./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.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 1848e360a16ec6531e7d7aea690ab68ac7295c6b0bdec191a41fa9ee0518b66d --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:41:27,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:41:27,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:41:27,217 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:41:27,218 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:41:27,221 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:41:27,222 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:41:27,225 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:41:27,227 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:41:27,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:41:27,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:41:27,233 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:41:27,233 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:41:27,236 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:41:27,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:41:27,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:41:27,244 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:41:27,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:41:27,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:41:27,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:41:27,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:41:27,254 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:41:27,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:41:27,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:41:27,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:41:27,264 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:41:27,265 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:41:27,266 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:41:27,271 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:41:27,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:41:27,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:41:27,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:41:27,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:41:27,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:41:27,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:41:27,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:41:27,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:41:27,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:41:27,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:41:27,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:41:27,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:41:27,280 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:41:27,303 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:41:27,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:41:27,304 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:41:27,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:41:27,305 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:41:27,305 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:41:27,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:41:27,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:41:27,306 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:41:27,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:41:27,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:41:27,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:41:27,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:41:27,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:41:27,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:41:27,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:41:27,307 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:41:27,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:41:27,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:41:27,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:41:27,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:41:27,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:41:27,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:41:27,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:41:27,308 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:41:27,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:41:27,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:41:27,309 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:41:27,309 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:41:27,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:41:27,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:41:27,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1848e360a16ec6531e7d7aea690ab68ac7295c6b0bdec191a41fa9ee0518b66d [2021-12-14 17:41:27,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:41:27,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:41:27,561 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:41:27,562 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:41:27,563 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:41:27,564 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2021-12-14 17:41:27,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36c8b5e25/ca4811a673614f9ea63e5d2192eeacce/FLAG58ee3d8ac [2021-12-14 17:41:28,361 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:41:28,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2021-12-14 17:41:28,411 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36c8b5e25/ca4811a673614f9ea63e5d2192eeacce/FLAG58ee3d8ac [2021-12-14 17:41:28,435 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36c8b5e25/ca4811a673614f9ea63e5d2192eeacce [2021-12-14 17:41:28,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:41:28,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:41:28,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:41:28,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:41:28,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:41:28,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:41:28" (1/1) ... [2021-12-14 17:41:28,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d40fd04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:28, skipping insertion in model container [2021-12-14 17:41:28,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:41:28" (1/1) ... [2021-12-14 17:41:28,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:41:28,572 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:41:29,559 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i[196736,196749] [2021-12-14 17:41:30,187 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:41:30,212 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:41:30,363 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i[196736,196749] [2021-12-14 17:41:30,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:41:30,613 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:41:30,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:30 WrapperNode [2021-12-14 17:41:30,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:41:30,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:41:30,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:41:30,617 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:41:30,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:30" (1/1) ... [2021-12-14 17:41:30,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:30" (1/1) ... [2021-12-14 17:41:30,837 INFO L137 Inliner]: procedures = 201, calls = 1494, calls flagged for inlining = 91, calls inlined = 86, statements flattened = 2595 [2021-12-14 17:41:30,838 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:41:30,840 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:41:30,840 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:41:30,840 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:41:30,847 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:30" (1/1) ... [2021-12-14 17:41:30,848 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:30" (1/1) ... [2021-12-14 17:41:30,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:30" (1/1) ... [2021-12-14 17:41:30,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:30" (1/1) ... [2021-12-14 17:41:30,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:30" (1/1) ... [2021-12-14 17:41:30,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:30" (1/1) ... [2021-12-14 17:41:31,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:30" (1/1) ... [2021-12-14 17:41:31,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:41:31,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:41:31,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:41:31,037 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:41:31,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:30" (1/1) ... [2021-12-14 17:41:31,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:41:31,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:41:31,073 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) [2021-12-14 17:41:31,091 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 [2021-12-14 17:41:31,119 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-14 17:41:31,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-14 17:41:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_free_iso_urbs [2021-12-14 17:41:31,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_free_iso_urbs [2021-12-14 17:41:31,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_12 [2021-12-14 17:41:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_12 [2021-12-14 17:41:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-14 17:41:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-14 17:41:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-14 17:41:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-14 17:41:31,121 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_init_dvb [2021-12-14 17:41:31,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_init_dvb [2021-12-14 17:41:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-14 17:41:31,122 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-14 17:41:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-12-14 17:41:31,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-12-14 17:41:31,122 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2021-12-14 17:41:31,122 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2021-12-14 17:41:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:41:31,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:41:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_sec_feed [2021-12-14 17:41:31,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_sec_feed [2021-12-14 17:41:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-12-14 17:41:31,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-12-14 17:41:31,123 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible_nested [2021-12-14 17:41:31,124 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible_nested [2021-12-14 17:41:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_iso_xfer [2021-12-14 17:41:31,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_iso_xfer [2021-12-14 17:41:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-14 17:41:31,124 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-14 17:41:31,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-14 17:41:31,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-14 17:41:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-14 17:41:31,125 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-14 17:41:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-14 17:41:31,125 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-14 17:41:31,125 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2021-12-14 17:41:31,126 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2021-12-14 17:41:31,126 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-12-14 17:41:31,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-12-14 17:41:31,126 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-14 17:41:31,127 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-14 17:41:31,127 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_process_urb [2021-12-14 17:41:31,127 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_process_urb [2021-12-14 17:41:31,127 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-14 17:41:31,127 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2021-12-14 17:41:31,128 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2021-12-14 17:41:31,128 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-14 17:41:31,128 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-14 17:41:31,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:41:31,128 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-14 17:41:31,129 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-14 17:41:31,129 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_feed [2021-12-14 17:41:31,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_feed [2021-12-14 17:41:31,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:41:31,130 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:41:31,130 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_probe [2021-12-14 17:41:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_probe [2021-12-14 17:41:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2021-12-14 17:41:31,131 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2021-12-14 17:41:31,131 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2021-12-14 17:41:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2021-12-14 17:41:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_start_ts_feed [2021-12-14 17:41:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_start_ts_feed [2021-12-14 17:41:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-14 17:41:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-14 17:41:31,132 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:41:31,132 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:41:31,133 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-14 17:41:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-14 17:41:31,133 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_dvb [2021-12-14 17:41:31,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_dvb [2021-12-14 17:41:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-14 17:41:31,134 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-14 17:41:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_model [2021-12-14 17:41:31,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_model [2021-12-14 17:41:31,134 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-12-14 17:41:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-12-14 17:41:31,135 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2021-12-14 17:41:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2021-12-14 17:41:31,135 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_stop_iso_xfer [2021-12-14 17:41:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_stop_iso_xfer [2021-12-14 17:41:31,135 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_filter_pes2ts_init [2021-12-14 17:41:31,135 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_filter_pes2ts_init [2021-12-14 17:41:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-14 17:41:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-14 17:41:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-14 17:41:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-12-14 17:41:31,136 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-12-14 17:41:31,136 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-14 17:41:31,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-14 17:41:31,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-14 17:41:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_3 [2021-12-14 17:41:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_3 [2021-12-14 17:41:31,138 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_4 [2021-12-14 17:41:31,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_4 [2021-12-14 17:41:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2021-12-14 17:41:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2021-12-14 17:41:31,139 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2021-12-14 17:41:31,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2021-12-14 17:41:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-14 17:41:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~X~$Pointer$~X~int~TO~int [2021-12-14 17:41:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2021-12-14 17:41:31,140 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2021-12-14 17:41:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:41:31,140 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-14 17:41:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-14 17:41:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 17:41:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 17:41:31,141 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-14 17:41:31,141 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-14 17:41:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:41:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:41:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-12-14 17:41:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-12-14 17:41:31,142 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_send_command [2021-12-14 17:41:31,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_send_command [2021-12-14 17:41:31,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:41:31,144 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_setup_urbs [2021-12-14 17:41:31,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_setup_urbs [2021-12-14 17:41:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2021-12-14 17:41:31,146 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2021-12-14 17:41:31,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-14 17:41:31,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-14 17:41:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_set_pids [2021-12-14 17:41:31,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_set_pids [2021-12-14 17:41:31,148 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_exit_usb [2021-12-14 17:41:31,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_exit_usb [2021-12-14 17:41:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:41:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:41:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-14 17:41:31,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-14 17:41:31,175 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:41:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-14 17:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-14 17:41:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-14 17:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_init_rc [2021-12-14 17:41:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_init_rc [2021-12-14 17:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2021-12-14 17:41:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2021-12-14 17:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:41:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-14 17:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_disconnect [2021-12-14 17:41:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_disconnect [2021-12-14 17:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure ttusb_dec_handle_irq [2021-12-14 17:41:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ttusb_dec_handle_irq [2021-12-14 17:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-12-14 17:41:31,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-12-14 17:41:31,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:41:31,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:41:31,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:41:31,821 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:41:31,826 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:41:32,093 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-14 17:41:36,705 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-12-14 17:41:36,976 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:41:37,001 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:41:37,001 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 17:41:37,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:41:37 BoogieIcfgContainer [2021-12-14 17:41:37,006 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:41:37,008 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:41:37,008 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:41:37,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:41:37,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:41:28" (1/3) ... [2021-12-14 17:41:37,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d2054f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:41:37, skipping insertion in model container [2021-12-14 17:41:37,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:41:30" (2/3) ... [2021-12-14 17:41:37,013 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9d2054f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:41:37, skipping insertion in model container [2021-12-14 17:41:37,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:41:37" (3/3) ... [2021-12-14 17:41:37,015 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--media--usb--ttusb-dec--ttusb_dec.ko-entry_point.cil.out.i [2021-12-14 17:41:37,020 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:41:37,020 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:41:37,073 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:41:37,080 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 [2021-12-14 17:41:37,080 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:41:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 1061 states, 762 states have (on average 1.3267716535433072) internal successors, (1011), 789 states have internal predecessors, (1011), 231 states have call successors, (231), 68 states have call predecessors, (231), 66 states have return successors, (225), 217 states have call predecessors, (225), 225 states have call successors, (225) [2021-12-14 17:41:37,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-14 17:41:37,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:41:37,132 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-14 17:41:37,133 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:41:37,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:41:37,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2031375709, now seen corresponding path program 1 times [2021-12-14 17:41:37,146 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:41:37,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352409245] [2021-12-14 17:41:37,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:41:37,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:41:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:37,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:41:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:37,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:41:37,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:37,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:41:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:37,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:41:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:37,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:41:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:37,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:41:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-14 17:41:37,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:41:37,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352409245] [2021-12-14 17:41:37,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352409245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:41:37,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:41:37,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:41:37,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834976766] [2021-12-14 17:41:37,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:41:37,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:41:37,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:41:37,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:41:37,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:41:37,933 INFO L87 Difference]: Start difference. First operand has 1061 states, 762 states have (on average 1.3267716535433072) internal successors, (1011), 789 states have internal predecessors, (1011), 231 states have call successors, (231), 68 states have call predecessors, (231), 66 states have return successors, (225), 217 states have call predecessors, (225), 225 states have call successors, (225) Second operand has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-14 17:41:41,545 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 [] [2021-12-14 17:41:46,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:41:46,774 INFO L93 Difference]: Finished difference Result 3527 states and 5164 transitions. [2021-12-14 17:41:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:41:46,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 52 [2021-12-14 17:41:46,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:41:46,818 INFO L225 Difference]: With dead ends: 3527 [2021-12-14 17:41:46,822 INFO L226 Difference]: Without dead ends: 2445 [2021-12-14 17:41:46,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:41:46,838 INFO L933 BasicCegarLoop]: 1607 mSDtfsCounter, 2963 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 1425 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3126 SdHoareTripleChecker+Valid, 4056 SdHoareTripleChecker+Invalid, 3185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1425 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:41:46,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3126 Valid, 4056 Invalid, 3185 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1425 Valid, 1759 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2021-12-14 17:41:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2445 states. [2021-12-14 17:41:47,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2445 to 2014. [2021-12-14 17:41:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2014 states, 1460 states have (on average 1.3171232876712329) internal successors, (1923), 1494 states have internal predecessors, (1923), 424 states have call successors, (424), 130 states have call predecessors, (424), 129 states have return successors, (419), 403 states have call predecessors, (419), 419 states have call successors, (419) [2021-12-14 17:41:47,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2014 states to 2014 states and 2766 transitions. [2021-12-14 17:41:47,074 INFO L78 Accepts]: Start accepts. Automaton has 2014 states and 2766 transitions. Word has length 52 [2021-12-14 17:41:47,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:41:47,076 INFO L470 AbstractCegarLoop]: Abstraction has 2014 states and 2766 transitions. [2021-12-14 17:41:47,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-14 17:41:47,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2014 states and 2766 transitions. [2021-12-14 17:41:47,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-14 17:41:47,086 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:41:47,087 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:41:47,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:41:47,087 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:41:47,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:41:47,088 INFO L85 PathProgramCache]: Analyzing trace with hash 2069612780, now seen corresponding path program 1 times [2021-12-14 17:41:47,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:41:47,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529456054] [2021-12-14 17:41:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:41:47,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:41:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:47,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:41:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:47,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:41:47,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:47,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:41:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:47,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:41:47,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:47,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:41:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:47,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:41:47,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:47,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:41:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-14 17:41:47,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:41:47,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529456054] [2021-12-14 17:41:47,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529456054] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:41:47,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:41:47,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:41:47,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699149300] [2021-12-14 17:41:47,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:41:47,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:41:47,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:41:47,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:41:47,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:41:47,442 INFO L87 Difference]: Start difference. First operand 2014 states and 2766 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:41:50,275 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 [] [2021-12-14 17:41:55,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:41:55,992 INFO L93 Difference]: Finished difference Result 6819 states and 9996 transitions. [2021-12-14 17:41:55,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:41:55,993 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 62 [2021-12-14 17:41:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:41:56,069 INFO L225 Difference]: With dead ends: 6819 [2021-12-14 17:41:56,070 INFO L226 Difference]: Without dead ends: 4827 [2021-12-14 17:41:56,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:41:56,084 INFO L933 BasicCegarLoop]: 1642 mSDtfsCounter, 2998 mSDsluCounter, 2557 mSDsCounter, 0 mSdLazyCounter, 1791 mSolverCounterSat, 1383 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3138 SdHoareTripleChecker+Valid, 4199 SdHoareTripleChecker+Invalid, 3175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1383 IncrementalHoareTripleChecker+Valid, 1791 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:41:56,084 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3138 Valid, 4199 Invalid, 3175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1383 Valid, 1791 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-12-14 17:41:56,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4827 states. [2021-12-14 17:41:56,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4827 to 4244. [2021-12-14 17:41:56,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4244 states, 3066 states have (on average 1.3065883887801697) internal successors, (4006), 3148 states have internal predecessors, (4006), 856 states have call successors, (856), 257 states have call predecessors, (856), 321 states have return successors, (1129), 862 states have call predecessors, (1129), 851 states have call successors, (1129) [2021-12-14 17:41:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4244 states to 4244 states and 5991 transitions. [2021-12-14 17:41:56,296 INFO L78 Accepts]: Start accepts. Automaton has 4244 states and 5991 transitions. Word has length 62 [2021-12-14 17:41:56,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:41:56,297 INFO L470 AbstractCegarLoop]: Abstraction has 4244 states and 5991 transitions. [2021-12-14 17:41:56,298 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:41:56,298 INFO L276 IsEmpty]: Start isEmpty. Operand 4244 states and 5991 transitions. [2021-12-14 17:41:56,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-14 17:41:56,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:41:56,301 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:41:56,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:41:56,301 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:41:56,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:41:56,302 INFO L85 PathProgramCache]: Analyzing trace with hash -266995818, now seen corresponding path program 1 times [2021-12-14 17:41:56,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:41:56,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879861774] [2021-12-14 17:41:56,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:41:56,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:41:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:56,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:41:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:56,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:41:56,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:56,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:41:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:56,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:41:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:56,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:41:56,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:56,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:41:56,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:56,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:41:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:41:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-14 17:41:56,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:41:56,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879861774] [2021-12-14 17:41:56,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879861774] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:41:56,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:41:56,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:41:56,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087423344] [2021-12-14 17:41:56,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:41:56,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:41:56,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:41:56,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:41:56,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:41:56,668 INFO L87 Difference]: Start difference. First operand 4244 states and 5991 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:41:59,465 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 [] [2021-12-14 17:42:05,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:42:05,148 INFO L93 Difference]: Finished difference Result 7096 states and 10382 transitions. [2021-12-14 17:42:05,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:42:05,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 63 [2021-12-14 17:42:05,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:42:05,195 INFO L225 Difference]: With dead ends: 7096 [2021-12-14 17:42:05,196 INFO L226 Difference]: Without dead ends: 7093 [2021-12-14 17:42:05,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:42:05,202 INFO L933 BasicCegarLoop]: 1500 mSDtfsCounter, 2970 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 1407 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3135 SdHoareTripleChecker+Valid, 3730 SdHoareTripleChecker+Invalid, 3077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1407 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2021-12-14 17:42:05,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3135 Valid, 3730 Invalid, 3077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1407 Valid, 1669 Invalid, 1 Unknown, 0 Unchecked, 8.1s Time] [2021-12-14 17:42:05,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7093 states. [2021-12-14 17:42:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7093 to 6240. [2021-12-14 17:42:05,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6240 states, 4498 states have (on average 1.3041351711871942) internal successors, (5866), 4618 states have internal predecessors, (5866), 1262 states have call successors, (1262), 383 states have call predecessors, (1262), 479 states have return successors, (1666), 1274 states have call predecessors, (1666), 1258 states have call successors, (1666) [2021-12-14 17:42:05,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 8794 transitions. [2021-12-14 17:42:05,502 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 8794 transitions. Word has length 63 [2021-12-14 17:42:05,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:42:05,503 INFO L470 AbstractCegarLoop]: Abstraction has 6240 states and 8794 transitions. [2021-12-14 17:42:05,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:42:05,503 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 8794 transitions. [2021-12-14 17:42:05,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-14 17:42:05,505 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:42:05,505 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:42:05,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:42:05,506 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:42:05,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:42:05,506 INFO L85 PathProgramCache]: Analyzing trace with hash 312586543, now seen corresponding path program 1 times [2021-12-14 17:42:05,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:42:05,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178920008] [2021-12-14 17:42:05,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:42:05,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:42:05,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:05,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:42:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:05,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:42:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:05,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:42:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:05,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:42:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:05,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:42:05,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:05,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:42:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:05,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:42:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:05,833 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-14 17:42:05,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:42:05,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178920008] [2021-12-14 17:42:05,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178920008] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:42:05,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:42:05,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:42:05,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607401529] [2021-12-14 17:42:05,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:42:05,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:42:05,838 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:42:05,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:42:05,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:42:05,839 INFO L87 Difference]: Start difference. First operand 6240 states and 8794 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:42:08,520 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 [] [2021-12-14 17:42:13,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:42:13,417 INFO L93 Difference]: Finished difference Result 7095 states and 10380 transitions. [2021-12-14 17:42:13,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:42:13,418 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 64 [2021-12-14 17:42:13,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:42:13,459 INFO L225 Difference]: With dead ends: 7095 [2021-12-14 17:42:13,459 INFO L226 Difference]: Without dead ends: 7092 [2021-12-14 17:42:13,465 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:42:13,465 INFO L933 BasicCegarLoop]: 1507 mSDtfsCounter, 2952 mSDsluCounter, 2247 mSDsCounter, 0 mSdLazyCounter, 1675 mSolverCounterSat, 1394 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3115 SdHoareTripleChecker+Valid, 3754 SdHoareTripleChecker+Invalid, 3070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1394 IncrementalHoareTripleChecker+Valid, 1675 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-12-14 17:42:13,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3115 Valid, 3754 Invalid, 3070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1394 Valid, 1675 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time] [2021-12-14 17:42:13,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7092 states. [2021-12-14 17:42:13,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7092 to 6239. [2021-12-14 17:42:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6239 states, 4498 states have (on average 1.3039128501556247) internal successors, (5865), 4617 states have internal predecessors, (5865), 1261 states have call successors, (1261), 383 states have call predecessors, (1261), 479 states have return successors, (1666), 1274 states have call predecessors, (1666), 1258 states have call successors, (1666) [2021-12-14 17:42:13,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6239 states to 6239 states and 8792 transitions. [2021-12-14 17:42:13,797 INFO L78 Accepts]: Start accepts. Automaton has 6239 states and 8792 transitions. Word has length 64 [2021-12-14 17:42:13,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:42:13,799 INFO L470 AbstractCegarLoop]: Abstraction has 6239 states and 8792 transitions. [2021-12-14 17:42:13,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:42:13,800 INFO L276 IsEmpty]: Start isEmpty. Operand 6239 states and 8792 transitions. [2021-12-14 17:42:13,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-14 17:42:13,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:42:13,802 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:42:13,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:42:13,802 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:42:13,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:42:13,803 INFO L85 PathProgramCache]: Analyzing trace with hash 1099775417, now seen corresponding path program 1 times [2021-12-14 17:42:13,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:42:13,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56776324] [2021-12-14 17:42:13,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:42:13,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:42:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:13,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:42:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:13,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:42:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:13,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:42:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:42:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:13,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:42:13,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:14,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:42:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:14,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:42:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:14,045 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-14 17:42:14,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:42:14,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56776324] [2021-12-14 17:42:14,045 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56776324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:42:14,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:42:14,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:42:14,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179828331] [2021-12-14 17:42:14,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:42:14,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:42:14,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:42:14,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:42:14,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:42:14,049 INFO L87 Difference]: Start difference. First operand 6239 states and 8792 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:42:16,648 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 [] [2021-12-14 17:42:20,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:42:20,779 INFO L93 Difference]: Finished difference Result 7094 states and 10378 transitions. [2021-12-14 17:42:20,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:42:20,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 65 [2021-12-14 17:42:20,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:42:20,822 INFO L225 Difference]: With dead ends: 7094 [2021-12-14 17:42:20,823 INFO L226 Difference]: Without dead ends: 7091 [2021-12-14 17:42:20,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:42:20,830 INFO L933 BasicCegarLoop]: 1504 mSDtfsCounter, 2948 mSDsluCounter, 2254 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 1390 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3110 SdHoareTripleChecker+Valid, 3758 SdHoareTripleChecker+Invalid, 3088 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1390 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:42:20,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3110 Valid, 3758 Invalid, 3088 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1390 Valid, 1697 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2021-12-14 17:42:20,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7091 states. [2021-12-14 17:42:21,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7091 to 6238. [2021-12-14 17:42:21,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6238 states, 4498 states have (on average 1.303690529124055) internal successors, (5864), 4616 states have internal predecessors, (5864), 1260 states have call successors, (1260), 383 states have call predecessors, (1260), 479 states have return successors, (1666), 1274 states have call predecessors, (1666), 1258 states have call successors, (1666) [2021-12-14 17:42:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6238 states to 6238 states and 8790 transitions. [2021-12-14 17:42:21,124 INFO L78 Accepts]: Start accepts. Automaton has 6238 states and 8790 transitions. Word has length 65 [2021-12-14 17:42:21,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:42:21,124 INFO L470 AbstractCegarLoop]: Abstraction has 6238 states and 8790 transitions. [2021-12-14 17:42:21,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-14 17:42:21,125 INFO L276 IsEmpty]: Start isEmpty. Operand 6238 states and 8790 transitions. [2021-12-14 17:42:21,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-14 17:42:21,126 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:42:21,126 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:42:21,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:42:21,126 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:42:21,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:42:21,127 INFO L85 PathProgramCache]: Analyzing trace with hash -267168398, now seen corresponding path program 1 times [2021-12-14 17:42:21,127 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:42:21,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365009171] [2021-12-14 17:42:21,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:42:21,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:42:21,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:21,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:42:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:21,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-14 17:42:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:21,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-14 17:42:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:21,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-14 17:42:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:21,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-14 17:42:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:21,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-14 17:42:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:21,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:42:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:42:21,354 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-14 17:42:21,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:42:21,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365009171] [2021-12-14 17:42:21,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365009171] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:42:21,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:42:21,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:42:21,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472510715] [2021-12-14 17:42:21,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:42:21,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 17:42:21,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:42:21,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 17:42:21,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 17:42:21,357 INFO L87 Difference]: Start difference. First operand 6238 states and 8790 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7)