./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.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 4e983f35cff7a0c67962e23f6c3d66292f25c728e4d1df204c975f306d1512a3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 12:36:16,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:36:16,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:36:16,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:36:16,317 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:36:16,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:36:16,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:36:16,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:36:16,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:36:16,323 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:36:16,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:36:16,324 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:36:16,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:36:16,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:36:16,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:36:16,327 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:36:16,328 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:36:16,329 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:36:16,330 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:36:16,332 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:36:16,333 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:36:16,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:36:16,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:36:16,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:36:16,336 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:36:16,339 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:36:16,339 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:36:16,340 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:36:16,340 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:36:16,341 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:36:16,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:36:16,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:36:16,342 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:36:16,343 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:36:16,344 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:36:16,345 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:36:16,345 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:36:16,345 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:36:16,346 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:36:16,346 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:36:16,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:36:16,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:36:16,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:36:16,366 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:36:16,366 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:36:16,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:36:16,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:36:16,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:36:16,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:36:16,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:36:16,368 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:36:16,368 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:36:16,368 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:36:16,369 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:36:16,369 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:36:16,369 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:36:16,369 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:36:16,369 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:36:16,370 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:36:16,370 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:36:16,370 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:36:16,370 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:36:16,370 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:36:16,371 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:36:16,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:36:16,371 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:36:16,371 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:36:16,371 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:36:16,372 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:36:16,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:36:16,372 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:36:16,372 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:36:16,372 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:36:16,373 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e983f35cff7a0c67962e23f6c3d66292f25c728e4d1df204c975f306d1512a3 [2022-07-12 12:36:16,576 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:36:16,593 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:36:16,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:36:16,596 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:36:16,597 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:36:16,598 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2022-07-12 12:36:16,657 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4c6cdff/6703cc3a4e5d463ca6e0b45ffa187130/FLAGdb39b808d [2022-07-12 12:36:17,245 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:36:17,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2022-07-12 12:36:17,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4c6cdff/6703cc3a4e5d463ca6e0b45ffa187130/FLAGdb39b808d [2022-07-12 12:36:17,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d4c6cdff/6703cc3a4e5d463ca6e0b45ffa187130 [2022-07-12 12:36:17,422 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:36:17,423 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:36:17,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:36:17,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:36:17,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:36:17,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:36:17" (1/1) ... [2022-07-12 12:36:17,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5150c581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:36:17, skipping insertion in model container [2022-07-12 12:36:17,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:36:17" (1/1) ... [2022-07-12 12:36:17,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:36:17,518 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:36:18,043 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i[159401,159414] [2022-07-12 12:36:18,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:36:18,295 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:36:18,393 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-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i[159401,159414] [2022-07-12 12:36:18,445 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:36:18,472 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:36:18,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:36:18 WrapperNode [2022-07-12 12:36:18,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:36:18,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:36:18,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:36:18,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:36:18,501 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:36:18" (1/1) ... [2022-07-12 12:36:18,538 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:36:18" (1/1) ... [2022-07-12 12:36:18,602 INFO L137 Inliner]: procedures = 102, calls = 315, calls flagged for inlining = 35, calls inlined = 32, statements flattened = 987 [2022-07-12 12:36:18,607 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:36:18,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:36:18,608 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:36:18,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:36:18,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:36:18" (1/1) ... [2022-07-12 12:36:18,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:36:18" (1/1) ... [2022-07-12 12:36:18,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:36:18" (1/1) ... [2022-07-12 12:36:18,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:36:18" (1/1) ... [2022-07-12 12:36:18,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:36:18" (1/1) ... [2022-07-12 12:36:18,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:36:18" (1/1) ... [2022-07-12 12:36:18,700 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:36:18" (1/1) ... [2022-07-12 12:36:18,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:36:18,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:36:18,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:36:18,710 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:36:18,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:36:18" (1/1) ... [2022-07-12 12:36:18,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:36:18,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:36:18,757 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) [2022-07-12 12:36:18,782 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 [2022-07-12 12:36:18,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 12:36:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 12:36:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 12:36:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-12 12:36:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-12 12:36:18,799 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-12 12:36:18,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-12 12:36:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:36:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_tx_fixup [2022-07-12 12:36:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_tx_fixup [2022-07-12 12:36:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_disconnect [2022-07-12 12:36:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_disconnect [2022-07-12 12:36:18,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 12:36:18,800 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 12:36:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-12 12:36:18,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-12 12:36:18,801 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:36:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:36:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_rx_fixup [2022-07-12 12:36:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_rx_fixup [2022-07-12 12:36:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2022-07-12 12:36:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2022-07-12 12:36:18,802 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-12 12:36:18,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-12 12:36:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 12:36:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 12:36:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:36:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:36:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:36:18,803 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-07-12 12:36:18,803 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-07-12 12:36:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 12:36:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 12:36:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure usbnet_skb_return [2022-07-12 12:36:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure usbnet_skb_return [2022-07-12 12:36:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 12:36:18,804 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 12:36:18,804 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:36:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:36:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:36:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:36:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:36:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:36:18,805 