./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-04 05:13:07,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-04 05:13:07,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-04 05:13:07,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-04 05:13:08,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-04 05:13:08,002 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-04 05:13:08,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-04 05:13:08,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-04 05:13:08,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-04 05:13:08,012 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-04 05:13:08,013 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-04 05:13:08,014 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-04 05:13:08,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-04 05:13:08,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-04 05:13:08,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-04 05:13:08,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-04 05:13:08,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-04 05:13:08,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-04 05:13:08,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-04 05:13:08,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-04 05:13:08,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-04 05:13:08,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-04 05:13:08,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-04 05:13:08,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-04 05:13:08,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-04 05:13:08,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-04 05:13:08,036 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-04 05:13:08,037 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-04 05:13:08,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-04 05:13:08,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-04 05:13:08,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-04 05:13:08,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-04 05:13:08,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-04 05:13:08,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-04 05:13:08,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-04 05:13:08,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-04 05:13:08,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-04 05:13:08,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-04 05:13:08,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-04 05:13:08,044 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-04 05:13:08,044 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-04 05:13:08,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-04 05:13:08,073 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-04 05:13:08,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-04 05:13:08,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-04 05:13:08,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-04 05:13:08,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-04 05:13:08,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-04 05:13:08,075 INFO L138 SettingsManager]: * Use SBE=true [2021-11-04 05:13:08,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-04 05:13:08,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-04 05:13:08,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-04 05:13:08,076 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-04 05:13:08,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-04 05:13:08,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-04 05:13:08,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-04 05:13:08,077 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-04 05:13:08,077 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-04 05:13:08,077 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-04 05:13:08,077 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-04 05:13:08,077 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-04 05:13:08,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 05:13:08,078 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-04 05:13:08,078 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-04 05:13:08,078 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-04 05:13:08,078 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-04 05:13:08,078 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-04 05:13:08,078 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-04 05:13:08,078 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-04 05:13:08,079 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-04 05:13:08,079 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-04 05:13:08,079 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e3555fedd9f92961bad45780711b37c7eb42c00277e0bac6769cfc03eaec14a8 [2021-11-04 05:13:08,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-04 05:13:08,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-04 05:13:08,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-04 05:13:08,311 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-04 05:13:08,311 INFO L275 PluginConnector]: CDTParser initialized [2021-11-04 05:13:08,312 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-11-04 05:13:08,352 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7002e85b/60db6c5cbb3d4d1184a477b140f334d9/FLAG0636972dc [2021-11-04 05:13:08,896 INFO L306 CDTParser]: Found 1 translation units. [2021-11-04 05:13:08,896 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-11-04 05:13:08,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7002e85b/60db6c5cbb3d4d1184a477b140f334d9/FLAG0636972dc [2021-11-04 05:13:09,093 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7002e85b/60db6c5cbb3d4d1184a477b140f334d9 [2021-11-04 05:13:09,095 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-04 05:13:09,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-04 05:13:09,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-04 05:13:09,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-04 05:13:09,100 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-04 05:13:09,101 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:13:09" (1/1) ... [2021-11-04 05:13:09,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62dc2501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:13:09, skipping insertion in model container [2021-11-04 05:13:09,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 05:13:09" (1/1) ... [2021-11-04 05:13:09,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-04 05:13:09,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-04 05:13:09,572 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2021-11-04 05:13:09,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 05:13:09,928 INFO L203 MainTranslator]: Completed pre-run [2021-11-04 05:13:10,000 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i[88044,88057] [2021-11-04 05:13:10,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-04 05:13:10,188 INFO L208 MainTranslator]: Completed translation [2021-11-04 05:13:10,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:13:10 WrapperNode [2021-11-04 05:13:10,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-04 05:13:10,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-04 05:13:10,190 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-04 05:13:10,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-04 05:13:10,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:13:10" (1/1) ... [2021-11-04 05:13:10,251 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:13:10" (1/1) ... [2021-11-04 05:13:11,388 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-04 05:13:11,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-04 05:13:11,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-04 05:13:11,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-04 05:13:11,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:13:10" (1/1) ... [2021-11-04 05:13:11,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:13:10" (1/1) ... [2021-11-04 05:13:11,672 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:13:10" (1/1) ... [2021-11-04 05:13:11,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:13:10" (1/1) ... [2021-11-04 05:13:12,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:13:10" (1/1) ... [2021-11-04 05:13:12,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:13:10" (1/1) ... [2021-11-04 05:13:13,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:13:10" (1/1) ... [2021-11-04 05:13:13,234 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-04 05:13:13,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-04 05:13:13,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-04 05:13:13,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-04 05:13:13,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:13:10" (1/1) ... [2021-11-04 05:13:13,241 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-04 05:13:13,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-04 05:13:13,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-04 05:13:13,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-04 05:13:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-04 05:13:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-04 05:13:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-11-04 05:13:13,294 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-11-04 05:13:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-04 05:13:13,294 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-04 05:13:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-04 05:13:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-04 05:13:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-04 05:13:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-04 05:13:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-04 05:13:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-11-04 05:13:13,295 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-11-04 05:13:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-04 05:13:13,295 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-11-04 05:13:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-11-04 05:13:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-04 05:13:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-11-04 05:13:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure kmem_cache_alloc_notrace [2021-11-04 05:13:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-04 05:13:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-04 05:13:13,296 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-11-04 05:13:13,296 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-11-04 05:13:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-11-04 05:13:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-11-04 05:13:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 05:13:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-04 05:13:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-04 05:13:13,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-04 05:13:13,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-04 05:13:41,836 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-04 05:13:41,836 INFO L299 CfgBuilder]: Removed 14253 assume(true) statements. [2021-11-04 05:13:41,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:13:41 BoogieIcfgContainer [2021-11-04 05:13:41,847 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-04 05:13:41,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-04 05:13:41,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-04 05:13:41,851 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-04 05:13:41,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 05:13:09" (1/3) ... [2021-11-04 05:13:41,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401976c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:13:41, skipping insertion in model container [2021-11-04 05:13:41,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 05:13:10" (2/3) ... [2021-11-04 05:13:41,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@401976c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 05:13:41, skipping insertion in model container [2021-11-04 05:13:41,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 05:13:41" (3/3) ... [2021-11-04 05:13:41,853 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point.cil.out.i [2021-11-04 05:13:41,857 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-04 05:13:41,857 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-04 05:13:41,916 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-04 05:13:41,922 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-04 05:13:41,923 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-04 05:13:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand has 11954 states, 11918 states have (on average 1.4186105051183084) internal successors, (16907), 11937 states have internal predecessors, (16907), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-11-04 05:13:42,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-04 05:13:42,049 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:13:42,050 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:13:42,050 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-04 05:13:42,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:13:42,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1301554369, now seen corresponding path program 1 times [2021-11-04 05:13:42,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:13:42,059 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550074252] [2021-11-04 05:13:42,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:13:42,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:13:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:13:42,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 05:13:42,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:13:42,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550074252] [2021-11-04 05:13:42,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550074252] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:13:42,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:13:42,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-04 05:13:42,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992136569] [2021-11-04 05:13:42,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:13:42,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:13:42,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:13:42,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:13:42,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:13:42,581 INFO L87 Difference]: Start difference. First operand has 11954 states, 11918 states have (on average 1.4186105051183084) internal successors, (16907), 11937 states have internal predecessors, (16907), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:13:44,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:14:14,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:14:14,155 INFO L93 Difference]: Finished difference Result 31641 states and 44017 transitions. [2021-11-04 05:14:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:14:14,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-04 05:14:14,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:14:14,226 INFO L225 Difference]: With dead ends: 31641 [2021-11-04 05:14:14,226 INFO L226 Difference]: Without dead ends: 19678 [2021-11-04 05:14:14,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.37ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:14:14,272 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 13331 mSDsluCounter, 13350 mSDsCounter, 0 mSdLazyCounter, 26761 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26095.