Invalid, 4 Unknown, 0 Unchecked, 22586.23ms Time] [2021-11-07 10:32:25,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11797 states. [2021-11-07 10:32:25,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11797 to 10942. [2021-11-07 10:32:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10942 states, 10682 states have (on average 1.3669724770642202) internal successors, (14602), 10752 states have internal predecessors, (14602), 127 states have call successors, (127), 57 states have call predecessors, (127), 125 states have return successors, (769), 158 states have call predecessors, (769), 127 states have call successors, (769) [2021-11-07 10:32:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10942 states to 10942 states and 15498 transitions. [2021-11-07 10:32:26,051 INFO L78 Accepts]: Start accepts. Automaton has 10942 states and 15498 transitions. Word has length 65 [2021-11-07 10:32:26,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:26,052 INFO L470 AbstractCegarLoop]: Abstraction has 10942 states and 15498 transitions. [2021-11-07 10:32:26,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:32:26,052 INFO L276 IsEmpty]: Start isEmpty. Operand 10942 states and 15498 transitions. [2021-11-07 10:32:26,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-07 10:32:26,053 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:26,053 INFO L514 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] [2021-11-07 10:32:26,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 10:32:26,053 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:32:26,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:26,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1052376803, now seen corresponding path program 1 times [2021-11-07 10:32:26,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:26,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488287626] [2021-11-07 10:32:26,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:26,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-07 10:32:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:26,263 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:26,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:26,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488287626] [2021-11-07 10:32:26,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488287626] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:26,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:26,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 10:32:26,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383752857] [2021-11-07 10:32:26,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:26,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:32:26,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:26,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:32:26,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:32:26,266 INFO L87 Difference]: Start difference. First operand 10942 states and 15498 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:32:28,320 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:32:30,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:32:34,749 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:32:38,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:38,454 INFO L93 Difference]: Finished difference Result 22225 states and 31358 transitions. [2021-11-07 10:32:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 10:32:38,455 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2021-11-07 10:32:38,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:38,488 INFO L225 Difference]: With dead ends: 22225 [2021-11-07 10:32:38,488 INFO L226 Difference]: Without dead ends: 11276 [2021-11-07 10:32:38,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.01ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:32:38,526 INFO L933 BasicCegarLoop]: 2095 mSDtfsCounter, 200 mSDsluCounter, 7582 mSDsCounter, 0 mSdLazyCounter, 1031 mSolverCounterSat, 17 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11123.48ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 9677 SdHoareTripleChecker+Invalid, 1051 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.77ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1031 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11741.01ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:38,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 9677 Invalid, 1051 Unknown, 0 Unchecked, 13.77ms Time], IncrementalHoareTripleChecker [17 Valid, 1031 Invalid, 3 Unknown, 0 Unchecked, 11741.01ms Time] [2021-11-07 10:32:38,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11276 states. [2021-11-07 10:32:38,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11276 to 10690. [2021-11-07 10:32:38,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10690 states, 10448 states have (on average 1.366385911179173) internal successors, (14276), 10513 states have internal predecessors, (14276), 116 states have call successors, (116), 53 states have call predecessors, (116), 118 states have return successors, (678), 147 states have call predecessors, (678), 116 states have call successors, (678) [2021-11-07 10:32:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10690 states to 10690 states and 15070 transitions. [2021-11-07 10:32:38,830 INFO L78 Accepts]: Start accepts. Automaton has 10690 states and 15070 transitions. Word has length 65 [2021-11-07 10:32:38,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:38,830 INFO L470 AbstractCegarLoop]: Abstraction has 10690 states and 15070 transitions. [2021-11-07 10:32:38,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:32:38,830 INFO L276 IsEmpty]: Start isEmpty. Operand 10690 states and 15070 transitions. [2021-11-07 10:32:38,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 10:32:38,831 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:38,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:32:38,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 10:32:38,831 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:32:38,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:38,832 INFO L85 PathProgramCache]: Analyzing trace with hash -181704258, now seen corresponding path program 1 times [2021-11-07 10:32:38,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:38,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294727265] [2021-11-07 10:32:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:38,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:38,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:38,990 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:38,990 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294727265] [2021-11-07 10:32:38,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294727265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:38,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:38,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:32:38,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749504200] [2021-11-07 10:32:38,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:38,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:32:38,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:38,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:32:38,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:32:38,992 INFO L87 Difference]: Start difference. First operand 10690 states and 15070 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:32:40,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:40,168 INFO L93 Difference]: Finished difference Result 43021 states and 61411 transitions. [2021-11-07 10:32:40,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-07 10:32:40,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 10:32:40,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:40,296 INFO L225 Difference]: With dead ends: 43021 [2021-11-07 10:32:40,296 INFO L226 Difference]: Without dead ends: 32358 [2021-11-07 10:32:40,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 28.53ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:32:40,375 INFO L933 BasicCegarLoop]: 5616 mSDtfsCounter, 3509 mSDsluCounter, 11874 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 138.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3515 SdHoareTripleChecker+Valid, 17490 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.05ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 167.89ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:40,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3515 Valid, 17490 Invalid, 244 Unknown, 0 Unchecked, 13.05ms Time], IncrementalHoareTripleChecker [36 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 167.89ms Time] [2021-11-07 10:32:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32358 states. [2021-11-07 10:32:40,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32358 to 10714. [2021-11-07 10:32:40,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10714 states, 10472 states have (on average 1.365546218487395) internal successors, (14300), 10537 states have internal predecessors, (14300), 116 states have call successors, (116), 53 states have call predecessors, (116), 118 states have return successors, (678), 147 states have call predecessors, (678), 116 states have call successors, (678) [2021-11-07 10:32:40,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10714 states to 10714 states and 15094 transitions. [2021-11-07 10:32:40,916 INFO L78 Accepts]: Start accepts. Automaton has 10714 states and 15094 transitions. Word has length 66 [2021-11-07 10:32:40,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:40,916 INFO L470 AbstractCegarLoop]: Abstraction has 10714 states and 15094 transitions. [2021-11-07 10:32:40,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:32:40,916 INFO L276 IsEmpty]: Start isEmpty. Operand 10714 states and 15094 transitions. [2021-11-07 10:32:40,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 10:32:40,917 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:40,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:32:40,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 10:32:40,918 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:32:40,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:40,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1202772612, now seen corresponding path program 1 times [2021-11-07 10:32:40,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:40,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985374151] [2021-11-07 10:32:40,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:40,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:41,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:41,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:41,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985374151] [2021-11-07 10:32:41,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985374151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:41,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:41,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:32:41,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637977427] [2021-11-07 10:32:41,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:41,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:32:41,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:41,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:32:41,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:41,152 INFO L87 Difference]: Start difference. First operand 10714 states and 15094 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:32:43,193 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:32:43,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:43,936 INFO L93 Difference]: Finished difference Result 16139 states and 22972 transitions. [2021-11-07 10:32:43,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:32:43,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 10:32:43,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:43,987 INFO L225 Difference]: With dead ends: 16139 [2021-11-07 10:32:43,988 INFO L226 Difference]: Without dead ends: 16126 [2021-11-07 10:32:43,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.20ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:43,999 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 4134 mSDsluCounter, 4166 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2159.