./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 4d014703 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-4d01470 [2021-11-02 14:25:02,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 14:25:02,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 14:25:02,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 14:25:02,630 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 14:25:02,631 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 14:25:02,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 14:25:02,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 14:25:02,638 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 14:25:02,639 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 14:25:02,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 14:25:02,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 14:25:02,642 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 14:25:02,644 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 14:25:02,646 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 14:25:02,647 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 14:25:02,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 14:25:02,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 14:25:02,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 14:25:02,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 14:25:02,659 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 14:25:02,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 14:25:02,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 14:25:02,664 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 14:25:02,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 14:25:02,667 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 14:25:02,667 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 14:25:02,668 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 14:25:02,669 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 14:25:02,670 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 14:25:02,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 14:25:02,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 14:25:02,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 14:25:02,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 14:25:02,673 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 14:25:02,673 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 14:25:02,674 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 14:25:02,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 14:25:02,675 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 14:25:02,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 14:25:02,676 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 14:25:02,677 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 14:25:02,694 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 14:25:02,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 14:25:02,700 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 14:25:02,701 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 14:25:02,702 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 14:25:02,702 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 14:25:02,702 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 14:25:02,702 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 14:25:02,702 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 14:25:02,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 14:25:02,704 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 14:25:02,704 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 14:25:02,704 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 14:25:02,704 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 14:25:02,704 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 14:25:02,704 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 14:25:02,705 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 14:25:02,705 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 14:25:02,705 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 14:25:02,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 14:25:02,705 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 14:25:02,705 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 14:25:02,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 14:25:02,706 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 14:25:02,706 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 14:25:02,706 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 14:25:02,706 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 14:25:02,707 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 14:25:02,707 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 14:25:02,708 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec [2021-11-02 14:25:02,931 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 14:25:02,953 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 14:25:02,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 14:25:02,957 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 14:25:02,958 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 14:25:02,960 INFO L432 ainManager$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 [2021-11-02 14:25:03,016 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca2499145/431e97c8257241f09a5204ab00b82e8b/FLAG283834024 [2021-11-02 14:25:03,687 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 14:25:03,689 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 [2021-11-02 14:25:03,731 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca2499145/431e97c8257241f09a5204ab00b82e8b/FLAG283834024 [2021-11-02 14:25:03,807 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca2499145/431e97c8257241f09a5204ab00b82e8b [2021-11-02 14:25:03,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 14:25:03,811 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 14:25:03,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 14:25:03,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 14:25:03,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 14:25:03,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:25:03" (1/1) ... [2021-11-02 14:25:03,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@633053d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:25:03, skipping insertion in model container [2021-11-02 14:25:03,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 02:25:03" (1/1) ... [2021-11-02 14:25:03,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 14:25:03,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 14:25:05,024 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] [2021-11-02 14:25:05,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 14:25:05,088 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 14:25:05,317 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] [2021-11-02 14:25:05,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 14:25:05,386 INFO L208 MainTranslator]: Completed translation [2021-11-02 14:25:05,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:25:05 WrapperNode [2021-11-02 14:25:05,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 14:25:05,389 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 14:25:05,389 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 14:25:05,390 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 14:25:05,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:25:05" (1/1) ... [2021-11-02 14:25:05,476 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:25:05" (1/1) ... [2021-11-02 14:25:05,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 14:25:05,684 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 14:25:05,684 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 14:25:05,684 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 14:25:05,690 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:25:05" (1/1) ... [2021-11-02 14:25:05,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:25:05" (1/1) ... [2021-11-02 14:25:05,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:25:05" (1/1) ... [2021-11-02 14:25:05,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:25:05" (1/1) ... [2021-11-02 14:25:05,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:25:05" (1/1) ... [2021-11-02 14:25:05,916 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:25:05" (1/1) ... [2021-11-02 14:25:05,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:25:05" (1/1) ... [2021-11-02 14:25:05,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 14:25:05,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 14:25:05,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 14:25:05,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 14:25:05,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:25:05" (1/1) ... [2021-11-02 14:25:05,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 14:25:05,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:25:05,992 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) [2021-11-02 14:25:06,024 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 [2021-11-02 14:25:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-02 14:25:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-02 14:25:06,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-02 14:25:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 14:25:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2021-11-02 14:25:06,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2021-11-02 14:25:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 14:25:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 14:25:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 14:25:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 14:25:06,046 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 14:25:06,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-02 14:25:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 14:25:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 14:25:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 14:25:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2021-11-02 14:25:06,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2021-11-02 14:25:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2021-11-02 14:25:06,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2021-11-02 14:25:06,047 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 14:25:06,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-02 14:25:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2021-11-02 14:25:06,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2021-11-02 14:25:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 14:25:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-02 14:25:06,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 14:25:06,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 14:25:06,813 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 14:25:07,597 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##623: assume !false; [2021-11-02 14:25:07,597 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##622: assume false; [2021-11-02 14:25:07,598 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 14:25:07,621 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2021-11-02 14:25:07,622 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2021-11-02 14:25:07,626 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 14:25:07,626 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 14:25:08,424 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##232: assume false; [2021-11-02 14:25:08,424 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##233: assume !false; [2021-11-02 14:25:08,424 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint L8653: ttusb_dec_start_feed_#res := 0; [2021-11-02 14:25:08,424 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##194: assume !false; [2021-11-02 14:25:08,425 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##193: assume false; [2021-11-02 14:25:08,427 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-02 14:25:10,851 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-11-02 14:25:10,851 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-11-02 14:25:10,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 14:25:10,889 INFO L299 CfgBuilder]: Removed 1122 assume(true) statements. [2021-11-02 14:25:10,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:25:10 BoogieIcfgContainer [2021-11-02 14:25:10,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 14:25:10,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 14:25:10,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 14:25:10,896 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 14:25:10,896 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 02:25:03" (1/3) ... [2021-11-02 14:25:10,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207068da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:25:10, skipping insertion in model container [2021-11-02 14:25:10,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 02:25:05" (2/3) ... [2021-11-02 14:25:10,897 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@207068da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 02:25:10, skipping insertion in model container [2021-11-02 14:25:10,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 02:25:10" (3/3) ... [2021-11-02 14:25:10,898 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2021-11-02 14:25:10,902 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 14:25:10,902 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-02 14:25:10,937 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 14:25:10,941 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 [2021-11-02 14:25:10,941 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-02 14:25:10,966 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) [2021-11-02 14:25:10,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 14:25:10,969 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:25:10,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:25:10,970 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)] === [2021-11-02 14:25:10,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:25:10,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1121473617, now seen corresponding path program 1 times [2021-11-02 14:25:10,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:25:10,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511373270] [2021-11-02 14:25:10,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:25:10,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:25:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:25:11,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:25:11,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:25:11,495 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511373270] [2021-11-02 14:25:11,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511373270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:25:11,495 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:25:11,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:25:11,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935397952] [2021-11-02 14:25:11,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:25:11,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:25:11,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:25:11,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:25:11,540 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) [2021-11-02 14:25:13,637 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:25:21,876 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 [] [2021-11-02 14:25:39,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:25:39,700 INFO L93 Difference]: Finished difference Result 3156 states and 4744 transitions. [2021-11-02 14:25:39,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 14:25:39,702 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 [2021-11-02 14:25:39,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:25:39,716 INFO L225 Difference]: With dead ends: 3156 [2021-11-02 14:25:39,716 INFO L226 Difference]: Without dead ends: 1575 [2021-11-02 14:25:39,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.83ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:25:39,727 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 87 mSDsluCounter, 4279 mSDsCounter, 0 mSdLazyCounter, 6359 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26179.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 6366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.31ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6359 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27741.63ms IncrementalHoareTripleChecker+Time [2021-11-02 14:25:39,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 90 Invalid, 6366 Unknown, 0 Unchecked, 46.31ms Time], IncrementalHoareTripleChecker [5 Valid, 6359 Invalid, 2 Unknown, 0 Unchecked, 27741.63ms Time] [2021-11-02 14:25:39,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2021-11-02 14:25:39,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1548. [2021-11-02 14:25:39,794 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) [2021-11-02 14:25:39,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1548 states to 1548 states and 2129 transitions. [2021-11-02 14:25:39,801 INFO L78 Accepts]: Start accepts. Automaton has 1548 states and 2129 transitions. Word has length 10 [2021-11-02 14:25:39,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:25:39,801 INFO L470 AbstractCegarLoop]: Abstraction has 1548 states and 2129 transitions. [2021-11-02 14:25:39,801 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) [2021-11-02 14:25:39,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1548 states and 2129 transitions. [2021-11-02 14:25:39,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-02 14:25:39,802 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:25:39,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:25:39,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 14:25:39,802 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)] === [2021-11-02 14:25:39,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:25:39,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1123320659, now seen corresponding path program 1 times [2021-11-02 14:25:39,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:25:39,804 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105162310] [2021-11-02 14:25:39,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:25:39,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:25:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:25:40,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:25:40,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:25:40,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105162310] [2021-11-02 14:25:40,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105162310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:25:40,013 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:25:40,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 14:25:40,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480767367] [2021-11-02 14:25:40,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 14:25:40,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:25:40,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 14:25:40,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:25:40,016 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) [2021-11-02 14:25:42,060 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 [] [2021-11-02 14:25:47,999 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:25:51,376 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:26:00,301 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 [] [2021-11-02 14:26:04,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:26:04,053 INFO L93 Difference]: Finished difference Result 4493 states and 6211 transitions. [2021-11-02 14:26:04,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 14:26:04,053 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 [2021-11-02 14:26:04,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:26:04,066 INFO L225 Difference]: With dead ends: 4493 [2021-11-02 14:26:04,066 INFO L226 Difference]: Without dead ends: 2955 [2021-11-02 14:26:04,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.03ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:26:04,074 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1936 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 4204 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22284.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 4212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.13ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 4204 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23701.15ms IncrementalHoareTripleChecker+Time [2021-11-02 14:26:04,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1936 Valid, 74 Invalid, 4212 Unknown, 0 Unchecked, 25.13ms Time], IncrementalHoareTripleChecker [6 Valid, 4204 Invalid, 2 Unknown, 0 Unchecked, 23701.15ms Time] [2021-11-02 14:26:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2955 states. [2021-11-02 14:26:04,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2955 to 2942. [2021-11-02 14:26:04,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2942 states, 2898 states have (on average 1.383367839889579) internal successors, (4009), 2909 states have internal predecessors, (4009), 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) [2021-11-02 14:26:04,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2942 states to 2942 states and 4069 transitions. [2021-11-02 14:26:04,138 INFO L78 Accepts]: Start accepts. Automaton has 2942 states and 4069 transitions. Word has length 10 [2021-11-02 14:26:04,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:26:04,138 INFO L470 AbstractCegarLoop]: Abstraction has 2942 states and 4069 transitions. [2021-11-02 14:26:04,139 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) [2021-11-02 14:26:04,139 INFO L276 IsEmpty]: Start isEmpty. Operand 2942 states and 4069 transitions. [2021-11-02 14:26:04,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-02 14:26:04,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:26:04,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-02 14:26:04,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 14:26:04,140 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)] === [2021-11-02 14:26:04,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:26:04,140 INFO L85 PathProgramCache]: Analyzing trace with hash -463198233, now seen corresponding path program 1 times [2021-11-02 14:26:04,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:26:04,141 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778241192] [2021-11-02 14:26:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:26:04,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:26:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:26:04,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:26:04,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:26:04,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778241192] [2021-11-02 14:26:04,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778241192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:26:04,330 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:26:04,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 14:26:04,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345890366] [2021-11-02 14:26:04,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 14:26:04,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:26:04,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 14:26:04,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:26:04,331 INFO L87 Difference]: Start difference. First operand 2942 states and 4069 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) [2021-11-02 14:26:06,377 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 [] [2021-11-02 14:26:11,173 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:26:16,270 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:26:29,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:26:29,786 INFO L93 Difference]: Finished difference Result 8681 states and 12084 transitions. [2021-11-02 14:26:29,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 14:26:29,789 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 [2021-11-02 14:26:29,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:26:29,815 INFO L225 Difference]: With dead ends: 8681 [2021-11-02 14:26:29,815 INFO L226 Difference]: Without dead ends: 5746 [2021-11-02 14:26:29,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:26:29,832 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 1944 mSDsluCounter, 2123 mSDsCounter, 0 mSdLazyCounter, 4193 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23462.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 4196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4193 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25064.37ms IncrementalHoareTripleChecker+Time [2021-11-02 14:26:29,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1944 Valid, 72 Invalid, 4196 Unknown, 0 Unchecked, 19.57ms Time], IncrementalHoareTripleChecker [1 Valid, 4193 Invalid, 2 Unknown, 0 Unchecked, 25064.37ms Time] [2021-11-02 14:26:29,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5746 states. [2021-11-02 14:26:29,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5746 to 5723. [2021-11-02 14:26:29,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5723 states, 5643 states have (on average 1.3840155945419104) internal successors, (7810), 5658 states have internal predecessors, (7810), 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) [2021-11-02 14:26:29,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5723 states to 5723 states and 7966 transitions. [2021-11-02 14:26:29,988 INFO L78 Accepts]: Start accepts. Automaton has 5723 states and 7966 transitions. Word has length 11 [2021-11-02 14:26:29,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:26:29,988 INFO L470 AbstractCegarLoop]: Abstraction has 5723 states and 7966 transitions. [2021-11-02 14:26:29,989 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) [2021-11-02 14:26:29,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5723 states and 7966 transitions. [2021-11-02 14:26:29,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-02 14:26:29,990 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:26:29,991 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] [2021-11-02 14:26:29,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 14:26:29,991 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)] === [2021-11-02 14:26:29,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:26:29,992 INFO L85 PathProgramCache]: Analyzing trace with hash 929756394, now seen corresponding path program 1 times [2021-11-02 14:26:29,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:26:29,992 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512730834] [2021-11-02 14:26:29,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:26:29,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:26:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:26:30,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:26:30,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:26:30,177 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512730834] [2021-11-02 14:26:30,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512730834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:26:30,177 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:26:30,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 14:26:30,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157400116] [2021-11-02 14:26:30,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-02 14:26:30,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:26:30,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-02 14:26:30,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:26:30,179 INFO L87 Difference]: Start difference. First operand 5723 states and 7966 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) [2021-11-02 14:26:32,229 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:26:41,424 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:26:44,790 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:26:46,700 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:26:48,106 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:27:00,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:27:00,024 INFO L93 Difference]: Finished difference Result 11474 states and 15982 transitions. [2021-11-02 14:27:00,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-02 14:27:00,025 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 [2021-11-02 14:27:00,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:27:00,050 INFO L225 Difference]: With dead ends: 11474 [2021-11-02 14:27:00,050 INFO L226 Difference]: Without dead ends: 5758 [2021-11-02 14:27:00,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.60ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-02 14:27:00,074 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 2105 mSDsCounter, 0 mSdLazyCounter, 4189 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27931.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 4196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 27.51ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 4189 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29500.43ms IncrementalHoareTripleChecker+Time [2021-11-02 14:27:00,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 47 Invalid, 4196 Unknown, 0 Unchecked, 27.51ms Time], IncrementalHoareTripleChecker [5 Valid, 4189 Invalid, 2 Unknown, 0 Unchecked, 29500.43ms Time] [2021-11-02 14:27:00,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5758 states. [2021-11-02 14:27:00,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5758 to 5758. [2021-11-02 14:27:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5758 states, 5678 states have (on average 1.3835857696371963) internal successors, (7856), 5693 states have internal predecessors, (7856), 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) [2021-11-02 14:27:00,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5758 states to 5758 states and 8012 transitions. [2021-11-02 14:27:00,244 INFO L78 Accepts]: Start accepts. Automaton has 5758 states and 8012 transitions. Word has length 44 [2021-11-02 14:27:00,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:27:00,245 INFO L470 AbstractCegarLoop]: Abstraction has 5758 states and 8012 transitions. [2021-11-02 14:27:00,245 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) [2021-11-02 14:27:00,246 INFO L276 IsEmpty]: Start isEmpty. Operand 5758 states and 8012 transitions. [2021-11-02 14:27:00,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 14:27:00,254 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:27:00,256 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] [2021-11-02 14:27:00,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 14:27:00,256 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)] === [2021-11-02 14:27:00,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:27:00,258 INFO L85 PathProgramCache]: Analyzing trace with hash -2093944530, now seen corresponding path program 1 times [2021-11-02 14:27:00,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:27:00,258 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237742362] [2021-11-02 14:27:00,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:27:00,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:27:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:27:00,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-02 14:27:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:27:00,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:27:00,743 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:27:00,743 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237742362] [2021-11-02 14:27:00,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237742362] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:27:00,743 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:27:00,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-02 14:27:00,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266522765] [2021-11-02 14:27:00,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-02 14:27:00,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:27:00,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-02 14:27:00,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-02 14:27:00,744 INFO L87 Difference]: Start difference. First operand 5758 states and 8012 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) [2021-11-02 14:27:02,796 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 [] [2021-11-02 14:27:31,869 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:27:41,231 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:27:44,663 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:28:25,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:28:25,439 INFO L93 Difference]: Finished difference Result 15151 states and 21237 transitions. [2021-11-02 14:28:25,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-02 14:28:25,440 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 [2021-11-02 14:28:25,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:28:25,478 INFO L225 Difference]: With dead ends: 15151 [2021-11-02 14:28:25,478 INFO L226 Difference]: Without dead ends: 9401 [2021-11-02 14:28:25,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 815.68ms TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2021-11-02 14:28:25,509 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 2889 mSDsluCounter, 12542 mSDsCounter, 0 mSdLazyCounter, 16134 mSolverCounterSat, 63 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78634.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2891 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 16199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 163.88ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 16134 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 83173.49ms IncrementalHoareTripleChecker+Time [2021-11-02 14:28:25,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2891 Valid, 193 Invalid, 16199 Unknown, 0 Unchecked, 163.88ms Time], IncrementalHoareTripleChecker [63 Valid, 16134 Invalid, 2 Unknown, 0 Unchecked, 83173.49ms Time] [2021-11-02 14:28:25,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9401 states. [2021-11-02 14:28:25,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9401 to 5901. [2021-11-02 14:28:25,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5901 states, 5797 states have (on average 1.3788166292910127) internal successors, (7993), 5827 states have internal predecessors, (7993), 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) [2021-11-02 14:28:25,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5901 states to 5901 states and 8207 transitions. [2021-11-02 14:28:25,712 INFO L78 Accepts]: Start accepts. Automaton has 5901 states and 8207 transitions. Word has length 62 [2021-11-02 14:28:25,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:28:25,712 INFO L470 AbstractCegarLoop]: Abstraction has 5901 states and 8207 transitions. [2021-11-02 14:28:25,713 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) [2021-11-02 14:28:25,713 INFO L276 IsEmpty]: Start isEmpty. Operand 5901 states and 8207 transitions. [2021-11-02 14:28:25,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 14:28:25,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:28:25,714 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] [2021-11-02 14:28:25,715 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 14:28:25,715 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)] === [2021-11-02 14:28:25,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:28:25,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1303629488, now seen corresponding path program 1 times [2021-11-02 14:28:25,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:28:25,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989231594] [2021-11-02 14:28:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:28:25,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:28:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:28:25,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-02 14:28:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:28:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:28:26,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:28:26,047 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989231594] [2021-11-02 14:28:26,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989231594] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:28:26,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:28:26,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:28:26,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204210745] [2021-11-02 14:28:26,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:28:26,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:28:26,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:28:26,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:28:26,049 INFO L87 Difference]: Start difference. First operand 5901 states and 8207 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) [2021-11-02 14:28:28,090 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 [] [2021-11-02 14:28:49,611 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:28:59,371 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:29:01,085 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:29:27,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:29:27,126 INFO L93 Difference]: Finished difference Result 14828 states and 20815 transitions. [2021-11-02 14:29:27,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:29:27,127 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 [2021-11-02 14:29:27,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:29:27,156 INFO L225 Difference]: With dead ends: 14828 [2021-11-02 14:29:27,157 INFO L226 Difference]: Without dead ends: 8935 [2021-11-02 14:29:27,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 147.90ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:29:27,182 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 1512 mSDsluCounter, 6336 mSDsCounter, 0 mSdLazyCounter, 11269 mSolverCounterSat, 50 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56881.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 11321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 82.42ms SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 11269 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60362.80ms IncrementalHoareTripleChecker+Time [2021-11-02 14:29:27,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1515 Valid, 100 Invalid, 11321 Unknown, 0 Unchecked, 82.42ms Time], IncrementalHoareTripleChecker [50 Valid, 11269 Invalid, 2 Unknown, 0 Unchecked, 60362.80ms Time] [2021-11-02 14:29:27,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8935 states. [2021-11-02 14:29:27,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8935 to 6127. [2021-11-02 14:29:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6127 states, 6005 states have (on average 1.3738551207327228) internal successors, (8250), 6040 states have internal predecessors, (8250), 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) [2021-11-02 14:29:27,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6127 states to 6127 states and 8527 transitions. [2021-11-02 14:29:27,354 INFO L78 Accepts]: Start accepts. Automaton has 6127 states and 8527 transitions. Word has length 62 [2021-11-02 14:29:27,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:29:27,356 INFO L470 AbstractCegarLoop]: Abstraction has 6127 states and 8527 transitions. [2021-11-02 14:29:27,356 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) [2021-11-02 14:29:27,356 INFO L276 IsEmpty]: Start isEmpty. Operand 6127 states and 8527 transitions. [2021-11-02 14:29:27,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 14:29:27,358 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:29:27,358 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] [2021-11-02 14:29:27,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 14:29:27,358 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)] === [2021-11-02 14:29:27,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:29:27,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1403699634, now seen corresponding path program 1 times [2021-11-02 14:29:27,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:29:27,359 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527947165] [2021-11-02 14:29:27,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:29:27,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:29:27,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:29:27,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-02 14:29:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:29:27,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:29:27,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:29:27,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527947165] [2021-11-02 14:29:27,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527947165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:29:27,790 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:29:27,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-02 14:29:27,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670093669] [2021-11-02 14:29:27,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-02 14:29:27,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:29:27,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-02 14:29:27,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:29:27,791 INFO L87 Difference]: Start difference. First operand 6127 states and 8527 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) [2021-11-02 14:29:29,842 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 [] [2021-11-02 14:30:03,060 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:30:15,109 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:30:17,013 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:30:19,974 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:30:21,166 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:30:26,208 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:31:13,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:31:13,288 INFO L93 Difference]: Finished difference Result 12955 states and 18141 transitions. [2021-11-02 14:31:13,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-02 14:31:13,289 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 [2021-11-02 14:31:13,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:31:13,316 INFO L225 Difference]: With dead ends: 12955 [2021-11-02 14:31:13,317 INFO L226 Difference]: Without dead ends: 9921 [2021-11-02 14:31:13,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 665.03ms TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2021-11-02 14:31:13,334 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 4834 mSDsluCounter, 14815 mSDsCounter, 0 mSdLazyCounter, 20329 mSolverCounterSat, 128 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98259.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4837 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 20460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 182.93ms SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 20329 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104072.17ms IncrementalHoareTripleChecker+Time [2021-11-02 14:31:13,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4837 Valid, 281 Invalid, 20460 Unknown, 0 Unchecked, 182.93ms Time], IncrementalHoareTripleChecker [128 Valid, 20329 Invalid, 3 Unknown, 0 Unchecked, 104072.17ms Time] [2021-11-02 14:31:13,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9921 states. [2021-11-02 14:31:13,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9921 to 6131. [2021-11-02 14:31:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6131 states, 6009 states have (on average 1.3736062572807455) internal successors, (8254), 6044 states have internal predecessors, (8254), 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) [2021-11-02 14:31:13,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6131 states to 6131 states and 8531 transitions. [2021-11-02 14:31:13,514 INFO L78 Accepts]: Start accepts. Automaton has 6131 states and 8531 transitions. Word has length 62 [2021-11-02 14:31:13,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:31:13,515 INFO L470 AbstractCegarLoop]: Abstraction has 6131 states and 8531 transitions. [2021-11-02 14:31:13,515 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) [2021-11-02 14:31:13,515 INFO L276 IsEmpty]: Start isEmpty. Operand 6131 states and 8531 transitions. [2021-11-02 14:31:13,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 14:31:13,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:31:13,530 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] [2021-11-02 14:31:13,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-02 14:31:13,531 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)] === [2021-11-02 14:31:13,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:31:13,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1036858085, now seen corresponding path program 1 times [2021-11-02 14:31:13,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:31:13,531 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607270407] [2021-11-02 14:31:13,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:31:13,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:31:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:31:13,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-02 14:31:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:31:13,793 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:31:13,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:31:13,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607270407] [2021-11-02 14:31:13,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607270407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:31:13,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:31:13,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:31:13,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375237508] [2021-11-02 14:31:13,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:31:13,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:31:13,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:31:13,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:31:13,794 INFO L87 Difference]: Start difference. First operand 6131 states and 8531 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) [2021-11-02 14:31:15,844 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:31:34,896 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:31:45,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:31:47,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:31:48,155 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 [] [2021-11-02 14:32:33,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:32:33,117 INFO L93 Difference]: Finished difference Result 17551 states and 24938 transitions. [2021-11-02 14:32:33,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 14:32:33,117 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 [2021-11-02 14:32:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:32:33,153 INFO L225 Difference]: With dead ends: 17551 [2021-11-02 14:32:33,153 INFO L226 Difference]: Without dead ends: 11428 [2021-11-02 14:32:33,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 271.27ms TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-02 14:32:33,183 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 1854 mSDsluCounter, 9912 mSDsCounter, 0 mSdLazyCounter, 15960 mSolverCounterSat, 68 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 73708.24ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1864 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 16031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 125.98ms SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 15960 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 78261.64ms IncrementalHoareTripleChecker+Time [2021-11-02 14:32:33,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1864 Valid, 100 Invalid, 16031 Unknown, 0 Unchecked, 125.98ms Time], IncrementalHoareTripleChecker [68 Valid, 15960 Invalid, 3 Unknown, 0 Unchecked, 78261.64ms Time] [2021-11-02 14:32:33,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11428 states. [2021-11-02 14:32:33,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11428 to 10576. [2021-11-02 14:32:33,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10576 states, 10316 states have (on average 1.3663241566498643) internal successors, (14095), 10386 states have internal predecessors, (14095), 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) [2021-11-02 14:32:33,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10576 states to 10576 states and 14991 transitions. [2021-11-02 14:32:33,513 INFO L78 Accepts]: Start accepts. Automaton has 10576 states and 14991 transitions. Word has length 65 [2021-11-02 14:32:33,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:32:33,513 INFO L470 AbstractCegarLoop]: Abstraction has 10576 states and 14991 transitions. [2021-11-02 14:32:33,513 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) [2021-11-02 14:32:33,514 INFO L276 IsEmpty]: Start isEmpty. Operand 10576 states and 14991 transitions. [2021-11-02 14:32:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 14:32:33,514 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:32:33,514 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] [2021-11-02 14:32:33,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 14:32:33,515 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)] === [2021-11-02 14:32:33,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:32:33,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1052376803, now seen corresponding path program 1 times [2021-11-02 14:32:33,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:32:33,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070190188] [2021-11-02 14:32:33,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:32:33,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:32:33,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:32:33,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-02 14:32:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:32:33,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:32:33,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:32:33,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070190188] [2021-11-02 14:32:33,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070190188] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:32:33,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:32:33,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:32:33,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833795430] [2021-11-02 14:32:33,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:32:33,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:32:33,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:32:33,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:32:33,780 INFO L87 Difference]: Start difference. First operand 10576 states and 14991 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) [2021-11-02 14:32:35,826 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 [] [2021-11-02 14:32:57,937 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:33:07,190 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:33:08,494 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:33:30,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:33:30,827 INFO L93 Difference]: Finished difference Result 21493 states and 30344 transitions. [2021-11-02 14:33:30,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 14:33:30,827 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 [2021-11-02 14:33:30,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:33:30,870 INFO L225 Difference]: With dead ends: 21493 [2021-11-02 14:33:30,870 INFO L226 Difference]: Without dead ends: 10910 [2021-11-02 14:33:30,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 117.44ms TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-02 14:33:30,920 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 200 mSDsluCounter, 7580 mSDsCounter, 0 mSdLazyCounter, 10611 mSolverCounterSat, 17 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53273.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 10631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 68.95ms SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 10611 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56358.46ms IncrementalHoareTripleChecker+Time [2021-11-02 14:33:30,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 93 Invalid, 10631 Unknown, 0 Unchecked, 68.95ms Time], IncrementalHoareTripleChecker [17 Valid, 10611 Invalid, 3 Unknown, 0 Unchecked, 56358.46ms Time] [2021-11-02 14:33:30,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10910 states. [2021-11-02 14:33:31,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10910 to 10324. [2021-11-02 14:33:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10324 states, 10082 states have (on average 1.3657012497520333) internal successors, (13769), 10147 states have internal predecessors, (13769), 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) [2021-11-02 14:33:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10324 states to 10324 states and 14563 transitions. [2021-11-02 14:33:31,418 INFO L78 Accepts]: Start accepts. Automaton has 10324 states and 14563 transitions. Word has length 65 [2021-11-02 14:33:31,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:33:31,418 INFO L470 AbstractCegarLoop]: Abstraction has 10324 states and 14563 transitions. [2021-11-02 14:33:31,419 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) [2021-11-02 14:33:31,419 INFO L276 IsEmpty]: Start isEmpty. Operand 10324 states and 14563 transitions. [2021-11-02 14:33:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 14:33:31,420 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:33:31,420 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] [2021-11-02 14:33:31,420 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 14:33:31,420 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)] === [2021-11-02 14:33:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:33:31,421 INFO L85 PathProgramCache]: Analyzing trace with hash -181704258, now seen corresponding path program 1 times [2021-11-02 14:33:31,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:33:31,421 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11116141] [2021-11-02 14:33:31,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:33:31,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:33:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:33:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:33:31,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:33:31,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11116141] [2021-11-02 14:33:31,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11116141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:33:31,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:33:31,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 14:33:31,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608061363] [2021-11-02 14:33:31,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 14:33:31,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:33:31,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 14:33:31,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:33:31,680 INFO L87 Difference]: Start difference. First operand 10324 states and 14563 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) [2021-11-02 14:33:33,723 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 [] [2021-11-02 14:34:23,731 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:34:37,057 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:34:40,367 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 [] [2021-11-02 14:35:05,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:35:05,009 INFO L93 Difference]: Finished difference Result 42289 states and 60397 transitions. [2021-11-02 14:35:05,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 14:35:05,010 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 [2021-11-02 14:35:05,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:35:05,141 INFO L225 Difference]: With dead ends: 42289 [2021-11-02 14:35:05,141 INFO L226 Difference]: Without dead ends: 31992 [2021-11-02 14:35:05,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 143.68ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:35:05,223 INFO L933 BasicCegarLoop]: 53 mSDtfsCounter, 3486 mSDsluCounter, 11683 mSDsCounter, 0 mSdLazyCounter, 17705 mSolverCounterSat, 36 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85745.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3492 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 17744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 107.34ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 17705 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91388.60ms IncrementalHoareTripleChecker+Time [2021-11-02 14:35:05,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3492 Valid, 188 Invalid, 17744 Unknown, 0 Unchecked, 107.34ms Time], IncrementalHoareTripleChecker [36 Valid, 17705 Invalid, 3 Unknown, 0 Unchecked, 91388.60ms Time] [2021-11-02 14:35:05,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31992 states. [2021-11-02 14:35:05,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31992 to 10348. [2021-11-02 14:35:05,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10348 states, 10106 states have (on average 1.3648327726103304) internal successors, (13793), 10171 states have internal predecessors, (13793), 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) [2021-11-02 14:35:05,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10348 states to 10348 states and 14587 transitions. [2021-11-02 14:35:05,752 INFO L78 Accepts]: Start accepts. Automaton has 10348 states and 14587 transitions. Word has length 66 [2021-11-02 14:35:05,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:35:05,752 INFO L470 AbstractCegarLoop]: Abstraction has 10348 states and 14587 transitions. [2021-11-02 14:35:05,753 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) [2021-11-02 14:35:05,753 INFO L276 IsEmpty]: Start isEmpty. Operand 10348 states and 14587 transitions. [2021-11-02 14:35:05,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 14:35:05,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:35:05,754 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] [2021-11-02 14:35:05,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 14:35:05,754 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)] === [2021-11-02 14:35:05,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:35:05,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1202772612, now seen corresponding path program 1 times [2021-11-02 14:35:05,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:35:05,755 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166924992] [2021-11-02 14:35:05,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:35:05,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:35:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:35:06,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:35:06,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:35:06,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166924992] [2021-11-02 14:35:06,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166924992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:35:06,025 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:35:06,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-02 14:35:06,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970519094] [2021-11-02 14:35:06,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:35:06,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:35:06,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:35:06,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:35:06,028 INFO L87 Difference]: Start difference. First operand 10348 states and 14587 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) [2021-11-02 14:35:08,080 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 [] [2021-11-02 14:35:26,440 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:35:31,509 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:35:34,131 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:35:35,314 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:35:41,264 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:35:45,668 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:35:59,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:35:59,335 INFO L93 Difference]: Finished difference Result 15379 states and 21909 transitions. [2021-11-02 14:35:59,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:35:59,336 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 [2021-11-02 14:35:59,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:35:59,388 INFO L225 Difference]: With dead ends: 15379 [2021-11-02 14:35:59,388 INFO L226 Difference]: Without dead ends: 15366 [2021-11-02 14:35:59,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.02ms TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:35:59,400 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 3685 mSDsluCounter, 4273 mSDsCounter, 0 mSdLazyCounter, 8190 mSolverCounterSat, 14 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 49597.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3685 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 8208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.82ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 8190 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52509.25ms IncrementalHoareTripleChecker+Time [2021-11-02 14:35:59,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3685 Valid, 113 Invalid, 8208 Unknown, 0 Unchecked, 46.82ms Time], IncrementalHoareTripleChecker [14 Valid, 8190 Invalid, 4 Unknown, 0 Unchecked, 52509.25ms Time] [2021-11-02 14:35:59,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15366 states. [2021-11-02 14:35:59,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15366 to 15306. [2021-11-02 14:35:59,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15306 states, 14944 states have (on average 1.363222698072805) internal successors, (20372), 15041 states have internal predecessors, (20372), 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) [2021-11-02 14:35:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15306 states to 15306 states and 21823 transitions. [2021-11-02 14:35:59,907 INFO L78 Accepts]: Start accepts. Automaton has 15306 states and 21823 transitions. Word has length 66 [2021-11-02 14:35:59,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:35:59,908 INFO L470 AbstractCegarLoop]: Abstraction has 15306 states and 21823 transitions. [2021-11-02 14:35:59,908 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) [2021-11-02 14:35:59,909 INFO L276 IsEmpty]: Start isEmpty. Operand 15306 states and 21823 transitions. [2021-11-02 14:35:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-02 14:35:59,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:35:59,914 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] [2021-11-02 14:35:59,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 14:35:59,915 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)] === [2021-11-02 14:35:59,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:35:59,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1507239484, now seen corresponding path program 1 times [2021-11-02 14:35:59,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:35:59,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249092562] [2021-11-02 14:35:59,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:35:59,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:35:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:36:00,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:36:00,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:36:00,113 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249092562] [2021-11-02 14:36:00,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249092562] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:36:00,113 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:36:00,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:36:00,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936785096] [2021-11-02 14:36:00,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:36:00,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:36:00,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:36:00,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:36:00,114 INFO L87 Difference]: Start difference. First operand 15306 states and 21823 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) [2021-11-02 14:36:02,160 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:36:17,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:36:22,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:36:24,428 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:36:25,824 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:36:28,015 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:36:29,951 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 [] [2021-11-02 14:36:41,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:36:41,757 INFO L93 Difference]: Finished difference Result 33549 states and 48610 transitions. [2021-11-02 14:36:41,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:36:41,758 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 [2021-11-02 14:36:41,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:36:41,830 INFO L225 Difference]: With dead ends: 33549 [2021-11-02 14:36:41,831 INFO L226 Difference]: Without dead ends: 18270 [2021-11-02 14:36:41,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.77ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 14:36:41,939 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 775 mSDsluCounter, 4235 mSDsCounter, 0 mSdLazyCounter, 6305 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38239.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 6311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.14ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6305 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 40560.30ms IncrementalHoareTripleChecker+Time [2021-11-02 14:36:41,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [777 Valid, 79 Invalid, 6311 Unknown, 0 Unchecked, 36.14ms Time], IncrementalHoareTripleChecker [2 Valid, 6305 Invalid, 4 Unknown, 0 Unchecked, 40560.30ms Time] [2021-11-02 14:36:41,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18270 states. [2021-11-02 14:36:42,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18270 to 12735. [2021-11-02 14:36:42,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12735 states, 12433 states have (on average 1.3618595672806242) internal successors, (16932), 12515 states have internal predecessors, (16932), 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) [2021-11-02 14:36:42,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12735 states to 12735 states and 18082 transitions. [2021-11-02 14:36:42,648 INFO L78 Accepts]: Start accepts. Automaton has 12735 states and 18082 transitions. Word has length 66 [2021-11-02 14:36:42,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:36:42,648 INFO L470 AbstractCegarLoop]: Abstraction has 12735 states and 18082 transitions. [2021-11-02 14:36:42,648 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) [2021-11-02 14:36:42,649 INFO L276 IsEmpty]: Start isEmpty. Operand 12735 states and 18082 transitions. [2021-11-02 14:36:42,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-02 14:36:42,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:36:42,650 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] [2021-11-02 14:36:42,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-02 14:36:42,650 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)] === [2021-11-02 14:36:42,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:36:42,651 INFO L85 PathProgramCache]: Analyzing trace with hash 94855349, now seen corresponding path program 1 times [2021-11-02 14:36:42,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:36:42,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332072518] [2021-11-02 14:36:42,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:36:42,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:36:42,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:36:42,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-02 14:36:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:36:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:36:43,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:36:43,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332072518] [2021-11-02 14:36:43,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332072518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:36:43,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:36:43,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-02 14:36:43,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309768747] [2021-11-02 14:36:43,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-02 14:36:43,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:36:43,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-02 14:36:43,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:36:43,003 INFO L87 Difference]: Start difference. First operand 12735 states and 18082 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) [2021-11-02 14:36:45,046 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 [] [2021-11-02 14:37:17,034 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:37:27,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:37:30,538 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:37:47,908 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:38:04,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:38:04,614 INFO L93 Difference]: Finished difference Result 26570 states and 37531 transitions. [2021-11-02 14:38:04,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 14:38:04,615 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 [2021-11-02 14:38:04,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:38:04,701 INFO L225 Difference]: With dead ends: 26570 [2021-11-02 14:38:04,701 INFO L226 Difference]: Without dead ends: 26561 [2021-11-02 14:38:04,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 177.49ms TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-02 14:38:04,719 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 2274 mSDsluCounter, 10378 mSDsCounter, 0 mSdLazyCounter, 14861 mSolverCounterSat, 41 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 75612.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2284 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 14905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 107.31ms SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 14861 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 80241.61ms IncrementalHoareTripleChecker+Time [2021-11-02 14:38:04,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2284 Valid, 164 Invalid, 14905 Unknown, 0 Unchecked, 107.31ms Time], IncrementalHoareTripleChecker [41 Valid, 14861 Invalid, 3 Unknown, 0 Unchecked, 80241.61ms Time] [2021-11-02 14:38:04,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26561 states. [2021-11-02 14:38:05,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26561 to 24999. [2021-11-02 14:38:05,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24999 states, 24444 states have (on average 1.3627065946653576) internal successors, (33310), 24594 states have internal predecessors, (33310), 274 states have call successors, (274), 131 states have call predecessors, (274), 273 states have return successors, (1800), 325 states have call predecessors, (1800), 274 states have call successors, (1800) [2021-11-02 14:38:05,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24999 states to 24999 states and 35384 transitions. [2021-11-02 14:38:05,624 INFO L78 Accepts]: Start accepts. Automaton has 24999 states and 35384 transitions. Word has length 74 [2021-11-02 14:38:05,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:38:05,625 INFO L470 AbstractCegarLoop]: Abstraction has 24999 states and 35384 transitions. [2021-11-02 14:38:05,625 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) [2021-11-02 14:38:05,625 INFO L276 IsEmpty]: Start isEmpty. Operand 24999 states and 35384 transitions. [2021-11-02 14:38:05,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-02 14:38:05,628 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:38:05,628 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] [2021-11-02 14:38:05,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-02 14:38:05,629 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)] === [2021-11-02 14:38:05,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:38:05,629 INFO L85 PathProgramCache]: Analyzing trace with hash -795284500, now seen corresponding path program 1 times [2021-11-02 14:38:05,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:38:05,629 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479933389] [2021-11-02 14:38:05,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:38:05,630 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:38:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:38:05,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-02 14:38:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:38:05,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:38:05,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:38:05,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479933389] [2021-11-02 14:38:05,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479933389] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-02 14:38:05,949 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416135382] [2021-11-02 14:38:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:38:05,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 14:38:05,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 14:38:05,964 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) [2021-11-02 14:38:05,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 14:38:06,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:38:06,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 2344 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 14:38:06,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 14:38:07,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:38:07,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 14:38:07,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [416135382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:38:07,239 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-11-02 14:38:07,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-11-02 14:38:07,239 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906584689] [2021-11-02 14:38:07,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:38:07,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:38:07,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:38:07,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:38:07,240 INFO L87 Difference]: Start difference. First operand 24999 states and 35384 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) [2021-11-02 14:38:09,293 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:38:24,356 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:38:30,456 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:38:33,226 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:38:45,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 14:38:45,755 INFO L93 Difference]: Finished difference Result 40248 states and 56968 transitions. [2021-11-02 14:38:45,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 14:38:45,756 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 [2021-11-02 14:38:45,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 14:38:45,836 INFO L225 Difference]: With dead ends: 40248 [2021-11-02 14:38:45,837 INFO L226 Difference]: Without dead ends: 24999 [2021-11-02 14:38:45,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 82.09ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 14:38:45,902 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 24 mSDsluCounter, 4181 mSDsCounter, 0 mSdLazyCounter, 6241 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35406.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 6247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.24ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6241 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37488.52ms IncrementalHoareTripleChecker+Time [2021-11-02 14:38:45,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 68 Invalid, 6247 Unknown, 0 Unchecked, 33.24ms Time], IncrementalHoareTripleChecker [3 Valid, 6241 Invalid, 3 Unknown, 0 Unchecked, 37488.52ms Time] [2021-11-02 14:38:45,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24999 states. [2021-11-02 14:38:46,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24999 to 24999. [2021-11-02 14:38:46,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24999 states, 24444 states have (on average 1.3623384061528392) internal successors, (33301), 24594 states have internal predecessors, (33301), 274 states have call successors, (274), 131 states have call predecessors, (274), 273 states have return successors, (1800), 325 states have call predecessors, (1800), 274 states have call successors, (1800) [2021-11-02 14:38:46,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24999 states to 24999 states and 35375 transitions. [2021-11-02 14:38:46,924 INFO L78 Accepts]: Start accepts. Automaton has 24999 states and 35375 transitions. Word has length 78 [2021-11-02 14:38:46,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 14:38:46,925 INFO L470 AbstractCegarLoop]: Abstraction has 24999 states and 35375 transitions. [2021-11-02 14:38:46,925 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) [2021-11-02 14:38:46,925 INFO L276 IsEmpty]: Start isEmpty. Operand 24999 states and 35375 transitions. [2021-11-02 14:38:46,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-02 14:38:46,927 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 14:38:46,927 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] [2021-11-02 14:38:46,961 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-02 14:38:47,147 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 [2021-11-02 14:38:47,147 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)] === [2021-11-02 14:38:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 14:38:47,148 INFO L85 PathProgramCache]: Analyzing trace with hash -483282857, now seen corresponding path program 1 times [2021-11-02 14:38:47,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 14:38:47,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724987593] [2021-11-02 14:38:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 14:38:47,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 14:38:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 14:38:47,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 14:38:47,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 14:38:47,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724987593] [2021-11-02 14:38:47,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724987593] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 14:38:47,444 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 14:38:47,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 14:38:47,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364304132] [2021-11-02 14:38:47,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 14:38:47,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 14:38:47,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 14:38:47,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 14:38:47,445 INFO L87 Difference]: Start difference. First operand 24999 states and 35375 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) [2021-11-02 14:38:49,492 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 14:39:07,124 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] Killed by 15