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:36:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-12 12:36:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-12 12:36:18,806 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-12 12:36:18,806 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-12 12:36:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure cx82310_cmd [2022-07-12 12:36:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure cx82310_cmd [2022-07-12 12:36:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:36:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 12:36:18,807 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-12 12:36:18,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-12 12:36:18,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:36:18,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:36:19,147 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:36:19,150 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:36:19,256 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-12 12:36:20,433 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:36:20,447 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:36:20,447 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 12:36:20,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:36:20 BoogieIcfgContainer [2022-07-12 12:36:20,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:36:20,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:36:20,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:36:20,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:36:20,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:36:17" (1/3) ... [2022-07-12 12:36:20,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24709e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:36:20, skipping insertion in model container [2022-07-12 12:36:20,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:36:18" (2/3) ... [2022-07-12 12:36:20,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24709e95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:36:20, skipping insertion in model container [2022-07-12 12:36:20,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:36:20" (3/3) ... [2022-07-12 12:36:20,459 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--usb--cx82310_eth.ko-entry_point.cil.out.i [2022-07-12 12:36:20,472 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:36:20,472 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:36:20,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:36:20,534 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a1fe53a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5baee386 [2022-07-12 12:36:20,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:36:20,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 306 states, 230 states have (on average 1.4) internal successors, (322), 236 states have internal predecessors, (322), 55 states have call successors, (55), 20 states have call predecessors, (55), 19 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-07-12 12:36:20,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-07-12 12:36:20,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:20,556 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:20,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:20,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:20,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1372626135, now seen corresponding path program 1 times [2022-07-12 12:36:20,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:20,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846854100] [2022-07-12 12:36:20,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:20,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:20,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:20,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:20,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:21,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:36:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:21,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 12:36:21,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:21,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 12:36:21,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:21,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846854100] [2022-07-12 12:36:21,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846854100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:21,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:36:21,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:36:21,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954945408] [2022-07-12 12:36:21,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:21,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:36:21,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:21,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:36:21,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:36:21,067 INFO L87 Difference]: Start difference. First operand has 306 states, 230 states have (on average 1.4) internal successors, (322), 236 states have internal predecessors, (322), 55 states have call successors, (55), 20 states have call predecessors, (55), 19 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:36:23,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:23,859 INFO L93 Difference]: Finished difference Result 1045 states and 1591 transitions. [2022-07-12 12:36:23,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:36:23,863 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2022-07-12 12:36:23,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:23,892 INFO L225 Difference]: With dead ends: 1045 [2022-07-12 12:36:23,892 INFO L226 Difference]: Without dead ends: 728 [2022-07-12 12:36:23,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:36:23,902 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 843 mSDsluCounter, 789 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:23,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1238 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 12:36:23,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-07-12 12:36:23,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 553. [2022-07-12 12:36:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 423 states have (on average 1.375886524822695) internal successors, (582), 423 states have internal predecessors, (582), 94 states have call successors, (94), 36 states have call predecessors, (94), 35 states have return successors, (93), 93 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-12 12:36:24,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 769 transitions. [2022-07-12 12:36:24,007 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 769 transitions. Word has length 36 [2022-07-12 12:36:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:24,008 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 769 transitions. [2022-07-12 12:36:24,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:36:24,009 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 769 transitions. [2022-07-12 12:36:24,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-07-12 12:36:24,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:24,012 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:24,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:36:24,013 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:24,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:24,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2092020101, now seen corresponding path program 1 times [2022-07-12 12:36:24,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:24,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788624829] [2022-07-12 12:36:24,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:24,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:36:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 12:36:24,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:24,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:36:24,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:24,193 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-12 12:36:24,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:24,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788624829] [2022-07-12 12:36:24,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788624829] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:24,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:36:24,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:36:24,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634489025] [2022-07-12 12:36:24,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:24,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:36:24,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:24,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:36:24,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:36:24,197 INFO L87 Difference]: Start difference. First operand 553 states and 769 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 12:36:26,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:26,072 INFO L93 Difference]: Finished difference Result 1975 states and 2881 transitions. [2022-07-12 12:36:26,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:36:26,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 46 [2022-07-12 12:36:26,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:26,081 INFO L225 Difference]: With dead ends: 1975 [2022-07-12 12:36:26,081 INFO L226 Difference]: Without dead ends: 1430 [2022-07-12 12:36:26,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:36:26,085 INFO L413 NwaCegarLoop]: 510 mSDtfsCounter, 850 mSDsluCounter, 1747 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 301 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 1143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 301 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:26,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 2257 Invalid, 1143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [301 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-07-12 12:36:26,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2022-07-12 12:36:26,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1163. [2022-07-12 12:36:26,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 897 states have (on average 1.3812709030100334) internal successors, (1239), 899 states have internal predecessors, (1239), 188 states have call successors, (188), 70 states have call predecessors, (188), 77 states have return successors, (215), 193 states have call predecessors, (215), 187 states have call successors, (215) [2022-07-12 12:36:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1642 transitions. [2022-07-12 12:36:26,169 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1642 transitions. Word has length 46 [2022-07-12 12:36:26,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:26,170 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1642 transitions. [2022-07-12 12:36:26,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 5 states have internal predecessors, (31), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-07-12 12:36:26,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1642 transitions. [2022-07-12 12:36:26,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 12:36:26,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:26,178 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:26,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:36:26,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:26,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:26,179 INFO L85 PathProgramCache]: Analyzing trace with hash -2091695119, now seen corresponding path program 1 times [2022-07-12 12:36:26,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:26,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901711120] [2022-07-12 12:36:26,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:26,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:26,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:26,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:36:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:26,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 12:36:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:26,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:36:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:26,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:26,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:26,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:26,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:26,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 12:36:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:26,354 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 12:36:26,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:26,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901711120] [2022-07-12 12:36:26,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901711120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:26,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:36:26,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:36:26,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403655078] [2022-07-12 12:36:26,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:26,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:36:26,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:26,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:36:26,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:36:26,386 INFO L87 Difference]: Start difference. First operand 1163 states and 1642 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 12:36:27,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:27,685 INFO L93 Difference]: Finished difference Result 2875 states and 4169 transitions. [2022-07-12 12:36:27,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:36:27,685 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2022-07-12 12:36:27,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:27,695 INFO L225 Difference]: With dead ends: 2875 [2022-07-12 12:36:27,696 INFO L226 Difference]: Without dead ends: 1726 [2022-07-12 12:36:27,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:36:27,702 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 477 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1153 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:27,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 1153 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-12 12:36:27,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2022-07-12 12:36:27,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1384. [2022-07-12 12:36:27,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1095 states have (on average 1.3990867579908677) internal successors, (1532), 1097 states have internal predecessors, (1532), 201 states have call successors, (201), 80 states have call predecessors, (201), 87 states have return successors, (228), 206 states have call predecessors, (228), 200 states have call successors, (228) [2022-07-12 12:36:27,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1961 transitions. [2022-07-12 12:36:27,769 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1961 transitions. Word has length 84 [2022-07-12 12:36:27,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:27,770 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 1961 transitions. [2022-07-12 12:36:27,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 12:36:27,770 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1961 transitions. [2022-07-12 12:36:27,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 12:36:27,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:27,774 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:27,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:36:27,775 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:27,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:27,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1899779352, now seen corresponding path program 1 times [2022-07-12 12:36:27,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:27,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722385775] [2022-07-12 12:36:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:27,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:27,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:27,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:36:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:27,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 12:36:27,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:27,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:36:27,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:36:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:27,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:36:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:28,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 12:36:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:28,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 12:36:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:28,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:28,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:28,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:28,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 12:36:28,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:28,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722385775] [2022-07-12 12:36:28,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722385775] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:28,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:36:28,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:36:28,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469094861] [2022-07-12 12:36:28,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:28,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:36:28,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:28,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:36:28,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:36:28,089 INFO L87 Difference]: Start difference. First operand 1384 states and 1961 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 12:36:31,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:31,399 INFO L93 Difference]: Finished difference Result 4181 states and 6057 transitions. [2022-07-12 12:36:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:36:31,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 112 [2022-07-12 12:36:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:31,414 INFO L225 Difference]: With dead ends: 4181 [2022-07-12 12:36:31,415 INFO L226 Difference]: Without dead ends: 2822 [2022-07-12 12:36:31,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:36:31,421 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 767 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 814 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1692 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 814 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:31,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 1692 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 814 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 12:36:31,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2022-07-12 12:36:31,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2180. [2022-07-12 12:36:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2180 states, 1729 states have (on average 1.3846153846153846) internal successors, (2394), 1733 states have internal predecessors, (2394), 303 states have call successors, (303), 132 states have call predecessors, (303), 147 states have return successors, (347), 314 states have call predecessors, (347), 302 states have call successors, (347) [2022-07-12 12:36:31,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2180 states to 2180 states and 3044 transitions. [2022-07-12 12:36:31,522 INFO L78 Accepts]: Start accepts. Automaton has 2180 states and 3044 transitions. Word has length 112 [2022-07-12 12:36:31,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:31,523 INFO L495 AbstractCegarLoop]: Abstraction has 2180 states and 3044 transitions. [2022-07-12 12:36:31,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-12 12:36:31,523 INFO L276 IsEmpty]: Start isEmpty. Operand 2180 states and 3044 transitions. [2022-07-12 12:36:31,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 12:36:31,527 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:31,527 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:31,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:36:31,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:31,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:31,528 INFO L85 PathProgramCache]: Analyzing trace with hash -80175978, now seen corresponding path program 1 times [2022-07-12 12:36:31,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:31,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495110655] [2022-07-12 12:36:31,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:31,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:31,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:31,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:31,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:31,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:36:31,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:31,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 12:36:31,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:31,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:36:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:31,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:36:31,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:31,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:36:31,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:31,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 12:36:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:31,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 12:36:31,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:31,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:31,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:31,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:31,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:31,874 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-12 12:36:31,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:31,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495110655] [2022-07-12 12:36:31,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495110655] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:31,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:36:31,875 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 12:36:31,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628319391] [2022-07-12 12:36:31,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:31,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 12:36:31,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:31,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 12:36:31,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:36:31,877 INFO L87 Difference]: Start difference. First operand 2180 states and 3044 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-12 12:36:33,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:33,555 INFO L93 Difference]: Finished difference Result 5056 states and 7336 transitions. [2022-07-12 12:36:33,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 12:36:33,556 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) Word has length 112 [2022-07-12 12:36:33,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:33,572 INFO L225 Difference]: With dead ends: 5056 [2022-07-12 12:36:33,572 INFO L226 Difference]: Without dead ends: 2901 [2022-07-12 12:36:33,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-07-12 12:36:33,581 INFO L413 NwaCegarLoop]: 403 mSDtfsCounter, 286 