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4134 SdHoareTripleChecker+Valid, 8363 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.60ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2320.68ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:43,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4134 Valid, 8363 Invalid, 130 Unknown, 0 Unchecked, 8.60ms Time], IncrementalHoareTripleChecker [14 Valid, 115 Invalid, 1 Unknown, 0 Unchecked, 2320.68ms Time] [2021-11-07 10:32:44,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16126 states. [2021-11-07 10:32:44,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16126 to 16074. [2021-11-07 10:32:44,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16074 states, 15712 states have (on average 1.3648803462321792) internal successors, (21445), 15809 states have internal predecessors, (21445), 174 states have call successors, (174), 79 states have call predecessors, (174), 180 states have return successors, (1277), 221 states have call predecessors, (1277), 174 states have call successors, (1277) [2021-11-07 10:32:44,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16074 states to 16074 states and 22896 transitions. [2021-11-07 10:32:44,620 INFO L78 Accepts]: Start accepts. Automaton has 16074 states and 22896 transitions. Word has length 66 [2021-11-07 10:32:44,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:44,621 INFO L470 AbstractCegarLoop]: Abstraction has 16074 states and 22896 transitions. [2021-11-07 10:32:44,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:32:44,621 INFO L276 IsEmpty]: Start isEmpty. Operand 16074 states and 22896 transitions. [2021-11-07 10:32:44,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-07 10:32:44,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:44,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:32:44,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 10:32:44,625 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:32:44,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:44,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1507239484, now seen corresponding path program 1 times [2021-11-07 10:32:44,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:44,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977656208] [2021-11-07 10:32:44,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:44,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:44,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:44,780 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977656208] [2021-11-07 10:32:44,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977656208] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:44,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:44,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:32:44,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799907171] [2021-11-07 10:32:44,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:44,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:32:44,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:44,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:32:44,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:32:44,781 INFO L87 Difference]: Start difference. First operand 16074 states and 22896 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:32:45,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:45,594 INFO L93 Difference]: Finished difference Result 34963 states and 50587 transitions. [2021-11-07 10:32:45,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:32:45,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-11-07 10:32:45,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:45,653 INFO L225 Difference]: With dead ends: 34963 [2021-11-07 10:32:45,654 INFO L226 Difference]: Without dead ends: 18916 [2021-11-07 10:32:45,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:32:45,765 INFO L933 BasicCegarLoop]: 2138 mSDtfsCounter, 775 mSDsluCounter, 4241 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 6379 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.89ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.41ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:45,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 6379 Invalid, 17 Unknown, 0 Unchecked, 4.89ms Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 14.41ms Time] [2021-11-07 10:32:45,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18916 states. [2021-11-07 10:32:46,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18916 to 13381. [2021-11-07 10:32:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13381 states, 13079 states have (on average 1.363712822081199) internal successors, (17836), 13161 states have internal predecessors, (17836), 145 states have call successors, (145), 66 states have call predecessors, (145), 149 states have return successors, (1005), 183 states have call predecessors, (1005), 145 states have call successors, (1005) [2021-11-07 10:32:46,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13381 states to 13381 states and 18986 transitions. [2021-11-07 10:32:46,364 INFO L78 Accepts]: Start accepts. Automaton has 13381 states and 18986 transitions. Word has length 66 [2021-11-07 10:32:46,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:46,364 INFO L470 AbstractCegarLoop]: Abstraction has 13381 states and 18986 transitions. [2021-11-07 10:32:46,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:32:46,364 INFO L276 IsEmpty]: Start isEmpty. Operand 13381 states and 18986 transitions. [2021-11-07 10:32:46,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 10:32:46,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:46,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:32:46,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 10:32:46,366 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:32:46,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:46,366 INFO L85 PathProgramCache]: Analyzing trace with hash 94855349, now seen corresponding path program 1 times [2021-11-07 10:32:46,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:46,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084810490] [2021-11-07 10:32:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:46,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:46,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:46,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-07 10:32:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:46,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:46,593 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:46,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084810490] [2021-11-07 10:32:46,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084810490] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:32:46,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:32:46,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 10:32:46,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057495747] [2021-11-07 10:32:46,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:32:46,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:32:46,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:32:46,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:32:46,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:32:46,594 INFO L87 Difference]: Start difference. First operand 13381 states and 18986 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:32:48,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:32:52,961 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:32:54,736 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:32:57,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:32:57,774 INFO L93 Difference]: Finished difference Result 27373 states and 38716 transitions. [2021-11-07 10:32:57,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 10:32:57,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2021-11-07 10:32:57,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:32:57,847 INFO L225 Difference]: With dead ends: 27373 [2021-11-07 10:32:57,848 INFO L226 Difference]: Without dead ends: 27364 [2021-11-07 10:32:57,864 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 47.46ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-07 10:32:57,865 INFO L933 BasicCegarLoop]: 2149 mSDtfsCounter, 2340 mSDsluCounter, 7698 mSDsCounter, 0 mSdLazyCounter, 1074 mSolverCounterSat, 48 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9750.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2350 SdHoareTripleChecker+Valid, 9847 SdHoareTripleChecker+Invalid, 1124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.55ms SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1074 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10339.78ms IncrementalHoareTripleChecker+Time [2021-11-07 10:32:57,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2350 Valid, 9847 Invalid, 1124 Unknown, 0 Unchecked, 18.55ms Time], IncrementalHoareTripleChecker [48 Valid, 1074 Invalid, 2 Unknown, 0 Unchecked, 10339.78ms Time] [2021-11-07 10:32:57,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27364 states. [2021-11-07 10:32:58,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27364 to 25949. [2021-11-07 10:32:58,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25949 states, 25366 states have (on average 1.363163289442561) internal successors, (34578), 25525 states have internal predecessors, (34578), 275 states have call successors, (275), 131 states have call predecessors, (275), 300 states have return successors, (2018), 352 states have call predecessors, (2018), 275 states have call successors, (2018) [2021-11-07 10:32:58,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25949 states to 25949 states and 36871 transitions. [2021-11-07 10:32:58,830 INFO L78 Accepts]: Start accepts. Automaton has 25949 states and 36871 transitions. Word has length 74 [2021-11-07 10:32:58,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:32:58,831 INFO L470 AbstractCegarLoop]: Abstraction has 25949 states and 36871 transitions. [2021-11-07 10:32:58,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 4 states have internal predecessors, (72), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:32:58,831 INFO L276 IsEmpty]: Start isEmpty. Operand 25949 states and 36871 transitions. [2021-11-07 10:32:58,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 10:32:58,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:32:58,833 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-07 10:32:58,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 10:32:58,834 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:32:58,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:32:58,834 INFO L85 PathProgramCache]: Analyzing trace with hash -795284500, now seen corresponding path program 1 times [2021-11-07 10:32:58,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:32:58,834 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664319986] [2021-11-07 10:32:58,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:58,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:32:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-07 10:32:59,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:32:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:32:59,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:32:59,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664319986] [2021-11-07 10:32:59,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664319986] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 10:32:59,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905282231] [2021-11-07 10:32:59,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:32:59,187 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:32:59,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:32:59,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:32:59,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 10:33:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:00,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 2344 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 10:33:00,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:33:00,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:33:00,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-07 10:33:00,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905282231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:33:00,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-07 10:33:00,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-11-07 10:33:00,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608644178] [2021-11-07 10:33:00,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:33:00,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:33:00,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:33:00,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:33:00,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:33:00,224 INFO L87 Difference]: Start difference. First operand 25949 states and 36871 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:33:01,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:33:01,132 INFO L93 Difference]: Finished difference Result 51871 states and 73707 transitions. [2021-11-07 10:33:01,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:33:01,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 78 [2021-11-07 10:33:01,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:33:01,212 INFO L225 Difference]: With dead ends: 51871 [2021-11-07 10:33:01,213 INFO L226 Difference]: Without dead ends: 25949 [2021-11-07 10:33:01,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.51ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:33:01,299 INFO L933 BasicCegarLoop]: 2115 mSDtfsCounter, 24 mSDsluCounter, 4187 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 6302 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.44ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.70ms IncrementalHoareTripleChecker+Time [2021-11-07 10:33:01,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 6302 Invalid, 19 Unknown, 0 Unchecked, 3.44ms Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 16.70ms Time] [2021-11-07 10:33:01,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25949 states. [2021-11-07 10:33:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25949 to 25949. [2021-11-07 10:33:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25949 states, 25366 states have (on average 1.3628084837972088) internal successors, (34569), 25525 states have internal predecessors, (34569), 275 states have call successors, (275), 131 states have call predecessors, (275), 300 states have return successors, (2018), 352 states have call predecessors, (2018), 275 states have call successors, (2018) [2021-11-07 10:33:02,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25949 states to 25949 states and 36862 transitions. [2021-11-07 10:33:02,310 INFO L78 Accepts]: Start accepts. Automaton has 25949 states and 36862 transitions. Word has length 78 [2021-11-07 10:33:02,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:33:02,310 INFO L470 AbstractCegarLoop]: Abstraction has 25949 states and 36862 transitions. [2021-11-07 10:33:02,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:33:02,310 INFO L276 IsEmpty]: Start isEmpty. Operand 25949 states and 36862 transitions. [2021-11-07 10:33:02,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 10:33:02,313 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:33:02,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:33:02,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 10:33:02,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-07 10:33:02,527 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:33:02,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:33:02,528 INFO L85 PathProgramCache]: Analyzing trace with hash -483282857, now seen corresponding path program 1 times [2021-11-07 10:33:02,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:33:02,528 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328308207] [2021-11-07 10:33:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:33:02,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:33:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:33:02,705 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:33:02,705 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328308207] [2021-11-07 10:33:02,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328308207] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:33:02,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:33:02,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:33:02,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098427359] [2021-11-07 10:33:02,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:33:02,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:33:02,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:33:02,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:33:02,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:33:02,708 INFO L87 Difference]: Start difference. First operand 25949 states and 36862 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:33:04,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:33:04,411 INFO L93 Difference]: Finished difference Result 63873 states and 92317 transitions. [2021-11-07 10:33:04,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:33:04,411 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-07 10:33:04,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:33:04,515 INFO L225 Difference]: With dead ends: 63873 [2021-11-07 10:33:04,515 INFO L226 Difference]: Without dead ends: 37951 [2021-11-07 10:33:04,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.13ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:33:04,644 INFO L933 BasicCegarLoop]: 2823 mSDtfsCounter, 830 mSDsluCounter, 4932 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 7755 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.98ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.67ms IncrementalHoareTripleChecker+Time [2021-11-07 10:33:04,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 7755 Invalid, 13 Unknown, 0 Unchecked, 5.98ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 13.67ms Time] [2021-11-07 10:33:04,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37951 states. [2021-11-07 10:33:05,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37951 to 26049. [2021-11-07 10:33:05,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26049 states, 25466 states have (on average 1.3629545276054347) internal successors, (34709), 25625 states have internal predecessors, (34709), 275 states have call successors, (275), 131 states have call predecessors, (275), 300 states have return successors, (2018), 352 states have call predecessors, (2018), 275 states have call successors, (2018) [2021-11-07 10:33:05,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26049 states to 26049 states and 37002 transitions. [2021-11-07 10:33:05,741 INFO L78 Accepts]: Start accepts. Automaton has 26049 states and 37002 transitions. Word has length 84 [2021-11-07 10:33:05,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:33:05,742 INFO L470 AbstractCegarLoop]: Abstraction has 26049 states and 37002 transitions. [2021-11-07 10:33:05,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:33:05,742 INFO L276 IsEmpty]: Start isEmpty. Operand 26049 states and 37002 transitions. [2021-11-07 10:33:05,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 10:33:05,744 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:33:05,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:33:05,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 10:33:05,744 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:33:05,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:33:05,746 INFO L85 PathProgramCache]: Analyzing trace with hash -758042471, now seen corresponding path program 1 times [2021-11-07 10:33:05,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:33:05,746 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471132819] [2021-11-07 10:33:05,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:33:05,747 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:33:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:33:05,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:33:05,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471132819] [2021-11-07 10:33:05,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471132819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:33:05,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:33:05,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:33:05,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781010101] [2021-11-07 10:33:05,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:33:05,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:33:05,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:33:05,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:33:05,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:33:05,929 INFO L87 Difference]: Start difference. First operand 26049 states and 37002 transitions. Second operand has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:33:07,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:33:07,876 INFO L93 Difference]: Finished difference Result 62338 states and 90275 transitions. [2021-11-07 10:33:07,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 10:33:07,877 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2021-11-07 10:33:07,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:33:07,985 INFO L225 Difference]: With dead ends: 62338 [2021-11-07 10:33:07,985 INFO L226 Difference]: Without dead ends: 36316 [2021-11-07 10:33:08,121 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 29.31ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:33:08,122 INFO L933 BasicCegarLoop]: 2822 mSDtfsCounter, 1421 mSDsluCounter, 7048 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 9870 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.31ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.62ms IncrementalHoareTripleChecker+Time [2021-11-07 10:33:08,122 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1421 Valid, 9870 Invalid, 21 Unknown, 0 Unchecked, 7.31ms Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 18.62ms Time] [2021-11-07 10:33:08,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36316 states. [2021-11-07 10:33:09,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36316 to 26109. [2021-11-07 10:33:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26109 states, 25526 states have (on average 1.3621013868212803) internal successors, (34769), 25685 states have internal predecessors, (34769), 275 states have call successors, (275), 131 states have call predecessors, (275), 300 states have return successors, (2018), 352 states have call predecessors, (2018), 275 states have call successors, (2018) [2021-11-07 10:33:09,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26109 states to 26109 states and 37062 transitions. [2021-11-07 10:33:09,278 INFO L78 Accepts]: Start accepts. Automaton has 26109 states and 37062 transitions. Word has length 84 [2021-11-07 10:33:09,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:33:09,278 INFO L470 AbstractCegarLoop]: Abstraction has 26109 states and 37062 transitions. [2021-11-07 10:33:09,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.6) internal successors, (83), 5 states have internal predecessors, (83), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:33:09,279 INFO L276 IsEmpty]: Start isEmpty. Operand 26109 states and 37062 transitions. [2021-11-07 10:33:09,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 10:33:09,281 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:33:09,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:33:09,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 10:33:09,281 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:33:09,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:33:09,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1109521106, now seen corresponding path program 1 times [2021-11-07 10:33:09,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:33:09,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322514468] [2021-11-07 10:33:09,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:33:09,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:33:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:09,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:33:09,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:33:09,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322514468] [2021-11-07 10:33:09,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322514468] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:33:09,420 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:33:09,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 10:33:09,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551616731] [2021-11-07 10:33:09,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:33:09,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 10:33:09,421 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:33:09,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 10:33:09,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 10:33:09,422 INFO L87 Difference]: Start difference. First operand 26109 states and 37062 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:33:10,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:33:10,859 INFO L93 Difference]: Finished difference Result 52271 states and 75849 transitions. [2021-11-07 10:33:10,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 10:33:10,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2021-11-07 10:33:10,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:33:10,955 INFO L225 Difference]: With dead ends: 52271 [2021-11-07 10:33:10,956 INFO L226 Difference]: Without dead ends: 26189 [2021-11-07 10:33:11,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.89ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:33:11,091 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 5 mSDsluCounter, 4221 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6334 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.05ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.51ms IncrementalHoareTripleChecker+Time [2021-11-07 10:33:11,091 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 6334 Invalid, 10 Unknown, 0 Unchecked, 4.05ms Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 13.51ms Time] [2021-11-07 10:33:11,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26189 states. [2021-11-07 10:33:12,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26189 to 26149. [2021-11-07 10:33:12,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26149 states, 25566 states have (on average 1.3615348509739498) internal successors, (34809), 25725 states have internal predecessors, (34809), 275 states have call successors, (275), 131 states have call predecessors, (275), 300 states have return successors, (2018), 352 states have call predecessors, (2018), 275 states have call successors, (2018) [2021-11-07 10:33:12,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26149 states to 26149 states and 37102 transitions. [2021-11-07 10:33:12,357 INFO L78 Accepts]: Start accepts. Automaton has 26149 states and 37102 transitions. Word has length 87 [2021-11-07 10:33:12,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:33:12,357 INFO L470 AbstractCegarLoop]: Abstraction has 26149 states and 37102 transitions. [2021-11-07 10:33:12,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:33:12,358 INFO L276 IsEmpty]: Start isEmpty. Operand 26149 states and 37102 transitions. [2021-11-07 10:33:12,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 10:33:12,359 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:33:12,360 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:33:12,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 10:33:12,360 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:33:12,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:33:12,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1309309255, now seen corresponding path program 1 times [2021-11-07 10:33:12,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:33:12,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392057556] [2021-11-07 10:33:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:33:12,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:33:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:12,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-07 10:33:12,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-07 10:33:12,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:33:12,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392057556] [2021-11-07 10:33:12,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392057556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:33:12,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:33:12,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 10:33:12,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678440340] [2021-11-07 10:33:12,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:33:12,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 10:33:12,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:33:12,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 10:33:12,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 10:33:12,566 INFO L87 Difference]: Start difference. First operand 26149 states and 37102 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:33:14,609 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:33:16,744 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:33:23,016 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:33:26,004 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:33:27,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:33:29,333 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:33:36,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:33:36,274 INFO L93 Difference]: Finished difference Result 61898 states and 92082 transitions. [2021-11-07 10:33:36,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 10:33:36,274 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-11-07 10:33:36,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:33:36,540 INFO L225 Difference]: With dead ends: 61898 [2021-11-07 10:33:36,540 INFO L226 Difference]: Without dead ends: 35776 [2021-11-07 10:33:36,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 98.82ms TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-07 10:33:36,639 INFO L933 BasicCegarLoop]: 2145 mSDtfsCounter, 639 mSDsluCounter, 6850 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 44 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21020.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 8995 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.96ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22226.98ms IncrementalHoareTripleChecker+Time [2021-11-07 10:33:36,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [639 Valid, 8995 Invalid, 2157 Unknown, 0 Unchecked, 18.96ms Time], IncrementalHoareTripleChecker [44 Valid, 2110 Invalid, 3 Unknown, 0 Unchecked, 22226.98ms Time] [2021-11-07 10:33:36,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35776 states. [2021-11-07 10:33:37,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35776 to 32491. [2021-11-07 10:33:37,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32491 states, 31480 states have (on average 1.3509212198221092) internal successors, (42527), 31762 states have internal predecessors, (42527), 436 states have call successors, (436), 251 states have call predecessors, (436), 567 states have return successors, (5144), 597 states have call predecessors, (5144), 436 states have call successors, (5144) [2021-11-07 10:33:38,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32491 states to 32491 states and 48107 transitions. [2021-11-07 10:33:38,088 INFO L78 Accepts]: Start accepts. Automaton has 32491 states and 48107 transitions. Word has length 95 [2021-11-07 10:33:38,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:33:38,089 INFO L470 AbstractCegarLoop]: Abstraction has 32491 states and 48107 transitions. [2021-11-07 10:33:38,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 5 states have internal predecessors, (88), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:33:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 32491 states and 48107 transitions. [2021-11-07 10:33:38,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 10:33:38,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:33:38,091 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:33:38,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 10:33:38,092 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:33:38,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:33:38,092 INFO L85 PathProgramCache]: Analyzing trace with hash -629250885, now seen corresponding path program 1 times [2021-11-07 10:33:38,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:33:38,092 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528372224] [2021-11-07 10:33:38,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:33:38,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:33:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:38,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-07 10:33:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:33:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:33:38,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:33:38,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528372224] [2021-11-07 10:33:38,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528372224] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:33:38,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:33:38,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 10:33:38,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492536602] [2021-11-07 10:33:38,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:33:38,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 10:33:38,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:33:38,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 10:33:38,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-07 10:33:38,681 INFO L87 Difference]: Start difference. First operand 32491 states and 48107 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 11 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:33:40,723 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:33:42,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:33:44,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:33:47,125 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:33:49,253 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:33:51,402 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:33:53,515 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:33:55,634 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:33:57,789 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:34:11,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:34:17,258 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:34:21,820 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:34:26,582 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:34:28,998 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:35:01,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:35:01,199 INFO L93 Difference]: Finished difference Result 82368 states and 122380 transitions. [2021-11-07 10:35:01,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 10:35:01,200 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 11 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-11-07 10:35:01,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:35:01,426 INFO L225 Difference]: With dead ends: 82368 [2021-11-07 10:35:01,426 INFO L226 Difference]: Without dead ends: 49904 [2021-11-07 10:35:01,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 578.80ms TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2021-11-07 10:35:01,610 INFO L933 BasicCegarLoop]: 2943 mSDtfsCounter, 1375 mSDsluCounter, 22844 mSDsCounter, 0 mSdLazyCounter, 7787 mSolverCounterSat, 38 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75068.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1381 SdHoareTripleChecker+Valid, 25787 SdHoareTripleChecker+Invalid, 7835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 61.78ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 7787 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79634.27ms IncrementalHoareTripleChecker+Time [2021-11-07 10:35:01,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1381 Valid, 25787 Invalid, 7835 Unknown, 0 Unchecked, 61.78ms Time], IncrementalHoareTripleChecker [38 Valid, 7787 Invalid, 10 Unknown, 0 Unchecked, 79634.27ms Time] [2021-11-07 10:35:01,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49904 states. [2021-11-07 10:35:03,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49904 to 39425. [2021-11-07 10:35:03,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39425 states, 38251 states have (on average 1.3521476562704242) internal successors, (51721), 38524 states have internal predecessors, (51721), 471 states have call successors, (471), 251 states have call predecessors, (471), 695 states have return successors, (6399), 731 states have call predecessors, (6399), 471 states have call successors, (6399) [2021-11-07 10:35:03,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39425 states to 39425 states and 58591 transitions. [2021-11-07 10:35:03,811 INFO L78 Accepts]: Start accepts. Automaton has 39425 states and 58591 transitions. Word has length 95 [2021-11-07 10:35:03,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:35:03,811 INFO L470 AbstractCegarLoop]: Abstraction has 39425 states and 58591 transitions. [2021-11-07 10:35:03,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 11 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:35:03,812 INFO L276 IsEmpty]: Start isEmpty. Operand 39425 states and 58591 transitions. [2021-11-07 10:35:03,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 10:35:03,814 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:35:03,814 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:35:03,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 10:35:03,814 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:35:03,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:35:03,814 INFO L85 PathProgramCache]: Analyzing trace with hash 50021369, now seen corresponding path program 1 times [2021-11-07 10:35:03,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:35:03,814 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911762802] [2021-11-07 10:35:03,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:35:03,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:35:03,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:35:04,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-07 10:35:04,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:35:04,418 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:35:04,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:35:04,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911762802] [2021-11-07 10:35:04,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911762802] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:35:04,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:35:04,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-07 10:35:04,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561109485] [2021-11-07 10:35:04,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:35:04,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-07 10:35:04,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:35:04,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-07 10:35:04,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-11-07 10:35:04,420 INFO L87 Difference]: Start difference. First operand 39425 states and 58591 transitions. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 13 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:35:06,462 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:35:08,575 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:35:10,699 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:35:12,822 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:35:14,934 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:35:17,065 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:35:19,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:35:21,327 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:35:23,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:35:38,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:35:51,766 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:35:56,446 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:36:31,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:36:31,969 INFO L93 Difference]: Finished difference Result 99327 states and 148474 transitions. [2021-11-07 10:36:31,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-07 10:36:31,970 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 13 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 95 [2021-11-07 10:36:31,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:36:32,218 INFO L225 Difference]: With dead ends: 99327 [2021-11-07 10:36:32,219 INFO L226 Difference]: Without dead ends: 59938 [2021-11-07 10:36:32,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 538.86ms TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2021-11-07 10:36:32,472 INFO L933 BasicCegarLoop]: 2932 mSDtfsCounter, 1520 mSDsluCounter, 24675 mSDsCounter, 0 mSdLazyCounter, 8419 mSolverCounterSat, 56 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78966.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 27607 SdHoareTripleChecker+Invalid, 8485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.82ms SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 8419 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83651.25ms IncrementalHoareTripleChecker+Time [2021-11-07 10:36:32,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1526 Valid, 27607 Invalid, 8485 Unknown, 0 Unchecked, 68.82ms Time], IncrementalHoareTripleChecker [56 Valid, 8419 Invalid, 10 Unknown, 0 Unchecked, 83651.25ms Time] [2021-11-07 10:36:32,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59938 states. [2021-11-07 10:36:34,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59938 to 39546. [2021-11-07 10:36:34,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39546 states, 38372 states have (on average 1.3512978213280518) internal successors, (51852), 38645 states have internal predecessors, (51852), 471 states have call successors, (471), 251 states have call predecessors, (471), 695 states have return successors, (6399), 731 states have call predecessors, (6399), 471 states have call successors, (6399) [2021-11-07 10:36:34,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39546 states to 39546 states and 58722 transitions. [2021-11-07 10:36:34,890 INFO L78 Accepts]: Start accepts. Automaton has 39546 states and 58722 transitions. Word has length 95 [2021-11-07 10:36:34,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:36:34,890 INFO L470 AbstractCegarLoop]: Abstraction has 39546 states and 58722 transitions. [2021-11-07 10:36:34,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 13 states have internal predecessors, (92), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:36:34,890 INFO L276 IsEmpty]: Start isEmpty. Operand 39546 states and 58722 transitions. [2021-11-07 10:36:34,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 10:36:34,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:36:34,893 INFO L514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:36:34,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 10:36:34,893 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:36:34,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:36:34,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1073164543, now seen corresponding path program 1 times [2021-11-07 10:36:34,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:36:34,894 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057973936] [2021-11-07 10:36:34,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:36:34,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:36:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:36:35,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-07 10:36:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:36:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:36:36,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:36:36,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057973936] [2021-11-07 10:36:36,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057973936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:36:36,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:36:36,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-07 10:36:36,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235595794] [2021-11-07 10:36:36,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:36:36,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-07 10:36:36,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:36:36,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-07 10:36:36,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2021-11-07 10:36:36,848 INFO L87 Difference]: Start difference. First operand 39546 states and 58722 transitions. Second operand has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 15 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:36:38,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:36:41,010 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:36:43,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:36:45,263 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:36:47,380 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:36:49,518 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:37:06,192 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:37:14,283 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:37:19,707 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:37:21,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:37:23,598 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:37:25,619 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:37:56,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:37:56,182 INFO L93 Difference]: Finished difference Result 98117 states and 146802 transitions. [2021-11-07 10:37:56,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-07 10:37:56,183 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 15 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 96 [2021-11-07 10:37:56,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:37:56,601 INFO L225 Difference]: With dead ends: 98117 [2021-11-07 10:37:56,601 INFO L226 Difference]: Without dead ends: 58618 [2021-11-07 10:37:56,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 2165.32ms TimeCoverageRelationStatistics Valid=205, Invalid=1201, Unknown=0, NotChecked=0, Total=1406 [2021-11-07 10:37:56,782 INFO L933 BasicCegarLoop]: 2899 mSDtfsCounter, 1766 mSDsluCounter, 18818 mSDsCounter, 0 mSdLazyCounter, 6090 mSolverCounterSat, 114 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69856.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1771 SdHoareTripleChecker+Valid, 21717 SdHoareTripleChecker+Invalid, 6213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 105.36ms SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 6090 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73939.58ms IncrementalHoareTripleChecker+Time [2021-11-07 10:37:56,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1771 Valid, 21717 Invalid, 6213 Unknown, 0 Unchecked, 105.36ms Time], IncrementalHoareTripleChecker [114 Valid, 6090 Invalid, 9 Unknown, 0 Unchecked, 73939.58ms Time] [2021-11-07 10:37:56,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58618 states. [2021-11-07 10:37:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58618 to 39179. [2021-11-07 10:37:58,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39179 states, 38005 states have (on average 1.3527167477963427) internal successors, (51410), 38278 states have internal predecessors, (51410), 471 states have call successors, (471), 251 states have call predecessors, (471), 695 states have return successors, (6399), 731 states have call predecessors, (6399), 471 states have call successors, (6399) [2021-11-07 10:37:59,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39179 states to 39179 states and 58280 transitions. [2021-11-07 10:37:59,101 INFO L78 Accepts]: Start accepts. Automaton has 39179 states and 58280 transitions. Word has length 96 [2021-11-07 10:37:59,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:37:59,101 INFO L470 AbstractCegarLoop]: Abstraction has 39179 states and 58280 transitions. [2021-11-07 10:37:59,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.470588235294118) internal successors, (93), 15 states have internal predecessors, (93), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-07 10:37:59,101 INFO L276 IsEmpty]: Start isEmpty. Operand 39179 states and 58280 transitions. [2021-11-07 10:37:59,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-07 10:37:59,103 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:37:59,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:37:59,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 10:37:59,103 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:37:59,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:37:59,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1746828208, now seen corresponding path program 1 times [2021-11-07 10:37:59,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:37:59,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556360441] [2021-11-07 10:37:59,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:37:59,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:37:59,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:37:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:37:59,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:37:59,234 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556360441] [2021-11-07 10:37:59,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556360441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:37:59,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:37:59,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-07 10:37:59,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922726301] [2021-11-07 10:37:59,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:37:59,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 10:37:59,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:37:59,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 10:37:59,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 10:37:59,248 INFO L87 Difference]: Start difference. First operand 39179 states and 58280 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:38:03,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:38:03,810 INFO L93 Difference]: Finished difference Result 109176 states and 167343 transitions. [2021-11-07 10:38:03,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 10:38:03,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-11-07 10:38:03,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:38:04,125 INFO L225 Difference]: With dead ends: 109176 [2021-11-07 10:38:04,126 INFO L226 Difference]: Without dead ends: 70067 [2021-11-07 10:38:04,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.29ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 10:38:04,673 INFO L933 BasicCegarLoop]: 2344 mSDtfsCounter, 2629 mSDsluCounter, 6343 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2631 SdHoareTripleChecker+Valid, 8687 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.77ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.04ms IncrementalHoareTripleChecker+Time [2021-11-07 10:38:04,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2631 Valid, 8687 Invalid, 21 Unknown, 0 Unchecked, 6.77ms Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 21.04ms Time] [2021-11-07 10:38:04,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70067 states. [2021-11-07 10:38:07,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70067 to 39269. [2021-11-07 10:38:07,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39269 states, 38095 states have (on average 1.351883449271558) internal successors, (51500), 38368 states have internal predecessors, (51500), 471 states have call successors, (471), 251 states have call predecessors, (471), 695 states have return successors, (6399), 731 states have call predecessors, (6399), 471 states have call successors, (6399) [2021-11-07 10:38:07,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39269 states to 39269 states and 58370 transitions. [2021-11-07 10:38:07,647 INFO L78 Accepts]: Start accepts. Automaton has 39269 states and 58370 transitions. Word has length 95 [2021-11-07 10:38:07,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:38:07,647 INFO L470 AbstractCegarLoop]: Abstraction has 39269 states and 58370 transitions. [2021-11-07 10:38:07,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 5 states have internal predecessors, (94), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:38:07,647 INFO L276 IsEmpty]: Start isEmpty. Operand 39269 states and 58370 transitions. [2021-11-07 10:38:07,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 10:38:07,649 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:38:07,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:38:07,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 10:38:07,649 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:38:07,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:38:07,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1201612486, now seen corresponding path program 1 times [2021-11-07 10:38:07,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:38:07,650 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860372780] [2021-11-07 10:38:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:38:07,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:38:07,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:38:08,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:38:08,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:38:08,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860372780] [2021-11-07 10:38:08,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860372780] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:38:08,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:38:08,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-07 10:38:08,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830266545] [2021-11-07 10:38:08,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:38:08,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-07 10:38:08,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:38:08,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-07 10:38:08,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-07 10:38:08,007 INFO L87 Difference]: Start difference. First operand 39269 states and 58370 transitions. Second operand has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:38:10,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:12,184 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:14,325 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:16,449 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:18,589 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:20,713 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:31,387 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:33,393 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:35,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:37,421 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:39,442 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:41,453 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:43,464 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:48,782 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:54,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:38:57,330 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:39:11,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:39:11,822 INFO L93 Difference]: Finished difference Result 78521 states and 116727 transitions. [2021-11-07 10:39:11,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-07 10:39:11,823 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 10:39:11,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:39:12,008 INFO L225 Difference]: With dead ends: 78521 [2021-11-07 10:39:12,008 INFO L226 Difference]: Without dead ends: 39322 [2021-11-07 10:39:12,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 158.73ms TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2021-11-07 10:39:12,202 INFO L933 BasicCegarLoop]: 2080 mSDtfsCounter, 516 mSDsluCounter, 13504 mSDsCounter, 0 mSdLazyCounter, 3430 mSolverCounterSat, 61 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58717.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 15584 SdHoareTripleChecker+Invalid, 3505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.82ms SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 3430 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 61316.07ms IncrementalHoareTripleChecker+Time [2021-11-07 10:39:12,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [516 Valid, 15584 Invalid, 3505 Unknown, 0 Unchecked, 25.82ms Time], IncrementalHoareTripleChecker [61 Valid, 3430 Invalid, 14 Unknown, 0 Unchecked, 61316.07ms Time] [2021-11-07 10:39:12,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39322 states. [2021-11-07 10:39:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39322 to 39284. [2021-11-07 10:39:14,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39284 states, 38110 states have (on average 1.3517711886643926) internal successors, (51516), 38383 states have internal predecessors, (51516), 471 states have call successors, (471), 251 states have call predecessors, (471), 695 states have return successors, (6399), 731 states have call predecessors, (6399), 471 states have call successors, (6399) [2021-11-07 10:39:14,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39284 states to 39284 states and 58386 transitions. [2021-11-07 10:39:14,443 INFO L78 Accepts]: Start accepts. Automaton has 39284 states and 58386 transitions. Word has length 96 [2021-11-07 10:39:14,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:39:14,443 INFO L470 AbstractCegarLoop]: Abstraction has 39284 states and 58386 transitions. [2021-11-07 10:39:14,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.5) internal successors, (95), 9 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:39:14,444 INFO L276 IsEmpty]: Start isEmpty. Operand 39284 states and 58386 transitions. [2021-11-07 10:39:14,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 10:39:14,445 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:39:14,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:39:14,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 10:39:14,446 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:39:14,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:39:14,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1682692744, now seen corresponding path program 1 times [2021-11-07 10:39:14,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:39:14,446 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105757556] [2021-11-07 10:39:14,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:39:14,446 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:39:14,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:39:14,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:39:14,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:39:14,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105757556] [2021-11-07 10:39:14,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105757556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:39:14,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:39:14,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 10:39:14,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602564071] [2021-11-07 10:39:14,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:39:14,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 10:39:14,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:39:14,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 10:39:14,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-11-07 10:39:14,896 INFO L87 Difference]: Start difference. First operand 39284 states and 58386 transitions. Second operand has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:39:16,954 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:39:19,096 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:39:21,236 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:39:23,369 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:39:25,467 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:39:27,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:39:29,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:39:47,511 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:39:55,191 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:39:57,706 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:39:59,241 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:40:02,488 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:40:04,981 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:40:06,909 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:40:24,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:40:24,324 INFO L93 Difference]: Finished difference Result 93191 states and 145091 transitions. [2021-11-07 10:40:24,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-07 10:40:24,325 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 10:40:24,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:40:24,815 INFO L225 Difference]: With dead ends: 93191 [2021-11-07 10:40:24,815 INFO L226 Difference]: Without dead ends: 53992 [2021-11-07 10:40:25,030 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 312.27ms TimeCoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2021-11-07 10:40:25,030 INFO L933 BasicCegarLoop]: 2192 mSDtfsCounter, 3450 mSDsluCounter, 15394 mSDsCounter, 0 mSdLazyCounter, 4780 mSolverCounterSat, 247 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62253.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3450 SdHoareTripleChecker+Valid, 17586 SdHoareTripleChecker+Invalid, 5037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 38.12ms SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 4780 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65627.26ms IncrementalHoareTripleChecker+Time [2021-11-07 10:40:25,031 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3450 Valid, 17586 Invalid, 5037 Unknown, 0 Unchecked, 38.12ms Time], IncrementalHoareTripleChecker [247 Valid, 4780 Invalid, 10 Unknown, 0 Unchecked, 65627.26ms Time] [2021-11-07 10:40:25,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53992 states. [2021-11-07 10:40:27,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53992 to 49464. [2021-11-07 10:40:27,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49464 states, 47747 states have (on average 1.3465139171047396) internal successors, (64292), 48152 states have internal predecessors, (64292), 681 states have call successors, (681), 376 states have call predecessors, (681), 1028 states have return successors, (11398), 1048 states have call predecessors, (11398), 681 states have call successors, (11398) [2021-11-07 10:40:28,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49464 states to 49464 states and 76371 transitions. [2021-11-07 10:40:28,169 INFO L78 Accepts]: Start accepts. Automaton has 49464 states and 76371 transitions. Word has length 96 [2021-11-07 10:40:28,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:40:28,169 INFO L470 AbstractCegarLoop]: Abstraction has 49464 states and 76371 transitions. [2021-11-07 10:40:28,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.636363636363637) internal successors, (95), 10 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:40:28,169 INFO L276 IsEmpty]: Start isEmpty. Operand 49464 states and 76371 transitions. [2021-11-07 10:40:28,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-07 10:40:28,171 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:40:28,171 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:40:28,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 10:40:28,172 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:40:28,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:40:28,172 INFO L85 PathProgramCache]: Analyzing trace with hash -2075719754, now seen corresponding path program 1 times [2021-11-07 10:40:28,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:40:28,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855388057] [2021-11-07 10:40:28,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:40:28,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:40:28,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:40:28,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:40:28,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:40:28,597 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855388057] [2021-11-07 10:40:28,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855388057] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 10:40:28,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 10:40:28,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 10:40:28,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840935587] [2021-11-07 10:40:28,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-07 10:40:28,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 10:40:28,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:40:28,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 10:40:28,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:40:28,599 INFO L87 Difference]: Start difference. First operand 49464 states and 76371 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:40:32,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:40:32,224 INFO L93 Difference]: Finished difference Result 98024 states and 161392 transitions. [2021-11-07 10:40:32,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 10:40:32,225 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-07 10:40:32,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:40:32,694 INFO L225 Difference]: With dead ends: 98024 [2021-11-07 10:40:32,694 INFO L226 Difference]: Without dead ends: 48645 [2021-11-07 10:40:33,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.50ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 10:40:33,383 INFO L933 BasicCegarLoop]: 2113 mSDtfsCounter, 0 mSDsluCounter, 2111 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4224 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.13ms IncrementalHoareTripleChecker+Time [2021-11-07 10:40:33,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 4224 Invalid, 3 Unknown, 0 Unchecked, 3.41ms Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 6.13ms Time] [2021-11-07 10:40:33,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48645 states. [2021-11-07 10:40:36,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48645 to 48630. [2021-11-07 10:40:36,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48630 states, 46913 states have (on average 1.3477500905932258) internal successors, (63227), 47318 states have internal predecessors, (63227), 681 states have call successors, (681), 376 states have call predecessors, (681), 1028 states have return successors, (11380), 1048 states have call predecessors, (11380), 681 states have call successors, (11380) [2021-11-07 10:40:36,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48630 states to 48630 states and 75288 transitions. [2021-11-07 10:40:36,715 INFO L78 Accepts]: Start accepts. Automaton has 48630 states and 75288 transitions. Word has length 96 [2021-11-07 10:40:36,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:40:36,715 INFO L470 AbstractCegarLoop]: Abstraction has 48630 states and 75288 transitions. [2021-11-07 10:40:36,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:40:36,715 INFO L276 IsEmpty]: Start isEmpty. Operand 48630 states and 75288 transitions. [2021-11-07 10:40:36,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 10:40:36,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:40:36,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:40:36,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 10:40:36,717 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:40:36,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:40:36,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1231752105, now seen corresponding path program 1 times [2021-11-07 10:40:36,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:40:36,718 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680408192] [2021-11-07 10:40:36,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:40:36,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:40:36,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:40:37,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:40:37,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:40:37,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680408192] [2021-11-07 10:40:37,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680408192] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 10:40:37,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950579118] [2021-11-07 10:40:37,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:40:37,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:40:37,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:40:37,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:40:37,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 10:40:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:40:38,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 2521 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-07 10:40:38,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 10:40:38,624 INFO L354 Elim1Store]: treesize reduction 35, result has 16.7 percent of original size [2021-11-07 10:40:38,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 16 [2021-11-07 10:40:38,698 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-07 10:40:38,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2021-11-07 10:40:38,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-07 10:40:38,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:40:38,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 10:40:40,716 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| Int)) (= (select (select (store |c_#memory_int| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_int| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base|) (+ |ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset|) |c_ttusb_dec_probe_#Ultimate.C_memset_#value|)) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) is different from false [2021-11-07 10:40:42,732 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| Int)) (= (select (select (store |c_#memory_int| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_int| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base|) (+ |ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset|) 0)) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) is different from false [2021-11-07 10:40:44,749 WARN L838 $PredicateComparison]: unable to prove that (forall ((|ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset| Int) (ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.offset Int) (|ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.base (store (select |c_#memory_int| c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.base) (+ ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.offset 2051) v_DerPreprocessor_1)))) (store .cse0 |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| (store (select .cse0 |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base|) (+ |ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset|) 0))) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) is different from false [2021-11-07 10:40:46,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 79 [2021-11-07 10:40:47,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-07 10:40:47,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950579118] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 10:40:47,056 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-07 10:40:47,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 14] total 34 [2021-11-07 10:40:47,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878638164] [2021-11-07 10:40:47,057 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-07 10:40:47,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-07 10:40:47,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 10:40:47,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-07 10:40:47,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=908, Unknown=3, NotChecked=186, Total=1190 [2021-11-07 10:40:47,058 INFO L87 Difference]: Start difference. First operand 48630 states and 75288 transitions. Second operand has 35 states, 35 states have (on average 7.285714285714286) internal successors, (255), 34 states have internal predecessors, (255), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:40:49,107 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:40:51,251 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:40:53,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:40:55,504 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:40:57,643 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:40:59,764 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:41:01,875 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:41:04,009 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:41:06,133 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:41:08,242 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:41:10,361 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:41:12,460 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:41:15,281 WARN L838 $PredicateComparison]: unable to prove that (and (< (+ |c_ttusb_dec_probe_kzalloc_#res.base| 1) |c_~#debug~0.base|) (<= (+ |c_#StackHeapBarrier| 1) |c_~#debug~0.base|) (not (= |c_~#debug~0.base| |c_ttusb_dec_probe_ldv_malloc_#res.base|)) (not (= |c_ttusb_dec_probe___kmalloc_#res.base| |c_~#debug~0.base|)) (not (= |c_~#debug~0.base| c_ttusb_dec_probe_ttusb_dec_init_usb_~dec.base)) (= (select (select |c_#memory_int| |c_~#debug~0.base|) |c_~#debug~0.offset|) 0) (not (= |c_ttusb_dec_probe_kmalloc_#res.base| |c_~#debug~0.base|)) (forall ((|ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset| Int) (ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.offset Int) (|ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.base (store (select |c_#memory_int| c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.base) (+ ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.offset 2051) v_DerPreprocessor_1)))) (store .cse0 |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| (store (select .cse0 |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base|) (+ |ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset|) 0))) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) (< (+ c_ttusb_dec_probe_~dec~10.base 1) |c_~#debug~0.base|) (< (+ |c_ttusb_dec_probe_ldv_malloc_#res.base| 1) |c_~#debug~0.base|) (< (+ c_ttusb_dec_probe_ttusb_dec_init_usb_~dec.base 1) |c_~#debug~0.base|) (not (= |c_~#debug~0.base| |c_ttusb_dec_probe_kzalloc_#res.base|)) (< (+ c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.base 1) |c_~#debug~0.base|) (< (+ |c_ttusb_dec_probe_kmalloc_#res.base| 1) |c_~#debug~0.base|) (< (+ |c_ttusb_dec_probe___kmalloc_#res.base| 1) |c_~#debug~0.base|) (not (= c_ttusb_dec_probe_~dec~10.base |c_~#debug~0.base|))) is different from false [2021-11-07 10:41:17,298 WARN L838 $PredicateComparison]: unable to prove that (and (= (select (select |c_#memory_int| |c_~#debug~0.base|) |c_~#debug~0.offset|) 0) (forall ((|ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset| Int) (ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.offset Int) (|ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.base (store (select |c_#memory_int| c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.base) (+ ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.offset 2051) v_DerPreprocessor_1)))) (store .cse0 |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| (store (select .cse0 |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base|) (+ |ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset|) 0))) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) (< (+ c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.base 1) |c_~#debug~0.base|)) is different from false [2021-11-07 10:41:19,423 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| Int)) (= (select (select (store |c_#memory_int| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_int| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base|) (+ |ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset|) 0)) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) (= (select (select |c_#memory_int| |c_~#debug~0.base|) |c_~#debug~0.offset|) 0) (not (= |c_~#debug~0.base| c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.base))) is different from false [2021-11-07 10:41:21,429 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((|ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| Int)) (= (select (select (store |c_#memory_int| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_int| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base|) (+ |ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset|) |c_ttusb_dec_probe_#Ultimate.C_memset_#value|)) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) (= 0 |c_ttusb_dec_probe_#Ultimate.C_memset_#value|) (= (select (select |c_#memory_int| |c_~#debug~0.base|) |c_~#debug~0.offset|) 0) (not (= |c_~#debug~0.base| c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.base)) (= (select (select (store |c_#memory_int| |c_ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| (store (select |c_#memory_int| |c_ttusb_dec_probe_#Ultimate.C_memset_#ptr.base|) (+ |c_ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| |c_ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset|) |c_ttusb_dec_probe_#Ultimate.C_memset_#value|)) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) is different from false [2021-11-07 10:41:33,148 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:41:37,618 WARN L838 $PredicateComparison]: unable to prove that (and (< (+ |c_ttusb_dec_probe_kzalloc_#res.base| 1) |c_~#debug~0.base|) (<= (+ |c_#StackHeapBarrier| 1) |c_~#debug~0.base|) (not (= |c_~#debug~0.base| c_ttusb_dec_probe_ttusb_dec_init_usb_~dec.base)) (= (select (select |c_#memory_int| |c_~#debug~0.base|) |c_~#debug~0.offset|) 0) (forall ((|ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset| Int) (ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.offset Int) (|ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| Int) (|ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| Int) (v_DerPreprocessor_1 Int)) (= (select (select (let ((.cse0 (store |c_#memory_int| c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.base (store (select |c_#memory_int| c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.base) (+ ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.offset 2051) v_DerPreprocessor_1)))) (store .cse0 |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base| (store (select .cse0 |ttusb_dec_probe_#Ultimate.C_memset_#ptr.base|) (+ |ttusb_dec_probe_#Ultimate.C_memset_#t~loopctr890| |ttusb_dec_probe_#Ultimate.C_memset_#ptr.offset|) 0))) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) (< (+ c_ttusb_dec_probe_~dec~10.base 1) |c_~#debug~0.base|) (< (+ c_ttusb_dec_probe_ttusb_dec_init_usb_~dec.base 1) |c_~#debug~0.base|) (not (= |c_~#debug~0.base| |c_ttusb_dec_probe_kzalloc_#res.base|)) (< (+ c_ttusb_dec_probe_ttusb_dec_alloc_iso_urbs_~dec.base 1) |c_~#debug~0.base|) (< (+ |c_ttusb_dec_probe_kmalloc_#res.base| 1) |c_~#debug~0.base|) (< (+ |c_ttusb_dec_probe___kmalloc_#res.base| 1) |c_~#debug~0.base|)) is different from false [2021-11-07 10:41:41,610 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:41:44,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:41:47,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:41:53,329 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:41:54,664 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:41:57,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:41:59,165 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:42:01,335 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:42:13,898 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-07 10:42:20,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 10:42:20,976 INFO L93 Difference]: Finished difference Result 106222 states and 168580 transitions. [2021-11-07 10:42:20,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 10:42:20,978 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.285714285714286) internal successors, (255), 34 states have internal predecessors, (255), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-11-07 10:42:20,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 10:42:21,352 INFO L225 Difference]: With dead ends: 106222 [2021-11-07 10:42:21,352 INFO L226 Difference]: Without dead ends: 66993 [2021-11-07 10:42:21,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 181 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 18709.69ms TimeCoverageRelationStatistics Valid=428, Invalid=1948, Unknown=8, NotChecked=808, Total=3192 [2021-11-07 10:42:21,699 INFO L933 BasicCegarLoop]: 2151 mSDtfsCounter, 2464 mSDsluCounter, 40009 mSDsCounter, 0 mSdLazyCounter, 4267 mSolverCounterSat, 247 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75619.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2468 SdHoareTripleChecker+Valid, 42160 SdHoareTripleChecker+Invalid, 9505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 58.29ms SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 4267 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 4975 IncrementalHoareTripleChecker+Unchecked, 79019.18ms IncrementalHoareTripleChecker+Time [2021-11-07 10:42:21,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2468 Valid, 42160 Invalid, 9505 Unknown, 0 Unchecked, 58.29ms Time], IncrementalHoareTripleChecker [247 Valid, 4267 Invalid, 16 Unknown, 4975 Unchecked, 79019.18ms Time] [2021-11-07 10:42:21,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66993 states. [2021-11-07 10:42:25,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66993 to 65795. [2021-11-07 10:42:25,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65795 states, 63288 states have (on average 1.342402983187966) internal successors, (84958), 63935 states have internal predecessors, (84958), 1001 states have call successors, (1001), 616 states have call predecessors, (1001), 1498 states have return successors, (14753), 1427 states have call predecessors, (14753), 1001 states have call successors, (14753) [2021-11-07 10:42:25,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65795 states to 65795 states and 100712 transitions. [2021-11-07 10:42:25,613 INFO L78 Accepts]: Start accepts. Automaton has 65795 states and 100712 transitions. Word has length 97 [2021-11-07 10:42:25,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 10:42:25,614 INFO L470 AbstractCegarLoop]: Abstraction has 65795 states and 100712 transitions. [2021-11-07 10:42:25,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.285714285714286) internal successors, (255), 34 states have internal predecessors, (255), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 10:42:25,614 INFO L276 IsEmpty]: Start isEmpty. Operand 65795 states and 100712 transitions. [2021-11-07 10:42:25,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-07 10:42:25,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-07 10:42:25,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 10:42:25,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 10:42:25,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-11-07 10:42:25,825 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-07 10:42:25,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 10:42:25,826 INFO L85 PathProgramCache]: Analyzing trace with hash 838725095, now seen corresponding path program 1 times [2021-11-07 10:42:25,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 10:42:25,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553031278] [2021-11-07 10:42:25,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:42:25,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 10:42:25,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 10:42:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 10:42:26,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 10:42:26,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553031278] [2021-11-07 10:42:26,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553031278] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 10:42:26,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939857844] [2021-11-07 10:42:26,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 10:42:26,084 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 10:42:26,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-07 10:42:26,086 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 10:42:26,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process