./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.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 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:44:19,434 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:44:19,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:44:19,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:44:19,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:44:19,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:44:19,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:44:19,462 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:44:19,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:44:19,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:44:19,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:44:19,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:44:19,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:44:19,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:44:19,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:44:19,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:44:19,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:44:19,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:44:19,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:44:19,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:44:19,475 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:44:19,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:44:19,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:44:19,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:44:19,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:44:19,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:44:19,481 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:44:19,482 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:44:19,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:44:19,483 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:44:19,484 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:44:19,484 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:44:19,485 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:44:19,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:44:19,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:44:19,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:44:19,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:44:19,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:44:19,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:44:19,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:44:19,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:44:19,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:44:19,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:44:19,508 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:44:19,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:44:19,509 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:44:19,509 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:44:19,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:44:19,510 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:44:19,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:44:19,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:44:19,511 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:44:19,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:44:19,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:44:19,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:44:19,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:44:19,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:44:19,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:44:19,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:44:19,513 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:44:19,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:44:19,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:44:19,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:44:19,515 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:44:19,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:44:19,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:44:19,518 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:44:19,518 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:44:19,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:44:19,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:44:19,518 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:44:19,519 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:44:19,519 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:44:19,519 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d [2022-07-22 23:44:19,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:44:19,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:44:19,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:44:19,756 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:44:19,757 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:44:19,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-07-22 23:44:19,834 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/942283108/f6e9afd6616d4c529b9a4d09be93dcee/FLAG6704c87a8 [2022-07-22 23:44:20,529 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:44:20,530 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-07-22 23:44:20,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/942283108/f6e9afd6616d4c529b9a4d09be93dcee/FLAG6704c87a8 [2022-07-22 23:44:20,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/942283108/f6e9afd6616d4c529b9a4d09be93dcee [2022-07-22 23:44:20,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:44:20,840 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:44:20,841 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:44:20,841 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:44:20,844 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:44:20,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:44:20" (1/1) ... [2022-07-22 23:44:20,845 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@213c4bf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:20, skipping insertion in model container [2022-07-22 23:44:20,845 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:44:20" (1/1) ... [2022-07-22 23:44:20,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:44:20,966 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:44:21,791 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2022-07-22 23:44:22,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:44:22,352 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:44:22,485 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i[116401,116414] [2022-07-22 23:44:22,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:44:22,835 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:44:22,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:22 WrapperNode [2022-07-22 23:44:22,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:44:22,839 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:44:22,839 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:44:22,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:44:22,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:22" (1/1) ... [2022-07-22 23:44:22,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:22" (1/1) ... [2022-07-22 23:44:23,203 INFO L137 Inliner]: procedures = 245, calls = 3306, calls flagged for inlining = 118, calls inlined = 118, statements flattened = 6447 [2022-07-22 23:44:23,204 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:44:23,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:44:23,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:44:23,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:44:23,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:22" (1/1) ... [2022-07-22 23:44:23,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:22" (1/1) ... [2022-07-22 23:44:23,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:22" (1/1) ... [2022-07-22 23:44:23,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:22" (1/1) ... [2022-07-22 23:44:23,404 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:22" (1/1) ... [2022-07-22 23:44:23,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:22" (1/1) ... [2022-07-22 23:44:23,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:22" (1/1) ... [2022-07-22 23:44:23,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:44:23,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:44:23,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:44:23,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:44:23,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:22" (1/1) ... [2022-07-22 23:44:23,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:44:23,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:44:23,576 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) [2022-07-22 23:44:23,603 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 [2022-07-22 23:44:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2022-07-22 23:44:23,619 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2022-07-22 23:44:23,619 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2022-07-22 23:44:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2022-07-22 23:44:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_18 [2022-07-22 23:44:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_18 [2022-07-22 23:44:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 23:44:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:44:23,620 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-22 23:44:23,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-22 23:44:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_destruct [2022-07-22 23:44:23,621 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_destruct [2022-07-22 23:44:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-07-22 23:44:23,621 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-07-22 23:44:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-22 23:44:23,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-22 23:44:23,621 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_22 [2022-07-22 23:44:23,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_22 [2022-07-22 23:44:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2022-07-22 23:44:23,622 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2022-07-22 23:44:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:44:23,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:44:23,622 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-07-22 23:44:23,622 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-07-22 23:44:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-22 23:44:23,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-22 23:44:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2022-07-22 23:44:23,623 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2022-07-22 23:44:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:44:23,623 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:44:23,623 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:44:23,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:44:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-07-22 23:44:23,624 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-07-22 23:44:23,624 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-22 23:44:23,624 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-22 23:44:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-22 23:44:23,625 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-22 23:44:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 23:44:23,625 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 23:44:23,625 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-22 23:44:23,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-22 23:44:23,626 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-22 23:44:23,626 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-22 23:44:23,626 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2022-07-22 23:44:23,626 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2022-07-22 23:44:23,626 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2022-07-22 23:44:23,626 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2022-07-22 23:44:23,627 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2022-07-22 23:44:23,627 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2022-07-22 23:44:23,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:44:23,627 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-22 23:44:23,627 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2022-07-22 23:44:23,627 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2022-07-22 23:44:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-07-22 23:44:23,628 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-07-22 23:44:23,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:44:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2022-07-22 23:44:23,629 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2022-07-22 23:44:23,629 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2022-07-22 23:44:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2022-07-22 23:44:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-22 23:44:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-22 23:44:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-22 23:44:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2022-07-22 23:44:23,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2022-07-22 23:44:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:44:23,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:44:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-22 23:44:23,631 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-22 23:44:23,631 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-07-22 23:44:23,631 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-07-22 23:44:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 23:44:23,632 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 23:44:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-22 23:44:23,632 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-22 23:44:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-22 23:44:23,632 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-22 23:44:23,632 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2022-07-22 23:44:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2022-07-22 23:44:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_shutdown [2022-07-22 23:44:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_shutdown [2022-07-22 23:44:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2022-07-22 23:44:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2022-07-22 23:44:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2022-07-22 23:44:23,633 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2022-07-22 23:44:23,633 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 23:44:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-22 23:44:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-22 23:44:23,634 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-22 23:44:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-22 23:44:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2022-07-22 23:44:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2022-07-22 23:44:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-22 23:44:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-22 23:44:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 23:44:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2022-07-22 23:44:23,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2022-07-22 23:44:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2022-07-22 23:44:23,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2022-07-22 23:44:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2022-07-22 23:44:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2022-07-22 23:44:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:44:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2022-07-22 23:44:23,637 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2022-07-22 23:44:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-07-22 23:44:23,638 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-07-22 23:44:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-22 23:44:23,638 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-22 23:44:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-22 23:44:23,638 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-22 23:44:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2022-07-22 23:44:23,639 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2022-07-22 23:44:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2022-07-22 23:44:23,639 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2022-07-22 23:44:23,639 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-22 23:44:23,639 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-22 23:44:23,640 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-22 23:44:23,640 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-22 23:44:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2022-07-22 23:44:23,641 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2022-07-22 23:44:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2022-07-22 23:44:23,641 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2022-07-22 23:44:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:44:23,641 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:44:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:44:23,641 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2022-07-22 23:44:23,642 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2022-07-22 23:44:23,642 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2022-07-22 23:44:23,642 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2022-07-22 23:44:23,642 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2022-07-22 23:44:23,642 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2022-07-22 23:44:23,642 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-22 23:44:23,642 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-22 23:44:23,643 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:44:23,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:44:23,643 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2022-07-22 23:44:23,643 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2022-07-22 23:44:23,643 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2022-07-22 23:44:23,643 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2022-07-22 23:44:23,643 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:44:23,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2022-07-22 23:44:23,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2022-07-22 23:44:23,644 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:44:23,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-22 23:44:23,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-22 23:44:23,644 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:44:23,644 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_17 [2022-07-22 23:44:23,644 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_17 [2022-07-22 23:44:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:44:23,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:44:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-22 23:44:23,645 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-22 23:44:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-07-22 23:44:23,645 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-07-22 23:44:23,645 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2022-07-22 23:44:23,645 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2022-07-22 23:44:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_irq [2022-07-22 23:44:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_irq [2022-07-22 23:44:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2022-07-22 23:44:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2022-07-22 23:44:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2022-07-22 23:44:23,646 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2022-07-22 23:44:23,646 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2022-07-22 23:44:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2022-07-22 23:44:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-22 23:44:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-22 23:44:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-22 23:44:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-22 23:44:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:44:23,647 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-22 23:44:23,647 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-22 23:44:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-22 23:44:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-22 23:44:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2022-07-22 23:44:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2022-07-22 23:44:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:44:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:44:23,648 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-07-22 23:44:23,648 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-07-22 23:44:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_bulk_callback [2022-07-22 23:44:23,649 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_bulk_callback [2022-07-22 23:44:23,649 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-22 23:44:23,649 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-22 23:44:24,379 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:44:24,392 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:44:24,733 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-22 23:44:25,198 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-22 23:44:31,495 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:44:31,518 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:44:31,518 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:44:31,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:44:31 BoogieIcfgContainer [2022-07-22 23:44:31,524 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:44:31,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:44:31,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:44:31,529 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:44:31,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:44:20" (1/3) ... [2022-07-22 23:44:31,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4276ce14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:44:31, skipping insertion in model container [2022-07-22 23:44:31,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:44:22" (2/3) ... [2022-07-22 23:44:31,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4276ce14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:44:31, skipping insertion in model container [2022-07-22 23:44:31,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:44:31" (3/3) ... [2022-07-22 23:44:31,532 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-07-22 23:44:31,545 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:44:31,545 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:44:31,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:44:31,705 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@4459857a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@31af4ca [2022-07-22 23:44:31,706 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:44:31,715 INFO L276 IsEmpty]: Start isEmpty. Operand has 1511 states, 1082 states have (on average 1.353974121996303) internal successors, (1465), 1118 states have internal predecessors, (1465), 346 states have call successors, (346), 83 states have call predecessors, (346), 81 states have return successors, (335), 327 states have call predecessors, (335), 335 states have call successors, (335) [2022-07-22 23:44:31,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-22 23:44:31,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:44:31,747 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:44:31,748 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:44:31,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:44:31,754 INFO L85 PathProgramCache]: Analyzing trace with hash -732994457, now seen corresponding path program 1 times [2022-07-22 23:44:31,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:44:31,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616210928] [2022-07-22 23:44:31,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:44:31,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:44:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:44:32,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:44:32,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:44:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:44:32,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:44:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:44:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:44:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:44:32,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:44:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 23:44:32,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:44:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:44:32,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:44:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:44:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:44:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-22 23:44:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 23:44:32,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:32,840 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-22 23:44:32,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:44:32,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616210928] [2022-07-22 23:44:32,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616210928] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:44:32,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:44:32,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:44:32,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199661528] [2022-07-22 23:44:32,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:44:32,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:44:32,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:44:32,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:44:32,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:44:32,877 INFO L87 Difference]: Start difference. First operand has 1511 states, 1082 states have (on average 1.353974121996303) internal successors, (1465), 1118 states have internal predecessors, (1465), 346 states have call successors, (346), 83 states have call predecessors, (346), 81 states have return successors, (335), 327 states have call predecessors, (335), 335 states have call successors, (335) Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:44:36,603 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:44:38,636 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:44:45,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:44:45,059 INFO L93 Difference]: Finished difference Result 4625 states and 6784 transitions. [2022-07-22 23:44:45,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:44:45,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 117 [2022-07-22 23:44:45,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:44:45,101 INFO L225 Difference]: With dead ends: 4625 [2022-07-22 23:44:45,102 INFO L226 Difference]: Without dead ends: 3085 [2022-07-22 23:44:45,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:44:45,123 INFO L413 NwaCegarLoop]: 2294 mSDtfsCounter, 3054 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 2327 mSolverCounterSat, 1669 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3309 SdHoareTripleChecker+Valid, 5868 SdHoareTripleChecker+Invalid, 3998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1669 IncrementalHoareTripleChecker+Valid, 2327 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:44:45,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3309 Valid, 5868 Invalid, 3998 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1669 Valid, 2327 Invalid, 2 Unknown, 0 Unchecked, 11.7s Time] [2022-07-22 23:44:45,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2022-07-22 23:44:45,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 2898. [2022-07-22 23:44:45,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2898 states, 2099 states have (on average 1.3392091472129586) internal successors, (2811), 2140 states have internal predecessors, (2811), 638 states have call successors, (638), 161 states have call predecessors, (638), 160 states have return successors, (632), 616 states have call predecessors, (632), 632 states have call successors, (632) [2022-07-22 23:44:45,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 4081 transitions. [2022-07-22 23:44:45,345 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 4081 transitions. Word has length 117 [2022-07-22 23:44:45,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:44:45,347 INFO L495 AbstractCegarLoop]: Abstraction has 2898 states and 4081 transitions. [2022-07-22 23:44:45,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (18), 4 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:44:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 4081 transitions. [2022-07-22 23:44:45,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 23:44:45,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:44:45,353 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:44:45,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:44:45,354 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:44:45,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:44:45,354 INFO L85 PathProgramCache]: Analyzing trace with hash 432030469, now seen corresponding path program 1 times [2022-07-22 23:44:45,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:44:45,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501836767] [2022-07-22 23:44:45,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:44:45,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:44:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:44:45,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:44:45,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:44:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:44:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:44:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:44:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:44:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:44:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:44:45,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 23:44:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:44:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:44:45,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:44:45,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:44:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:44:45,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:44:45,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 23:44:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:44:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:44:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-22 23:44:45,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:44:45,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501836767] [2022-07-22 23:44:45,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501836767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:44:45,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:44:45,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:44:45,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662762560] [2022-07-22 23:44:45,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:44:45,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:44:45,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:44:45,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:44:45,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:44:45,995 INFO L87 Difference]: Start difference. First operand 2898 states and 4081 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:44:49,891 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:44:51,914 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:45:00,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:00,848 INFO L93 Difference]: Finished difference Result 9211 states and 13363 transitions. [2022-07-22 23:45:00,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:45:00,852 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 129 [2022-07-22 23:45:00,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:00,899 INFO L225 Difference]: With dead ends: 9211 [2022-07-22 23:45:00,899 INFO L226 Difference]: Without dead ends: 6346 [2022-07-22 23:45:00,918 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:45:00,919 INFO L413 NwaCegarLoop]: 2388 mSDtfsCounter, 3204 mSDsluCounter, 4799 mSDsCounter, 0 mSdLazyCounter, 3319 mSolverCounterSat, 1789 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3456 SdHoareTripleChecker+Valid, 7187 SdHoareTripleChecker+Invalid, 5110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1789 IncrementalHoareTripleChecker+Valid, 3319 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:00,919 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3456 Valid, 7187 Invalid, 5110 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1789 Valid, 3319 Invalid, 2 Unknown, 0 Unchecked, 14.3s Time] [2022-07-22 23:45:00,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6346 states. [2022-07-22 23:45:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6346 to 5859. [2022-07-22 23:45:01,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5859 states, 4247 states have (on average 1.3376501059571462) internal successors, (5681), 4330 states have internal predecessors, (5681), 1273 states have call successors, (1273), 321 states have call predecessors, (1273), 338 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2022-07-22 23:45:01,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8341 transitions. [2022-07-22 23:45:01,248 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8341 transitions. Word has length 129 [2022-07-22 23:45:01,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:01,249 INFO L495 AbstractCegarLoop]: Abstraction has 5859 states and 8341 transitions. [2022-07-22 23:45:01,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 3 states have internal predecessors, (53), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:45:01,250 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8341 transitions. [2022-07-22 23:45:01,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 23:45:01,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:01,260 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:45:01,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:45:01,261 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:01,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:01,261 INFO L85 PathProgramCache]: Analyzing trace with hash 507342559, now seen corresponding path program 1 times [2022-07-22 23:45:01,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:01,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188251280] [2022-07-22 23:45:01,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:01,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:45:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:45:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:45:01,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:45:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:45:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:45:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:45:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:45:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 23:45:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:45:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:45:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:45:01,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:45:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:45:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:45:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 23:45:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-22 23:45:01,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:01,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188251280] [2022-07-22 23:45:01,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188251280] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:01,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:01,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:45:01,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141471343] [2022-07-22 23:45:01,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:01,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:45:01,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:01,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:45:01,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:45:01,871 INFO L87 Difference]: Start difference. First operand 5859 states and 8341 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:45:05,247 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:45:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:08,383 INFO L93 Difference]: Finished difference Result 6337 states and 9175 transitions. [2022-07-22 23:45:08,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:45:08,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 130 [2022-07-22 23:45:08,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:08,427 INFO L225 Difference]: With dead ends: 6337 [2022-07-22 23:45:08,427 INFO L226 Difference]: Without dead ends: 6334 [2022-07-22 23:45:08,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:45:08,438 INFO L413 NwaCegarLoop]: 1976 mSDtfsCounter, 2769 mSDsluCounter, 2088 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 1390 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3014 SdHoareTripleChecker+Valid, 4064 SdHoareTripleChecker+Invalid, 2551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1390 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:08,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3014 Valid, 4064 Invalid, 2551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1390 Valid, 1160 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2022-07-22 23:45:08,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6334 states. [2022-07-22 23:45:08,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6334 to 5858. [2022-07-22 23:45:08,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5858 states, 4247 states have (on average 1.337414645632211) internal successors, (5680), 4329 states have internal predecessors, (5680), 1272 states have call successors, (1272), 321 states have call predecessors, (1272), 338 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2022-07-22 23:45:08,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 8339 transitions. [2022-07-22 23:45:08,732 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 8339 transitions. Word has length 130 [2022-07-22 23:45:08,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:08,732 INFO L495 AbstractCegarLoop]: Abstraction has 5858 states and 8339 transitions. [2022-07-22 23:45:08,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:45:08,733 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 8339 transitions. [2022-07-22 23:45:08,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-22 23:45:08,736 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:08,737 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:45:08,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:45:08,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:08,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:08,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1452945080, now seen corresponding path program 1 times [2022-07-22 23:45:08,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:08,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738226349] [2022-07-22 23:45:08,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:08,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:08,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:45:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:45:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:45:09,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:45:09,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:45:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:45:09,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:45:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:45:09,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 23:45:09,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:45:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:45:09,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:45:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:45:09,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:45:09,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:45:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 23:45:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-22 23:45:09,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:09,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738226349] [2022-07-22 23:45:09,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738226349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:09,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:09,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:45:09,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440290446] [2022-07-22 23:45:09,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:09,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:45:09,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:09,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:45:09,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:45:09,210 INFO L87 Difference]: Start difference. First operand 5858 states and 8339 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:45:12,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:45:14,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:45:19,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:19,267 INFO L93 Difference]: Finished difference Result 6336 states and 9173 transitions. [2022-07-22 23:45:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:45:19,268 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2022-07-22 23:45:19,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:19,304 INFO L225 Difference]: With dead ends: 6336 [2022-07-22 23:45:19,304 INFO L226 Difference]: Without dead ends: 6333 [2022-07-22 23:45:19,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:45:19,309 INFO L413 NwaCegarLoop]: 1972 mSDtfsCounter, 2500 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 1035 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2745 SdHoareTripleChecker+Valid, 4959 SdHoareTripleChecker+Invalid, 2739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1035 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:19,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2745 Valid, 4959 Invalid, 2739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1035 Valid, 1702 Invalid, 2 Unknown, 0 Unchecked, 9.8s Time] [2022-07-22 23:45:19,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6333 states. [2022-07-22 23:45:19,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6333 to 5857. [2022-07-22 23:45:19,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5857 states, 4247 states have (on average 1.3371791853072756) internal successors, (5679), 4328 states have internal predecessors, (5679), 1271 states have call successors, (1271), 321 states have call predecessors, (1271), 338 states have return successors, (1387), 1251 states have call predecessors, (1387), 1267 states have call successors, (1387) [2022-07-22 23:45:19,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 8337 transitions. [2022-07-22 23:45:19,591 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 8337 transitions. Word has length 131 [2022-07-22 23:45:19,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:19,593 INFO L495 AbstractCegarLoop]: Abstraction has 5857 states and 8337 transitions. [2022-07-22 23:45:19,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:45:19,594 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 8337 transitions. [2022-07-22 23:45:19,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-22 23:45:19,598 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:19,598 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:45:19,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:45:19,598 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:19,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:19,599 INFO L85 PathProgramCache]: Analyzing trace with hash -2092314878, now seen corresponding path program 1 times [2022-07-22 23:45:19,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:19,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098157168] [2022-07-22 23:45:19,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:19,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:19,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:19,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:45:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:45:19,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:19,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:45:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:19,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:45:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:19,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:45:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:19,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:45:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:45:20,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:45:20,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 23:45:20,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:45:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:45:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:45:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:45:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:45:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:45:20,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 23:45:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:20,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:20,139 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-22 23:45:20,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:20,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098157168] [2022-07-22 23:45:20,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098157168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:20,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:20,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:45:20,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729875837] [2022-07-22 23:45:20,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:20,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:45:20,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:20,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:45:20,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:45:20,144 INFO L87 Difference]: Start difference. First operand 5857 states and 8337 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:45:24,598 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:45:26,629 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:45:33,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:33,321 INFO L93 Difference]: Finished difference Result 18386 states and 26825 transitions. [2022-07-22 23:45:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:45:33,324 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 132 [2022-07-22 23:45:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:33,405 INFO L225 Difference]: With dead ends: 18386 [2022-07-22 23:45:33,405 INFO L226 Difference]: Without dead ends: 12562 [2022-07-22 23:45:33,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:45:33,442 INFO L413 NwaCegarLoop]: 2479 mSDtfsCounter, 3055 mSDsluCounter, 5015 mSDsCounter, 0 mSdLazyCounter, 3276 mSolverCounterSat, 1711 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3312 SdHoareTripleChecker+Valid, 7494 SdHoareTripleChecker+Invalid, 4989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1711 IncrementalHoareTripleChecker+Valid, 3276 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:33,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3312 Valid, 7494 Invalid, 4989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1711 Valid, 3276 Invalid, 2 Unknown, 0 Unchecked, 12.7s Time] [2022-07-22 23:45:33,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12562 states. [2022-07-22 23:45:33,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12562 to 11696. [2022-07-22 23:45:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11696 states, 8493 states have (on average 1.3380430943129635) internal successors, (11364), 8663 states have internal predecessors, (11364), 2512 states have call successors, (2512), 638 states have call predecessors, (2512), 690 states have return successors, (2955), 2486 states have call predecessors, (2955), 2505 states have call successors, (2955) [2022-07-22 23:45:34,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11696 states to 11696 states and 16831 transitions. [2022-07-22 23:45:34,005 INFO L78 Accepts]: Start accepts. Automaton has 11696 states and 16831 transitions. Word has length 132 [2022-07-22 23:45:34,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:34,005 INFO L495 AbstractCegarLoop]: Abstraction has 11696 states and 16831 transitions. [2022-07-22 23:45:34,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:45:34,005 INFO L276 IsEmpty]: Start isEmpty. Operand 11696 states and 16831 transitions. [2022-07-22 23:45:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 23:45:34,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:34,010 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:45:34,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:45:34,010 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:34,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:34,011 INFO L85 PathProgramCache]: Analyzing trace with hash -437937269, now seen corresponding path program 1 times [2022-07-22 23:45:34,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:34,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876310108] [2022-07-22 23:45:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:34,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:45:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:45:34,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:45:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:45:34,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:45:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:45:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:45:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:45:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 23:45:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:45:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:45:34,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:45:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:45:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:45:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:45:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 23:45:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:34,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:34,424 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-22 23:45:34,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:34,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876310108] [2022-07-22 23:45:34,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876310108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:34,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:34,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:45:34,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016352222] [2022-07-22 23:45:34,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:34,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:45:34,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:34,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:45:34,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:45:34,427 INFO L87 Difference]: Start difference. First operand 11696 states and 16831 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:45:38,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:45:40,455 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:45:44,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:44,362 INFO L93 Difference]: Finished difference Result 12542 states and 18323 transitions. [2022-07-22 23:45:44,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:45:44,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 133 [2022-07-22 23:45:44,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:44,426 INFO L225 Difference]: With dead ends: 12542 [2022-07-22 23:45:44,427 INFO L226 Difference]: Without dead ends: 12521 [2022-07-22 23:45:44,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:45:44,441 INFO L413 NwaCegarLoop]: 1968 mSDtfsCounter, 2489 mSDsluCounter, 3025 mSDsCounter, 0 mSdLazyCounter, 1702 mSolverCounterSat, 1030 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2735 SdHoareTripleChecker+Valid, 4993 SdHoareTripleChecker+Invalid, 2734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1030 IncrementalHoareTripleChecker+Valid, 1702 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:44,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2735 Valid, 4993 Invalid, 2734 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1030 Valid, 1702 Invalid, 2 Unknown, 0 Unchecked, 9.5s Time] [2022-07-22 23:45:44,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12521 states. [2022-07-22 23:45:44,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12521 to 11677. [2022-07-22 23:45:44,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11677 states, 8479 states have (on average 1.3380115579667413) internal successors, (11345), 8648 states have internal predecessors, (11345), 2509 states have call successors, (2509), 636 states have call predecessors, (2509), 688 states have return successors, (2953), 2484 states have call predecessors, (2953), 2503 states have call successors, (2953) [2022-07-22 23:45:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11677 states to 11677 states and 16807 transitions. [2022-07-22 23:45:45,043 INFO L78 Accepts]: Start accepts. Automaton has 11677 states and 16807 transitions. Word has length 133 [2022-07-22 23:45:45,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:45,043 INFO L495 AbstractCegarLoop]: Abstraction has 11677 states and 16807 transitions. [2022-07-22 23:45:45,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (19), 5 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:45:45,044 INFO L276 IsEmpty]: Start isEmpty. Operand 11677 states and 16807 transitions. [2022-07-22 23:45:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-22 23:45:45,055 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:45,055 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 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] [2022-07-22 23:45:45,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:45:45,056 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:45,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:45,056 INFO L85 PathProgramCache]: Analyzing trace with hash 419378913, now seen corresponding path program 1 times [2022-07-22 23:45:45,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:45,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713908187] [2022-07-22 23:45:45,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:45,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:45:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:45:45,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:45:45,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:45:45,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:45:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:45:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:45:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:45:45,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 23:45:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:45:45,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:45:45,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:45:45,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:45:45,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:45:45,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:45:45,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 23:45:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 23:45:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-22 23:45:45,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-22 23:45:45,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:45,485 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2022-07-22 23:45:45,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:45,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713908187] [2022-07-22 23:45:45,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713908187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:45,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:45,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:45:45,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142132957] [2022-07-22 23:45:45,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:45,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:45:45,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:45,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:45:45,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:45:45,488 INFO L87 Difference]: Start difference. First operand 11677 states and 16807 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-22 23:45:49,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:45:51,812 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:45:53,831 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:46:05,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:05,034 INFO L93 Difference]: Finished difference Result 37229 states and 54433 transitions. [2022-07-22 23:46:05,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 23:46:05,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 154 [2022-07-22 23:46:05,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:05,168 INFO L225 Difference]: With dead ends: 37229 [2022-07-22 23:46:05,168 INFO L226 Difference]: Without dead ends: 25585 [2022-07-22 23:46:05,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-07-22 23:46:05,231 INFO L413 NwaCegarLoop]: 2090 mSDtfsCounter, 3560 mSDsluCounter, 4127 mSDsCounter, 0 mSdLazyCounter, 5248 mSolverCounterSat, 1541 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3889 SdHoareTripleChecker+Valid, 6217 SdHoareTripleChecker+Invalid, 6792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1541 IncrementalHoareTripleChecker+Valid, 5248 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:05,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3889 Valid, 6217 Invalid, 6792 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1541 Valid, 5248 Invalid, 3 Unknown, 0 Unchecked, 18.5s Time] [2022-07-22 23:46:05,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25585 states. [2022-07-22 23:46:06,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25585 to 23267. [2022-07-22 23:46:06,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23267 states, 16893 states have (on average 1.3353460013023146) internal successors, (22558), 17268 states have internal predecessors, (22558), 4914 states have call successors, (4914), 1261 states have call predecessors, (4914), 1459 states have return successors, (6142), 4929 states have call predecessors, (6142), 4908 states have call successors, (6142) [2022-07-22 23:46:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23267 states to 23267 states and 33614 transitions. [2022-07-22 23:46:06,572 INFO L78 Accepts]: Start accepts. Automaton has 23267 states and 33614 transitions. Word has length 154 [2022-07-22 23:46:06,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:06,572 INFO L495 AbstractCegarLoop]: Abstraction has 23267 states and 33614 transitions. [2022-07-22 23:46:06,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (24), 6 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-22 23:46:06,573 INFO L276 IsEmpty]: Start isEmpty. Operand 23267 states and 33614 transitions. [2022-07-22 23:46:06,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-22 23:46:06,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:06,591 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:46:06,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:46:06,592 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:06,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:06,592 INFO L85 PathProgramCache]: Analyzing trace with hash -476457825, now seen corresponding path program 1 times [2022-07-22 23:46:06,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:06,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950791878] [2022-07-22 23:46:06,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:06,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:46:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:46:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:46:06,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:46:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:46:06,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:46:06,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:46:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 23:46:06,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:46:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:46:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:46:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:46:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:46:06,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 23:46:06,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 23:46:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 23:46:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-22 23:46:06,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:06,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-22 23:46:06,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-22 23:46:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:07,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-22 23:46:07,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:46:07,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-22 23:46:07,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,076 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-07-22 23:46:07,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:07,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950791878] [2022-07-22 23:46:07,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950791878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:07,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:46:07,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:46:07,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585692134] [2022-07-22 23:46:07,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:07,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:46:07,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:07,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:46:07,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:46:07,078 INFO L87 Difference]: Start difference. First operand 23267 states and 33614 transitions. Second operand has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-22 23:46:09,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:46:13,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:46:24,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:24,956 INFO L93 Difference]: Finished difference Result 66836 states and 96836 transitions. [2022-07-22 23:46:24,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:46:24,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 212 [2022-07-22 23:46:24,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:25,178 INFO L225 Difference]: With dead ends: 66836 [2022-07-22 23:46:25,178 INFO L226 Difference]: Without dead ends: 43612 [2022-07-22 23:46:25,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:46:25,267 INFO L413 NwaCegarLoop]: 2359 mSDtfsCounter, 2982 mSDsluCounter, 4491 mSDsCounter, 0 mSdLazyCounter, 5254 mSolverCounterSat, 1781 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3262 SdHoareTripleChecker+Valid, 6850 SdHoareTripleChecker+Invalid, 7037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1781 IncrementalHoareTripleChecker+Valid, 5254 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:25,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3262 Valid, 6850 Invalid, 7037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1781 Valid, 5254 Invalid, 2 Unknown, 0 Unchecked, 16.4s Time] [2022-07-22 23:46:25,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43612 states. [2022-07-22 23:46:27,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43612 to 40727. [2022-07-22 23:46:27,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40727 states, 29352 states have (on average 1.3204551648950669) internal successors, (38758), 30087 states have internal predecessors, (38758), 8654 states have call successors, (8654), 2322 states have call predecessors, (8654), 2720 states have return successors, (10996), 8685 states have call predecessors, (10996), 8648 states have call successors, (10996) [2022-07-22 23:46:27,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40727 states to 40727 states and 58408 transitions. [2022-07-22 23:46:27,611 INFO L78 Accepts]: Start accepts. Automaton has 40727 states and 58408 transitions. Word has length 212 [2022-07-22 23:46:27,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:27,612 INFO L495 AbstractCegarLoop]: Abstraction has 40727 states and 58408 transitions. [2022-07-22 23:46:27,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.428571428571429) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (35), 6 states have call predecessors, (35), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-07-22 23:46:27,613 INFO L276 IsEmpty]: Start isEmpty. Operand 40727 states and 58408 transitions. [2022-07-22 23:46:27,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-22 23:46:27,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:27,638 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:46:27,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:46:27,638 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:27,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:27,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1742817952, now seen corresponding path program 1 times [2022-07-22 23:46:27,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:27,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946775132] [2022-07-22 23:46:27,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:27,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:27,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:28,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:46:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:46:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:46:28,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:46:28,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:46:28,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:46:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:46:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 23:46:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:46:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:46:28,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:46:28,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:46:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:46:28,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:46:28,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 23:46:28,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 23:46:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-22 23:46:28,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-22 23:46:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 23:46:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-22 23:46:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-22 23:46:28,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-22 23:46:28,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-22 23:46:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:28,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:28,328 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-07-22 23:46:28,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:28,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946775132] [2022-07-22 23:46:28,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946775132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:28,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:46:28,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 23:46:28,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234663772] [2022-07-22 23:46:28,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:28,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 23:46:28,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:28,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 23:46:28,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:46:28,332 INFO L87 Difference]: Start difference. First operand 40727 states and 58408 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 23:46:30,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:46:32,973 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:46:43,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:43,889 INFO L93 Difference]: Finished difference Result 86177 states and 125263 transitions. [2022-07-22 23:46:43,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:46:43,893 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 206 [2022-07-22 23:46:43,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:44,133 INFO L225 Difference]: With dead ends: 86177 [2022-07-22 23:46:44,134 INFO L226 Difference]: Without dead ends: 45485 [2022-07-22 23:46:44,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-07-22 23:46:44,433 INFO L413 NwaCegarLoop]: 1921 mSDtfsCounter, 1100 mSDsluCounter, 5481 mSDsCounter, 0 mSdLazyCounter, 4988 mSolverCounterSat, 645 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1203 SdHoareTripleChecker+Valid, 7402 SdHoareTripleChecker+Invalid, 5635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 4988 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:44,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1203 Valid, 7402 Invalid, 5635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 4988 Invalid, 2 Unknown, 0 Unchecked, 13.7s Time] [2022-07-22 23:46:44,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45485 states. [2022-07-22 23:46:46,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45485 to 40736. [2022-07-22 23:46:46,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40736 states, 29361 states have (on average 1.3202207009298048) internal successors, (38763), 30096 states have internal predecessors, (38763), 8654 states have call successors, (8654), 2322 states have call predecessors, (8654), 2720 states have return successors, (10996), 8685 states have call predecessors, (10996), 8648 states have call successors, (10996) [2022-07-22 23:46:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40736 states to 40736 states and 58413 transitions. [2022-07-22 23:46:46,480 INFO L78 Accepts]: Start accepts. Automaton has 40736 states and 58413 transitions. Word has length 206 [2022-07-22 23:46:46,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:46,481 INFO L495 AbstractCegarLoop]: Abstraction has 40736 states and 58413 transitions. [2022-07-22 23:46:46,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (30), 7 states have call predecessors, (30), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 23:46:46,482 INFO L276 IsEmpty]: Start isEmpty. Operand 40736 states and 58413 transitions. [2022-07-22 23:46:46,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-22 23:46:46,496 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:46,497 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:46:46,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 23:46:46,497 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:46,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:46,498 INFO L85 PathProgramCache]: Analyzing trace with hash 2061724804, now seen corresponding path program 1 times [2022-07-22 23:46:46,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:46,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97589970] [2022-07-22 23:46:46,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:46,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:46:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:46:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:46:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:46:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:46:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:46:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:46:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 23:46:47,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:46:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:46:47,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:46:47,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:46:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:46:47,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 23:46:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 23:46:47,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 23:46:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 23:46:47,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-22 23:46:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-22 23:46:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-22 23:46:47,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-22 23:46:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-22 23:46:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:47,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:46:47,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-22 23:46:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:47,182 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-07-22 23:46:47,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:47,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97589970] [2022-07-22 23:46:47,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97589970] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:47,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:46:47,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:46:47,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982888029] [2022-07-22 23:46:47,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:47,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:46:47,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:47,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:46:47,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:46:47,185 INFO L87 Difference]: Start difference. First operand 40736 states and 58413 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 23:46:49,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:47:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:00,611 INFO L93 Difference]: Finished difference Result 107390 states and 154137 transitions. [2022-07-22 23:47:00,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:47:00,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 215 [2022-07-22 23:47:00,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:01,135 INFO L225 Difference]: With dead ends: 107390 [2022-07-22 23:47:01,135 INFO L226 Difference]: Without dead ends: 66701 [2022-07-22 23:47:01,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:47:01,219 INFO L413 NwaCegarLoop]: 2122 mSDtfsCounter, 3584 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 3713 mSolverCounterSat, 2455 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3792 SdHoareTripleChecker+Valid, 5627 SdHoareTripleChecker+Invalid, 6169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2455 IncrementalHoareTripleChecker+Valid, 3713 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:01,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3792 Valid, 5627 Invalid, 6169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2455 Valid, 3713 Invalid, 1 Unknown, 0 Unchecked, 11.1s Time] [2022-07-22 23:47:01,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66701 states. [2022-07-22 23:47:03,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66701 to 61984. [2022-07-22 23:47:03,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61984 states, 44853 states have (on average 1.3191090896929971) internal successors, (59166), 45972 states have internal predecessors, (59166), 12711 states have call successors, (12711), 3777 states have call predecessors, (12711), 4419 states have return successors, (16205), 12722 states have call predecessors, (16205), 12705 states have call successors, (16205) [2022-07-22 23:47:03,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61984 states to 61984 states and 88082 transitions. [2022-07-22 23:47:03,846 INFO L78 Accepts]: Start accepts. Automaton has 61984 states and 88082 transitions. Word has length 215 [2022-07-22 23:47:03,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:03,847 INFO L495 AbstractCegarLoop]: Abstraction has 61984 states and 88082 transitions. [2022-07-22 23:47:03,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 3 states have internal predecessors, (110), 2 states have call successors, (34), 6 states have call predecessors, (34), 1 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 23:47:03,847 INFO L276 IsEmpty]: Start isEmpty. Operand 61984 states and 88082 transitions. [2022-07-22 23:47:03,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-22 23:47:03,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:03,866 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:47:03,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 23:47:03,866 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:03,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:03,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1813652058, now seen corresponding path program 1 times [2022-07-22 23:47:03,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:47:03,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011663373] [2022-07-22 23:47:03,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:03,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:47:04,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:47:04,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:47:04,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:47:04,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:47:04,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:47:04,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:47:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:47:04,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:47:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:47:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 23:47:04,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:47:04,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:47:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:47:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:47:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:47:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:47:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 23:47:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 23:47:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 23:47:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 23:47:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 23:47:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 23:47:04,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-22 23:47:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 23:47:04,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:04,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-22 23:47:04,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 23:47:04,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:04,768 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-07-22 23:47:04,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:47:04,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011663373] [2022-07-22 23:47:04,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011663373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:04,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:04,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 23:47:04,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370862897] [2022-07-22 23:47:04,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:04,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 23:47:04,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:47:04,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 23:47:04,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:47:04,771 INFO L87 Difference]: Start difference. First operand 61984 states and 88082 transitions. Second operand has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-22 23:47:07,300 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:47:20,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:47:23,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:47:29,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:29,497 INFO L93 Difference]: Finished difference Result 148009 states and 221643 transitions. [2022-07-22 23:47:29,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 23:47:29,499 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 214 [2022-07-22 23:47:29,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:30,403 INFO L225 Difference]: With dead ends: 148009 [2022-07-22 23:47:30,403 INFO L226 Difference]: Without dead ends: 107911 [2022-07-22 23:47:30,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=391, Unknown=0, NotChecked=0, Total=506 [2022-07-22 23:47:30,517 INFO L413 NwaCegarLoop]: 3837 mSDtfsCounter, 3439 mSDsluCounter, 18111 mSDsCounter, 0 mSdLazyCounter, 9364 mSolverCounterSat, 2551 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3728 SdHoareTripleChecker+Valid, 21948 SdHoareTripleChecker+Invalid, 11918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2551 IncrementalHoareTripleChecker+Valid, 9364 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:30,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3728 Valid, 21948 Invalid, 11918 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2551 Valid, 9364 Invalid, 3 Unknown, 0 Unchecked, 21.0s Time] [2022-07-22 23:47:30,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107911 states. [2022-07-22 23:47:33,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107911 to 60089. [2022-07-22 23:47:33,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60089 states, 43546 states have (on average 1.3201442153125431) internal successors, (57487), 44583 states have internal predecessors, (57487), 12308 states have call successors, (12308), 3644 states have call predecessors, (12308), 4234 states have return successors, (15520), 12337 states have call predecessors, (15520), 12304 states have call successors, (15520) [2022-07-22 23:47:34,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60089 states to 60089 states and 85315 transitions. [2022-07-22 23:47:34,041 INFO L78 Accepts]: Start accepts. Automaton has 60089 states and 85315 transitions. Word has length 214 [2022-07-22 23:47:34,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:34,042 INFO L495 AbstractCegarLoop]: Abstraction has 60089 states and 85315 transitions. [2022-07-22 23:47:34,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.538461538461538) internal successors, (98), 7 states have internal predecessors, (98), 2 states have call successors, (31), 7 states have call predecessors, (31), 2 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2022-07-22 23:47:34,042 INFO L276 IsEmpty]: Start isEmpty. Operand 60089 states and 85315 transitions. [2022-07-22 23:47:34,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-22 23:47:34,064 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:34,065 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:47:34,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 23:47:34,065 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:34,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:34,066 INFO L85 PathProgramCache]: Analyzing trace with hash -2088411672, now seen corresponding path program 1 times [2022-07-22 23:47:34,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:47:34,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702669628] [2022-07-22 23:47:34,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:34,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:47:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:47:34,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:47:34,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:47:34,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:47:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:47:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-22 23:47:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:47:34,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:47:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:47:34,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-22 23:47:34,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:47:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:47:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:47:34,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:47:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:47:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:47:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 23:47:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 23:47:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 23:47:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-22 23:47:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-22 23:47:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-22 23:47:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-22 23:47:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-22 23:47:34,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-22 23:47:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-22 23:47:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,749 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-07-22 23:47:34,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:47:34,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702669628] [2022-07-22 23:47:34,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702669628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:34,749 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:34,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 23:47:34,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700049360] [2022-07-22 23:47:34,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:34,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 23:47:34,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:47:34,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 23:47:34,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:47:34,752 INFO L87 Difference]: Start difference. First operand 60089 states and 85315 transitions. Second operand has 10 states, 10 states have (on average 9.8) internal successors, (98), 6 states have internal predecessors, (98), 5 states have call successors, (31), 8 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) [2022-07-22 23:47:37,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:47:44,526 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:47:47,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:48:05,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:05,026 INFO L93 Difference]: Finished difference Result 101668 states and 147966 transitions. [2022-07-22 23:48:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 23:48:05,028 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.8) internal successors, (98), 6 states have internal predecessors, (98), 5 states have call successors, (31), 8 states have call predecessors, (31), 3 states have return successors, (29), 4 states have call predecessors, (29), 4 states have call successors, (29) Word has length 214 [2022-07-22 23:48:05,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:05,562 INFO L225 Difference]: With dead ends: 101668 [2022-07-22 23:48:05,562 INFO L226 Difference]: Without dead ends: 101665 [2022-07-22 23:48:05,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-07-22 23:48:05,609 INFO L413 NwaCegarLoop]: 3528 mSDtfsCounter, 7069 mSDsluCounter, 8493 mSDsCounter, 0 mSdLazyCounter, 11614 mSolverCounterSat, 3985 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7517 SdHoareTripleChecker+Valid, 12021 SdHoareTripleChecker+Invalid, 15602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3985 IncrementalHoareTripleChecker+Valid, 11614 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:05,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7517 Valid, 12021 Invalid, 15602 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3985 Valid, 11614 Invalid, 3 Unknown, 0 Unchecked, 26.0s Time] [2022-07-22 23:48:05,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101665 states.