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:33,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 2050 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-12 12:36:33,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2022-07-12 12:36:33,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 2232. [2022-07-12 12:36:33,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2232 states, 1765 states have (on average 1.3767705382436262) internal successors, (2430), 1777 states have internal predecessors, (2430), 303 states have call successors, (303), 132 states have call predecessors, (303), 163 states have return successors, (371), 322 states have call predecessors, (371), 302 states have call successors, (371) [2022-07-12 12:36:33,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2232 states to 2232 states and 3104 transitions. [2022-07-12 12:36:33,715 INFO L78 Accepts]: Start accepts. Automaton has 2232 states and 3104 transitions. Word has length 112 [2022-07-12 12:36:33,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:33,716 INFO L495 AbstractCegarLoop]: Abstraction has 2232 states and 3104 transitions. [2022-07-12 12:36:33,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 3 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-12 12:36:33,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2232 states and 3104 transitions. [2022-07-12 12:36:33,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 12:36:33,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:33,720 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:33,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 12:36:33,722 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:33,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:33,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1707497592, now seen corresponding path program 1 times [2022-07-12 12:36:33,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:33,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129928271] [2022-07-12 12:36:33,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:33,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:33,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:36:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 12:36:33,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:36:33,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:36:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:36:33,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 12:36:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 12:36:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:33,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:33,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:34,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:34,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 12:36:34,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 12:36:34,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:34,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129928271] [2022-07-12 12:36:34,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129928271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:34,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:36:34,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 12:36:34,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518656243] [2022-07-12 12:36:34,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:34,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 12:36:34,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:34,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 12:36:34,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:36:34,109 INFO L87 Difference]: Start difference. First operand 2232 states and 3104 transitions. Second operand has 10 states, 10 states have (on average 7.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:36:37,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:37,696 INFO L93 Difference]: Finished difference Result 5416 states and 7968 transitions. [2022-07-12 12:36:37,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 12:36:37,696 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2022-07-12 12:36:37,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:37,712 INFO L225 Difference]: With dead ends: 5416 [2022-07-12 12:36:37,713 INFO L226 Difference]: Without dead ends: 3209 [2022-07-12 12:36:37,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:36:37,721 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 275 mSDsluCounter, 1880 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:37,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 2289 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-12 12:36:37,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3209 states. [2022-07-12 12:36:37,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3209 to 2412. [2022-07-12 12:36:37,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2412 states, 1877 states have (on average 1.3670751198721365) internal successors, (2566), 1893 states have internal predecessors, (2566), 359 states have call successors, (359), 132 states have call predecessors, (359), 175 states have return successors, (514), 386 states have call predecessors, (514), 358 states have call successors, (514) [2022-07-12 12:36:37,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3439 transitions. [2022-07-12 12:36:37,846 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3439 transitions. Word has length 118 [2022-07-12 12:36:37,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:37,847 INFO L495 AbstractCegarLoop]: Abstraction has 2412 states and 3439 transitions. [2022-07-12 12:36:37,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.5) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-12 12:36:37,847 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3439 transitions. [2022-07-12 12:36:37,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 12:36:37,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:37,874 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:37,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 12:36:37,875 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:37,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:37,875 INFO L85 PathProgramCache]: Analyzing trace with hash -916115273, now seen corresponding path program 1 times [2022-07-12 12:36:37,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:37,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239386835] [2022-07-12 12:36:37,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:37,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:37,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:37,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:36:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:37,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 12:36:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:38,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:36:38,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:38,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:36:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:38,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:36:38,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:38,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 12:36:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:38,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 12:36:38,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:38,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:36:38,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:38,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:38,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:36:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:38,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:38,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:38,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:38,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:36:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:38,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:36:38,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:38,140 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-07-12 12:36:38,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:38,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239386835] [2022-07-12 12:36:38,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239386835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:38,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:36:38,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 12:36:38,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481967094] [2022-07-12 12:36:38,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:38,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:36:38,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:38,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:36:38,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:36:38,143 INFO L87 Difference]: Start difference. First operand 2412 states and 3439 transitions. Second operand has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:36:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:39,776 INFO L93 Difference]: Finished difference Result 5636 states and 8291 transitions. [2022-07-12 12:36:39,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 12:36:39,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 7 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 145 [2022-07-12 12:36:39,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:39,794 INFO L225 Difference]: With dead ends: 5636 [2022-07-12 12:36:39,795 INFO L226 Difference]: Without dead ends: 3249 [2022-07-12 12:36:39,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:36:39,807 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 373 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1254 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:39,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1254 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 12:36:39,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3249 states. [2022-07-12 12:36:39,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3249 to 2424. [2022-07-12 12:36:39,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2424 states, 1889 states have (on average 1.3647432503970354) internal successors, (2578), 1905 states have internal predecessors, (2578), 359 states have call successors, (359), 132 states have call predecessors, (359), 175 states have return successors, (514), 386 states have call predecessors, (514), 358 states have call successors, (514) [2022-07-12 12:36:39,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2424 states to 2424 states and 3451 transitions. [2022-07-12 12:36:39,932 INFO L78 Accepts]: Start accepts. Automaton has 2424 states and 3451 transitions. Word has length 145 [2022-07-12 12:36:39,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:39,932 INFO L495 AbstractCegarLoop]: Abstraction has 2424 states and 3451 transitions. [2022-07-12 12:36:39,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.5) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (16), 7 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:36:39,933 INFO L276 IsEmpty]: Start isEmpty. Operand 2424 states and 3451 transitions. [2022-07-12 12:36:39,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-12 12:36:39,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:39,937 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:39,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 12:36:39,938 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:39,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:39,938 INFO L85 PathProgramCache]: Analyzing trace with hash -355415495, now seen corresponding path program 1 times [2022-07-12 12:36:39,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:39,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253817737] [2022-07-12 12:36:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:39,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:36:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 12:36:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 12:36:40,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:36:40,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:36:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 12:36:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 12:36:40,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:36:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:36:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:40,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:36:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:36:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,325 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 12:36:40,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:40,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253817737] [2022-07-12 12:36:40,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1253817737] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:36:40,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376361424] [2022-07-12 12:36:40,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:40,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:36:40,326 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:36:40,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:36:40,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 12:36:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:40,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 1312 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-12 12:36:40,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:36:40,919 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-07-12 12:36:40,924 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 12:36:40,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376361424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:40,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 12:36:40,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 10 [2022-07-12 12:36:40,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348020388] [2022-07-12 12:36:40,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:40,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:36:40,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:40,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:36:40,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:36:40,926 INFO L87 Difference]: Start difference. First operand 2424 states and 3451 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:36:41,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:41,018 INFO L93 Difference]: Finished difference Result 4833 states and 6887 transitions. [2022-07-12 12:36:41,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:36:41,019 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 145 [2022-07-12 12:36:41,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:41,033 INFO L225 Difference]: With dead ends: 4833 [2022-07-12 12:36:41,034 INFO L226 Difference]: Without dead ends: 2425 [2022-07-12 12:36:41,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 168 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:36:41,042 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 2 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1215 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:41,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1215 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 12:36:41,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2022-07-12 12:36:41,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2425. [2022-07-12 12:36:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2425 states, 1890 states have (on average 1.3645502645502645) internal successors, (2579), 1906 states have internal predecessors, (2579), 359 states have call successors, (359), 132 states have call predecessors, (359), 175 states have return successors, (514), 386 states have call predecessors, (514), 358 states have call successors, (514) [2022-07-12 12:36:41,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2425 states to 2425 states and 3452 transitions. [2022-07-12 12:36:41,159 INFO L78 Accepts]: Start accepts. Automaton has 2425 states and 3452 transitions. Word has length 145 [2022-07-12 12:36:41,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:41,160 INFO L495 AbstractCegarLoop]: Abstraction has 2425 states and 3452 transitions. [2022-07-12 12:36:41,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 12:36:41,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2425 states and 3452 transitions. [2022-07-12 12:36:41,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-12 12:36:41,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:41,165 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:41,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 12:36:41,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:36:41,381 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:41,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:41,382 INFO L85 PathProgramCache]: Analyzing trace with hash 783242525, now seen corresponding path program 1 times [2022-07-12 12:36:41,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:41,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704082938] [2022-07-12 12:36:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:41,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:36:41,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 12:36:41,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 12:36:41,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:36:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 12:36:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 12:36:41,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 12:36:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:36:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:36:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:41,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:36:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:36:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:41,754 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-12 12:36:41,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:41,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704082938] [2022-07-12 12:36:41,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704082938] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:36:41,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718115848] [2022-07-12 12:36:41,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:41,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:36:41,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:36:41,757 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:36:41,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 12:36:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:42,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 1342 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-12 12:36:42,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:36:42,359 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-12 12:36:42,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:36:42,619 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-12 12:36:42,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718115848] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 12:36:42,619 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 12:36:42,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5, 5] total 15 [2022-07-12 12:36:42,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858608652] [2022-07-12 12:36:42,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 12:36:42,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 12:36:42,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:42,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 12:36:42,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2022-07-12 12:36:42,621 INFO L87 Difference]: Start difference. First operand 2425 states and 3452 transitions. Second operand has 15 states, 15 states have (on average 10.266666666666667) internal successors, (154), 10 states have internal predecessors, (154), 2 states have call successors, (42), 7 states have call predecessors, (42), 5 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-12 12:36:45,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:45,478 INFO L93 Difference]: Finished difference Result 5661 states and 8264 transitions. [2022-07-12 12:36:45,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 12:36:45,479 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 10.266666666666667) internal successors, (154), 10 states have internal predecessors, (154), 2 states have call successors, (42), 7 states have call predecessors, (42), 5 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 147 [2022-07-12 12:36:45,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:45,496 INFO L225 Difference]: With dead ends: 5661 [2022-07-12 12:36:45,496 INFO L226 Difference]: Without dead ends: 3250 [2022-07-12 12:36:45,502 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 311 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2022-07-12 12:36:45,503 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 283 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 1497 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 2980 SdHoareTripleChecker+Invalid, 1689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:45,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 2980 Invalid, 1689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1497 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-12 12:36:45,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2022-07-12 12:36:45,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 2428. [2022-07-12 12:36:45,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2428 states, 1893 states have (on average 1.363972530375066) internal successors, (2582), 1909 states have internal predecessors, (2582), 359 states have call successors, (359), 132 states have call predecessors, (359), 175 states have return successors, (514), 386 states have call predecessors, (514), 358 states have call successors, (514) [2022-07-12 12:36:45,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3455 transitions. [2022-07-12 12:36:45,687 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3455 transitions. Word has length 147 [2022-07-12 12:36:45,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:45,687 INFO L495 AbstractCegarLoop]: Abstraction has 2428 states and 3455 transitions. [2022-07-12 12:36:45,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 10.266666666666667) internal successors, (154), 10 states have internal predecessors, (154), 2 states have call successors, (42), 7 states have call predecessors, (42), 5 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-12 12:36:45,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3455 transitions. [2022-07-12 12:36:45,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-12 12:36:45,692 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:45,692 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:45,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 12:36:45,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-07-12 12:36:45,919 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:45,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:45,920 INFO L85 PathProgramCache]: Analyzing trace with hash -672213703, now seen corresponding path program 2 times [2022-07-12 12:36:45,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:45,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997071702] [2022-07-12 12:36:45,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:45,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:46,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:36:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:36:46,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:36:46,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 12:36:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 12:36:46,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 12:36:46,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:36:46,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:36:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:36:46,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:36:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:36:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:46,994 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-12 12:36:46,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:46,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997071702] [2022-07-12 12:36:46,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997071702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:46,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:36:46,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-07-12 12:36:46,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915560350] [2022-07-12 12:36:46,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:46,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-12 12:36:46,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:46,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-12 12:36:46,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2022-07-12 12:36:46,996 INFO L87 Difference]: Start difference. First operand 2428 states and 3455 transitions. Second operand has 21 states, 20 states have (on average 4.7) internal successors, (94), 12 states have internal predecessors, (94), 4 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (15), 7 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-12 12:36:51,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:51,639 INFO L93 Difference]: Finished difference Result 5909 states and 8830 transitions. [2022-07-12 12:36:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 12:36:51,640 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 12 states have internal predecessors, (94), 4 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (15), 7 states have call predecessors, (15), 3 states have call successors, (15) Word has length 153 [2022-07-12 12:36:51,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:51,659 INFO L225 Difference]: With dead ends: 5909 [2022-07-12 12:36:51,660 INFO L226 Difference]: Without dead ends: 3510 [2022-07-12 12:36:51,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=716, Unknown=0, NotChecked=0, Total=812 [2022-07-12 12:36:51,669 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 321 mSDsluCounter, 5474 mSDsCounter, 0 mSdLazyCounter, 3277 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 5943 SdHoareTripleChecker+Invalid, 3457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 3277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:51,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 5943 Invalid, 3457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 3277 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-12 12:36:51,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3510 states. [2022-07-12 12:36:51,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3510 to 2452. [2022-07-12 12:36:51,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 1913 states have (on average 1.3538944066910612) internal successors, (2590), 1921 states have internal predecessors, (2590), 363 states have call successors, (363), 132 states have call predecessors, (363), 175 states have return successors, (522), 398 states have call predecessors, (522), 362 states have call successors, (522) [2022-07-12 12:36:51,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3475 transitions. [2022-07-12 12:36:51,822 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3475 transitions. Word has length 153 [2022-07-12 12:36:51,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:51,822 INFO L495 AbstractCegarLoop]: Abstraction has 2452 states and 3475 transitions. [2022-07-12 12:36:51,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.7) internal successors, (94), 12 states have internal predecessors, (94), 4 states have call successors, (16), 7 states have call predecessors, (16), 6 states have return successors, (15), 7 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-12 12:36:51,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3475 transitions. [2022-07-12 12:36:51,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 12:36:51,827 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:51,827 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:51,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 12:36:51,828 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:51,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:51,829 INFO L85 PathProgramCache]: Analyzing trace with hash 728737592, now seen corresponding path program 1 times [2022-07-12 12:36:51,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:51,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589591054] [2022-07-12 12:36:51,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:51,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:36:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:36:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:36:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 12:36:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 12:36:52,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 12:36:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:36:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:36:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:36:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:52,438 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-12 12:36:52,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:52,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589591054] [2022-07-12 12:36:52,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589591054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:52,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:36:52,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-12 12:36:52,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586712343] [2022-07-12 12:36:52,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:52,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-12 12:36:52,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:52,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-12 12:36:52,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-12 12:36:52,440 INFO L87 Difference]: Start difference. First operand 2452 states and 3475 transitions. Second operand has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 10 states have internal predecessors, (81), 3 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 7 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:36:56,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:36:56,675 INFO L93 Difference]: Finished difference Result 5821 states and 8506 transitions. [2022-07-12 12:36:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 12:36:56,680 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 10 states have internal predecessors, (81), 3 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 7 states have call predecessors, (13), 2 states have call successors, (13) Word has length 133 [2022-07-12 12:36:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:36:56,703 INFO L225 Difference]: With dead ends: 5821 [2022-07-12 12:36:56,704 INFO L226 Difference]: Without dead ends: 3398 [2022-07-12 12:36:56,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2022-07-12 12:36:56,712 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 244 mSDsluCounter, 5228 mSDsCounter, 0 mSdLazyCounter, 3023 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 5706 SdHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 3023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:36:56,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 5706 Invalid, 3174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 3023 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-12 12:36:56,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3398 states. [2022-07-12 12:36:56,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 2468. [2022-07-12 12:36:56,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 1929 states have (on average 1.3509590461378953) internal successors, (2606), 1929 states have internal predecessors, (2606), 363 states have call successors, (363), 132 states have call predecessors, (363), 175 states have return successors, (522), 406 states have call predecessors, (522), 362 states have call successors, (522) [2022-07-12 12:36:56,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3491 transitions. [2022-07-12 12:36:56,886 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3491 transitions. Word has length 133 [2022-07-12 12:36:56,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:36:56,887 INFO L495 AbstractCegarLoop]: Abstraction has 2468 states and 3491 transitions. [2022-07-12 12:36:56,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 10 states have internal predecessors, (81), 3 states have call successors, (14), 7 states have call predecessors, (14), 6 states have return successors, (13), 7 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:36:56,887 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3491 transitions. [2022-07-12 12:36:56,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-12 12:36:56,893 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:36:56,894 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:36:56,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 12:36:56,894 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:36:56,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:36:56,895 INFO L85 PathProgramCache]: Analyzing trace with hash -900196334, now seen corresponding path program 1 times [2022-07-12 12:36:56,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:36:56,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101629763] [2022-07-12 12:36:56,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:36:56,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:36:56,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:36:57,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:36:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:36:57,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:36:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 12:36:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 12:36:57,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 12:36:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:36:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:36:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:36:57,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:57,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:36:57,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:36:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 12:36:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 12:36:57,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 12:36:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:36:57,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:36:57,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:36:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-12 12:36:57,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:36:57,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101629763] [2022-07-12 12:36:57,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101629763] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:36:57,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:36:57,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 12:36:57,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635965448] [2022-07-12 12:36:57,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:36:57,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 12:36:57,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:36:57,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 12:36:57,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:36:57,272 INFO L87 Difference]: Start difference. First operand 2468 states and 3491 transitions. Second operand has 11 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 4 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-12 12:37:01,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:37:01,196 INFO L93 Difference]: Finished difference Result 7213 states and 11094 transitions. [2022-07-12 12:37:01,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 12:37:01,197 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 4 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) Word has length 183 [2022-07-12 12:37:01,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:37:01,217 INFO L225 Difference]: With dead ends: 7213 [2022-07-12 12:37:01,217 INFO L226 Difference]: Without dead ends: 4774 [2022-07-12 12:37:01,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2022-07-12 12:37:01,227 INFO L413 NwaCegarLoop]: 550 mSDtfsCounter, 360 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 1965 mSolverCounterSat, 276 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 3277 SdHoareTripleChecker+Invalid, 2241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 276 IncrementalHoareTripleChecker+Valid, 1965 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-12 12:37:01,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 3277 Invalid, 2241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [276 Valid, 1965 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-12 12:37:01,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4774 states. [2022-07-12 12:37:01,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4774 to 2844. [2022-07-12 12:37:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2217 states have (on average 1.363103292737934) internal successors, (3022), 2217 states have internal predecessors, (3022), 443 states have call successors, (443), 132 states have call predecessors, (443), 183 states have return successors, (722), 494 states have call predecessors, (722), 442 states have call successors, (722) [2022-07-12 12:37:01,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 4187 transitions. [2022-07-12 12:37:01,443 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 4187 transitions. Word has length 183 [2022-07-12 12:37:01,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:37:01,444 INFO L495 AbstractCegarLoop]: Abstraction has 2844 states and 4187 transitions. [2022-07-12 12:37:01,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 10.7) internal successors, (107), 6 states have internal predecessors, (107), 4 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 3 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-12 12:37:01,445 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 4187 transitions. [2022-07-12 12:37:01,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-12 12:37:01,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:37:01,453 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:37:01,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 12:37:01,453 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:37:01,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:37:01,454 INFO L85 PathProgramCache]: Analyzing trace with hash -925194800, now seen corresponding path program 1 times [2022-07-12 12:37:01,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:37:01,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782151589] [2022-07-12 12:37:01,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:37:01,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:37:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:37:01,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:37:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:37:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:37:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 12:37:01,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 12:37:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 12:37:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:37:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 12:37:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:37:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 12:37:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:37:01,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:37:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:37:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:37:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 12:37:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 12:37:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 12:37:01,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 12:37:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:37:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:01,972 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-12 12:37:01,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:37:01,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782151589] [2022-07-12 12:37:01,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782151589] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:37:01,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448767116] [2022-07-12 12:37:01,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:37:01,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:37:01,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:37:01,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:37:01,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 12:37:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:02,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1684 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 12:37:02,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:37:02,607 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-12 12:37:02,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:37:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-12 12:37:02,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448767116] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 12:37:02,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 12:37:02,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12, 5] total 13 [2022-07-12 12:37:02,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869334775] [2022-07-12 12:37:02,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:37:02,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 12:37:02,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:37:02,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 12:37:02,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:37:02,752 INFO L87 Difference]: Start difference. First operand 2844 states and 4187 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 12:37:03,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:37:03,023 INFO L93 Difference]: Finished difference Result 5691 states and 8534 transitions. [2022-07-12 12:37:03,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 12:37:03,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 184 [2022-07-12 12:37:03,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:37:03,034 INFO L225 Difference]: With dead ends: 5691 [2022-07-12 12:37:03,034 INFO L226 Difference]: Without dead ends: 2876 [2022-07-12 12:37:03,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 400 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:37:03,044 INFO L413 NwaCegarLoop]: 409 mSDtfsCounter, 3 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1206 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:37:03,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1206 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 12:37:03,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2876 states. [2022-07-12 12:37:03,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2876 to 2852. [2022-07-12 12:37:03,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2852 states, 2225 states have (on average 1.3617977528089888) internal successors, (3030), 2225 states have internal predecessors, (3030), 443 states have call successors, (443), 132 states have call predecessors, (443), 183 states have return successors, (722), 494 states have call predecessors, (722), 442 states have call successors, (722) [2022-07-12 12:37:03,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 4195 transitions. [2022-07-12 12:37:03,226 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 4195 transitions. Word has length 184 [2022-07-12 12:37:03,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:37:03,226 INFO L495 AbstractCegarLoop]: Abstraction has 2852 states and 4195 transitions. [2022-07-12 12:37:03,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-12 12:37:03,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 4195 transitions. [2022-07-12 12:37:03,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-12 12:37:03,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:37:03,234 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:37:03,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 12:37:03,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:37:03,452 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:37:03,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:37:03,452 INFO L85 PathProgramCache]: Analyzing trace with hash 536068470, now seen corresponding path program 1 times [2022-07-12 12:37:03,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:37:03,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801776698] [2022-07-12 12:37:03,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:37:03,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:37:03,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:03,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:37:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:03,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:37:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:03,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:37:03,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:03,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:37:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:03,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 12:37:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:03,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 12:37:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:03,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 12:37:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:03,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:37:03,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:04,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:37:04,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:04,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:37:04,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:04,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:37:04,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:04,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:37:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:05,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:37:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:05,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:37:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:05,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:37:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:05,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 12:37:05,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 12:37:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:05,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 12:37:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:05,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 12:37:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:05,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:37:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 29 proven. 11 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-12 12:37:05,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:37:05,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801776698] [2022-07-12 12:37:05,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801776698] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:37:05,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489551781] [2022-07-12 12:37:05,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:37:05,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:37:05,360 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:37:05,361 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:37:05,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 12:37:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:37:05,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 67 conjunts are in the unsatisfiable core [2022-07-12 12:37:05,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:37:11,020 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 12:37:25,617 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 12:37:25,618 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2022-07-12 12:37:29,857 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-07-12 12:37:29,857 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 36 [2022-07-12 12:37:29,867 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-07-12 12:37:29,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-07-12 12:37:32,205 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-12 12:37:32,206 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 31 [2022-07-12 12:37:32,436 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-07-12 12:37:32,593 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 38 proven. 16 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 12:37:32,593 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:37:32,809 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 327 treesize of output 309 [2022-07-12 12:37:32,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 302 treesize of output 294 [2022-07-12 12:37:32,821 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 294 treesize of output 278 [2022-07-12 12:37:32,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 278 treesize of output 246 [2022-07-12 12:37:33,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489551781] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:37:33,400 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 12:37:33,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 27] total 63 [2022-07-12 12:37:33,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820188606] [2022-07-12 12:37:33,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 12:37:33,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-07-12 12:37:33,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:37:33,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-07-12 12:37:33,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=4359, Unknown=37, NotChecked=0, Total=4692 [2022-07-12 12:37:33,404 INFO L87 Difference]: Start difference. First operand 2852 states and 4195 transitions. Second operand has 63 states, 63 states have (on average 3.4761904761904763) internal successors, (219), 49 states have internal predecessors, (219), 22 states have call successors, (40), 11 states have call predecessors, (40), 18 states have return successors, (39), 26 states have call predecessors, (39), 21 states have call successors, (39) [2022-07-12 12:37:38,013 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:38:39,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:38:39,500 INFO L93 Difference]: Finished difference Result 15430 states and 24074 transitions. [2022-07-12 12:38:39,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-07-12 12:38:39,501 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 3.4761904761904763) internal successors, (219), 49 states have internal predecessors, (219), 22 states have call successors, (40), 11 states have call predecessors, (40), 18 states have return successors, (39), 26 states have call predecessors, (39), 21 states have call successors, (39) Word has length 184 [2022-07-12 12:38:39,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:38:39,573 INFO L225 Difference]: With dead ends: 15430 [2022-07-12 12:38:39,574 INFO L226 Difference]: Without dead ends: 13772 [2022-07-12 12:38:39,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 271 SyntacticMatches, 2 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17707 ImplicationChecksByTransitivity, 63.5s TimeCoverageRelationStatistics Valid=2739, Invalid=48024, Unknown=87, NotChecked=0, Total=50850 [2022-07-12 12:38:39,600 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 2464 mSDsluCounter, 15112 mSDsCounter, 0 mSdLazyCounter, 16914 mSolverCounterSat, 1191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2568 SdHoareTripleChecker+Valid, 15934 SdHoareTripleChecker+Invalid, 21005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1191 IncrementalHoareTripleChecker+Valid, 16914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2900 IncrementalHoareTripleChecker+Unchecked, 28.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:38:39,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2568 Valid, 15934 Invalid, 21005 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1191 Valid, 16914 Invalid, 0 Unknown, 2900 Unchecked, 28.3s Time] [2022-07-12 12:38:39,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13772 states. [2022-07-12 12:38:40,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13772 to 9868. [2022-07-12 12:38:40,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9868 states, 7735 states have (on average 1.366645119586296) internal successors, (10571), 7771 states have internal predecessors, (10571), 1488 states have call successors, (1488), 445 states have call predecessors, (1488), 644 states have return successors, (2784), 1651 states have call predecessors, (2784), 1487 states have call successors, (2784) [2022-07-12 12:38:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9868 states to 9868 states and 14843 transitions. [2022-07-12 12:38:40,480 INFO L78 Accepts]: Start accepts. Automaton has 9868 states and 14843 transitions. Word has length 184 [2022-07-12 12:38:40,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:38:40,481 INFO L495 AbstractCegarLoop]: Abstraction has 9868 states and 14843 transitions. [2022-07-12 12:38:40,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 3.4761904761904763) internal successors, (219), 49 states have internal predecessors, (219), 22 states have call successors, (40), 11 states have call predecessors, (40), 18 states have return successors, (39), 26 states have call predecessors, (39), 21 states have call successors, (39) [2022-07-12 12:38:40,481 INFO L276 IsEmpty]: Start isEmpty. Operand 9868 states and 14843 transitions. [2022-07-12 12:38:40,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-12 12:38:40,506 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:38:40,506 INFO L195 NwaCegarLoop]: trace histogram [8, 6, 6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:38:40,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 12:38:40,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:38:40,723 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:38:40,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:38:40,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1898356068, now seen corresponding path program 2 times [2022-07-12 12:38:40,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:38:40,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603905080] [2022-07-12 12:38:40,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:38:40,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:38:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:40,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:38:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:40,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 12:38:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:40,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:38:40,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:40,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 12:38:40,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:40,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 12:38:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:40,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 12:38:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:40,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 12:38:40,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:38:41,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 12:38:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 12:38:41,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:38:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:38:41,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:38:41,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:38:41,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 12:38:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:38:41,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 12:38:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 12:38:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 12:38:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 12:38:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:38:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:38:41,277 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-12 12:38:41,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:38:41,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603905080] [2022-07-12 12:38:41,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603905080] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:38:41,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453002285] [2022-07-12 12:38:41,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 12:38:41,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 12:38:41,278 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:38:41,280 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 12:38:41,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 12:38:42,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 12:38:42,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 12:38:42,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 1635 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-12 12:38:42,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 12:38:42,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-07-12 12:38:56,668 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-07-12 12:39:15,737 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 19 proven. 11 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-12 12:39:15,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 12:39:31,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453002285] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 12:39:31,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 12:39:31,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 13] total 23 [2022-07-12 12:39:31,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575192540] [2022-07-12 12:39:31,897 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 12:39:31,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 12:39:31,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:39:31,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 12:39:31,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=452, Unknown=24, NotChecked=0, Total=552 [2022-07-12 12:39:31,898 INFO L87 Difference]: Start difference. First operand 9868 states and 14843 transitions. Second operand has 23 states, 23 states have (on average 6.391304347826087) internal successors, (147), 16 states have internal predecessors, (147), 8 states have call successors, (40), 9 states have call predecessors, (40), 5 states have return successors, (28), 8 states have call predecessors, (28), 7 states have call successors, (28) [2022-07-12 12:39:33,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []