./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 fcb8e130 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-dev-fcb8e13 [2021-11-22 20:56:01,515 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-22 20:56:01,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-22 20:56:01,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-22 20:56:01,551 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-22 20:56:01,554 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-22 20:56:01,555 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-22 20:56:01,557 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-22 20:56:01,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-22 20:56:01,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-22 20:56:01,561 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-22 20:56:01,562 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-22 20:56:01,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-22 20:56:01,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-22 20:56:01,566 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-22 20:56:01,571 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-22 20:56:01,571 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-22 20:56:01,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-22 20:56:01,573 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-22 20:56:01,577 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-22 20:56:01,578 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-22 20:56:01,579 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-22 20:56:01,580 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-22 20:56:01,581 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-22 20:56:01,585 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-22 20:56:01,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-22 20:56:01,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-22 20:56:01,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-22 20:56:01,589 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-22 20:56:01,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-22 20:56:01,590 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-22 20:56:01,590 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-22 20:56:01,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-22 20:56:01,592 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-22 20:56:01,593 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-22 20:56:01,593 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-22 20:56:01,594 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-22 20:56:01,594 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-22 20:56:01,594 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-22 20:56:01,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-22 20:56:01,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-22 20:56:01,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-22 20:56:01,621 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-22 20:56:01,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-22 20:56:01,622 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-22 20:56:01,622 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-22 20:56:01,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-22 20:56:01,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-22 20:56:01,623 INFO L138 SettingsManager]: * Use SBE=true [2021-11-22 20:56:01,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-22 20:56:01,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-22 20:56:01,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-22 20:56:01,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-22 20:56:01,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-22 20:56:01,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-22 20:56:01,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-22 20:56:01,625 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-22 20:56:01,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-22 20:56:01,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-22 20:56:01,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-22 20:56:01,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-22 20:56:01,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:56:01,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-22 20:56:01,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-22 20:56:01,626 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-22 20:56:01,626 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-22 20:56:01,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-22 20:56:01,627 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-22 20:56:01,627 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-22 20:56:01,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-22 20:56:01,627 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-22 20:56:01,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c6aa6e54aa03d80dc4005d195dc80cde5e772aed59b94df03248a4abb3fc0ec [2021-11-22 20:56:01,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-22 20:56:01,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-22 20:56:01,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-22 20:56:01,844 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-22 20:56:01,845 INFO L275 PluginConnector]: CDTParser initialized [2021-11-22 20:56:01,845 INFO L432 ainManager$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 [2021-11-22 20:56:01,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598fb683a/392cd7ac2494454d8093d04042c9cbd2/FLAGa6bd4f76a [2021-11-22 20:56:02,492 INFO L306 CDTParser]: Found 1 translation units. [2021-11-22 20:56:02,493 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 [2021-11-22 20:56:02,526 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598fb683a/392cd7ac2494454d8093d04042c9cbd2/FLAGa6bd4f76a [2021-11-22 20:56:02,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/598fb683a/392cd7ac2494454d8093d04042c9cbd2 [2021-11-22 20:56:02,917 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-22 20:56:02,918 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-22 20:56:02,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-22 20:56:02,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-22 20:56:02,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-22 20:56:02,928 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:56:02" (1/1) ... [2021-11-22 20:56:02,929 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7060b31a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:02, skipping insertion in model container [2021-11-22 20:56:02,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:56:02" (1/1) ... [2021-11-22 20:56:02,934 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-22 20:56:03,023 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-22 20:56:04,127 WARN L230 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] [2021-11-22 20:56:04,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:56:04,201 INFO L203 MainTranslator]: Completed pre-run [2021-11-22 20:56:04,440 WARN L230 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] [2021-11-22 20:56:04,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-22 20:56:04,518 INFO L208 MainTranslator]: Completed translation [2021-11-22 20:56:04,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:04 WrapperNode [2021-11-22 20:56:04,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-22 20:56:04,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-22 20:56:04,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-22 20:56:04,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-22 20:56:04,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:04" (1/1) ... [2021-11-22 20:56:04,580 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:04" (1/1) ... [2021-11-22 20:56:04,788 INFO L137 Inliner]: procedures = 177, calls = 1597, calls flagged for inlining = 300, calls inlined = 519, statements flattened = 10074 [2021-11-22 20:56:04,788 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-22 20:56:04,789 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-22 20:56:04,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-22 20:56:04,790 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-22 20:56:04,796 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:04" (1/1) ... [2021-11-22 20:56:04,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:04" (1/1) ... [2021-11-22 20:56:04,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:04" (1/1) ... [2021-11-22 20:56:04,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:04" (1/1) ... [2021-11-22 20:56:04,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:04" (1/1) ... [2021-11-22 20:56:04,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:04" (1/1) ... [2021-11-22 20:56:04,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:04" (1/1) ... [2021-11-22 20:56:05,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-22 20:56:05,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-22 20:56:05,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-22 20:56:05,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-22 20:56:05,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:04" (1/1) ... [2021-11-22 20:56:05,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-22 20:56:05,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:56:05,082 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) [2021-11-22 20:56:05,090 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 [2021-11-22 20:56:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-22 20:56:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-22 20:56:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-22 20:56:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-22 20:56:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2021-11-22 20:56:05,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2021-11-22 20:56:05,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-22 20:56:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-22 20:56:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-22 20:56:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-22 20:56:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-22 20:56:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 20:56:05,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-22 20:56:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-22 20:56:05,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-22 20:56:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-22 20:56:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2021-11-22 20:56:05,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2021-11-22 20:56:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2021-11-22 20:56:05,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2021-11-22 20:56:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-22 20:56:05,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-22 20:56:05,114 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2021-11-22 20:56:05,114 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2021-11-22 20:56:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-22 20:56:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-22 20:56:05,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-22 20:56:05,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-22 20:56:05,671 INFO L236 CfgBuilder]: Building ICFG [2021-11-22 20:56:05,672 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-22 20:56:05,703 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-22 20:56:08,239 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##623: assume !false; [2021-11-22 20:56:08,240 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##622: assume false; [2021-11-22 20:56:08,240 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-22 20:56:08,355 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2021-11-22 20:56:08,355 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2021-11-22 20:56:08,358 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-22 20:56:08,359 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-22 20:56:14,094 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##232: assume false; [2021-11-22 20:56:14,094 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##233: assume !false; [2021-11-22 20:56:14,095 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint L8653: ttusb_dec_start_feed_#res#1 := 0; [2021-11-22 20:56:14,095 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##194: assume !false; [2021-11-22 20:56:14,095 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##193: assume false; [2021-11-22 20:56:14,097 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-11-22 20:56:14,564 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2021-11-22 20:56:14,564 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2021-11-22 20:56:14,729 INFO L277 CfgBuilder]: Performing block encoding [2021-11-22 20:56:14,741 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-22 20:56:14,741 INFO L301 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-22 20:56:14,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:56:14 BoogieIcfgContainer [2021-11-22 20:56:14,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-22 20:56:14,746 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-22 20:56:14,746 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-22 20:56:14,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-22 20:56:14,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:56:02" (1/3) ... [2021-11-22 20:56:14,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4c02f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:56:14, skipping insertion in model container [2021-11-22 20:56:14,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:56:04" (2/3) ... [2021-11-22 20:56:14,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e4c02f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:56:14, skipping insertion in model container [2021-11-22 20:56:14,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:56:14" (3/3) ... [2021-11-22 20:56:14,751 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2021-11-22 20:56:14,754 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-22 20:56:14,755 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-22 20:56:14,791 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-22 20:56:14,796 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 [2021-11-22 20:56:14,796 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-22 20:56:14,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 1619 states, 1592 states have (on average 1.4924623115577889) internal successors, (2376), 1602 states have internal predecessors, (2376), 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) [2021-11-22 20:56:14,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-22 20:56:14,833 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:56:14,834 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:56:14,834 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)] === [2021-11-22 20:56:14,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:56:14,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1409688716, now seen corresponding path program 1 times [2021-11-22 20:56:14,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:56:14,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776195083] [2021-11-22 20:56:14,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:56:14,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:56:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:56:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:56:15,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:56:15,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776195083] [2021-11-22 20:56:15,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776195083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:56:15,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:56:15,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 20:56:15,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824286152] [2021-11-22 20:56:15,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:56:15,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 20:56:15,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:56:15,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 20:56:15,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:56:15,368 INFO L87 Difference]: Start difference. First operand has 1619 states, 1592 states have (on average 1.4924623115577889) internal successors, (2376), 1602 states have internal predecessors, (2376), 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 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) [2021-11-22 20:56:15,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:56:15,605 INFO L93 Difference]: Finished difference Result 4805 states and 7180 transitions. [2021-11-22 20:56:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 20:56:15,607 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 [2021-11-22 20:56:15,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:56:15,633 INFO L225 Difference]: With dead ends: 4805 [2021-11-22 20:56:15,633 INFO L226 Difference]: Without dead ends: 3166 [2021-11-22 20:56:15,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:56:15,650 INFO L933 BasicCegarLoop]: 2202 mSDtfsCounter, 2175 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2175 SdHoareTripleChecker+Valid, 4377 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:56:15,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2175 Valid, 4377 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:56:15,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3166 states. [2021-11-22 20:56:15,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3166 to 3154. [2021-11-22 20:56:15,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3154 states, 3110 states have (on average 1.372347266881029) internal successors, (4268), 3121 states have internal predecessors, (4268), 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) [2021-11-22 20:56:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 4328 transitions. [2021-11-22 20:56:15,788 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 4328 transitions. Word has length 11 [2021-11-22 20:56:15,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:56:15,789 INFO L470 AbstractCegarLoop]: Abstraction has 3154 states and 4328 transitions. [2021-11-22 20:56:15,789 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) [2021-11-22 20:56:15,789 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 4328 transitions. [2021-11-22 20:56:15,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-22 20:56:15,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:56:15,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:56:15,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-22 20:56:15,790 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:56:15,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:56:15,792 INFO L85 PathProgramCache]: Analyzing trace with hash 750681136, now seen corresponding path program 1 times [2021-11-22 20:56:15,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:56:15,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799722281] [2021-11-22 20:56:15,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:56:15,794 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:56:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:56:15,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:56:15,967 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:56:15,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799722281] [2021-11-22 20:56:15,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799722281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:56:15,968 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:56:15,968 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-22 20:56:15,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183649465] [2021-11-22 20:56:15,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:56:15,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 20:56:15,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:56:15,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 20:56:15,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:56:15,975 INFO L87 Difference]: Start difference. First operand 3154 states and 4328 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-22 20:56:16,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:56:16,131 INFO L93 Difference]: Finished difference Result 9442 states and 13033 transitions. [2021-11-22 20:56:16,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-22 20:56:16,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-22 20:56:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:56:16,160 INFO L225 Difference]: With dead ends: 9442 [2021-11-22 20:56:16,161 INFO L226 Difference]: Without dead ends: 6290 [2021-11-22 20:56:16,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 20:56:16,180 INFO L933 BasicCegarLoop]: 2183 mSDtfsCounter, 2158 mSDsluCounter, 2170 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 4353 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:56:16,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2158 Valid, 4353 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:56:16,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6290 states. [2021-11-22 20:56:16,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6290 to 6270. [2021-11-22 20:56:16,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6270 states, 6190 states have (on average 1.372859450726979) internal successors, (8498), 6205 states have internal predecessors, (8498), 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) [2021-11-22 20:56:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6270 states to 6270 states and 8654 transitions. [2021-11-22 20:56:16,411 INFO L78 Accepts]: Start accepts. Automaton has 6270 states and 8654 transitions. Word has length 12 [2021-11-22 20:56:16,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:56:16,412 INFO L470 AbstractCegarLoop]: Abstraction has 6270 states and 8654 transitions. [2021-11-22 20:56:16,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-22 20:56:16,412 INFO L276 IsEmpty]: Start isEmpty. Operand 6270 states and 8654 transitions. [2021-11-22 20:56:16,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-22 20:56:16,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:56:16,414 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] [2021-11-22 20:56:16,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-22 20:56:16,414 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:56:16,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:56:16,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1642083600, now seen corresponding path program 1 times [2021-11-22 20:56:16,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:56:16,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224967334] [2021-11-22 20:56:16,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:56:16,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:56:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:56:16,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:56:16,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:56:16,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224967334] [2021-11-22 20:56:16,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224967334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:56:16,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:56:16,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:56:16,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945152480] [2021-11-22 20:56:16,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:56:16,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:56:16,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:56:16,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:56:16,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:56:16,627 INFO L87 Difference]: Start difference. First operand 6270 states and 8654 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2021-11-22 20:56:16,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:56:16,852 INFO L93 Difference]: Finished difference Result 12664 states and 17490 transitions. [2021-11-22 20:56:16,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 20:56:16,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 45 [2021-11-22 20:56:16,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:56:16,878 INFO L225 Difference]: With dead ends: 12664 [2021-11-22 20:56:16,878 INFO L226 Difference]: Without dead ends: 6400 [2021-11-22 20:56:16,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:56:16,907 INFO L933 BasicCegarLoop]: 2181 mSDtfsCounter, 57 mSDsluCounter, 6468 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 8649 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:56:16,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 8649 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:56:16,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6400 states. [2021-11-22 20:56:17,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6400 to 6341. [2021-11-22 20:56:17,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6341 states, 6261 states have (on average 1.3734227759143907) internal successors, (8599), 6276 states have internal predecessors, (8599), 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) [2021-11-22 20:56:17,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6341 states to 6341 states and 8755 transitions. [2021-11-22 20:56:17,068 INFO L78 Accepts]: Start accepts. Automaton has 6341 states and 8755 transitions. Word has length 45 [2021-11-22 20:56:17,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:56:17,069 INFO L470 AbstractCegarLoop]: Abstraction has 6341 states and 8755 transitions. [2021-11-22 20:56:17,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2021-11-22 20:56:17,070 INFO L276 IsEmpty]: Start isEmpty. Operand 6341 states and 8755 transitions. [2021-11-22 20:56:17,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 20:56:17,077 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:56:17,077 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:56:17,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-22 20:56:17,077 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)] === [2021-11-22 20:56:17,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:56:17,078 INFO L85 PathProgramCache]: Analyzing trace with hash 848503672, now seen corresponding path program 1 times [2021-11-22 20:56:17,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:56:17,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562289110] [2021-11-22 20:56:17,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:56:17,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:56:17,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:56:17,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 20:56:17,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:56:17,365 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:56:17,365 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:56:17,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562289110] [2021-11-22 20:56:17,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562289110] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:56:17,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:56:17,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:56:17,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682386453] [2021-11-22 20:56:17,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:56:17,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:56:17,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:56:17,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:56:17,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:56:17,367 INFO L87 Difference]: Start difference. First operand 6341 states and 8755 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 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) [2021-11-22 20:56:22,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:56:24,817 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:56:34,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:56:34,565 INFO L93 Difference]: Finished difference Result 18478 states and 25924 transitions. [2021-11-22 20:56:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-22 20:56:34,566 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 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 67 [2021-11-22 20:56:34,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:56:34,628 INFO L225 Difference]: With dead ends: 18478 [2021-11-22 20:56:34,628 INFO L226 Difference]: Without dead ends: 12145 [2021-11-22 20:56:34,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-22 20:56:34,672 INFO L933 BasicCegarLoop]: 3321 mSDtfsCounter, 2084 mSDsluCounter, 10024 mSDsCounter, 0 mSdLazyCounter, 2795 mSolverCounterSat, 85 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2093 SdHoareTripleChecker+Valid, 13345 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 2795 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:56:34,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2093 Valid, 13345 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 2795 Invalid, 1 Unknown, 0 Unchecked, 16.7s Time] [2021-11-22 20:56:34,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12145 states. [2021-11-22 20:56:34,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12145 to 11212. [2021-11-22 20:56:34,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11212 states, 10971 states have (on average 1.3595843587640142) internal successors, (14916), 11035 states have internal predecessors, (14916), 119 states have call successors, (119), 52 states have call predecessors, (119), 114 states have return successors, (688), 148 states have call predecessors, (688), 119 states have call successors, (688) [2021-11-22 20:56:35,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11212 states to 11212 states and 15723 transitions. [2021-11-22 20:56:35,006 INFO L78 Accepts]: Start accepts. Automaton has 11212 states and 15723 transitions. Word has length 67 [2021-11-22 20:56:35,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:56:35,006 INFO L470 AbstractCegarLoop]: Abstraction has 11212 states and 15723 transitions. [2021-11-22 20:56:35,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 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) [2021-11-22 20:56:35,007 INFO L276 IsEmpty]: Start isEmpty. Operand 11212 states and 15723 transitions. [2021-11-22 20:56:35,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-22 20:56:35,008 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:56:35,009 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:56:35,011 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-22 20:56:35,011 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:56:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:56:35,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1180082438, now seen corresponding path program 1 times [2021-11-22 20:56:35,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:56:35,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665433607] [2021-11-22 20:56:35,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:56:35,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:56:35,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:56:35,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 20:56:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:56:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 20:56:35,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:56:35,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665433607] [2021-11-22 20:56:35,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665433607] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:56:35,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:56:35,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:56:35,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291561504] [2021-11-22 20:56:35,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:56:35,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:56:35,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:56:35,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:56:35,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:56:35,349 INFO L87 Difference]: Start difference. First operand 11212 states and 15723 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 20:56:40,564 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:56:51,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:56:51,290 INFO L93 Difference]: Finished difference Result 23831 states and 33445 transitions. [2021-11-22 20:56:51,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:56:51,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 67 [2021-11-22 20:56:51,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:56:51,331 INFO L225 Difference]: With dead ends: 23831 [2021-11-22 20:56:51,332 INFO L226 Difference]: Without dead ends: 12627 [2021-11-22 20:56:51,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2021-11-22 20:56:51,372 INFO L933 BasicCegarLoop]: 2141 mSDtfsCounter, 793 mSDsluCounter, 6736 mSDsCounter, 0 mSdLazyCounter, 1968 mSolverCounterSat, 78 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 8877 SdHoareTripleChecker+Invalid, 2047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1968 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2021-11-22 20:56:51,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 8877 Invalid, 2047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1968 Invalid, 1 Unknown, 0 Unchecked, 15.5s Time] [2021-11-22 20:56:51,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12627 states. [2021-11-22 20:56:51,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12627 to 11440. [2021-11-22 20:56:51,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11440 states, 11171 states have (on average 1.3578909676841822) internal successors, (15169), 11233 states have internal predecessors, (15169), 130 states have call successors, (130), 57 states have call predecessors, (130), 131 states have return successors, (768), 171 states have call predecessors, (768), 130 states have call successors, (768) [2021-11-22 20:56:51,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11440 states to 11440 states and 16067 transitions. [2021-11-22 20:56:51,655 INFO L78 Accepts]: Start accepts. Automaton has 11440 states and 16067 transitions. Word has length 67 [2021-11-22 20:56:51,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:56:51,657 INFO L470 AbstractCegarLoop]: Abstraction has 11440 states and 16067 transitions. [2021-11-22 20:56:51,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 20:56:51,657 INFO L276 IsEmpty]: Start isEmpty. Operand 11440 states and 16067 transitions. [2021-11-22 20:56:51,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 20:56:51,659 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:56:51,659 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] [2021-11-22 20:56:51,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-22 20:56:51,659 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:56:51,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:56:51,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1359662928, now seen corresponding path program 1 times [2021-11-22 20:56:51,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:56:51,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217566473] [2021-11-22 20:56:51,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:56:51,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:56:51,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:56:51,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:56:51,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:56:51,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217566473] [2021-11-22 20:56:51,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217566473] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:56:51,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:56:51,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-22 20:56:51,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279404501] [2021-11-22 20:56:51,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:56:51,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-22 20:56:51,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:56:51,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-22 20:56:51,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:56:51,923 INFO L87 Difference]: Start difference. First operand 11440 states and 16067 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2021-11-22 20:56:52,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:56:52,575 INFO L93 Difference]: Finished difference Result 29388 states and 41998 transitions. [2021-11-22 20:56:52,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-22 20:56:52,575 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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 68 [2021-11-22 20:56:52,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:56:52,640 INFO L225 Difference]: With dead ends: 29388 [2021-11-22 20:56:52,640 INFO L226 Difference]: Without dead ends: 18174 [2021-11-22 20:56:52,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2021-11-22 20:56:52,708 INFO L933 BasicCegarLoop]: 2647 mSDtfsCounter, 2739 mSDsluCounter, 12007 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2740 SdHoareTripleChecker+Valid, 14654 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:56:52,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2740 Valid, 14654 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:56:52,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18174 states. [2021-11-22 20:56:53,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18174 to 11465. [2021-11-22 20:56:53,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11465 states, 11196 states have (on average 1.356734548052876) internal successors, (15190), 11258 states have internal predecessors, (15190), 130 states have call successors, (130), 57 states have call predecessors, (130), 131 states have return successors, (768), 171 states have call predecessors, (768), 130 states have call successors, (768) [2021-11-22 20:56:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11465 states to 11465 states and 16088 transitions. [2021-11-22 20:56:53,176 INFO L78 Accepts]: Start accepts. Automaton has 11465 states and 16088 transitions. Word has length 68 [2021-11-22 20:56:53,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:56:53,177 INFO L470 AbstractCegarLoop]: Abstraction has 11465 states and 16088 transitions. [2021-11-22 20:56:53,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 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) [2021-11-22 20:56:53,178 INFO L276 IsEmpty]: Start isEmpty. Operand 11465 states and 16088 transitions. [2021-11-22 20:56:53,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 20:56:53,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:56:53,179 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] [2021-11-22 20:56:53,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-22 20:56:53,179 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:56:53,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:56:53,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1375181646, now seen corresponding path program 1 times [2021-11-22 20:56:53,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:56:53,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422099660] [2021-11-22 20:56:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:56:53,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:56:53,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:56:53,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:56:53,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:56:53,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422099660] [2021-11-22 20:56:53,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422099660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:56:53,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:56:53,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:56:53,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912883752] [2021-11-22 20:56:53,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:56:53,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:56:53,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:56:53,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:56:53,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:56:53,360 INFO L87 Difference]: Start difference. First operand 11465 states and 16088 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2021-11-22 20:56:53,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:56:53,718 INFO L93 Difference]: Finished difference Result 23250 states and 33040 transitions. [2021-11-22 20:56:53,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:56:53,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 68 [2021-11-22 20:56:53,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:56:53,756 INFO L225 Difference]: With dead ends: 23250 [2021-11-22 20:56:53,756 INFO L226 Difference]: Without dead ends: 12016 [2021-11-22 20:56:53,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:56:53,815 INFO L933 BasicCegarLoop]: 2197 mSDtfsCounter, 793 mSDsluCounter, 4361 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 6558 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:56:53,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 6558 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:56:53,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12016 states. [2021-11-22 20:56:54,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12016 to 8635. [2021-11-22 20:56:54,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8635 states, 8430 states have (on average 1.355753262158956) internal successors, (11429), 8478 states have internal predecessors, (11429), 99 states have call successors, (99), 44 states have call predecessors, (99), 98 states have return successors, (530), 129 states have call predecessors, (530), 99 states have call successors, (530) [2021-11-22 20:56:54,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8635 states to 8635 states and 12058 transitions. [2021-11-22 20:56:54,181 INFO L78 Accepts]: Start accepts. Automaton has 8635 states and 12058 transitions. Word has length 68 [2021-11-22 20:56:54,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:56:54,181 INFO L470 AbstractCegarLoop]: Abstraction has 8635 states and 12058 transitions. [2021-11-22 20:56:54,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2021-11-22 20:56:54,182 INFO L276 IsEmpty]: Start isEmpty. Operand 8635 states and 12058 transitions. [2021-11-22 20:56:54,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 20:56:54,182 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:56:54,183 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] [2021-11-22 20:56:54,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-22 20:56:54,183 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:56:54,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:56:54,183 INFO L85 PathProgramCache]: Analyzing trace with hash 114754930, now seen corresponding path program 1 times [2021-11-22 20:56:54,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:56:54,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084319115] [2021-11-22 20:56:54,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:56:54,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:56:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:56:54,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 20:56:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:56:54,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:56:54,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:56:54,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084319115] [2021-11-22 20:56:54,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084319115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:56:54,400 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:56:54,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:56:54,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996843773] [2021-11-22 20:56:54,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:56:54,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:56:54,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:56:54,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:56:54,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:56:54,401 INFO L87 Difference]: Start difference. First operand 8635 states and 12058 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-11-22 20:56:59,227 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:57:01,500 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:57:04,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:57:04,774 INFO L93 Difference]: Finished difference Result 35331 states and 49929 transitions. [2021-11-22 20:57:04,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 20:57:04,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 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 68 [2021-11-22 20:57:04,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:57:04,866 INFO L225 Difference]: With dead ends: 35331 [2021-11-22 20:57:04,866 INFO L226 Difference]: Without dead ends: 29653 [2021-11-22 20:57:04,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-22 20:57:04,912 INFO L933 BasicCegarLoop]: 2829 mSDtfsCounter, 6201 mSDsluCounter, 10290 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 87 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6213 SdHoareTripleChecker+Valid, 13119 SdHoareTripleChecker+Invalid, 1523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:57:04,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6213 Valid, 13119 Invalid, 1523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1435 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2021-11-22 20:57:04,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29653 states. [2021-11-22 20:57:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29653 to 8671. [2021-11-22 20:57:05,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8671 states, 8466 states have (on average 1.3542404913772739) internal successors, (11465), 8514 states have internal predecessors, (11465), 99 states have call successors, (99), 44 states have call predecessors, (99), 98 states have return successors, (530), 129 states have call predecessors, (530), 99 states have call successors, (530) [2021-11-22 20:57:05,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8671 states to 8671 states and 12094 transitions. [2021-11-22 20:57:05,368 INFO L78 Accepts]: Start accepts. Automaton has 8671 states and 12094 transitions. Word has length 68 [2021-11-22 20:57:05,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:57:05,368 INFO L470 AbstractCegarLoop]: Abstraction has 8671 states and 12094 transitions. [2021-11-22 20:57:05,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-11-22 20:57:05,369 INFO L276 IsEmpty]: Start isEmpty. Operand 8671 states and 12094 transitions. [2021-11-22 20:57:05,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 20:57:05,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:57:05,370 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] [2021-11-22 20:57:05,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-22 20:57:05,370 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:57:05,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:57:05,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1574188812, now seen corresponding path program 1 times [2021-11-22 20:57:05,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:57:05,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792585789] [2021-11-22 20:57:05,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:57:05,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:57:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:57:05,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 20:57:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:57:05,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:57:05,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:57:05,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792585789] [2021-11-22 20:57:05,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792585789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:57:05,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:57:05,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-22 20:57:05,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697594850] [2021-11-22 20:57:05,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:57:05,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-22 20:57:05,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:57:05,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-22 20:57:05,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:57:05,603 INFO L87 Difference]: Start difference. First operand 8671 states and 12094 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 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) [2021-11-22 20:57:10,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:57:15,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:57:15,614 INFO L93 Difference]: Finished difference Result 20734 states and 29295 transitions. [2021-11-22 20:57:15,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-22 20:57:15,615 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 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 68 [2021-11-22 20:57:15,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:57:15,658 INFO L225 Difference]: With dead ends: 20734 [2021-11-22 20:57:15,658 INFO L226 Difference]: Without dead ends: 15032 [2021-11-22 20:57:15,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2021-11-22 20:57:15,698 INFO L933 BasicCegarLoop]: 2938 mSDtfsCounter, 4460 mSDsluCounter, 12064 mSDsCounter, 0 mSdLazyCounter, 1632 mSolverCounterSat, 97 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4463 SdHoareTripleChecker+Valid, 15002 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1632 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:57:15,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4463 Valid, 15002 Invalid, 1730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1632 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2021-11-22 20:57:15,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15032 states. [2021-11-22 20:57:16,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15032 to 8671. [2021-11-22 20:57:16,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8671 states, 8466 states have (on average 1.3537680132293881) internal successors, (11461), 8514 states have internal predecessors, (11461), 99 states have call successors, (99), 44 states have call predecessors, (99), 98 states have return successors, (530), 129 states have call predecessors, (530), 99 states have call successors, (530) [2021-11-22 20:57:16,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8671 states to 8671 states and 12090 transitions. [2021-11-22 20:57:16,115 INFO L78 Accepts]: Start accepts. Automaton has 8671 states and 12090 transitions. Word has length 68 [2021-11-22 20:57:16,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:57:16,116 INFO L470 AbstractCegarLoop]: Abstraction has 8671 states and 12090 transitions. [2021-11-22 20:57:16,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 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) [2021-11-22 20:57:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 8671 states and 12090 transitions. [2021-11-22 20:57:16,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-22 20:57:16,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:57:16,121 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] [2021-11-22 20:57:16,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-22 20:57:16,121 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)] === [2021-11-22 20:57:16,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:57:16,121 INFO L85 PathProgramCache]: Analyzing trace with hash 209773554, now seen corresponding path program 1 times [2021-11-22 20:57:16,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:57:16,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46126376] [2021-11-22 20:57:16,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:57:16,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:57:16,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:57:16,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:57:16,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:57:16,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46126376] [2021-11-22 20:57:16,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46126376] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:57:16,307 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:57:16,307 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 20:57:16,307 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992184352] [2021-11-22 20:57:16,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:57:16,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:57:16,308 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:57:16,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:57:16,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:57:16,308 INFO L87 Difference]: Start difference. First operand 8671 states and 12090 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-22 20:57:16,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:57:16,871 INFO L93 Difference]: Finished difference Result 14360 states and 20274 transitions. [2021-11-22 20:57:16,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:57:16,871 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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 68 [2021-11-22 20:57:16,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:57:16,908 INFO L225 Difference]: With dead ends: 14360 [2021-11-22 20:57:16,909 INFO L226 Difference]: Without dead ends: 14347 [2021-11-22 20:57:16,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:57:16,919 INFO L933 BasicCegarLoop]: 4284 mSDtfsCounter, 4214 mSDsluCounter, 4282 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4214 SdHoareTripleChecker+Valid, 8566 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-22 20:57:16,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4214 Valid, 8566 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-22 20:57:16,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14347 states. [2021-11-22 20:57:17,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14347 to 14319. [2021-11-22 20:57:17,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14319 states, 13986 states have (on average 1.353925353925354) internal successors, (18936), 14062 states have internal predecessors, (18936), 161 states have call successors, (161), 70 states have call predecessors, (161), 164 states have return successors, (1124), 213 states have call predecessors, (1124), 161 states have call successors, (1124) [2021-11-22 20:57:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14319 states to 14319 states and 20221 transitions. [2021-11-22 20:57:17,422 INFO L78 Accepts]: Start accepts. Automaton has 14319 states and 20221 transitions. Word has length 68 [2021-11-22 20:57:17,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:57:17,422 INFO L470 AbstractCegarLoop]: Abstraction has 14319 states and 20221 transitions. [2021-11-22 20:57:17,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 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) [2021-11-22 20:57:17,423 INFO L276 IsEmpty]: Start isEmpty. Operand 14319 states and 20221 transitions. [2021-11-22 20:57:17,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-22 20:57:17,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:57:17,425 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:57:17,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-22 20:57:17,426 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:57:17,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:57:17,426 INFO L85 PathProgramCache]: Analyzing trace with hash 638664976, now seen corresponding path program 1 times [2021-11-22 20:57:17,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:57:17,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182528027] [2021-11-22 20:57:17,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:57:17,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:57:17,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:57:17,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 20:57:17,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:57:17,605 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 20:57:17,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:57:17,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182528027] [2021-11-22 20:57:17,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182528027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:57:17,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:57:17,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:57:17,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388910685] [2021-11-22 20:57:17,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:57:17,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:57:17,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:57:17,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:57:17,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:57:17,607 INFO L87 Difference]: Start difference. First operand 14319 states and 20221 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 20:57:22,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:57:33,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:57:33,426 INFO L93 Difference]: Finished difference Result 29959 states and 43195 transitions. [2021-11-22 20:57:33,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-22 20:57:33,426 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2021-11-22 20:57:33,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:57:33,482 INFO L225 Difference]: With dead ends: 29959 [2021-11-22 20:57:33,482 INFO L226 Difference]: Without dead ends: 15648 [2021-11-22 20:57:33,553 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-11-22 20:57:33,555 INFO L933 BasicCegarLoop]: 2209 mSDtfsCounter, 703 mSDsluCounter, 7054 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 9263 SdHoareTripleChecker+Invalid, 2229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:57:33,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [703 Valid, 9263 Invalid, 2229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2177 Invalid, 1 Unknown, 0 Unchecked, 15.1s Time] [2021-11-22 20:57:33,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15648 states. [2021-11-22 20:57:34,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15648 to 14319. [2021-11-22 20:57:34,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14319 states, 13986 states have (on average 1.3534963534963536) internal successors, (18930), 14062 states have internal predecessors, (18930), 161 states have call successors, (161), 70 states have call predecessors, (161), 164 states have return successors, (1124), 213 states have call predecessors, (1124), 161 states have call successors, (1124) [2021-11-22 20:57:34,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14319 states to 14319 states and 20215 transitions. [2021-11-22 20:57:34,144 INFO L78 Accepts]: Start accepts. Automaton has 14319 states and 20215 transitions. Word has length 74 [2021-11-22 20:57:34,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:57:34,144 INFO L470 AbstractCegarLoop]: Abstraction has 14319 states and 20215 transitions. [2021-11-22 20:57:34,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 20:57:34,145 INFO L276 IsEmpty]: Start isEmpty. Operand 14319 states and 20215 transitions. [2021-11-22 20:57:34,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-22 20:57:34,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:57:34,146 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:57:34,146 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-22 20:57:34,147 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:57:34,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:57:34,147 INFO L85 PathProgramCache]: Analyzing trace with hash 2024868370, now seen corresponding path program 1 times [2021-11-22 20:57:34,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:57:34,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511961382] [2021-11-22 20:57:34,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:57:34,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:57:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:57:34,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 20:57:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:57:34,338 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 20:57:34,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:57:34,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511961382] [2021-11-22 20:57:34,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511961382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:57:34,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:57:34,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:57:34,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412829649] [2021-11-22 20:57:34,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:57:34,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:57:34,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:57:34,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:57:34,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:57:34,340 INFO L87 Difference]: Start difference. First operand 14319 states and 20215 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 20:57:39,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:57:46,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:57:51,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:57:51,851 INFO L93 Difference]: Finished difference Result 33805 states and 50197 transitions. [2021-11-22 20:57:51,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-22 20:57:51,854 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2021-11-22 20:57:51,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:57:51,922 INFO L225 Difference]: With dead ends: 33805 [2021-11-22 20:57:51,922 INFO L226 Difference]: Without dead ends: 19494 [2021-11-22 20:57:52,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-22 20:57:52,008 INFO L933 BasicCegarLoop]: 2178 mSDtfsCounter, 695 mSDsluCounter, 7003 mSDsCounter, 0 mSdLazyCounter, 2125 mSolverCounterSat, 51 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 9181 SdHoareTripleChecker+Invalid, 2177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 2125 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:57:52,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [695 Valid, 9181 Invalid, 2177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 2125 Invalid, 1 Unknown, 0 Unchecked, 16.7s Time] [2021-11-22 20:57:52,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19494 states. [2021-11-22 20:57:52,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19494 to 17530. [2021-11-22 20:57:52,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17530 states, 16957 states have (on average 1.3426313616795424) internal successors, (22767), 17080 states have internal predecessors, (22767), 236 states have call successors, (236), 120 states have call predecessors, (236), 329 states have return successors, (2749), 367 states have call predecessors, (2749), 236 states have call successors, (2749) [2021-11-22 20:57:52,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17530 states to 17530 states and 25752 transitions. [2021-11-22 20:57:52,739 INFO L78 Accepts]: Start accepts. Automaton has 17530 states and 25752 transitions. Word has length 74 [2021-11-22 20:57:52,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:57:52,739 INFO L470 AbstractCegarLoop]: Abstraction has 17530 states and 25752 transitions. [2021-11-22 20:57:52,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 20:57:52,740 INFO L276 IsEmpty]: Start isEmpty. Operand 17530 states and 25752 transitions. [2021-11-22 20:57:52,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-22 20:57:52,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:57:52,741 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:57:52,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-22 20:57:52,741 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:57:52,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:57:52,741 INFO L85 PathProgramCache]: Analyzing trace with hash 745004692, now seen corresponding path program 1 times [2021-11-22 20:57:52,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:57:52,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031317235] [2021-11-22 20:57:52,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:57:52,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:57:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:57:52,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 20:57:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:57:52,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 20:57:52,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:57:52,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031317235] [2021-11-22 20:57:52,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031317235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:57:52,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:57:52,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:57:52,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264874916] [2021-11-22 20:57:52,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:57:52,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:57:52,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:57:52,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:57:52,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:57:52,916 INFO L87 Difference]: Start difference. First operand 17530 states and 25752 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 20:57:56,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:57:59,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:58:02,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:58:02,204 INFO L93 Difference]: Finished difference Result 36643 states and 55938 transitions. [2021-11-22 20:58:02,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:58:02,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 74 [2021-11-22 20:58:02,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:58:02,271 INFO L225 Difference]: With dead ends: 36643 [2021-11-22 20:58:02,271 INFO L226 Difference]: Without dead ends: 19121 [2021-11-22 20:58:02,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:58:02,371 INFO L933 BasicCegarLoop]: 2092 mSDtfsCounter, 204 mSDsluCounter, 3444 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 16 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 5536 SdHoareTripleChecker+Invalid, 884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-11-22 20:58:02,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 5536 Invalid, 884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 867 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-11-22 20:58:02,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19121 states. [2021-11-22 20:58:02,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19121 to 17582. [2021-11-22 20:58:02,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17582 states, 17009 states have (on average 1.3415838673643365) internal successors, (22819), 17132 states have internal predecessors, (22819), 236 states have call successors, (236), 120 states have call predecessors, (236), 329 states have return successors, (2749), 367 states have call predecessors, (2749), 236 states have call successors, (2749) [2021-11-22 20:58:03,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17582 states to 17582 states and 25804 transitions. [2021-11-22 20:58:03,080 INFO L78 Accepts]: Start accepts. Automaton has 17582 states and 25804 transitions. Word has length 74 [2021-11-22 20:58:03,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:58:03,080 INFO L470 AbstractCegarLoop]: Abstraction has 17582 states and 25804 transitions. [2021-11-22 20:58:03,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 20:58:03,081 INFO L276 IsEmpty]: Start isEmpty. Operand 17582 states and 25804 transitions. [2021-11-22 20:58:03,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 20:58:03,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:58:03,082 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:58:03,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-22 20:58:03,082 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:58:03,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:58:03,083 INFO L85 PathProgramCache]: Analyzing trace with hash -28116018, now seen corresponding path program 1 times [2021-11-22 20:58:03,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:58:03,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566173062] [2021-11-22 20:58:03,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:58:03,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:58:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:03,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 20:58:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:03,230 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 20:58:03,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:58:03,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566173062] [2021-11-22 20:58:03,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566173062] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:58:03,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372331117] [2021-11-22 20:58:03,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:58:03,231 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:58:03,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:58:03,233 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) [2021-11-22 20:58:03,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-22 20:58:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:04,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 2710 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 20:58:04,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:58:04,290 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-11-22 20:58:04,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:58:04,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372331117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:58:04,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 20:58:04,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-11-22 20:58:04,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795940134] [2021-11-22 20:58:04,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:58:04,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:58:04,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:58:04,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:58:04,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:58:04,292 INFO L87 Difference]: Start difference. First operand 17582 states and 25804 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 20:58:04,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:58:04,978 INFO L93 Difference]: Finished difference Result 35158 states and 51601 transitions. [2021-11-22 20:58:04,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:58:04,979 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (2), 1 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 78 [2021-11-22 20:58:04,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:58:05,050 INFO L225 Difference]: With dead ends: 35158 [2021-11-22 20:58:05,050 INFO L226 Difference]: Without dead ends: 17582 [2021-11-22 20:58:05,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:58:05,143 INFO L933 BasicCegarLoop]: 2171 mSDtfsCounter, 1 mSDsluCounter, 4337 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6508 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:58:05,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 6508 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:58:05,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17582 states. [2021-11-22 20:58:05,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17582 to 17582. [2021-11-22 20:58:05,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17582 states, 17009 states have (on average 1.3415250749603151) internal successors, (22818), 17132 states have internal predecessors, (22818), 236 states have call successors, (236), 120 states have call predecessors, (236), 329 states have return successors, (2749), 367 states have call predecessors, (2749), 236 states have call successors, (2749) [2021-11-22 20:58:05,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17582 states to 17582 states and 25803 transitions. [2021-11-22 20:58:05,960 INFO L78 Accepts]: Start accepts. Automaton has 17582 states and 25803 transitions. Word has length 78 [2021-11-22 20:58:05,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:58:05,960 INFO L470 AbstractCegarLoop]: Abstraction has 17582 states and 25803 transitions. [2021-11-22 20:58:05,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-22 20:58:05,961 INFO L276 IsEmpty]: Start isEmpty. Operand 17582 states and 25803 transitions. [2021-11-22 20:58:05,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-22 20:58:05,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:58:05,963 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:58:05,990 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-22 20:58:06,167 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 [2021-11-22 20:58:06,183 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:58:06,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:58:06,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1939158576, now seen corresponding path program 1 times [2021-11-22 20:58:06,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:58:06,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822452435] [2021-11-22 20:58:06,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:58:06,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:58:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 20:58:06,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:06,369 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-22 20:58:06,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:58:06,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822452435] [2021-11-22 20:58:06,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822452435] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:58:06,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758413095] [2021-11-22 20:58:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:58:06,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:58:06,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:58:06,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:58:06,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-22 20:58:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:07,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 2710 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-22 20:58:07,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:58:07,400 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-22 20:58:07,401 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:58:07,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758413095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:58:07,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 20:58:07,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-22 20:58:07,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440781618] [2021-11-22 20:58:07,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:58:07,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:58:07,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:58:07,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:58:07,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:58:07,402 INFO L87 Difference]: Start difference. First operand 17582 states and 25803 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 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) [2021-11-22 20:58:08,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:58:08,102 INFO L93 Difference]: Finished difference Result 34712 states and 50727 transitions. [2021-11-22 20:58:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:58:08,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 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 78 [2021-11-22 20:58:08,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:58:08,174 INFO L225 Difference]: With dead ends: 34712 [2021-11-22 20:58:08,174 INFO L226 Difference]: Without dead ends: 17116 [2021-11-22 20:58:08,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-22 20:58:08,273 INFO L933 BasicCegarLoop]: 2179 mSDtfsCounter, 10 mSDsluCounter, 6520 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 8699 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-22 20:58:08,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 8699 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-22 20:58:08,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17116 states. [2021-11-22 20:58:08,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17116 to 17054. [2021-11-22 20:58:08,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17054 states, 16502 states have (on average 1.3380196339837596) internal successors, (22080), 16627 states have internal predecessors, (22080), 220 states have call successors, (220), 116 states have call predecessors, (220), 324 states have return successors, (2517), 346 states have call predecessors, (2517), 220 states have call successors, (2517) [2021-11-22 20:58:09,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17054 states to 17054 states and 24817 transitions. [2021-11-22 20:58:09,086 INFO L78 Accepts]: Start accepts. Automaton has 17054 states and 24817 transitions. Word has length 78 [2021-11-22 20:58:09,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:58:09,086 INFO L470 AbstractCegarLoop]: Abstraction has 17054 states and 24817 transitions. [2021-11-22 20:58:09,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 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) [2021-11-22 20:58:09,087 INFO L276 IsEmpty]: Start isEmpty. Operand 17054 states and 24817 transitions. [2021-11-22 20:58:09,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-22 20:58:09,088 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:58:09,089 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] [2021-11-22 20:58:09,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-22 20:58:09,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-22 20:58:09,291 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:58:09,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:58:09,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1227844005, now seen corresponding path program 1 times [2021-11-22 20:58:09,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:58:09,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122267595] [2021-11-22 20:58:09,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:58:09,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:58:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:09,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 20:58:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:09,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:58:09,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:58:09,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122267595] [2021-11-22 20:58:09,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122267595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:58:09,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:58:09,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-22 20:58:09,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553667401] [2021-11-22 20:58:09,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:58:09,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-22 20:58:09,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:58:09,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-22 20:58:09,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:58:09,498 INFO L87 Difference]: Start difference. First operand 17054 states and 24817 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-11-22 20:58:13,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:58:18,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:58:18,945 INFO L93 Difference]: Finished difference Result 36024 states and 52264 transitions. [2021-11-22 20:58:18,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-22 20:58:18,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 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 80 [2021-11-22 20:58:18,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:58:19,041 INFO L225 Difference]: With dead ends: 36024 [2021-11-22 20:58:19,042 INFO L226 Difference]: Without dead ends: 36009 [2021-11-22 20:58:19,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-22 20:58:19,059 INFO L933 BasicCegarLoop]: 2110 mSDtfsCounter, 2490 mSDsluCounter, 7659 mSDsCounter, 0 mSdLazyCounter, 1060 mSolverCounterSat, 57 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2501 SdHoareTripleChecker+Valid, 9769 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1060 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-22 20:58:19,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2501 Valid, 9769 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1060 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-11-22 20:58:19,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36009 states. [2021-11-22 20:58:20,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36009 to 33116. [2021-11-22 20:58:20,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33116 states, 32046 states have (on average 1.337046745303626) internal successors, (42847), 32291 states have internal predecessors, (42847), 414 states have call successors, (414), 231 states have call predecessors, (414), 648 states have return successors, (5119), 665 states have call predecessors, (5119), 414 states have call successors, (5119) [2021-11-22 20:58:20,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33116 states to 33116 states and 48380 transitions. [2021-11-22 20:58:20,260 INFO L78 Accepts]: Start accepts. Automaton has 33116 states and 48380 transitions. Word has length 80 [2021-11-22 20:58:20,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:58:20,260 INFO L470 AbstractCegarLoop]: Abstraction has 33116 states and 48380 transitions. [2021-11-22 20:58:20,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-11-22 20:58:20,261 INFO L276 IsEmpty]: Start isEmpty. Operand 33116 states and 48380 transitions. [2021-11-22 20:58:20,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-22 20:58:20,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:58:20,263 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, 1, 1, 1, 1, 1, 1] [2021-11-22 20:58:20,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-22 20:58:20,263 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:58:20,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:58:20,263 INFO L85 PathProgramCache]: Analyzing trace with hash 903472580, now seen corresponding path program 1 times [2021-11-22 20:58:20,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:58:20,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352690638] [2021-11-22 20:58:20,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:58:20,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:58:20,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:20,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 20:58:20,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:20,453 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:58:20,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:58:20,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352690638] [2021-11-22 20:58:20,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352690638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:58:20,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [383877877] [2021-11-22 20:58:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:58:20,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:58:20,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:58:20,455 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:58:20,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-22 20:58:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:21,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 2930 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-22 20:58:21,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:58:21,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:58:21,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-22 20:58:21,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [383877877] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:58:21,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-22 20:58:21,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2021-11-22 20:58:21,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161116722] [2021-11-22 20:58:21,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:58:21,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:58:21,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:58:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:58:21,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:58:21,627 INFO L87 Difference]: Start difference. First operand 33116 states and 48380 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-11-22 20:58:22,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:58:22,918 INFO L93 Difference]: Finished difference Result 66205 states and 96726 transitions. [2021-11-22 20:58:22,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:58:22,919 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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 84 [2021-11-22 20:58:22,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:58:23,032 INFO L225 Difference]: With dead ends: 66205 [2021-11-22 20:58:23,032 INFO L226 Difference]: Without dead ends: 33071 [2021-11-22 20:58:23,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-22 20:58:23,183 INFO L933 BasicCegarLoop]: 2172 mSDtfsCounter, 27 mSDsluCounter, 4297 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 6469 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:58:23,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 6469 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:58:23,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33071 states. [2021-11-22 20:58:24,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33071 to 33071. [2021-11-22 20:58:24,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33071 states, 32001 states have (on average 1.3363332395862628) internal successors, (42764), 32246 states have internal predecessors, (42764), 414 states have call successors, (414), 231 states have call predecessors, (414), 648 states have return successors, (5119), 665 states have call predecessors, (5119), 414 states have call successors, (5119) [2021-11-22 20:58:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33071 states to 33071 states and 48297 transitions. [2021-11-22 20:58:24,392 INFO L78 Accepts]: Start accepts. Automaton has 33071 states and 48297 transitions. Word has length 84 [2021-11-22 20:58:24,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:58:24,393 INFO L470 AbstractCegarLoop]: Abstraction has 33071 states and 48297 transitions. [2021-11-22 20:58:24,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 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) [2021-11-22 20:58:24,393 INFO L276 IsEmpty]: Start isEmpty. Operand 33071 states and 48297 transitions. [2021-11-22 20:58:24,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-22 20:58:24,395 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:58:24,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:58:24,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-22 20:58:24,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:58:24,611 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:58:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:58:24,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1814602161, now seen corresponding path program 1 times [2021-11-22 20:58:24,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:58:24,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936722328] [2021-11-22 20:58:24,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:58:24,612 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:58:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:24,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:58:24,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:58:24,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936722328] [2021-11-22 20:58:24,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936722328] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:58:24,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:58:24,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:58:24,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122642429] [2021-11-22 20:58:24,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:58:24,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:58:24,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:58:24,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:58:24,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:58:24,778 INFO L87 Difference]: Start difference. First operand 33071 states and 48297 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-11-22 20:58:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:58:27,039 INFO L93 Difference]: Finished difference Result 76642 states and 116176 transitions. [2021-11-22 20:58:27,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-22 20:58:27,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 86 [2021-11-22 20:58:27,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:58:27,228 INFO L225 Difference]: With dead ends: 76642 [2021-11-22 20:58:27,228 INFO L226 Difference]: Without dead ends: 43598 [2021-11-22 20:58:27,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:58:27,539 INFO L933 BasicCegarLoop]: 2895 mSDtfsCounter, 1453 mSDsluCounter, 7235 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1453 SdHoareTripleChecker+Valid, 10130 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:58:27,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1453 Valid, 10130 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:58:27,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43598 states. [2021-11-22 20:58:28,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43598 to 33131. [2021-11-22 20:58:28,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33131 states, 32061 states have (on average 1.3357038146034121) internal successors, (42824), 32306 states have internal predecessors, (42824), 414 states have call successors, (414), 231 states have call predecessors, (414), 648 states have return successors, (5119), 665 states have call predecessors, (5119), 414 states have call successors, (5119) [2021-11-22 20:58:29,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33131 states to 33131 states and 48357 transitions. [2021-11-22 20:58:29,088 INFO L78 Accepts]: Start accepts. Automaton has 33131 states and 48357 transitions. Word has length 86 [2021-11-22 20:58:29,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:58:29,088 INFO L470 AbstractCegarLoop]: Abstraction has 33131 states and 48357 transitions. [2021-11-22 20:58:29,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-11-22 20:58:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 33131 states and 48357 transitions. [2021-11-22 20:58:29,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-22 20:58:29,091 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:58:29,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:58:29,091 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-22 20:58:29,091 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:58:29,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:58:29,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1606007809, now seen corresponding path program 1 times [2021-11-22 20:58:29,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:58:29,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052364902] [2021-11-22 20:58:29,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:58:29,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:58:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:29,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:58:29,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:58:29,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052364902] [2021-11-22 20:58:29,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052364902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:58:29,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:58:29,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-22 20:58:29,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227420612] [2021-11-22 20:58:29,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:58:29,258 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-22 20:58:29,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:58:29,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-22 20:58:29,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-22 20:58:29,259 INFO L87 Difference]: Start difference. First operand 33131 states and 48357 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-11-22 20:58:30,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:58:30,955 INFO L93 Difference]: Finished difference Result 66315 states and 101182 transitions. [2021-11-22 20:58:30,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-22 20:58:30,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 89 [2021-11-22 20:58:30,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:58:31,076 INFO L225 Difference]: With dead ends: 66315 [2021-11-22 20:58:31,077 INFO L226 Difference]: Without dead ends: 33211 [2021-11-22 20:58:31,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:58:31,291 INFO L933 BasicCegarLoop]: 2170 mSDtfsCounter, 5 mSDsluCounter, 4335 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 6505 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:58:31,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 6505 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:58:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33211 states. [2021-11-22 20:58:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33211 to 33171. [2021-11-22 20:58:32,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33171 states, 32101 states have (on average 1.335285505124451) internal successors, (42864), 32346 states have internal predecessors, (42864), 414 states have call successors, (414), 231 states have call predecessors, (414), 648 states have return successors, (5119), 665 states have call predecessors, (5119), 414 states have call successors, (5119) [2021-11-22 20:58:32,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33171 states to 33171 states and 48397 transitions. [2021-11-22 20:58:32,616 INFO L78 Accepts]: Start accepts. Automaton has 33171 states and 48397 transitions. Word has length 89 [2021-11-22 20:58:32,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:58:32,616 INFO L470 AbstractCegarLoop]: Abstraction has 33171 states and 48397 transitions. [2021-11-22 20:58:32,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-11-22 20:58:32,616 INFO L276 IsEmpty]: Start isEmpty. Operand 33171 states and 48397 transitions. [2021-11-22 20:58:32,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-22 20:58:32,618 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:58:32,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:58:32,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-22 20:58:32,619 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:58:32,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:58:32,619 INFO L85 PathProgramCache]: Analyzing trace with hash -471602814, now seen corresponding path program 1 times [2021-11-22 20:58:32,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:58:32,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473843078] [2021-11-22 20:58:32,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:58:32,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:58:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:32,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:58:32,920 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:58:32,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473843078] [2021-11-22 20:58:32,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473843078] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:58:32,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:58:32,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-22 20:58:32,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294424551] [2021-11-22 20:58:32,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:58:32,921 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-22 20:58:32,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:58:32,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-22 20:58:32,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-22 20:58:32,922 INFO L87 Difference]: Start difference. First operand 33171 states and 48397 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2021-11-22 20:58:35,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:58:35,600 INFO L93 Difference]: Finished difference Result 87429 states and 131867 transitions. [2021-11-22 20:58:35,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-22 20:58:35,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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 97 [2021-11-22 20:58:35,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:58:35,818 INFO L225 Difference]: With dead ends: 87429 [2021-11-22 20:58:35,818 INFO L226 Difference]: Without dead ends: 54285 [2021-11-22 20:58:36,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-22 20:58:36,245 INFO L933 BasicCegarLoop]: 2177 mSDtfsCounter, 2918 mSDsluCounter, 6976 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2920 SdHoareTripleChecker+Valid, 9153 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-22 20:58:36,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2920 Valid, 9153 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-22 20:58:36,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54285 states. [2021-11-22 20:58:37,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54285 to 33231. [2021-11-22 20:58:37,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33231 states, 32161 states have (on average 1.3346599919156743) internal successors, (42924), 32406 states have internal predecessors, (42924), 414 states have call successors, (414), 231 states have call predecessors, (414), 648 states have return successors, (5119), 665 states have call predecessors, (5119), 414 states have call successors, (5119) [2021-11-22 20:58:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33231 states to 33231 states and 48457 transitions. [2021-11-22 20:58:37,901 INFO L78 Accepts]: Start accepts. Automaton has 33231 states and 48457 transitions. Word has length 97 [2021-11-22 20:58:37,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:58:37,901 INFO L470 AbstractCegarLoop]: Abstraction has 33231 states and 48457 transitions. [2021-11-22 20:58:37,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 5 states have internal predecessors, (96), 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) [2021-11-22 20:58:37,901 INFO L276 IsEmpty]: Start isEmpty. Operand 33231 states and 48457 transitions. [2021-11-22 20:58:37,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-22 20:58:37,904 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:58:37,904 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:58:37,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-22 20:58:37,904 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:58:37,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:58:37,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1580813525, now seen corresponding path program 1 times [2021-11-22 20:58:37,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:58:37,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900499312] [2021-11-22 20:58:37,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:58:37,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:58:37,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:38,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 20:58:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:58:38,337 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:58:38,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:58:38,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900499312] [2021-11-22 20:58:38,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900499312] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 20:58:38,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 20:58:38,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-22 20:58:38,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262374827] [2021-11-22 20:58:38,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 20:58:38,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-22 20:58:38,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:58:38,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-22 20:58:38,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-22 20:58:38,339 INFO L87 Difference]: Start difference. First operand 33231 states and 48457 transitions. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 12 states have internal predecessors, (96), 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) [2021-11-22 20:58:51,572 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:58:59,372 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:59:01,025 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:59:03,042 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:59:07,104 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:59:08,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:59:11,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 20:59:37,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 20:59:37,942 INFO L93 Difference]: Finished difference Result 83935 states and 122508 transitions. [2021-11-22 20:59:37,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-22 20:59:37,943 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 12 states have internal predecessors, (96), 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 99 [2021-11-22 20:59:37,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 20:59:38,169 INFO L225 Difference]: With dead ends: 83935 [2021-11-22 20:59:38,170 INFO L226 Difference]: Without dead ends: 50731 [2021-11-22 20:59:38,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=913, Unknown=0, NotChecked=0, Total=1122 [2021-11-22 20:59:38,444 INFO L933 BasicCegarLoop]: 3309 mSDtfsCounter, 1933 mSDsluCounter, 25552 mSDsCounter, 0 mSdLazyCounter, 8833 mSolverCounterSat, 93 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1942 SdHoareTripleChecker+Valid, 28861 SdHoareTripleChecker+Invalid, 8928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 8833 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56.7s IncrementalHoareTripleChecker+Time [2021-11-22 20:59:38,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1942 Valid, 28861 Invalid, 8928 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [93 Valid, 8833 Invalid, 2 Unknown, 0 Unchecked, 56.7s Time] [2021-11-22 20:59:38,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50731 states. [2021-11-22 20:59:40,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50731 to 45097. [2021-11-22 20:59:40,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45097 states, 43707 states have (on average 1.3350950648637518) internal successors, (58353), 44060 states have internal predecessors, (58353), 501 states have call successors, (501), 301 states have call predecessors, (501), 881 states have return successors, (7257), 849 states have call predecessors, (7257), 501 states have call successors, (7257) [2021-11-22 20:59:40,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45097 states to 45097 states and 66111 transitions. [2021-11-22 20:59:40,522 INFO L78 Accepts]: Start accepts. Automaton has 45097 states and 66111 transitions. Word has length 99 [2021-11-22 20:59:40,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 20:59:40,522 INFO L470 AbstractCegarLoop]: Abstraction has 45097 states and 66111 transitions. [2021-11-22 20:59:40,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 12 states have internal predecessors, (96), 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) [2021-11-22 20:59:40,523 INFO L276 IsEmpty]: Start isEmpty. Operand 45097 states and 66111 transitions. [2021-11-22 20:59:40,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-22 20:59:40,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 20:59:40,525 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 20:59:40,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-22 20:59:40,525 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 20:59:40,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 20:59:40,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1982186345, now seen corresponding path program 1 times [2021-11-22 20:59:40,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 20:59:40,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024273136] [2021-11-22 20:59:40,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:40,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 20:59:40,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:40,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 20:59:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:41,152 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:59:41,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 20:59:41,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024273136] [2021-11-22 20:59:41,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024273136] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-22 20:59:41,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036987560] [2021-11-22 20:59:41,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 20:59:41,153 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 20:59:41,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-22 20:59:41,154 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-22 20:59:41,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-22 20:59:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 20:59:42,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 3009 conjuncts, 41 conjunts are in the unsatisfiable core [2021-11-22 20:59:42,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-22 20:59:42,733 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:59:42,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2021-11-22 20:59:42,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-22 20:59:42,795 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:59:42,796 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2021-11-22 20:59:42,835 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:59:42,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2021-11-22 20:59:42,876 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:59:42,876 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2021-11-22 20:59:42,916 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:59:42,917 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 24 [2021-11-22 20:59:43,021 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-22 20:59:43,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 29 [2021-11-22 20:59:43,175 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-22 20:59:43,175 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2021-11-22 20:59:43,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-22 20:59:43,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:59:43,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-22 20:59:43,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 28 [2021-11-22 20:59:43,639 WARN L838 $PredicateComparison]: unable to prove that (or (= (select |c_old(#valid)| |c_~#debug~0.base|) 0) (forall ((v_ArrVal_11373 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ttusb_dec_probe_ttusb_dec_init_usb_~dec#1.base| v_ArrVal_11373) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0))) is different from false [2021-11-22 20:59:43,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-11-22 20:59:44,090 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 20:59:44,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036987560] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-22 20:59:44,090 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-22 20:59:44,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 14, 13] total 34 [2021-11-22 20:59:44,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117417852] [2021-11-22 20:59:44,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-22 20:59:44,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-11-22 20:59:44,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 20:59:44,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-11-22 20:59:44,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1023, Unknown=1, NotChecked=64, Total=1190 [2021-11-22 20:59:44,092 INFO L87 Difference]: Start difference. First operand 45097 states and 66111 transitions. Second operand has 35 states, 35 states have (on average 7.285714285714286) internal successors, (255), 33 states have internal predecessors, (255), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-22 21:00:10,926 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:00:20,630 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:00:24,236 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:00:33,910 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:01:16,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:01:16,246 INFO L93 Difference]: Finished difference Result 175032 states and 288889 transitions. [2021-11-22 21:01:16,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 194 states. [2021-11-22 21:01:16,247 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.285714285714286) internal successors, (255), 33 states have internal predecessors, (255), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 99 [2021-11-22 21:01:16,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:01:17,207 INFO L225 Difference]: With dead ends: 175032 [2021-11-22 21:01:17,207 INFO L226 Difference]: Without dead ends: 129971 [2021-11-22 21:01:17,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 205 SyntacticMatches, 20 SemanticMatches, 215 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 19000 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=6104, Invalid=40328, Unknown=12, NotChecked=428, Total=46872 [2021-11-22 21:01:17,610 INFO L933 BasicCegarLoop]: 2092 mSDtfsCounter, 22799 mSDsluCounter, 44543 mSDsCounter, 0 mSdLazyCounter, 13632 mSolverCounterSat, 2124 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22799 SdHoareTripleChecker+Valid, 46635 SdHoareTripleChecker+Invalid, 22386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2124 IncrementalHoareTripleChecker+Valid, 13632 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 6629 IncrementalHoareTripleChecker+Unchecked, 74.2s IncrementalHoareTripleChecker+Time [2021-11-22 21:01:17,610 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22799 Valid, 46635 Invalid, 22386 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2124 Valid, 13632 Invalid, 1 Unknown, 6629 Unchecked, 74.2s Time] [2021-11-22 21:01:17,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129971 states. [2021-11-22 21:01:22,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129971 to 93483. [2021-11-22 21:01:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93483 states, 89728 states have (on average 1.3099144079885878) internal successors, (117536), 90605 states have internal predecessors, (117536), 1335 states have call successors, (1335), 726 states have call predecessors, (1335), 2412 states have return successors, (35207), 2163 states have call predecessors, (35207), 1335 states have call successors, (35207) [2021-11-22 21:01:23,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93483 states to 93483 states and 154078 transitions. [2021-11-22 21:01:24,000 INFO L78 Accepts]: Start accepts. Automaton has 93483 states and 154078 transitions. Word has length 99 [2021-11-22 21:01:24,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:01:24,001 INFO L470 AbstractCegarLoop]: Abstraction has 93483 states and 154078 transitions. [2021-11-22 21:01:24,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.285714285714286) internal successors, (255), 33 states have internal predecessors, (255), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-11-22 21:01:24,001 INFO L276 IsEmpty]: Start isEmpty. Operand 93483 states and 154078 transitions. [2021-11-22 21:01:24,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-22 21:01:24,005 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:01:24,005 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:01:24,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-22 21:01:24,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-22 21:01:24,216 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 21:01:24,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:01:24,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1413867863, now seen corresponding path program 1 times [2021-11-22 21:01:24,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:01:24,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010013270] [2021-11-22 21:01:24,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:01:24,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:01:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:01:24,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-22 21:01:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:01:24,970 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:01:24,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:01:24,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010013270] [2021-11-22 21:01:24,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010013270] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:01:24,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:01:24,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-22 21:01:24,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222592372] [2021-11-22 21:01:24,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:01:24,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-22 21:01:24,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:01:24,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-22 21:01:24,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2021-11-22 21:01:24,971 INFO L87 Difference]: Start difference. First operand 93483 states and 154078 transitions. Second operand has 16 states, 16 states have (on average 6.0) internal successors, (96), 14 states have internal predecessors, (96), 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) [2021-11-22 21:01:50,981 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:01:58,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:02:00,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:02:08,332 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:02:10,502 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:02:13,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-22 21:02:37,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-22 21:02:37,890 INFO L93 Difference]: Finished difference Result 221427 states and 368762 transitions. [2021-11-22 21:02:37,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-22 21:02:37,891 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 14 states have internal predecessors, (96), 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 99 [2021-11-22 21:02:37,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-22 21:02:38,853 INFO L225 Difference]: With dead ends: 221427 [2021-11-22 21:02:38,853 INFO L226 Difference]: Without dead ends: 127993 [2021-11-22 21:02:39,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=1002, Unknown=0, NotChecked=0, Total=1190 [2021-11-22 21:02:39,621 INFO L933 BasicCegarLoop]: 2949 mSDtfsCounter, 1603 mSDsluCounter, 28479 mSDsCounter, 0 mSdLazyCounter, 8290 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1613 SdHoareTripleChecker+Valid, 31428 SdHoareTripleChecker+Invalid, 8350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 8290 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.6s IncrementalHoareTripleChecker+Time [2021-11-22 21:02:39,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1613 Valid, 31428 Invalid, 8350 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 8290 Invalid, 1 Unknown, 0 Unchecked, 63.6s Time] [2021-11-22 21:02:39,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127993 states. [2021-11-22 21:02:45,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127993 to 96024. [2021-11-22 21:02:45,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96024 states, 92109 states have (on average 1.3083412044425626) internal successors, (120510), 93023 states have internal predecessors, (120510), 1376 states have call successors, (1376), 726 states have call predecessors, (1376), 2531 states have return successors, (38675), 2286 states have call predecessors, (38675), 1376 states have call successors, (38675) [2021-11-22 21:02:46,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96024 states to 96024 states and 160561 transitions. [2021-11-22 21:02:46,621 INFO L78 Accepts]: Start accepts. Automaton has 96024 states and 160561 transitions. Word has length 99 [2021-11-22 21:02:46,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-22 21:02:46,621 INFO L470 AbstractCegarLoop]: Abstraction has 96024 states and 160561 transitions. [2021-11-22 21:02:46,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.0) internal successors, (96), 14 states have internal predecessors, (96), 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) [2021-11-22 21:02:46,621 INFO L276 IsEmpty]: Start isEmpty. Operand 96024 states and 160561 transitions. [2021-11-22 21:02:46,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-22 21:02:46,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-22 21:02:46,625 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-22 21:02:46,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-22 21:02:46,626 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION === [ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-22 21:02:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-22 21:02:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1937310356, now seen corresponding path program 1 times [2021-11-22 21:02:46,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-22 21:02:46,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410251179] [2021-11-22 21:02:46,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-22 21:02:46,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-22 21:02:46,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-22 21:02:46,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-22 21:02:46,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-22 21:02:46,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410251179] [2021-11-22 21:02:46,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410251179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-22 21:02:46,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-22 21:02:46,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-22 21:02:46,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574903297] [2021-11-22 21:02:46,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-22 21:02:46,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-22 21:02:46,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-22 21:02:46,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-22 21:02:46,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-22 21:02:46,770 INFO L87 Difference]: Start difference. First operand 96024 states and 160561 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 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)