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13331 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 26765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 49.86ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26761 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30575.17ms IncrementalHoareTripleChecker+Time [2021-11-04 05:14:14,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13331 Valid, 60 Invalid, 26765 Unknown, 0 Unchecked, 49.86ms Time], IncrementalHoareTripleChecker [3 Valid, 26761 Invalid, 1 Unknown, 0 Unchecked, 30575.17ms Time] [2021-11-04 05:14:14,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19678 states. [2021-11-04 05:14:14,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19678 to 19678. [2021-11-04 05:14:14,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19678 states, 19627 states have (on average 1.3569572527640494) internal successors, (26633), 19645 states have internal predecessors, (26633), 20 states have call successors, (20), 12 states have call predecessors, (20), 12 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2021-11-04 05:14:14,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19678 states to 19678 states and 26673 transitions. [2021-11-04 05:14:14,719 INFO L78 Accepts]: Start accepts. Automaton has 19678 states and 26673 transitions. Word has length 24 [2021-11-04 05:14:14,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:14:14,720 INFO L470 AbstractCegarLoop]: Abstraction has 19678 states and 26673 transitions. [2021-11-04 05:14:14,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:14:14,721 INFO L276 IsEmpty]: Start isEmpty. Operand 19678 states and 26673 transitions. [2021-11-04 05:14:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-04 05:14:14,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:14:14,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:14:14,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-04 05:14:14,728 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-04 05:14:14,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:14:14,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1536576598, now seen corresponding path program 1 times [2021-11-04 05:14:14,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:14:14,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291181919] [2021-11-04 05:14:14,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:14:14,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:14:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:14:14,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 05:14:14,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:14:14,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291181919] [2021-11-04 05:14:14,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291181919] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:14:14,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:14:14,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:14:14,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261294191] [2021-11-04 05:14:14,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:14:14,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:14:14,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:14:14,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:14:14,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:14:14,916 INFO L87 Difference]: Start difference. First operand 19678 states and 26673 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:14:16,959 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:14:57,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:14:57,414 INFO L93 Difference]: Finished difference Result 39256 states and 53239 transitions. [2021-11-04 05:14:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:14:57,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-11-04 05:14:57,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:14:57,554 INFO L225 Difference]: With dead ends: 39256 [2021-11-04 05:14:57,554 INFO L226 Difference]: Without dead ends: 39224 [2021-11-04 05:14:57,580 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.52ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:14:57,582 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 13386 mSDsluCounter, 13311 mSDsCounter, 0 mSdLazyCounter, 26704 mSolverCounterSat, 15 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35864.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13386 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 26720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 79.74ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 26704 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 41391.01ms IncrementalHoareTripleChecker+Time [2021-11-04 05:14:57,583 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13386 Valid, 50 Invalid, 26720 Unknown, 0 Unchecked, 79.74ms Time], IncrementalHoareTripleChecker [15 Valid, 26704 Invalid, 1 Unknown, 0 Unchecked, 41391.01ms Time] [2021-11-04 05:14:57,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39224 states. [2021-11-04 05:14:58,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39224 to 39220. [2021-11-04 05:14:58,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39220 states, 39139 states have (on average 1.357290681928511) internal successors, (53123), 39155 states have internal predecessors, (53123), 40 states have call successors, (40), 24 states have call predecessors, (40), 24 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-11-04 05:14:58,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39220 states to 39220 states and 53203 transitions. [2021-11-04 05:14:58,277 INFO L78 Accepts]: Start accepts. Automaton has 39220 states and 53203 transitions. Word has length 27 [2021-11-04 05:14:58,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:14:58,278 INFO L470 AbstractCegarLoop]: Abstraction has 39220 states and 53203 transitions. [2021-11-04 05:14:58,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 2 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:14:58,278 INFO L276 IsEmpty]: Start isEmpty. Operand 39220 states and 53203 transitions. [2021-11-04 05:14:58,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-04 05:14:58,280 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:14:58,280 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:14:58,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-04 05:14:58,280 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-04 05:14:58,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:14:58,281 INFO L85 PathProgramCache]: Analyzing trace with hash 389265743, now seen corresponding path program 1 times [2021-11-04 05:14:58,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:14:58,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608336205] [2021-11-04 05:14:58,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:14:58,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:14:58,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:14:58,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 05:14:58,421 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:14:58,421 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608336205] [2021-11-04 05:14:58,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608336205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:14:58,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:14:58,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:14:58,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107810778] [2021-11-04 05:14:58,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:14:58,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:14:58,425 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:14:58,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:14:58,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:14:58,425 INFO L87 Difference]: Start difference. First operand 39220 states and 53203 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:15:00,473 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:15:51,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:15:51,557 INFO L93 Difference]: Finished difference Result 117512 states and 159453 transitions. [2021-11-04 05:15:51,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:15:51,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-11-04 05:15:51,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:15:51,835 INFO L225 Difference]: With dead ends: 117512 [2021-11-04 05:15:51,835 INFO L226 Difference]: Without dead ends: 78349 [2021-11-04 05:15:51,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.74ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:15:51,948 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 13389 mSDsluCounter, 13326 mSDsCounter, 0 mSdLazyCounter, 26720 mSolverCounterSat, 9 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44013.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13389 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 26730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 53.53ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 26720 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51320.52ms IncrementalHoareTripleChecker+Time [2021-11-04 05:15:51,949 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13389 Valid, 50 Invalid, 26730 Unknown, 0 Unchecked, 53.53ms Time], IncrementalHoareTripleChecker [9 Valid, 26720 Invalid, 1 Unknown, 0 Unchecked, 51320.52ms Time] [2021-11-04 05:15:52,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78349 states. [2021-11-04 05:15:53,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78349 to 78329. [2021-11-04 05:15:53,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78329 states, 78184 states have (on average 1.357528394556431) internal successors, (106137), 78200 states have internal predecessors, (106137), 80 states have call successors, (80), 48 states have call predecessors, (80), 48 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2021-11-04 05:15:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78329 states to 78329 states and 106297 transitions. [2021-11-04 05:15:53,708 INFO L78 Accepts]: Start accepts. Automaton has 78329 states and 106297 transitions. Word has length 28 [2021-11-04 05:15:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:15:53,709 INFO L470 AbstractCegarLoop]: Abstraction has 78329 states and 106297 transitions. [2021-11-04 05:15:53,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:15:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 78329 states and 106297 transitions. [2021-11-04 05:15:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-04 05:15:53,711 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:15:53,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:15:53,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-04 05:15:53,711 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-04 05:15:53,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:15:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash -513397760, now seen corresponding path program 1 times [2021-11-04 05:15:53,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:15:53,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31558307] [2021-11-04 05:15:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:15:53,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:15:53,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:15:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 05:15:53,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:15:53,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31558307] [2021-11-04 05:15:53,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31558307] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:15:53,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:15:53,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-04 05:15:53,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950794474] [2021-11-04 05:15:53,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:15:53,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-04 05:15:53,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:15:53,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-04 05:15:53,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:15:53,886 INFO L87 Difference]: Start difference. First operand 78329 states and 106297 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:15:56,090 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:16:53,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:16:53,429 INFO L93 Difference]: Finished difference Result 234856 states and 318752 transitions. [2021-11-04 05:16:53,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-04 05:16:53,430 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-04 05:16:53,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:16:54,023 INFO L225 Difference]: With dead ends: 234856 [2021-11-04 05:16:54,023 INFO L226 Difference]: Without dead ends: 156582 [2021-11-04 05:16:54,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.96ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-04 05:16:54,134 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 13382 mSDsluCounter, 13345 mSDsCounter, 0 mSdLazyCounter, 26737 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 48277.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 13382 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 26745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.15ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 26737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 56857.16ms IncrementalHoareTripleChecker+Time [2021-11-04 05:16:54,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13382 Valid, 50 Invalid, 26745 Unknown, 0 Unchecked, 54.15ms Time], IncrementalHoareTripleChecker [7 Valid, 26737 Invalid, 1 Unknown, 0 Unchecked, 56857.16ms Time] [2021-11-04 05:16:54,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156582 states. [2021-11-04 05:16:56,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156582 to 156545. [2021-11-04 05:16:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156545 states, 156272 states have (on average 1.3576456434933961) internal successors, (212162), 156288 states have internal predecessors, (212162), 160 states have call successors, (160), 96 states have call predecessors, (160), 96 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-04 05:16:57,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156545 states to 156545 states and 212482 transitions. [2021-11-04 05:16:57,146 INFO L78 Accepts]: Start accepts. Automaton has 156545 states and 212482 transitions. Word has length 37 [2021-11-04 05:16:57,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:16:57,146 INFO L470 AbstractCegarLoop]: Abstraction has 156545 states and 212482 transitions. [2021-11-04 05:16:57,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:16:57,147 INFO L276 IsEmpty]: Start isEmpty. Operand 156545 states and 212482 transitions. [2021-11-04 05:16:57,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-04 05:16:57,148 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:16:57,148 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:16:57,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-04 05:16:57,149 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-04 05:16:57,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:16:57,149 INFO L85 PathProgramCache]: Analyzing trace with hash 666285678, now seen corresponding path program 1 times [2021-11-04 05:16:57,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:16:57,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924441200] [2021-11-04 05:16:57,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:16:57,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:16:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:16:58,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 05:16:58,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:16:58,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924441200] [2021-11-04 05:16:58,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924441200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:16:58,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:16:58,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-04 05:16:58,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412731563] [2021-11-04 05:16:58,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:16:58,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-04 05:16:58,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:16:58,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-04 05:16:58,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-04 05:16:58,067 INFO L87 Difference]: Start difference. First operand 156545 states and 212482 transitions. Second operand has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:17:00,128 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-04 05:20:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-04 05:20:02,628 INFO L93 Difference]: Finished difference Result 544113 states and 737675 transitions. [2021-11-04 05:20:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-04 05:20:02,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-04 05:20:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-04 05:20:03,626 INFO L225 Difference]: With dead ends: 544113 [2021-11-04 05:20:03,626 INFO L226 Difference]: Without dead ends: 387625 [2021-11-04 05:20:04,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 236.55ms TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2021-11-04 05:20:04,079 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 39479 mSDsluCounter, 113140 mSDsCounter, 0 mSdLazyCounter, 132329 mSolverCounterSat, 31 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 148441.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39481 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 132361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 420.28ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 132329 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 175597.50ms IncrementalHoareTripleChecker+Time [2021-11-04 05:20:04,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39481 Valid, 179 Invalid, 132361 Unknown, 0 Unchecked, 420.28ms Time], IncrementalHoareTripleChecker [31 Valid, 132329 Invalid, 1 Unknown, 0 Unchecked, 175597.50ms Time] [2021-11-04 05:20:04,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387625 states. [2021-11-04 05:20:08,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387625 to 156585. [2021-11-04 05:20:09,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156585 states, 156312 states have (on average 1.357592507293106) internal successors, (212208), 156328 states have internal predecessors, (212208), 160 states have call successors, (160), 96 states have call predecessors, (160), 96 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2021-11-04 05:20:09,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156585 states to 156585 states and 212528 transitions. [2021-11-04 05:20:09,477 INFO L78 Accepts]: Start accepts. Automaton has 156585 states and 212528 transitions. Word has length 39 [2021-11-04 05:20:09,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-04 05:20:09,477 INFO L470 AbstractCegarLoop]: Abstraction has 156585 states and 212528 transitions. [2021-11-04 05:20:09,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.875) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:20:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 156585 states and 212528 transitions. [2021-11-04 05:20:09,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-11-04 05:20:09,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-04 05:20:09,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-04 05:20:09,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-04 05:20:09,480 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-04 05:20:09,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-04 05:20:09,481 INFO L85 PathProgramCache]: Analyzing trace with hash -395841258, now seen corresponding path program 1 times [2021-11-04 05:20:09,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-04 05:20:09,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782464324] [2021-11-04 05:20:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-04 05:20:09,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-04 05:20:11,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-04 05:20:11,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-04 05:20:11,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-04 05:20:11,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782464324] [2021-11-04 05:20:11,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782464324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-04 05:20:11,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-04 05:20:11,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-04 05:20:11,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902133667] [2021-11-04 05:20:11,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-04 05:20:11,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-04 05:20:11,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-04 05:20:11,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-04 05:20:11,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-04 05:20:11,542 INFO L87 Difference]: Start difference. First operand 156585 states and 212528 transitions. Second operand has 10 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-04 05:20:13,709 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []