./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.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 bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 04:07:13,527 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 04:07:13,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 04:07:13,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 04:07:13,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 04:07:13,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 04:07:13,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 04:07:13,579 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 04:07:13,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 04:07:13,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 04:07:13,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 04:07:13,591 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 04:07:13,591 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 04:07:13,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 04:07:13,596 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 04:07:13,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 04:07:13,602 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 04:07:13,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 04:07:13,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 04:07:13,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 04:07:13,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 04:07:13,616 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 04:07:13,617 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 04:07:13,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 04:07:13,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 04:07:13,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 04:07:13,630 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 04:07:13,636 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 04:07:13,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 04:07:13,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 04:07:13,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 04:07:13,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 04:07:13,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 04:07:13,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 04:07:13,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 04:07:13,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 04:07:13,645 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 04:07:13,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 04:07:13,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 04:07:13,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 04:07:13,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 04:07:13,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-28 04:07:13,695 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 04:07:13,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 04:07:13,697 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 04:07:13,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 04:07:13,698 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 04:07:13,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 04:07:13,700 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 04:07:13,700 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 04:07:13,700 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 04:07:13,700 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 04:07:13,701 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 04:07:13,702 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 04:07:13,702 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 04:07:13,702 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 04:07:13,702 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 04:07:13,703 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 04:07:13,703 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 04:07:13,703 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 04:07:13,703 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 04:07:13,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 04:07:13,704 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 04:07:13,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:07:13,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 04:07:13,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 04:07:13,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 04:07:13,705 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 04:07:13,705 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 04:07:13,705 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 04:07:13,705 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 04:07:13,705 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 04:07:13,706 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf5e73d985bafa5e008f16fba6fb54da90c4b127699bd918a748611ea9b79793 [2021-12-28 04:07:14,072 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 04:07:14,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 04:07:14,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 04:07:14,109 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 04:07:14,110 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 04:07:14,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-28 04:07:14,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3156e9c1/d2711a68d5334e04b6f73ca2cba3cf1d/FLAG9687994d6 [2021-12-28 04:07:14,981 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 04:07:14,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-28 04:07:15,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3156e9c1/d2711a68d5334e04b6f73ca2cba3cf1d/FLAG9687994d6 [2021-12-28 04:07:15,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3156e9c1/d2711a68d5334e04b6f73ca2cba3cf1d [2021-12-28 04:07:15,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 04:07:15,072 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 04:07:15,075 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 04:07:15,075 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 04:07:15,078 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 04:07:15,079 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:07:15" (1/1) ... [2021-12-28 04:07:15,081 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63315022 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:15, skipping insertion in model container [2021-12-28 04:07:15,081 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 04:07:15" (1/1) ... [2021-12-28 04:07:15,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 04:07:15,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 04:07:16,180 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-12-28 04:07:16,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:07:16,287 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 04:07:16,592 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i[158797,158810] [2021-12-28 04:07:16,607 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 04:07:16,688 INFO L208 MainTranslator]: Completed translation [2021-12-28 04:07:16,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:16 WrapperNode [2021-12-28 04:07:16,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 04:07:16,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 04:07:16,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 04:07:16,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 04:07:16,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:16" (1/1) ... [2021-12-28 04:07:16,776 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:16" (1/1) ... [2021-12-28 04:07:16,903 INFO L137 Inliner]: procedures = 189, calls = 1289, calls flagged for inlining = 74, calls inlined = 74, statements flattened = 3243 [2021-12-28 04:07:16,904 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 04:07:16,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 04:07:16,905 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 04:07:16,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 04:07:16,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:16" (1/1) ... [2021-12-28 04:07:16,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:16" (1/1) ... [2021-12-28 04:07:16,981 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:16" (1/1) ... [2021-12-28 04:07:16,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:16" (1/1) ... [2021-12-28 04:07:17,112 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:16" (1/1) ... [2021-12-28 04:07:17,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:16" (1/1) ... [2021-12-28 04:07:17,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:16" (1/1) ... [2021-12-28 04:07:17,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 04:07:17,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 04:07:17,220 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 04:07:17,220 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 04:07:17,221 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:16" (1/1) ... [2021-12-28 04:07:17,227 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 04:07:17,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 04:07:17,257 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) [2021-12-28 04:07:17,275 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 [2021-12-28 04:07:17,290 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_free [2021-12-28 04:07:17,290 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_free [2021-12-28 04:07:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-28 04:07:17,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-12-28 04:07:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2021-12-28 04:07:17,291 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2021-12-28 04:07:17,291 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-12-28 04:07:17,292 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-12-28 04:07:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-28 04:07:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-28 04:07:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-28 04:07:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-28 04:07:17,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-28 04:07:17,292 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 04:07:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-28 04:07:17,293 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-28 04:07:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure get_gadget_data [2021-12-28 04:07:17,293 INFO L138 BoogieDeclarations]: Found implementation of procedure get_gadget_data [2021-12-28 04:07:17,293 INFO L130 BoogieDeclarations]: Found specification of procedure printer_poll [2021-12-28 04:07:17,293 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_poll [2021-12-28 04:07:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-28 04:07:17,294 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-28 04:07:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_free_request [2021-12-28 04:07:17,294 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_free_request [2021-12-28 04:07:17,294 INFO L130 BoogieDeclarations]: Found specification of procedure printer_reset_interface [2021-12-28 04:07:17,294 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_reset_interface [2021-12-28 04:07:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-28 04:07:17,295 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-28 04:07:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-28 04:07:17,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-28 04:07:17,295 INFO L130 BoogieDeclarations]: Found specification of procedure printer_soft_reset [2021-12-28 04:07:17,295 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_soft_reset [2021-12-28 04:07:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_class [2021-12-28 04:07:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_class [2021-12-28 04:07:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-12-28 04:07:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-12-28 04:07:17,296 INFO L130 BoogieDeclarations]: Found specification of procedure set_printer_interface [2021-12-28 04:07:17,296 INFO L138 BoogieDeclarations]: Found implementation of procedure set_printer_interface [2021-12-28 04:07:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rx_reqs [2021-12-28 04:07:17,297 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rx_reqs [2021-12-28 04:07:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure class_destroy [2021-12-28 04:07:17,297 INFO L138 BoogieDeclarations]: Found implementation of procedure class_destroy [2021-12-28 04:07:17,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 04:07:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-28 04:07:17,298 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-28 04:07:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-28 04:07:17,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-28 04:07:17,298 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_queue [2021-12-28 04:07:17,298 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_queue [2021-12-28 04:07:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure set_interface [2021-12-28 04:07:17,299 INFO L138 BoogieDeclarations]: Found implementation of procedure set_interface [2021-12-28 04:07:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup_complete [2021-12-28 04:07:17,299 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup_complete [2021-12-28 04:07:17,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-28 04:07:17,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-28 04:07:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-28 04:07:17,300 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-28 04:07:17,300 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_vbus_draw [2021-12-28 04:07:17,301 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_vbus_draw [2021-12-28 04:07:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-28 04:07:17,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-28 04:07:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-28 04:07:17,301 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-28 04:07:17,301 INFO L130 BoogieDeclarations]: Found specification of procedure printer_write [2021-12-28 04:07:17,302 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_write [2021-12-28 04:07:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 04:07:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2021-12-28 04:07:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure printer_unbind [2021-12-28 04:07:17,302 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_unbind [2021-12-28 04:07:17,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-28 04:07:17,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-28 04:07:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-28 04:07:17,303 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-28 04:07:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure printer_close [2021-12-28 04:07:17,303 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_close [2021-12-28 04:07:17,303 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2021-12-28 04:07:17,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2021-12-28 04:07:17,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 04:07:17,304 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2021-12-28 04:07:17,304 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2021-12-28 04:07:17,304 INFO L130 BoogieDeclarations]: Found specification of procedure printer_fsync [2021-12-28 04:07:17,304 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_fsync [2021-12-28 04:07:17,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-28 04:07:17,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-28 04:07:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 04:07:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 04:07:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-28 04:07:17,305 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-28 04:07:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-28 04:07:17,305 INFO L130 BoogieDeclarations]: Found specification of procedure init_utsname [2021-12-28 04:07:17,306 INFO L138 BoogieDeclarations]: Found implementation of procedure init_utsname [2021-12-28 04:07:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_enable [2021-12-28 04:07:17,306 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_enable [2021-12-28 04:07:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-28 04:07:17,306 INFO L130 BoogieDeclarations]: Found specification of procedure printer_open [2021-12-28 04:07:17,306 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_open [2021-12-28 04:07:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure printer_bind [2021-12-28 04:07:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_bind [2021-12-28 04:07:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-28 04:07:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-28 04:07:17,307 INFO L130 BoogieDeclarations]: Found specification of procedure strlcpy [2021-12-28 04:07:17,307 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcpy [2021-12-28 04:07:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-28 04:07:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-28 04:07:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-28 04:07:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-28 04:07:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-28 04:07:17,308 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-28 04:07:17,308 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2021-12-28 04:07:17,309 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2021-12-28 04:07:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_autoconfig [2021-12-28 04:07:17,309 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_autoconfig [2021-12-28 04:07:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 04:07:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-28 04:07:17,309 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-28 04:07:17,310 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-28 04:07:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-28 04:07:17,310 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-28 04:07:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-28 04:07:17,310 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-28 04:07:17,310 INFO L130 BoogieDeclarations]: Found specification of procedure printer_setup [2021-12-28 04:07:17,311 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_setup [2021-12-28 04:07:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-28 04:07:17,311 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-28 04:07:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_chrdev_region [2021-12-28 04:07:17,311 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_chrdev_region [2021-12-28 04:07:17,311 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-28 04:07:17,311 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-28 04:07:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-28 04:07:17,312 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-28 04:07:17,312 INFO L130 BoogieDeclarations]: Found specification of procedure set_gadget_data [2021-12-28 04:07:17,312 INFO L138 BoogieDeclarations]: Found implementation of procedure set_gadget_data [2021-12-28 04:07:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure printer_req_alloc [2021-12-28 04:07:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure printer_req_alloc [2021-12-28 04:07:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 04:07:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-28 04:07:17,313 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-28 04:07:17,313 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-28 04:07:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_disable [2021-12-28 04:07:17,314 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_disable [2021-12-28 04:07:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-28 04:07:17,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-28 04:07:17,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_region [2021-12-28 04:07:17,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_region [2021-12-28 04:07:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 04:07:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-28 04:07:17,315 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-28 04:07:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-28 04:07:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-28 04:07:17,315 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-28 04:07:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 04:07:17,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 04:07:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-28 04:07:17,316 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-28 04:07:17,894 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 04:07:17,899 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 04:07:18,085 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-28 04:07:32,219 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 04:07:32,239 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 04:07:32,240 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 04:07:32,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:07:32 BoogieIcfgContainer [2021-12-28 04:07:32,245 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 04:07:32,246 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 04:07:32,246 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 04:07:32,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 04:07:32,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 04:07:15" (1/3) ... [2021-12-28 04:07:32,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507a3aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:07:32, skipping insertion in model container [2021-12-28 04:07:32,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 04:07:16" (2/3) ... [2021-12-28 04:07:32,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507a3aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 04:07:32, skipping insertion in model container [2021-12-28 04:07:32,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 04:07:32" (3/3) ... [2021-12-28 04:07:32,252 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-2b9ec6c-1-106_1a-drivers--usb--gadget--g_printer.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-28 04:07:32,257 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 04:07:32,257 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 04:07:32,309 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 04:07:32,315 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 [2021-12-28 04:07:32,315 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-28 04:07:32,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 1227 states, 835 states have (on average 1.362874251497006) internal successors, (1138), 878 states have internal predecessors, (1138), 323 states have call successors, (323), 68 states have call predecessors, (323), 67 states have return successors, (318), 315 states have call predecessors, (318), 318 states have call successors, (318) [2021-12-28 04:07:32,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-28 04:07:32,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:07:32,373 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:07:32,374 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:07:32,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:07:32,379 INFO L85 PathProgramCache]: Analyzing trace with hash -2026460203, now seen corresponding path program 1 times [2021-12-28 04:07:32,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:07:32,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033513203] [2021-12-28 04:07:32,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:07:32,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:07:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:07:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:07:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:33,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:07:33,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:33,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:33,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:07:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:07:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:33,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:33,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 04:07:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:33,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 04:07:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 04:07:33,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 04:07:33,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:33,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 04:07:33,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 04:07:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:33,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-28 04:07:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-28 04:07:33,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:07:33,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033513203] [2021-12-28 04:07:33,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033513203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:07:33,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:07:33,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 04:07:33,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078591319] [2021-12-28 04:07:33,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:07:33,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 04:07:33,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:07:33,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 04:07:33,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-28 04:07:33,555 INFO L87 Difference]: Start difference. First operand has 1227 states, 835 states have (on average 1.362874251497006) internal successors, (1138), 878 states have internal predecessors, (1138), 323 states have call successors, (323), 68 states have call predecessors, (323), 67 states have return successors, (318), 315 states have call predecessors, (318), 318 states have call successors, (318) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 04:07:35,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:07:37,658 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:07:43,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:07:43,506 INFO L93 Difference]: Finished difference Result 2859 states and 4316 transitions. [2021-12-28 04:07:43,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 04:07:43,509 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 171 [2021-12-28 04:07:43,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:07:43,539 INFO L225 Difference]: With dead ends: 2859 [2021-12-28 04:07:43,540 INFO L226 Difference]: Without dead ends: 1625 [2021-12-28 04:07:43,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:07:43,553 INFO L933 BasicCegarLoop]: 1638 mSDtfsCounter, 1892 mSDsluCounter, 1476 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 1911 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 3114 SdHoareTripleChecker+Invalid, 2992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1911 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2021-12-28 04:07:43,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1971 Valid, 3114 Invalid, 2992 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1911 Valid, 1079 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2021-12-28 04:07:43,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2021-12-28 04:07:43,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1215. [2021-12-28 04:07:43,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1215 states, 830 states have (on average 1.355421686746988) internal successors, (1125), 866 states have internal predecessors, (1125), 318 states have call successors, (318), 67 states have call predecessors, (318), 66 states have return successors, (305), 302 states have call predecessors, (305), 305 states have call successors, (305) [2021-12-28 04:07:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1215 states to 1215 states and 1748 transitions. [2021-12-28 04:07:43,705 INFO L78 Accepts]: Start accepts. Automaton has 1215 states and 1748 transitions. Word has length 171 [2021-12-28 04:07:43,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:07:43,705 INFO L470 AbstractCegarLoop]: Abstraction has 1215 states and 1748 transitions. [2021-12-28 04:07:43,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 2 states have internal predecessors, (43), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 04:07:43,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1215 states and 1748 transitions. [2021-12-28 04:07:43,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-12-28 04:07:43,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:07:43,720 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:07:43,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 04:07:43,721 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:07:43,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:07:43,721 INFO L85 PathProgramCache]: Analyzing trace with hash -491852215, now seen corresponding path program 1 times [2021-12-28 04:07:43,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:07:43,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588322724] [2021-12-28 04:07:43,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:07:43,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:07:43,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:07:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:44,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:07:44,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:07:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:07:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:44,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:07:44,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 04:07:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 04:07:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 04:07:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 04:07:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 04:07:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 04:07:44,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-28 04:07:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:44,462 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-28 04:07:44,462 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:07:44,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588322724] [2021-12-28 04:07:44,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588322724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:07:44,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:07:44,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 04:07:44,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038539217] [2021-12-28 04:07:44,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:07:44,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 04:07:44,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:07:44,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 04:07:44,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:07:44,471 INFO L87 Difference]: Start difference. First operand 1215 states and 1748 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 04:07:46,504 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:07:58,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 04:07:58,761 INFO L93 Difference]: Finished difference Result 3188 states and 4819 transitions. [2021-12-28 04:07:58,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 04:07:58,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 171 [2021-12-28 04:07:58,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 04:07:58,784 INFO L225 Difference]: With dead ends: 3188 [2021-12-28 04:07:58,785 INFO L226 Difference]: Without dead ends: 3164 [2021-12-28 04:07:58,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-28 04:07:58,788 INFO L933 BasicCegarLoop]: 1811 mSDtfsCounter, 4810 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 2631 mSolverCounterSat, 3249 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5097 SdHoareTripleChecker+Valid, 4382 SdHoareTripleChecker+Invalid, 5881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3249 IncrementalHoareTripleChecker+Valid, 2631 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2021-12-28 04:07:58,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5097 Valid, 4382 Invalid, 5881 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3249 Valid, 2631 Invalid, 1 Unknown, 0 Unchecked, 13.7s Time] [2021-12-28 04:07:58,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3164 states. [2021-12-28 04:07:58,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3164 to 2343. [2021-12-28 04:07:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 1610 states have (on average 1.3571428571428572) internal successors, (2185), 1671 states have internal predecessors, (2185), 604 states have call successors, (604), 130 states have call predecessors, (604), 128 states have return successors, (592), 583 states have call predecessors, (592), 592 states have call successors, (592) [2021-12-28 04:07:58,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 3381 transitions. [2021-12-28 04:07:58,903 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 3381 transitions. Word has length 171 [2021-12-28 04:07:58,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 04:07:58,907 INFO L470 AbstractCegarLoop]: Abstraction has 2343 states and 3381 transitions. [2021-12-28 04:07:58,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 04:07:58,908 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 3381 transitions. [2021-12-28 04:07:58,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-28 04:07:58,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 04:07:58,913 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 04:07:58,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 04:07:58,913 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-28 04:07:58,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 04:07:58,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1931608669, now seen corresponding path program 1 times [2021-12-28 04:07:58,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 04:07:58,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219911823] [2021-12-28 04:07:58,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 04:07:58,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 04:07:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-28 04:07:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:59,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-28 04:07:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-28 04:07:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-28 04:07:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:59,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-28 04:07:59,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:59,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-28 04:07:59,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-28 04:07:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-28 04:07:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-28 04:07:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-28 04:07:59,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-28 04:07:59,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-28 04:07:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-28 04:07:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-28 04:07:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 04:07:59,602 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-28 04:07:59,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 04:07:59,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219911823] [2021-12-28 04:07:59,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219911823] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 04:07:59,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 04:07:59,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-28 04:07:59,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608830802] [2021-12-28 04:07:59,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 04:07:59,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-28 04:07:59,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 04:07:59,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-28 04:07:59,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-28 04:07:59,605 INFO L87 Difference]: Start difference. First operand 2343 states and 3381 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-28 04:08:01,670 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:08:03,678 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:08:05,698 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-28 04:08:07,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []