./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 a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/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 /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer --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 93cd15b2fe28f5d845fe6ce5f49d4396a1215491 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/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 /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer --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 93cd15b2fe28f5d845fe6ce5f49d4396a1215491 .......................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: only flexible array member at the end can have non-constant size --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:15:44,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:15:44,908 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:15:44,980 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:15:44,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:15:44,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:15:44,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:15:44,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:15:44,998 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:15:45,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:15:45,008 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:15:45,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:15:45,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:15:45,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:15:45,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:15:45,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:15:45,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:15:45,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:15:45,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:15:45,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:15:45,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:15:45,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:15:45,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:15:45,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:15:45,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:15:45,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:15:45,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:15:45,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:15:45,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:15:45,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:15:45,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:15:45,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:15:45,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:15:45,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:15:45,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:15:45,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:15:45,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:15:45,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:15:45,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:15:45,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:15:45,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:15:45,069 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-11-29 23:15:45,118 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:15:45,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:15:45,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:15:45,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:15:45,125 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:15:45,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:15:45,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:15:45,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:15:45,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:15:45,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:15:45,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:15:45,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:15:45,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:15:45,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:15:45,128 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:15:45,128 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:15:45,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:15:45,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:15:45,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:15:45,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:15:45,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:15:45,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:15:45,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:15:45,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:15:45,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:15:45,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:15:45,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 23:15:45,131 INFO L138 SettingsManager]: * To the following directory=dump/ WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cd15b2fe28f5d845fe6ce5f49d4396a1215491 [2020-11-29 23:15:45,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:15:45,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:15:45,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:15:45,472 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:15:45,473 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:15:45,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2020-11-29 23:15:45,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/data/fe6bec4bb/f3e3ff72346a4197b71a174710162d6e/FLAGa97932c75 [2020-11-29 23:15:46,573 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:15:46,574 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2020-11-29 23:15:46,620 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/data/fe6bec4bb/f3e3ff72346a4197b71a174710162d6e/FLAGa97932c75 [2020-11-29 23:15:46,914 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/data/fe6bec4bb/f3e3ff72346a4197b71a174710162d6e [2020-11-29 23:15:46,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:15:46,917 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:15:46,919 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:15:46,919 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:15:46,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:15:46,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:15:46" (1/1) ... [2020-11-29 23:15:46,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e8d7d04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:46, skipping insertion in model container [2020-11-29 23:15:46,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:15:46" (1/1) ... [2020-11-29 23:15:46,941 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:15:47,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:15:49,213 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:15:49,275 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:15:49,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:15:49,996 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:15:49,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:49 WrapperNode [2020-11-29 23:15:49,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:15:49,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:15:49,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:15:49,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:15:50,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:49" (1/1) ... [2020-11-29 23:15:50,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:49" (1/1) ... [2020-11-29 23:15:50,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:15:50,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:15:50,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:15:50,488 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:15:50,498 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:49" (1/1) ... [2020-11-29 23:15:50,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:49" (1/1) ... [2020-11-29 23:15:50,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:49" (1/1) ... [2020-11-29 23:15:50,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:49" (1/1) ... [2020-11-29 23:15:50,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:49" (1/1) ... [2020-11-29 23:15:50,925 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:49" (1/1) ... [2020-11-29 23:15:50,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:49" (1/1) ... [2020-11-29 23:15:51,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:15:51,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:15:51,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:15:51,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:15:51,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:15:51,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-11-29 23:15:51,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2020-11-29 23:15:51,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2020-11-29 23:15:51,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 23:15:51,105 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2020-11-29 23:15:51,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2020-11-29 23:15:51,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 23:15:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-29 23:15:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-29 23:15:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:15:51,107 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2020-11-29 23:15:51,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2020-11-29 23:15:51,109 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-29 23:15:51,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 23:15:51,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-29 23:15:51,109 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2020-11-29 23:15:51,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2020-11-29 23:15:51,110 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2020-11-29 23:15:51,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2020-11-29 23:15:51,110 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-11-29 23:15:51,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2020-11-29 23:15:51,110 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2020-11-29 23:15:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2020-11-29 23:15:51,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:15:51,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2020-11-29 23:15:51,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:15:51,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:15:52,304 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 23:15:57,666 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##627: assume !false; [2020-11-29 23:15:57,666 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##626: assume false; [2020-11-29 23:15:57,667 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 23:15:57,909 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2020-11-29 23:15:57,909 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2020-11-29 23:15:57,919 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 23:15:57,920 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 23:16:07,815 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##232: assume false; [2020-11-29 23:16:07,815 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##233: assume !false; [2020-11-29 23:16:07,816 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint L8653: ttusb_dec_start_feed_#res := 0; [2020-11-29 23:16:07,816 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##194: assume !false; [2020-11-29 23:16:07,816 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##193: assume false; [2020-11-29 23:16:07,820 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-29 23:16:12,822 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2020-11-29 23:16:12,822 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2020-11-29 23:16:13,222 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:16:13,222 INFO L298 CfgBuilder]: Removed 1138 assume(true) statements. [2020-11-29 23:16:13,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:16:13 BoogieIcfgContainer [2020-11-29 23:16:13,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:16:13,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:16:13,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:16:13,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:16:13,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:15:46" (1/3) ... [2020-11-29 23:16:13,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a94f1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:16:13, skipping insertion in model container [2020-11-29 23:16:13,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:15:49" (2/3) ... [2020-11-29 23:16:13,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a94f1b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:16:13, skipping insertion in model container [2020-11-29 23:16:13,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:16:13" (3/3) ... [2020-11-29 23:16:13,238 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2020-11-29 23:16:13,249 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:16:13,255 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-11-29 23:16:13,271 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-11-29 23:16:13,318 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:16:13,320 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:16:13,320 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:16:13,321 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:16:13,321 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:16:13,321 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:16:13,321 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:16:13,321 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:16:13,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states. [2020-11-29 23:16:13,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 23:16:13,380 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:16:13,381 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:16:13,381 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:16:13,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:16:13,387 INFO L82 PathProgramCache]: Analyzing trace with hash 9078414, now seen corresponding path program 1 times [2020-11-29 23:16:13,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:16:13,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845805461] [2020-11-29 23:16:13,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:16:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:16:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:16:14,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845805461] [2020-11-29 23:16:14,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:16:14,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:16:14,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944872186] [2020-11-29 23:16:14,248 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:16:14,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:16:14,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:16:14,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:16:14,267 INFO L87 Difference]: Start difference. First operand 1589 states. Second operand 3 states. [2020-11-29 23:16:14,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:16:14,596 INFO L93 Difference]: Finished difference Result 4711 states and 7108 transitions. [2020-11-29 23:16:14,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:16:14,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-29 23:16:14,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:16:14,631 INFO L225 Difference]: With dead ends: 4711 [2020-11-29 23:16:14,631 INFO L226 Difference]: Without dead ends: 3102 [2020-11-29 23:16:14,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:16:14,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2020-11-29 23:16:14,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3078. [2020-11-29 23:16:14,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3078 states. [2020-11-29 23:16:14,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3078 states to 3078 states and 4252 transitions. [2020-11-29 23:16:14,846 INFO L78 Accepts]: Start accepts. Automaton has 3078 states and 4252 transitions. Word has length 12 [2020-11-29 23:16:14,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:16:14,847 INFO L481 AbstractCegarLoop]: Abstraction has 3078 states and 4252 transitions. [2020-11-29 23:16:14,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:16:14,848 INFO L276 IsEmpty]: Start isEmpty. Operand 3078 states and 4252 transitions. [2020-11-29 23:16:14,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:16:14,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:16:14,850 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:16:14,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:16:14,851 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:16:14,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:16:14,854 INFO L82 PathProgramCache]: Analyzing trace with hash 280079008, now seen corresponding path program 1 times [2020-11-29 23:16:14,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:16:14,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933296138] [2020-11-29 23:16:14,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:16:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:16:15,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:16:15,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933296138] [2020-11-29 23:16:15,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:16:15,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:16:15,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084895974] [2020-11-29 23:16:15,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:16:15,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:16:15,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:16:15,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:16:15,159 INFO L87 Difference]: Start difference. First operand 3078 states and 4252 transitions. Second operand 3 states. [2020-11-29 23:16:15,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:16:15,380 INFO L93 Difference]: Finished difference Result 9212 states and 12803 transitions. [2020-11-29 23:16:15,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:16:15,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-29 23:16:15,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:16:15,421 INFO L225 Difference]: With dead ends: 9212 [2020-11-29 23:16:15,421 INFO L226 Difference]: Without dead ends: 6139 [2020-11-29 23:16:15,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:16:15,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6139 states. [2020-11-29 23:16:15,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6139 to 6105. [2020-11-29 23:16:15,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6105 states. [2020-11-29 23:16:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6105 states to 6105 states and 8489 transitions. [2020-11-29 23:16:15,647 INFO L78 Accepts]: Start accepts. Automaton has 6105 states and 8489 transitions. Word has length 13 [2020-11-29 23:16:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:16:15,647 INFO L481 AbstractCegarLoop]: Abstraction has 6105 states and 8489 transitions. [2020-11-29 23:16:15,648 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:16:15,648 INFO L276 IsEmpty]: Start isEmpty. Operand 6105 states and 8489 transitions. [2020-11-29 23:16:15,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-29 23:16:15,650 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:16:15,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:16:15,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 23:16:15,651 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:16:15,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:16:15,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1245558355, now seen corresponding path program 1 times [2020-11-29 23:16:15,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:16:15,652 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352369696] [2020-11-29 23:16:15,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:16:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:16:15,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:16:15,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352369696] [2020-11-29 23:16:15,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:16:15,962 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:16:15,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169746595] [2020-11-29 23:16:15,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 23:16:15,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:16:15,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 23:16:15,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:16:15,965 INFO L87 Difference]: Start difference. First operand 6105 states and 8489 transitions. Second operand 3 states. [2020-11-29 23:16:16,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:16:16,211 INFO L93 Difference]: Finished difference Result 12238 states and 17028 transitions. [2020-11-29 23:16:16,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 23:16:16,212 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2020-11-29 23:16:16,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:16:16,255 INFO L225 Difference]: With dead ends: 12238 [2020-11-29 23:16:16,256 INFO L226 Difference]: Without dead ends: 6140 [2020-11-29 23:16:16,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 23:16:16,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6140 states. [2020-11-29 23:16:16,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6140 to 6140. [2020-11-29 23:16:16,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6140 states. [2020-11-29 23:16:16,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6140 states to 6140 states and 8535 transitions. [2020-11-29 23:16:16,704 INFO L78 Accepts]: Start accepts. Automaton has 6140 states and 8535 transitions. Word has length 46 [2020-11-29 23:16:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:16:16,704 INFO L481 AbstractCegarLoop]: Abstraction has 6140 states and 8535 transitions. [2020-11-29 23:16:16,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 23:16:16,705 INFO L276 IsEmpty]: Start isEmpty. Operand 6140 states and 8535 transitions. [2020-11-29 23:16:16,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-29 23:16:16,718 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:16:16,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:16:16,719 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 23:16:16,719 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:16:16,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:16:16,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1869200131, now seen corresponding path program 1 times [2020-11-29 23:16:16,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:16:16,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776908840] [2020-11-29 23:16:16,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:16:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:16:17,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 23:16:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:16:17,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:16:17,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776908840] [2020-11-29 23:16:17,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:16:17,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-29 23:16:17,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671769635] [2020-11-29 23:16:17,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 23:16:17,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:16:17,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:16:17,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:16:17,239 INFO L87 Difference]: Start difference. First operand 6140 states and 8535 transitions. Second operand 8 states. [2020-11-29 23:16:34,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:16:34,740 INFO L93 Difference]: Finished difference Result 15925 states and 22293 transitions. [2020-11-29 23:16:34,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 23:16:34,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 64 [2020-11-29 23:16:34,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:16:34,821 INFO L225 Difference]: With dead ends: 15925 [2020-11-29 23:16:34,821 INFO L226 Difference]: Without dead ends: 9793 [2020-11-29 23:16:34,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-11-29 23:16:34,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9793 states. [2020-11-29 23:16:35,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9793 to 6283. [2020-11-29 23:16:35,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6283 states. [2020-11-29 23:16:35,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6283 states to 6283 states and 8730 transitions. [2020-11-29 23:16:35,255 INFO L78 Accepts]: Start accepts. Automaton has 6283 states and 8730 transitions. Word has length 64 [2020-11-29 23:16:35,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:16:35,255 INFO L481 AbstractCegarLoop]: Abstraction has 6283 states and 8730 transitions. [2020-11-29 23:16:35,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 23:16:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 6283 states and 8730 transitions. [2020-11-29 23:16:35,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-29 23:16:35,257 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:16:35,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:16:35,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 23:16:35,258 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:16:35,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:16:35,259 INFO L82 PathProgramCache]: Analyzing trace with hash -975713793, now seen corresponding path program 1 times [2020-11-29 23:16:35,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:16:35,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382198733] [2020-11-29 23:16:35,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:16:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:16:35,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 23:16:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:16:35,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:16:35,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382198733] [2020-11-29 23:16:35,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:16:35,626 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:16:35,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075828279] [2020-11-29 23:16:35,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:16:35,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:16:35,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:16:35,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:16:35,628 INFO L87 Difference]: Start difference. First operand 6283 states and 8730 transitions. Second operand 5 states. [2020-11-29 23:17:01,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:17:01,943 INFO L93 Difference]: Finished difference Result 15612 states and 21881 transitions. [2020-11-29 23:17:01,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:17:01,944 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-11-29 23:17:01,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:17:02,009 INFO L225 Difference]: With dead ends: 15612 [2020-11-29 23:17:02,009 INFO L226 Difference]: Without dead ends: 9337 [2020-11-29 23:17:02,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:17:02,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9337 states. [2020-11-29 23:17:02,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9337 to 6509. [2020-11-29 23:17:02,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6509 states. [2020-11-29 23:17:02,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6509 states to 6509 states and 9050 transitions. [2020-11-29 23:17:02,344 INFO L78 Accepts]: Start accepts. Automaton has 6509 states and 9050 transitions. Word has length 64 [2020-11-29 23:17:02,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:17:02,346 INFO L481 AbstractCegarLoop]: Abstraction has 6509 states and 9050 transitions. [2020-11-29 23:17:02,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:17:02,347 INFO L276 IsEmpty]: Start isEmpty. Operand 6509 states and 9050 transitions. [2020-11-29 23:17:02,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-29 23:17:02,349 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:17:02,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:17:02,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-29 23:17:02,350 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:17:02,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:17:02,356 INFO L82 PathProgramCache]: Analyzing trace with hash 702416001, now seen corresponding path program 1 times [2020-11-29 23:17:02,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:17:02,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987973098] [2020-11-29 23:17:02,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:17:02,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:17:02,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 23:17:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:17:02,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:17:02,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987973098] [2020-11-29 23:17:02,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:17:02,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-29 23:17:02,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842303126] [2020-11-29 23:17:02,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 23:17:02,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:17:02,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 23:17:02,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:17:02,797 INFO L87 Difference]: Start difference. First operand 6509 states and 9050 transitions. Second operand 9 states. [2020-11-29 23:17:44,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:17:44,972 INFO L93 Difference]: Finished difference Result 23994 states and 33696 transitions. [2020-11-29 23:17:44,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 23:17:44,974 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2020-11-29 23:17:44,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:17:45,049 INFO L225 Difference]: With dead ends: 23994 [2020-11-29 23:17:45,049 INFO L226 Difference]: Without dead ends: 17706 [2020-11-29 23:17:45,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-11-29 23:17:45,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17706 states. [2020-11-29 23:17:45,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17706 to 6525. [2020-11-29 23:17:45,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6525 states. [2020-11-29 23:17:45,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6525 states to 6525 states and 9066 transitions. [2020-11-29 23:17:45,468 INFO L78 Accepts]: Start accepts. Automaton has 6525 states and 9066 transitions. Word has length 64 [2020-11-29 23:17:45,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:17:45,469 INFO L481 AbstractCegarLoop]: Abstraction has 6525 states and 9066 transitions. [2020-11-29 23:17:45,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 23:17:45,470 INFO L276 IsEmpty]: Start isEmpty. Operand 6525 states and 9066 transitions. [2020-11-29 23:17:45,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-11-29 23:17:45,471 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:17:45,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:17:45,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-29 23:17:45,472 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:17:45,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:17:45,472 INFO L82 PathProgramCache]: Analyzing trace with hash -2004203393, now seen corresponding path program 1 times [2020-11-29 23:17:45,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:17:45,473 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59516366] [2020-11-29 23:17:45,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:17:45,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:17:45,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 23:17:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:17:45,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:17:45,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59516366] [2020-11-29 23:17:45,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:17:45,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 23:17:45,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972123804] [2020-11-29 23:17:45,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:17:45,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:17:45,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:17:45,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:17:45,854 INFO L87 Difference]: Start difference. First operand 6525 states and 9066 transitions. Second operand 7 states. [2020-11-29 23:18:11,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:18:11,612 INFO L93 Difference]: Finished difference Result 22734 states and 31879 transitions. [2020-11-29 23:18:11,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 23:18:11,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2020-11-29 23:18:11,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:18:11,778 INFO L225 Difference]: With dead ends: 22734 [2020-11-29 23:18:11,778 INFO L226 Difference]: Without dead ends: 19546 [2020-11-29 23:18:11,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-11-29 23:18:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19546 states. [2020-11-29 23:18:12,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19546 to 6525. [2020-11-29 23:18:12,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6525 states. [2020-11-29 23:18:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6525 states to 6525 states and 9058 transitions. [2020-11-29 23:18:12,219 INFO L78 Accepts]: Start accepts. Automaton has 6525 states and 9058 transitions. Word has length 64 [2020-11-29 23:18:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:18:12,220 INFO L481 AbstractCegarLoop]: Abstraction has 6525 states and 9058 transitions. [2020-11-29 23:18:12,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:18:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 6525 states and 9058 transitions. [2020-11-29 23:18:12,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-29 23:18:12,221 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:18:12,221 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:18:12,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-29 23:18:12,222 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:18:12,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:18:12,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1961258442, now seen corresponding path program 1 times [2020-11-29 23:18:12,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:18:12,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013836010] [2020-11-29 23:18:12,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:18:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:18:12,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 23:18:12,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:18:12,538 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:18:12,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013836010] [2020-11-29 23:18:12,539 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:18:12,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:18:12,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161160605] [2020-11-29 23:18:12,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:18:12,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:18:12,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:18:12,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:18:12,542 INFO L87 Difference]: Start difference. First operand 6525 states and 9058 transitions. Second operand 6 states. [2020-11-29 23:18:49,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:18:49,861 INFO L93 Difference]: Finished difference Result 18388 states and 26033 transitions. [2020-11-29 23:18:49,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 23:18:49,863 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-11-29 23:18:49,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:18:49,911 INFO L225 Difference]: With dead ends: 18388 [2020-11-29 23:18:49,912 INFO L226 Difference]: Without dead ends: 11871 [2020-11-29 23:18:49,950 INFO L677 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 [2020-11-29 23:18:49,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11871 states. [2020-11-29 23:18:50,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11871 to 10982. [2020-11-29 23:18:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10982 states. [2020-11-29 23:18:50,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10982 states to 10982 states and 15522 transitions. [2020-11-29 23:18:50,693 INFO L78 Accepts]: Start accepts. Automaton has 10982 states and 15522 transitions. Word has length 67 [2020-11-29 23:18:50,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:18:50,694 INFO L481 AbstractCegarLoop]: Abstraction has 10982 states and 15522 transitions. [2020-11-29 23:18:50,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:18:50,694 INFO L276 IsEmpty]: Start isEmpty. Operand 10982 states and 15522 transitions. [2020-11-29 23:18:50,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-29 23:18:50,699 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:18:50,700 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:18:50,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-29 23:18:50,700 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:18:50,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:18:50,700 INFO L82 PathProgramCache]: Analyzing trace with hash -67327668, now seen corresponding path program 1 times [2020-11-29 23:18:50,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:18:50,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651391087] [2020-11-29 23:18:50,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:18:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:18:51,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 23:18:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:18:51,057 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:18:51,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651391087] [2020-11-29 23:18:51,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:18:51,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:18:51,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373024561] [2020-11-29 23:18:51,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:18:51,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:18:51,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:18:51,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:18:51,064 INFO L87 Difference]: Start difference. First operand 10982 states and 15522 transitions. Second operand 6 states. [2020-11-29 23:19:09,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:19:09,246 INFO L93 Difference]: Finished difference Result 22313 states and 31414 transitions. [2020-11-29 23:19:09,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:19:09,248 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2020-11-29 23:19:09,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:19:09,402 INFO L225 Difference]: With dead ends: 22313 [2020-11-29 23:19:09,402 INFO L226 Difference]: Without dead ends: 11324 [2020-11-29 23:19:09,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:19:09,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11324 states. [2020-11-29 23:19:09,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11324 to 10730. [2020-11-29 23:19:09,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10730 states. [2020-11-29 23:19:10,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10730 states to 10730 states and 15094 transitions. [2020-11-29 23:19:10,037 INFO L78 Accepts]: Start accepts. Automaton has 10730 states and 15094 transitions. Word has length 67 [2020-11-29 23:19:10,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:19:10,037 INFO L481 AbstractCegarLoop]: Abstraction has 10730 states and 15094 transitions. [2020-11-29 23:19:10,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:19:10,038 INFO L276 IsEmpty]: Start isEmpty. Operand 10730 states and 15094 transitions. [2020-11-29 23:19:10,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-29 23:19:10,039 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:19:10,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:19:10,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-29 23:19:10,039 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:19:10,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:10,040 INFO L82 PathProgramCache]: Analyzing trace with hash -307818629, now seen corresponding path program 1 times [2020-11-29 23:19:10,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:10,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017243140] [2020-11-29 23:19:10,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:10,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:19:10,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017243140] [2020-11-29 23:19:10,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:19:10,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 23:19:10,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465363606] [2020-11-29 23:19:10,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:19:10,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:19:10,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:19:10,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:19:10,432 INFO L87 Difference]: Start difference. First operand 10730 states and 15094 transitions. Second operand 4 states. [2020-11-29 23:19:13,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:19:13,783 INFO L93 Difference]: Finished difference Result 16183 states and 22992 transitions. [2020-11-29 23:19:13,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:19:13,785 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-11-29 23:19:13,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:19:13,842 INFO L225 Difference]: With dead ends: 16183 [2020-11-29 23:19:13,843 INFO L226 Difference]: Without dead ends: 16158 [2020-11-29 23:19:13,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:19:13,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16158 states. [2020-11-29 23:19:14,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16158 to 16090. [2020-11-29 23:19:14,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16090 states. [2020-11-29 23:19:14,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16090 states to 16090 states and 22888 transitions. [2020-11-29 23:19:14,715 INFO L78 Accepts]: Start accepts. Automaton has 16090 states and 22888 transitions. Word has length 68 [2020-11-29 23:19:14,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:19:14,716 INFO L481 AbstractCegarLoop]: Abstraction has 16090 states and 22888 transitions. [2020-11-29 23:19:14,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:19:14,716 INFO L276 IsEmpty]: Start isEmpty. Operand 16090 states and 22888 transitions. [2020-11-29 23:19:14,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-29 23:19:14,718 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:19:14,718 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:19:14,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-29 23:19:14,718 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:19:14,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:14,719 INFO L82 PathProgramCache]: Analyzing trace with hash 1263624251, now seen corresponding path program 1 times [2020-11-29 23:19:14,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:14,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381209344] [2020-11-29 23:19:14,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:14,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:15,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:19:15,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381209344] [2020-11-29 23:19:15,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:19:15,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:19:15,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941691562] [2020-11-29 23:19:15,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:19:15,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:19:15,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:19:15,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:19:15,003 INFO L87 Difference]: Start difference. First operand 16090 states and 22888 transitions. Second operand 4 states. [2020-11-29 23:19:16,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:19:16,124 INFO L93 Difference]: Finished difference Result 34999 states and 50579 transitions. [2020-11-29 23:19:16,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:19:16,125 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-11-29 23:19:16,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:19:16,197 INFO L225 Difference]: With dead ends: 34999 [2020-11-29 23:19:16,197 INFO L226 Difference]: Without dead ends: 18936 [2020-11-29 23:19:16,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:19:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18936 states. [2020-11-29 23:19:17,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18936 to 13397. [2020-11-29 23:19:17,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13397 states. [2020-11-29 23:19:17,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13397 states to 13397 states and 18982 transitions. [2020-11-29 23:19:17,256 INFO L78 Accepts]: Start accepts. Automaton has 13397 states and 18982 transitions. Word has length 68 [2020-11-29 23:19:17,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:19:17,257 INFO L481 AbstractCegarLoop]: Abstraction has 13397 states and 18982 transitions. [2020-11-29 23:19:17,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:19:17,257 INFO L276 IsEmpty]: Start isEmpty. Operand 13397 states and 18982 transitions. [2020-11-29 23:19:17,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-11-29 23:19:17,258 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:19:17,259 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:19:17,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-29 23:19:17,259 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:19:17,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:17,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1658625852, now seen corresponding path program 1 times [2020-11-29 23:19:17,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:17,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852260667] [2020-11-29 23:19:17,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:17,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:17,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 23:19:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:17,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:19:17,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852260667] [2020-11-29 23:19:17,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:19:17,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:19:17,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416441494] [2020-11-29 23:19:17,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:19:17,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:19:17,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:19:17,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:19:17,704 INFO L87 Difference]: Start difference. First operand 13397 states and 18982 transitions. Second operand 6 states. [2020-11-29 23:19:35,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:19:35,281 INFO L93 Difference]: Finished difference Result 27417 states and 38720 transitions. [2020-11-29 23:19:35,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:19:35,282 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 76 [2020-11-29 23:19:35,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:19:35,345 INFO L225 Difference]: With dead ends: 27417 [2020-11-29 23:19:35,345 INFO L226 Difference]: Without dead ends: 27404 [2020-11-29 23:19:35,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:19:35,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27404 states. [2020-11-29 23:19:36,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27404 to 25965. [2020-11-29 23:19:36,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25965 states. [2020-11-29 23:19:36,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25965 states to 25965 states and 36847 transitions. [2020-11-29 23:19:36,713 INFO L78 Accepts]: Start accepts. Automaton has 25965 states and 36847 transitions. Word has length 76 [2020-11-29 23:19:36,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:19:36,713 INFO L481 AbstractCegarLoop]: Abstraction has 25965 states and 36847 transitions. [2020-11-29 23:19:36,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:19:36,713 INFO L276 IsEmpty]: Start isEmpty. Operand 25965 states and 36847 transitions. [2020-11-29 23:19:36,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-29 23:19:36,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:19:36,715 INFO L422 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] [2020-11-29 23:19:36,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-29 23:19:36,715 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:19:36,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:36,715 INFO L82 PathProgramCache]: Analyzing trace with hash 957184315, now seen corresponding path program 1 times [2020-11-29 23:19:36,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:36,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386362537] [2020-11-29 23:19:36,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:37,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 23:19:37,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:37,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:19:37,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386362537] [2020-11-29 23:19:37,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700213699] [2020-11-29 23:19:37,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:19:38,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:38,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 2354 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:19:38,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:19:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-11-29 23:19:38,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:19:38,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2020-11-29 23:19:38,387 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981586388] [2020-11-29 23:19:38,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:19:38,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:19:38,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:19:38,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:19:38,395 INFO L87 Difference]: Start difference. First operand 25965 states and 36847 transitions. Second operand 4 states. [2020-11-29 23:19:40,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:19:40,146 INFO L93 Difference]: Finished difference Result 51924 states and 73687 transitions. [2020-11-29 23:19:40,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:19:40,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-11-29 23:19:40,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:19:40,366 INFO L225 Difference]: With dead ends: 51924 [2020-11-29 23:19:40,366 INFO L226 Difference]: Without dead ends: 25965 [2020-11-29 23:19:40,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:19:40,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25965 states. [2020-11-29 23:19:42,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25965 to 25965. [2020-11-29 23:19:42,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25965 states. [2020-11-29 23:19:42,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25965 states to 25965 states and 36846 transitions. [2020-11-29 23:19:42,529 INFO L78 Accepts]: Start accepts. Automaton has 25965 states and 36846 transitions. Word has length 80 [2020-11-29 23:19:42,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:19:42,530 INFO L481 AbstractCegarLoop]: Abstraction has 25965 states and 36846 transitions. [2020-11-29 23:19:42,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:19:42,530 INFO L276 IsEmpty]: Start isEmpty. Operand 25965 states and 36846 transitions. [2020-11-29 23:19:42,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-29 23:19:42,532 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:19:42,532 INFO L422 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] [2020-11-29 23:19:42,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 23:19:42,757 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:19:42,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:42,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1603678531, now seen corresponding path program 1 times [2020-11-29 23:19:42,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:42,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147269617] [2020-11-29 23:19:42,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:42,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:43,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 23:19:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:43,285 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:19:43,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147269617] [2020-11-29 23:19:43,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953154620] [2020-11-29 23:19:43,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:19:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:44,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 2354 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 23:19:44,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:19:44,559 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:19:44,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:19:44,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2020-11-29 23:19:44,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029514235] [2020-11-29 23:19:44,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:19:44,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:19:44,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:19:44,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:19:44,561 INFO L87 Difference]: Start difference. First operand 25965 states and 36846 transitions. Second operand 4 states. [2020-11-29 23:19:45,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:19:45,627 INFO L93 Difference]: Finished difference Result 51903 states and 73658 transitions. [2020-11-29 23:19:45,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:19:45,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-11-29 23:19:45,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:19:45,775 INFO L225 Difference]: With dead ends: 51903 [2020-11-29 23:19:45,776 INFO L226 Difference]: Without dead ends: 25965 [2020-11-29 23:19:45,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:19:45,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25965 states. [2020-11-29 23:19:47,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25965 to 25965. [2020-11-29 23:19:47,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25965 states. [2020-11-29 23:19:47,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25965 states to 25965 states and 36837 transitions. [2020-11-29 23:19:47,407 INFO L78 Accepts]: Start accepts. Automaton has 25965 states and 36837 transitions. Word has length 80 [2020-11-29 23:19:47,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:19:47,408 INFO L481 AbstractCegarLoop]: Abstraction has 25965 states and 36837 transitions. [2020-11-29 23:19:47,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:19:47,408 INFO L276 IsEmpty]: Start isEmpty. Operand 25965 states and 36837 transitions. [2020-11-29 23:19:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-11-29 23:19:47,410 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:19:47,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:19:47,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 23:19:47,615 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:19:47,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:47,615 INFO L82 PathProgramCache]: Analyzing trace with hash -44575398, now seen corresponding path program 1 times [2020-11-29 23:19:47,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:47,616 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338529667] [2020-11-29 23:19:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:47,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:19:47,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338529667] [2020-11-29 23:19:47,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:19:47,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:19:47,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163583630] [2020-11-29 23:19:47,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:19:47,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:19:47,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:19:47,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:19:47,932 INFO L87 Difference]: Start difference. First operand 25965 states and 36837 transitions. Second operand 5 states. [2020-11-29 23:19:49,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:19:49,990 INFO L93 Difference]: Finished difference Result 62172 states and 89948 transitions. [2020-11-29 23:19:49,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:19:49,991 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-11-29 23:19:49,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:19:50,095 INFO L225 Difference]: With dead ends: 62172 [2020-11-29 23:19:50,095 INFO L226 Difference]: Without dead ends: 36234 [2020-11-29 23:19:50,243 INFO L677 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 [2020-11-29 23:19:50,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36234 states. [2020-11-29 23:19:51,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36234 to 26025. [2020-11-29 23:19:51,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26025 states. [2020-11-29 23:19:51,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26025 states to 26025 states and 36897 transitions. [2020-11-29 23:19:51,778 INFO L78 Accepts]: Start accepts. Automaton has 26025 states and 36897 transitions. Word has length 86 [2020-11-29 23:19:51,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:19:51,778 INFO L481 AbstractCegarLoop]: Abstraction has 26025 states and 36897 transitions. [2020-11-29 23:19:51,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:19:51,779 INFO L276 IsEmpty]: Start isEmpty. Operand 26025 states and 36897 transitions. [2020-11-29 23:19:51,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-11-29 23:19:51,782 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:19:51,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:19:51,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-29 23:19:51,782 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:19:51,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:51,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1653365427, now seen corresponding path program 1 times [2020-11-29 23:19:51,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:51,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835036061] [2020-11-29 23:19:51,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:51,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:52,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:19:52,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835036061] [2020-11-29 23:19:52,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:19:52,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:19:52,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745807495] [2020-11-29 23:19:52,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:19:52,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:19:52,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:19:52,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:19:52,038 INFO L87 Difference]: Start difference. First operand 26025 states and 36897 transitions. Second operand 4 states. [2020-11-29 23:19:53,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:19:53,735 INFO L93 Difference]: Finished difference Result 52103 states and 75520 transitions. [2020-11-29 23:19:53,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 23:19:53,737 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-11-29 23:19:53,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:19:53,812 INFO L225 Difference]: With dead ends: 52103 [2020-11-29 23:19:53,812 INFO L226 Difference]: Without dead ends: 26105 [2020-11-29 23:19:53,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:19:53,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26105 states. [2020-11-29 23:19:55,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26105 to 26065. [2020-11-29 23:19:55,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26065 states. [2020-11-29 23:19:55,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26065 states to 26065 states and 36937 transitions. [2020-11-29 23:19:55,376 INFO L78 Accepts]: Start accepts. Automaton has 26065 states and 36937 transitions. Word has length 89 [2020-11-29 23:19:55,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:19:55,376 INFO L481 AbstractCegarLoop]: Abstraction has 26065 states and 36937 transitions. [2020-11-29 23:19:55,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:19:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 26065 states and 36937 transitions. [2020-11-29 23:19:55,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-29 23:19:55,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:19:55,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:19:55,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-29 23:19:55,379 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:19:55,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:19:55,379 INFO L82 PathProgramCache]: Analyzing trace with hash -2066716378, now seen corresponding path program 1 times [2020-11-29 23:19:55,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:19:55,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094853938] [2020-11-29 23:19:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:19:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:56,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 23:19:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:19:56,485 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:19:56,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094853938] [2020-11-29 23:19:56,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:19:56,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-29 23:19:56,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022198895] [2020-11-29 23:19:56,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 23:19:56,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:19:56,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 23:19:56,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-11-29 23:19:56,488 INFO L87 Difference]: Start difference. First operand 26065 states and 36937 transitions. Second operand 12 states. [2020-11-29 23:21:12,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:21:12,821 INFO L93 Difference]: Finished difference Result 67758 states and 96291 transitions. [2020-11-29 23:21:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-29 23:21:12,824 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 97 [2020-11-29 23:21:12,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:21:12,914 INFO L225 Difference]: With dead ends: 67758 [2020-11-29 23:21:12,914 INFO L226 Difference]: Without dead ends: 41720 [2020-11-29 23:21:12,980 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2020-11-29 23:21:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41720 states. [2020-11-29 23:21:15,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41720 to 32641. [2020-11-29 23:21:15,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32641 states. [2020-11-29 23:21:15,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32641 states to 32641 states and 46278 transitions. [2020-11-29 23:21:15,173 INFO L78 Accepts]: Start accepts. Automaton has 32641 states and 46278 transitions. Word has length 97 [2020-11-29 23:21:15,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:21:15,173 INFO L481 AbstractCegarLoop]: Abstraction has 32641 states and 46278 transitions. [2020-11-29 23:21:15,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 23:21:15,173 INFO L276 IsEmpty]: Start isEmpty. Operand 32641 states and 46278 transitions. [2020-11-29 23:21:15,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-11-29 23:21:15,178 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:21:15,178 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:21:15,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-29 23:21:15,179 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ttusb_dec_probeErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr1ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_probeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr2ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr0ASSERT_VIOLATIONERROR_FUNCTION, ttusb_dec_disconnectErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:21:15,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:21:15,179 INFO L82 PathProgramCache]: Analyzing trace with hash -2121109276, now seen corresponding path program 1 times [2020-11-29 23:21:15,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:21:15,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129322210] [2020-11-29 23:21:15,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:21:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:21:15,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-29 23:21:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:21:15,751 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 17: A-local: [(|#memory_int_-1| (Array Int (Array Int Int)))], B-local: []. [2020-11-29 23:21:15,764 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 18: A-local: [(|#memory_int_-1| (Array Int (Array Int Int)))], B-local: []. [2020-11-29 23:21:15,767 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 19: A-local: [(|#memory_int_-1| (Array Int (Array Int Int)))], B-local: []. [2020-11-29 23:21:15,769 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 20: A-local: [(|#memory_int_-1| (Array Int (Array Int Int)))], B-local: []. [2020-11-29 23:21:15,772 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 21: A-local: [(|#memory_int_-1| (Array Int (Array Int Int)))], B-local: []. [2020-11-29 23:21:15,774 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 22: A-local: [(|#memory_int_-1| (Array Int (Array Int Int)))], B-local: []. [2020-11-29 23:21:15,777 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 23: A-local: [(|#memory_int_-1| (Array Int (Array Int Int)))], B-local: []. [2020-11-29 23:21:15,803 ERROR L253 erpolLogProxyWrapper]: Interpolant 41 not inductive [2020-11-29 23:21:15,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-11-29 23:21:15,805 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:876) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.getInterpolants(NoopScript.java:386) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.getInterpolants(WrapperScript.java:337) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.getInterpolants(ManagedScript.java:191) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:285) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:326) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:378) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:228) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-29 23:21:15,814 INFO L168 Benchmark]: Toolchain (without parser) took 328896.11 ms. Allocated memory was 90.2 MB in the beginning and 6.3 GB in the end (delta: 6.2 GB). Free memory was 59.5 MB in the beginning and 4.9 GB in the end (delta: -4.9 GB). Peak memory consumption was 1.4 GB. Max. memory is 16.1 GB. [2020-11-29 23:21:15,815 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 69.7 MB in the beginning and 69.7 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:21:15,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3078.59 ms. Allocated memory was 90.2 MB in the beginning and 226.5 MB in the end (delta: 136.3 MB). Free memory was 59.3 MB in the beginning and 140.2 MB in the end (delta: -80.9 MB). Peak memory consumption was 79.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:21:15,817 INFO L168 Benchmark]: Boogie Procedure Inliner took 488.53 ms. Allocated memory is still 226.5 MB. Free memory was 140.2 MB in the beginning and 141.6 MB in the end (delta: -1.3 MB). Peak memory consumption was 50.1 MB. Max. memory is 16.1 GB. [2020-11-29 23:21:15,819 INFO L168 Benchmark]: Boogie Preprocessor took 527.05 ms. Allocated memory is still 226.5 MB. Free memory was 141.6 MB in the beginning and 112.9 MB in the end (delta: 28.7 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. [2020-11-29 23:21:15,820 INFO L168 Benchmark]: RCFGBuilder took 22212.95 ms. Allocated memory was 226.5 MB in the beginning and 855.6 MB in the end (delta: 629.1 MB). Free memory was 112.9 MB in the beginning and 279.2 MB in the end (delta: -166.4 MB). Peak memory consumption was 486.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:21:15,820 INFO L168 Benchmark]: TraceAbstraction took 302582.43 ms. Allocated memory was 855.6 MB in the beginning and 6.3 GB in the end (delta: 5.5 GB). Free memory was 279.2 MB in the beginning and 4.9 GB in the end (delta: -4.7 GB). Peak memory consumption was 811.6 MB. Max. memory is 16.1 GB. [2020-11-29 23:21:15,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 90.2 MB. Free memory was 69.7 MB in the beginning and 69.7 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 3078.59 ms. Allocated memory was 90.2 MB in the beginning and 226.5 MB in the end (delta: 136.3 MB). Free memory was 59.3 MB in the beginning and 140.2 MB in the end (delta: -80.9 MB). Peak memory consumption was 79.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 488.53 ms. Allocated memory is still 226.5 MB. Free memory was 140.2 MB in the beginning and 141.6 MB in the end (delta: -1.3 MB). Peak memory consumption was 50.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 527.05 ms. Allocated memory is still 226.5 MB. Free memory was 141.6 MB in the beginning and 112.9 MB in the end (delta: 28.7 MB). Peak memory consumption was 40.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 22212.95 ms. Allocated memory was 226.5 MB in the beginning and 855.6 MB in the end (delta: 629.1 MB). Free memory was 112.9 MB in the beginning and 279.2 MB in the end (delta: -166.4 MB). Peak memory consumption was 486.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 302582.43 ms. Allocated memory was 855.6 MB in the beginning and 6.3 GB in the end (delta: 5.5 GB). Free memory was 279.2 MB in the beginning and 4.9 GB in the end (delta: -4.7 GB). Peak memory consumption was 811.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.interpolate.Interpolator.getInterpolants(Interpolator.java:219) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:21:18,467 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:21:18,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:21:18,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:21:18,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:21:18,507 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:21:18,509 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:21:18,511 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:21:18,514 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:21:18,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:21:18,516 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:21:18,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:21:18,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:21:18,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:21:18,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:21:18,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:21:18,532 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:21:18,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:21:18,535 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:21:18,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:21:18,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:21:18,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:21:18,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:21:18,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:21:18,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:21:18,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:21:18,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:21:18,550 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:21:18,550 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:21:18,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:21:18,552 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:21:18,553 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:21:18,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:21:18,556 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:21:18,557 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:21:18,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:21:18,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:21:18,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:21:18,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:21:18,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:21:18,562 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:21:18,563 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2020-11-29 23:21:18,589 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:21:18,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:21:18,591 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:21:18,591 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:21:18,591 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:21:18,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:21:18,592 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:21:18,592 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:21:18,592 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:21:18,593 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:21:18,593 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 23:21:18,593 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 23:21:18,593 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:21:18,594 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:21:18,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:21:18,594 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:21:18,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:21:18,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:21:18,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:21:18,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:21:18,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:21:18,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:21:18,596 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:21:18,596 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 23:21:18,597 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 23:21:18,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:21:18,597 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:21:18,598 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 23:21:18,598 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2020-11-29 23:21:18,598 INFO L138 SettingsManager]: * To the following directory=dump/ WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cd15b2fe28f5d845fe6ce5f49d4396a1215491 [2020-11-29 23:21:18,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:21:19,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:21:19,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:21:19,008 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:21:19,010 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:21:19,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/../../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2020-11-29 23:21:19,090 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/data/a0f4e9800/63f2bc0424d043c180758f6c2ab2d273/FLAG4d4d29eb9 [2020-11-29 23:21:20,191 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:21:20,193 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-media-dvb-ttusb-dec-ttusb_dec.ko.cil.out.i [2020-11-29 23:21:20,246 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/data/a0f4e9800/63f2bc0424d043c180758f6c2ab2d273/FLAG4d4d29eb9 [2020-11-29 23:21:20,540 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_62bd37fd-3158-4a0a-a87a-c9a292f518f6/bin/uautomizer/data/a0f4e9800/63f2bc0424d043c180758f6c2ab2d273 [2020-11-29 23:21:20,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:21:20,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:21:20,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:21:20,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:21:20,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:21:20,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:21:20" (1/1) ... [2020-11-29 23:21:20,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12dca8a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:21:20, skipping insertion in model container [2020-11-29 23:21:20,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:21:20" (1/1) ... [2020-11-29 23:21:20,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:21:20,727 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:21:21,967 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator has thrown an exception: java.lang.AssertionError: only flexible array member at the end can have non-constant size at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizeAndOffsetComputer.computeMemberOffset(TypeSizeAndOffsetComputer.java:583) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizeAndOffsetComputer.constructSizeTValueAndOffsets_StructAndUnion(TypeSizeAndOffsetComputer.java:304) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizeAndOffsetComputer.computeSize(TypeSizeAndOffsetComputer.java:203) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizeAndOffsetComputer.constructOffsetForField(TypeSizeAndOffsetComputer.java:133) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizeAndOffsetComputer.constructOffsetForField(TypeSizeAndOffsetComputer.java:143) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.StructHandler.handleFieldReference(StructHandler.java:139) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1388) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:270) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.result.ExpressionResultTransformer.transformDispatchDecaySwitchRexBoolToInt(ExpressionResultTransformer.java:174) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallGivenNameAndArguments(FunctionHandler.java:641) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionCallExpression(FunctionHandler.java:509) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1408) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:267) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:706) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:282) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1352) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:220) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1045) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1045) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1045) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:232) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.FunctionHandler.handleFunctionDefinition(FunctionHandler.java:372) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:1423) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:155) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.processTUchild(CHandler.java:3209) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:2292) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.CHandler.visit(CHandler.java:579) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.PRDispatcher.dispatch(PRDispatcher.java:134) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.translate(MainTranslator.java:192) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.run(MainTranslator.java:115) at de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.MainTranslator.(MainTranslator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver.finish(CACSL2BoogieTranslatorObserver.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-29 23:21:21,976 INFO L168 Benchmark]: Toolchain (without parser) took 1428.04 ms. Allocated memory was 52.4 MB in the beginning and 83.9 MB in the end (delta: 31.5 MB). Free memory was 30.0 MB in the beginning and 49.9 MB in the end (delta: -19.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:21:21,978 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 34.2 MB in the end (delta: 22.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 23:21:21,980 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1423.27 ms. Allocated memory was 52.4 MB in the beginning and 83.9 MB in the end (delta: 31.5 MB). Free memory was 29.8 MB in the beginning and 49.9 MB in the end (delta: -20.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. [2020-11-29 23:21:21,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 34.2 MB in the end (delta: 22.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1423.27 ms. Allocated memory was 52.4 MB in the beginning and 83.9 MB in the end (delta: 31.5 MB). Free memory was 29.8 MB in the beginning and 49.9 MB in the end (delta: -20.0 MB). Peak memory consumption was 24.9 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - ExceptionOrErrorResult: AssertionError: only flexible array member at the end can have non-constant size de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: AssertionError: only flexible array member at the end can have non-constant size: de.uni_freiburg.informatik.ultimate.cdt.translation.implementation.base.chandler.TypeSizeAndOffsetComputer.computeMemberOffset(TypeSizeAndOffsetComputer.java:583) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...