./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 35987657 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-?-3598765 [2022-07-21 11:02:01,445 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:02:01,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:02:01,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:02:01,478 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:02:01,479 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:02:01,482 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:02:01,484 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:02:01,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:02:01,489 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:02:01,490 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:02:01,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:02:01,493 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:02:01,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:02:01,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:02:01,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:02:01,499 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:02:01,500 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:02:01,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:02:01,505 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:02:01,506 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:02:01,507 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:02:01,508 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:02:01,509 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:02:01,510 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:02:01,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:02:01,512 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:02:01,513 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:02:01,513 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:02:01,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:02:01,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:02:01,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:02:01,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:02:01,516 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:02:01,517 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:02:01,518 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:02:01,518 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:02:01,519 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:02:01,519 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:02:01,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:02:01,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:02:01,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:02:01,525 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 11:02:01,544 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:02:01,544 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:02:01,559 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:02:01,559 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:02:01,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:02:01,560 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:02:01,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:02:01,561 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:02:01,561 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:02:01,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:02:01,561 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 11:02:01,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:02:01,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:02:01,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:02:01,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:02:01,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:02:01,569 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:02:01,569 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:02:01,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:02:01,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:02:01,570 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:02:01,570 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:02:01,570 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:02:01,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:02:01,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:02:01,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 11:02:01,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 11:02:01,571 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:02:01,571 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:02:01,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:02:01,572 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73338d683e10a9827a18cf31e1247b64129367b1297cba22c91c243b4552d29d [2022-07-21 11:02:01,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:02:01,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:02:01,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:02:01,903 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:02:01,908 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:02:01,909 INFO L432 ainManager$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 [2022-07-21 11:02:01,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7906f63/70100f7e42bf4c8197f50d99b3116163/FLAG7d23247b9 [2022-07-21 11:02:02,651 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:02:02,654 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 [2022-07-21 11:02:02,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7906f63/70100f7e42bf4c8197f50d99b3116163/FLAG7d23247b9 [2022-07-21 11:02:02,984 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6a7906f63/70100f7e42bf4c8197f50d99b3116163 [2022-07-21 11:02:02,986 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:02:02,987 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:02:02,989 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:02:02,989 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:02:02,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:02:02,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:02:02" (1/1) ... [2022-07-21 11:02:02,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1afb5854 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:02, skipping insertion in model container [2022-07-21 11:02:02,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:02:02" (1/1) ... [2022-07-21 11:02:02,998 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:02:03,079 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:02:03,826 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] [2022-07-21 11:02:04,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:02:04,241 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:02:04,324 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] [2022-07-21 11:02:04,462 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:02:04,561 INFO L208 MainTranslator]: Completed translation [2022-07-21 11:02:04,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:04 WrapperNode [2022-07-21 11:02:04,563 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 11:02:04,564 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 11:02:04,564 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 11:02:04,564 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 11:02:04,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:04" (1/1) ... [2022-07-21 11:02:04,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:04" (1/1) ... [2022-07-21 11:02:04,917 INFO L137 Inliner]: procedures = 245, calls = 3306, calls flagged for inlining = 118, calls inlined = 118, statements flattened = 6447 [2022-07-21 11:02:04,917 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 11:02:04,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 11:02:04,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 11:02:04,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 11:02:04,924 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:04" (1/1) ... [2022-07-21 11:02:04,925 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:04" (1/1) ... [2022-07-21 11:02:04,961 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:04" (1/1) ... [2022-07-21 11:02:04,961 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:04" (1/1) ... [2022-07-21 11:02:05,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:04" (1/1) ... [2022-07-21 11:02:05,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:04" (1/1) ... [2022-07-21 11:02:05,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:04" (1/1) ... [2022-07-21 11:02:05,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 11:02:05,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 11:02:05,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 11:02:05,155 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 11:02:05,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:04" (1/1) ... [2022-07-21 11:02:05,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:02:05,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:02:05,177 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) [2022-07-21 11:02:05,211 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 [2022-07-21 11:02:05,222 INFO L130 BoogieDeclarations]: Found specification of procedure acm_disconnect [2022-07-21 11:02:05,222 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_disconnect [2022-07-21 11:02:05,222 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_tty_hangup [2022-07-21 11:02:05,223 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_tty_hangup [2022-07-21 11:02:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_18 [2022-07-21 11:02:05,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_18 [2022-07-21 11:02:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 11:02:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 11:02:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 11:02:05,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 11:02:05,223 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_destruct [2022-07-21 11:02:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_destruct [2022-07-21 11:02:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2022-07-21 11:02:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2022-07-21 11:02:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-21 11:02:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-21 11:02:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_22 [2022-07-21 11:02:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_22 [2022-07-21 11:02:05,224 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_cleanup [2022-07-21 11:02:05,224 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_cleanup [2022-07-21 11:02:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 11:02:05,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 11:02:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-07-21 11:02:05,225 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-07-21 11:02:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-21 11:02:05,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-21 11:02:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_buffers_free [2022-07-21 11:02:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_buffers_free [2022-07-21 11:02:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 11:02:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 11:02:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 11:02:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 11:02:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-07-21 11:02:05,227 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-07-21 11:02:05,227 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2022-07-21 11:02:05,227 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2022-07-21 11:02:05,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-21 11:02:05,227 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-21 11:02:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 11:02:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 11:02:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-21 11:02:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-21 11:02:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 11:02:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 11:02:05,228 INFO L130 BoogieDeclarations]: Found specification of procedure tty_port_put [2022-07-21 11:02:05,228 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_port_put [2022-07-21 11:02:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_chars_in_buffer [2022-07-21 11:02:05,229 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_chars_in_buffer [2022-07-21 11:02:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure acm_resume [2022-07-21 11:02:05,229 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_resume [2022-07-21 11:02:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 11:02:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-21 11:02:05,229 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_msg [2022-07-21 11:02:05,230 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_msg [2022-07-21 11:02:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2022-07-21 11:02:05,230 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2022-07-21 11:02:05,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 11:02:05,231 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_hangup [2022-07-21 11:02:05,231 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_hangup [2022-07-21 11:02:05,231 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2022-07-21 11:02:05,231 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2022-07-21 11:02:05,231 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-07-21 11:02:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-07-21 11:02:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-07-21 11:02:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2022-07-21 11:02:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2022-07-21 11:02:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 11:02:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 11:02:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-07-21 11:02:05,232 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-07-21 11:02:05,232 INFO L130 BoogieDeclarations]: Found specification of procedure put_tty_driver [2022-07-21 11:02:05,233 INFO L138 BoogieDeclarations]: Found implementation of procedure put_tty_driver [2022-07-21 11:02:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 11:02:05,233 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 11:02:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-07-21 11:02:05,233 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-07-21 11:02:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-21 11:02:05,233 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-21 11:02:05,233 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmget [2022-07-21 11:02:05,233 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmget [2022-07-21 11:02:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure acm_port_shutdown [2022-07-21 11:02:05,234 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_port_shutdown [2022-07-21 11:02:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2022-07-21 11:02:05,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2022-07-21 11:02:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_set_termios [2022-07-21 11:02:05,234 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_set_termios [2022-07-21 11:02:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 11:02:05,234 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 11:02:05,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 11:02:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-21 11:02:05,235 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-21 11:02:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_break_ctl [2022-07-21 11:02:05,235 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_break_ctl [2022-07-21 11:02:05,235 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-21 11:02:05,236 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-21 11:02:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 11:02:05,236 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_7 [2022-07-21 11:02:05,236 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_7 [2022-07-21 11:02:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2022-07-21 11:02:05,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2022-07-21 11:02:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure usb_mark_last_busy [2022-07-21 11:02:05,237 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_mark_last_busy [2022-07-21 11:02:05,237 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 11:02:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure acm_start_wb [2022-07-21 11:02:05,238 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_start_wb [2022-07-21 11:02:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2022-07-21 11:02:05,238 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2022-07-21 11:02:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 11:02:05,238 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 11:02:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-21 11:02:05,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-21 11:02:05,238 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_throttle [2022-07-21 11:02:05,239 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_throttle [2022-07-21 11:02:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure acm_wb_is_avail [2022-07-21 11:02:05,239 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_wb_is_avail [2022-07-21 11:02:05,239 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-21 11:02:05,239 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-21 11:02:05,240 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-21 11:02:05,240 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-21 11:02:05,242 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_write_room [2022-07-21 11:02:05,242 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_write_room [2022-07-21 11:02:05,242 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urb [2022-07-21 11:02:05,242 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urb [2022-07-21 11:02:05,243 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 11:02:05,244 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 11:02:05,244 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 11:02:05,244 INFO L130 BoogieDeclarations]: Found specification of procedure acm_write_done [2022-07-21 11:02:05,279 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_write_done [2022-07-21 11:02:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_ioctl [2022-07-21 11:02:05,284 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_ioctl [2022-07-21 11:02:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure acm_release_minor [2022-07-21 11:02:05,284 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_release_minor [2022-07-21 11:02:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-21 11:02:05,284 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-21 11:02:05,284 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 11:02:05,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 11:02:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure usb_autopm_put_interface_async [2022-07-21 11:02:05,285 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_autopm_put_interface_async [2022-07-21 11:02:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_unthrottle [2022-07-21 11:02:05,285 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_unthrottle [2022-07-21 11:02:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 11:02:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2022-07-21 11:02:05,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2022-07-21 11:02:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 11:02:05,285 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-21 11:02:05,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-21 11:02:05,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 11:02:05,286 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_int_urb_17 [2022-07-21 11:02:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_int_urb_17 [2022-07-21 11:02:05,286 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 11:02:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-21 11:02:05,286 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-21 11:02:05,286 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-21 11:02:05,286 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_coherent [2022-07-21 11:02:05,287 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_coherent [2022-07-21 11:02:05,287 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_buffers_free [2022-07-21 11:02:05,287 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_buffers_free [2022-07-21 11:02:05,287 INFO L130 BoogieDeclarations]: Found specification of procedure acm_ctrl_irq [2022-07-21 11:02:05,287 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_ctrl_irq [2022-07-21 11:02:05,287 INFO L130 BoogieDeclarations]: Found specification of procedure acm_submit_read_urbs [2022-07-21 11:02:05,287 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_submit_read_urbs [2022-07-21 11:02:05,287 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_install [2022-07-21 11:02:05,288 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_install [2022-07-21 11:02:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure stop_data_traffic [2022-07-21 11:02:05,288 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_data_traffic [2022-07-21 11:02:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-21 11:02:05,288 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-21 11:02:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-21 11:02:05,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-21 11:02:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 11:02:05,288 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-21 11:02:05,288 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-21 11:02:05,289 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-07-21 11:02:05,289 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-07-21 11:02:05,289 INFO L130 BoogieDeclarations]: Found specification of procedure acm_tty_tiocmset [2022-07-21 11:02:05,289 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_tty_tiocmset [2022-07-21 11:02:05,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 11:02:05,289 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 11:02:05,289 INFO L130 BoogieDeclarations]: Found specification of procedure tty_unregister_driver [2022-07-21 11:02:05,289 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_unregister_driver [2022-07-21 11:02:05,290 INFO L130 BoogieDeclarations]: Found specification of procedure acm_read_bulk_callback [2022-07-21 11:02:05,290 INFO L138 BoogieDeclarations]: Found implementation of procedure acm_read_bulk_callback [2022-07-21 11:02:05,290 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-07-21 11:02:05,290 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-07-21 11:02:05,979 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 11:02:05,982 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 11:02:06,194 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 11:02:06,628 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-21 11:02:11,771 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 11:02:11,789 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 11:02:11,792 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 11:02:11,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:02:11 BoogieIcfgContainer [2022-07-21 11:02:11,796 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 11:02:11,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 11:02:11,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 11:02:11,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 11:02:11,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:02:02" (1/3) ... [2022-07-21 11:02:11,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57649a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:02:11, skipping insertion in model container [2022-07-21 11:02:11,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:02:04" (2/3) ... [2022-07-21 11:02:11,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57649a37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:02:11, skipping insertion in model container [2022-07-21 11:02:11,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:02:11" (3/3) ... [2022-07-21 11:02:11,802 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--class--cdc-acm.ko-entry_point.cil.out.i [2022-07-21 11:02:11,812 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 11:02:11,812 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 11:02:11,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 11:02:11,907 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@78f3614b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@184d6e53 [2022-07-21 11:02:11,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 11:02:11,915 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) [2022-07-21 11:02:11,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-21 11:02:11,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:11,942 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] [2022-07-21 11:02:11,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:11,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:11,947 INFO L85 PathProgramCache]: Analyzing trace with hash -732994457, now seen corresponding path program 1 times [2022-07-21 11:02:11,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:02:11,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764415421] [2022-07-21 11:02:11,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:11,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:02:12,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:12,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:02:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:02:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:02:12,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:02:12,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:02:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:02:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:02:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:02:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:02:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:02:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:02:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:02:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:02:12,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:02:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-21 11:02:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 11:02:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-21 11:02:12,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:02:12,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764415421] [2022-07-21 11:02:12,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764415421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:12,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:12,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:02:12,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713340107] [2022-07-21 11:02:12,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:12,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:02:12,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:02:12,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:02:12,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:02:12,886 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) [2022-07-21 11:02:16,271 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 [] [2022-07-21 11:02:18,306 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 [] [2022-07-21 11:02:23,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:23,985 INFO L93 Difference]: Finished difference Result 4625 states and 6784 transitions. [2022-07-21 11:02:23,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:02:23,987 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 [2022-07-21 11:02:23,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:24,028 INFO L225 Difference]: With dead ends: 4625 [2022-07-21 11:02:24,028 INFO L226 Difference]: Without dead ends: 3085 [2022-07-21 11:02:24,041 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 [2022-07-21 11:02:24,044 INFO L413 NwaCegarLoop]: 2294 mSDtfsCounter, 3053 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 2323 mSolverCounterSat, 1669 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3308 SdHoareTripleChecker+Valid, 5868 SdHoareTripleChecker+Invalid, 3994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1669 IncrementalHoareTripleChecker+Valid, 2323 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:24,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3308 Valid, 5868 Invalid, 3994 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1669 Valid, 2323 Invalid, 2 Unknown, 0 Unchecked, 10.6s Time] [2022-07-21 11:02:24,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2022-07-21 11:02:24,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 2898. [2022-07-21 11:02:24,199 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) [2022-07-21 11:02:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2898 states to 2898 states and 4081 transitions. [2022-07-21 11:02:24,216 INFO L78 Accepts]: Start accepts. Automaton has 2898 states and 4081 transitions. Word has length 117 [2022-07-21 11:02:24,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:24,217 INFO L495 AbstractCegarLoop]: Abstraction has 2898 states and 4081 transitions. [2022-07-21 11:02:24,217 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) [2022-07-21 11:02:24,218 INFO L276 IsEmpty]: Start isEmpty. Operand 2898 states and 4081 transitions. [2022-07-21 11:02:24,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-21 11:02:24,222 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:24,223 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] [2022-07-21 11:02:24,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 11:02:24,223 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:24,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:24,224 INFO L85 PathProgramCache]: Analyzing trace with hash 432030469, now seen corresponding path program 1 times [2022-07-21 11:02:24,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:02:24,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183868285] [2022-07-21 11:02:24,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:24,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:02:24,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:02:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:02:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:02:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:02:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:02:24,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:02:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:02:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:02:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:02:24,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:02:24,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:02:24,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:02:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:02:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:02:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:02:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:02:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:24,800 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-21 11:02:24,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:02:24,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183868285] [2022-07-21 11:02:24,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183868285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:24,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:24,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:02:24,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556447511] [2022-07-21 11:02:24,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:24,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:02:24,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:02:24,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:02:24,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:02:24,803 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) [2022-07-21 11:02:28,056 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 [] [2022-07-21 11:02:30,092 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 [] [2022-07-21 11:02:36,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:36,995 INFO L93 Difference]: Finished difference Result 9211 states and 13363 transitions. [2022-07-21 11:02:36,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:02:36,996 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 [2022-07-21 11:02:36,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:37,035 INFO L225 Difference]: With dead ends: 9211 [2022-07-21 11:02:37,035 INFO L226 Difference]: Without dead ends: 6346 [2022-07-21 11:02:37,048 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 [2022-07-21 11:02:37,049 INFO L413 NwaCegarLoop]: 2385 mSDtfsCounter, 3212 mSDsluCounter, 4801 mSDsCounter, 0 mSdLazyCounter, 3315 mSolverCounterSat, 1793 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3466 SdHoareTripleChecker+Valid, 7186 SdHoareTripleChecker+Invalid, 5110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1793 IncrementalHoareTripleChecker+Valid, 3315 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:37,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3466 Valid, 7186 Invalid, 5110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1793 Valid, 3315 Invalid, 2 Unknown, 0 Unchecked, 11.8s Time] [2022-07-21 11:02:37,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6346 states. [2022-07-21 11:02:37,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6346 to 5859. [2022-07-21 11:02:37,320 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) [2022-07-21 11:02:37,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5859 states to 5859 states and 8341 transitions. [2022-07-21 11:02:37,350 INFO L78 Accepts]: Start accepts. Automaton has 5859 states and 8341 transitions. Word has length 129 [2022-07-21 11:02:37,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:37,352 INFO L495 AbstractCegarLoop]: Abstraction has 5859 states and 8341 transitions. [2022-07-21 11:02:37,352 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) [2022-07-21 11:02:37,352 INFO L276 IsEmpty]: Start isEmpty. Operand 5859 states and 8341 transitions. [2022-07-21 11:02:37,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-21 11:02:37,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:37,357 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] [2022-07-21 11:02:37,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 11:02:37,357 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:37,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:37,358 INFO L85 PathProgramCache]: Analyzing trace with hash 507342559, now seen corresponding path program 1 times [2022-07-21 11:02:37,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:02:37,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523139608] [2022-07-21 11:02:37,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:37,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:02:37,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:37,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:02:37,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:02:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:02:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:02:37,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:02:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:02:37,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:02:37,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:02:37,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:02:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:02:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:02:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:02:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:02:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:02:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:02:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:02:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-21 11:02:37,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:02:37,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523139608] [2022-07-21 11:02:37,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523139608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:37,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:37,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:02:37,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465160294] [2022-07-21 11:02:37,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:37,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:02:37,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:02:37,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:02:37,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:02:37,896 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) [2022-07-21 11:02:41,062 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 [] [2022-07-21 11:02:43,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:43,785 INFO L93 Difference]: Finished difference Result 6337 states and 9175 transitions. [2022-07-21 11:02:43,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:02:43,787 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 [2022-07-21 11:02:43,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:43,821 INFO L225 Difference]: With dead ends: 6337 [2022-07-21 11:02:43,821 INFO L226 Difference]: Without dead ends: 6334 [2022-07-21 11:02:43,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:02:43,831 INFO L413 NwaCegarLoop]: 1975 mSDtfsCounter, 2782 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 1403 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3033 SdHoareTripleChecker+Valid, 4049 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1403 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:43,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3033 Valid, 4049 Invalid, 2560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1403 Valid, 1156 Invalid, 1 Unknown, 0 Unchecked, 5.7s Time] [2022-07-21 11:02:43,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6334 states. [2022-07-21 11:02:44,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6334 to 5858. [2022-07-21 11:02:44,124 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) [2022-07-21 11:02:44,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5858 states to 5858 states and 8339 transitions. [2022-07-21 11:02:44,141 INFO L78 Accepts]: Start accepts. Automaton has 5858 states and 8339 transitions. Word has length 130 [2022-07-21 11:02:44,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:44,142 INFO L495 AbstractCegarLoop]: Abstraction has 5858 states and 8339 transitions. [2022-07-21 11:02:44,142 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) [2022-07-21 11:02:44,142 INFO L276 IsEmpty]: Start isEmpty. Operand 5858 states and 8339 transitions. [2022-07-21 11:02:44,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-21 11:02:44,145 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:44,145 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] [2022-07-21 11:02:44,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 11:02:44,145 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:44,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:44,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1452945080, now seen corresponding path program 1 times [2022-07-21 11:02:44,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:02:44,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072512104] [2022-07-21 11:02:44,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:44,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:02:44,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:02:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:02:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:02:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:02:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:02:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:02:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:02:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:02:44,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:02:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:02:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:02:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:02:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:02:44,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:02:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:02:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:02:44,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:44,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-21 11:02:44,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:02:44,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072512104] [2022-07-21 11:02:44,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072512104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:44,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:44,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:02:44,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993567262] [2022-07-21 11:02:44,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:44,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:02:44,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:02:44,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:02:44,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:02:44,480 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) [2022-07-21 11:02:47,783 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:02:49,821 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:02:53,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:02:53,585 INFO L93 Difference]: Finished difference Result 6336 states and 9173 transitions. [2022-07-21 11:02:53,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:02:53,586 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 [2022-07-21 11:02:53,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:02:53,612 INFO L225 Difference]: With dead ends: 6336 [2022-07-21 11:02:53,612 INFO L226 Difference]: Without dead ends: 6333 [2022-07-21 11:02:53,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:02:53,616 INFO L413 NwaCegarLoop]: 1965 mSDtfsCounter, 2510 mSDsluCounter, 2987 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 1043 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2761 SdHoareTripleChecker+Valid, 4952 SdHoareTripleChecker+Invalid, 2739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1043 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:02:53,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2761 Valid, 4952 Invalid, 2739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1043 Valid, 1694 Invalid, 2 Unknown, 0 Unchecked, 8.9s Time] [2022-07-21 11:02:53,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6333 states. [2022-07-21 11:02:53,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6333 to 5857. [2022-07-21 11:02:53,856 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) [2022-07-21 11:02:53,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5857 states to 5857 states and 8337 transitions. [2022-07-21 11:02:53,873 INFO L78 Accepts]: Start accepts. Automaton has 5857 states and 8337 transitions. Word has length 131 [2022-07-21 11:02:53,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:02:53,875 INFO L495 AbstractCegarLoop]: Abstraction has 5857 states and 8337 transitions. [2022-07-21 11:02:53,875 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) [2022-07-21 11:02:53,876 INFO L276 IsEmpty]: Start isEmpty. Operand 5857 states and 8337 transitions. [2022-07-21 11:02:53,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-21 11:02:53,879 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:02:53,879 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] [2022-07-21 11:02:53,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 11:02:53,880 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:02:53,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:02:53,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2092314878, now seen corresponding path program 1 times [2022-07-21 11:02:53,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:02:53,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123785877] [2022-07-21 11:02:53,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:02:53,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:02:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:02:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:02:54,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:02:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:02:54,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:02:54,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:02:54,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:02:54,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:02:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:02:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:02:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:02:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:02:54,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:02:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:02:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:02:54,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:02:54,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:02:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:02:54,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:02:54,237 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-21 11:02:54,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:02:54,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123785877] [2022-07-21 11:02:54,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123785877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:02:54,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:02:54,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:02:54,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732500963] [2022-07-21 11:02:54,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:02:54,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:02:54,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:02:54,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:02:54,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:02:54,241 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) [2022-07-21 11:02:58,324 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:03:00,383 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:03:06,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:06,844 INFO L93 Difference]: Finished difference Result 18386 states and 26825 transitions. [2022-07-21 11:03:06,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:03:06,845 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 [2022-07-21 11:03:06,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:06,900 INFO L225 Difference]: With dead ends: 18386 [2022-07-21 11:03:06,901 INFO L226 Difference]: Without dead ends: 12562 [2022-07-21 11:03:06,922 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 [2022-07-21 11:03:06,923 INFO L413 NwaCegarLoop]: 2481 mSDtfsCounter, 3029 mSDsluCounter, 5033 mSDsCounter, 0 mSdLazyCounter, 3273 mSolverCounterSat, 1701 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3285 SdHoareTripleChecker+Valid, 7514 SdHoareTripleChecker+Invalid, 4976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1701 IncrementalHoareTripleChecker+Valid, 3273 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:06,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3285 Valid, 7514 Invalid, 4976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1701 Valid, 3273 Invalid, 2 Unknown, 0 Unchecked, 12.1s Time] [2022-07-21 11:03:06,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12562 states. [2022-07-21 11:03:07,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12562 to 11696. [2022-07-21 11:03:07,459 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) [2022-07-21 11:03:07,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11696 states to 11696 states and 16831 transitions. [2022-07-21 11:03:07,495 INFO L78 Accepts]: Start accepts. Automaton has 11696 states and 16831 transitions. Word has length 132 [2022-07-21 11:03:07,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:07,495 INFO L495 AbstractCegarLoop]: Abstraction has 11696 states and 16831 transitions. [2022-07-21 11:03:07,495 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) [2022-07-21 11:03:07,496 INFO L276 IsEmpty]: Start isEmpty. Operand 11696 states and 16831 transitions. [2022-07-21 11:03:07,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 11:03:07,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:07,499 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] [2022-07-21 11:03:07,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 11:03:07,499 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:07,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:07,500 INFO L85 PathProgramCache]: Analyzing trace with hash -437937269, now seen corresponding path program 1 times [2022-07-21 11:03:07,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:07,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701317502] [2022-07-21 11:03:07,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:07,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:07,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:07,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:03:07,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:03:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:03:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:03:07,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:03:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:03:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:03:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:03:07,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:03:07,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:03:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:03:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:03:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:03:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:03:07,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:03:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:07,791 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-21 11:03:07,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:07,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701317502] [2022-07-21 11:03:07,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701317502] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:07,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:07,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:03:07,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267039662] [2022-07-21 11:03:07,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:07,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:03:07,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:07,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:03:07,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:03:07,793 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) [2022-07-21 11:03:10,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:03:13,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:03:15,615 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 [] [2022-07-21 11:03:19,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:19,028 INFO L93 Difference]: Finished difference Result 12542 states and 18323 transitions. [2022-07-21 11:03:19,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 11:03:19,028 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 [2022-07-21 11:03:19,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:19,094 INFO L225 Difference]: With dead ends: 12542 [2022-07-21 11:03:19,094 INFO L226 Difference]: Without dead ends: 12521 [2022-07-21 11:03:19,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:03:19,104 INFO L413 NwaCegarLoop]: 1974 mSDtfsCounter, 2497 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 1036 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2744 SdHoareTripleChecker+Valid, 4962 SdHoareTripleChecker+Invalid, 2739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1036 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:19,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2744 Valid, 4962 Invalid, 2739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1036 Valid, 1700 Invalid, 3 Unknown, 0 Unchecked, 10.9s Time] [2022-07-21 11:03:19,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12521 states. [2022-07-21 11:03:19,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12521 to 11677. [2022-07-21 11:03:19,546 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) [2022-07-21 11:03:19,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11677 states to 11677 states and 16807 transitions. [2022-07-21 11:03:19,576 INFO L78 Accepts]: Start accepts. Automaton has 11677 states and 16807 transitions. Word has length 133 [2022-07-21 11:03:19,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:19,576 INFO L495 AbstractCegarLoop]: Abstraction has 11677 states and 16807 transitions. [2022-07-21 11:03:19,576 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) [2022-07-21 11:03:19,577 INFO L276 IsEmpty]: Start isEmpty. Operand 11677 states and 16807 transitions. [2022-07-21 11:03:19,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-21 11:03:19,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:19,582 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] [2022-07-21 11:03:19,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 11:03:19,582 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:19,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:19,583 INFO L85 PathProgramCache]: Analyzing trace with hash 419378913, now seen corresponding path program 1 times [2022-07-21 11:03:19,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:19,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309354] [2022-07-21 11:03:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:19,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:19,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:03:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:03:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:03:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:03:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:03:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:03:19,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:03:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:03:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:03:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:03:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:03:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:03:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:03:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:03:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 11:03:19,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 11:03:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-21 11:03:19,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-21 11:03:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:19,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:19,904 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2022-07-21 11:03:19,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:19,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309354] [2022-07-21 11:03:19,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309354] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:19,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:19,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:03:19,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10293039] [2022-07-21 11:03:19,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:19,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:03:19,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:19,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:03:19,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:03:19,907 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) [2022-07-21 11:03:24,054 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 [] [2022-07-21 11:03:26,090 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:03:28,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:03:37,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:37,972 INFO L93 Difference]: Finished difference Result 37229 states and 54433 transitions. [2022-07-21 11:03:37,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 11:03:37,987 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 [2022-07-21 11:03:37,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:38,175 INFO L225 Difference]: With dead ends: 37229 [2022-07-21 11:03:38,191 INFO L226 Difference]: Without dead ends: 25585 [2022-07-21 11:03:38,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:03:38,248 INFO L413 NwaCegarLoop]: 2091 mSDtfsCounter, 3545 mSDsluCounter, 4131 mSDsCounter, 0 mSdLazyCounter, 5252 mSolverCounterSat, 1529 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3875 SdHoareTripleChecker+Valid, 6222 SdHoareTripleChecker+Invalid, 6784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1529 IncrementalHoareTripleChecker+Valid, 5252 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:38,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3875 Valid, 6222 Invalid, 6784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1529 Valid, 5252 Invalid, 3 Unknown, 0 Unchecked, 17.1s Time] [2022-07-21 11:03:38,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25585 states. [2022-07-21 11:03:39,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25585 to 23267. [2022-07-21 11:03:39,144 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) [2022-07-21 11:03:39,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23267 states to 23267 states and 33614 transitions. [2022-07-21 11:03:39,225 INFO L78 Accepts]: Start accepts. Automaton has 23267 states and 33614 transitions. Word has length 154 [2022-07-21 11:03:39,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:39,225 INFO L495 AbstractCegarLoop]: Abstraction has 23267 states and 33614 transitions. [2022-07-21 11:03:39,226 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) [2022-07-21 11:03:39,226 INFO L276 IsEmpty]: Start isEmpty. Operand 23267 states and 33614 transitions. [2022-07-21 11:03:39,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-21 11:03:39,238 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:39,238 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] [2022-07-21 11:03:39,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 11:03:39,239 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:39,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:39,239 INFO L85 PathProgramCache]: Analyzing trace with hash -476457825, now seen corresponding path program 1 times [2022-07-21 11:03:39,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:39,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544495166] [2022-07-21 11:03:39,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:39,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:03:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:03:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:03:39,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:03:39,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:03:39,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:03:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:03:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:03:39,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:03:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:03:39,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:03:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:03:39,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:03:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-21 11:03:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-21 11:03:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 11:03:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-21 11:03:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-21 11:03:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-21 11:03:39,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:39,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 11:03:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:03:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-21 11:03:39,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:39,592 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2022-07-21 11:03:39,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:39,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544495166] [2022-07-21 11:03:39,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544495166] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:39,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:39,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:03:39,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382120651] [2022-07-21 11:03:39,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:39,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:03:39,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:39,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:03:39,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:03:39,595 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) [2022-07-21 11:03:41,963 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:03:46,394 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:03:56,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:03:56,570 INFO L93 Difference]: Finished difference Result 66836 states and 96836 transitions. [2022-07-21 11:03:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 11:03:56,571 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 [2022-07-21 11:03:56,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:03:56,763 INFO L225 Difference]: With dead ends: 66836 [2022-07-21 11:03:56,764 INFO L226 Difference]: Without dead ends: 43612 [2022-07-21 11:03:56,834 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 [2022-07-21 11:03:56,835 INFO L413 NwaCegarLoop]: 2358 mSDtfsCounter, 2982 mSDsluCounter, 4486 mSDsCounter, 0 mSdLazyCounter, 5259 mSolverCounterSat, 1781 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3261 SdHoareTripleChecker+Valid, 6844 SdHoareTripleChecker+Invalid, 7042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1781 IncrementalHoareTripleChecker+Valid, 5259 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:03:56,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3261 Valid, 6844 Invalid, 7042 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1781 Valid, 5259 Invalid, 2 Unknown, 0 Unchecked, 15.2s Time] [2022-07-21 11:03:56,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43612 states. [2022-07-21 11:03:58,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43612 to 40727. [2022-07-21 11:03:58,337 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) [2022-07-21 11:03:58,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40727 states to 40727 states and 58408 transitions. [2022-07-21 11:03:58,462 INFO L78 Accepts]: Start accepts. Automaton has 40727 states and 58408 transitions. Word has length 212 [2022-07-21 11:03:58,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:03:58,462 INFO L495 AbstractCegarLoop]: Abstraction has 40727 states and 58408 transitions. [2022-07-21 11:03:58,463 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) [2022-07-21 11:03:58,463 INFO L276 IsEmpty]: Start isEmpty. Operand 40727 states and 58408 transitions. [2022-07-21 11:03:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-21 11:03:58,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:03:58,477 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] [2022-07-21 11:03:58,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 11:03:58,477 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:03:58,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:03:58,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1742817952, now seen corresponding path program 1 times [2022-07-21 11:03:58,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:03:58,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331765129] [2022-07-21 11:03:58,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:03:58,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:03:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:03:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:03:58,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:03:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:03:58,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:03:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:03:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:03:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:03:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:03:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:03:58,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:03:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:03:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:03:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:03:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:03:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:03:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:03:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 11:03:58,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 11:03:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-21 11:03:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-21 11:03:58,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-21 11:03:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-21 11:03:58,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:58,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-21 11:03:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-21 11:03:58,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:03:58,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:03:58,812 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-07-21 11:03:58,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:03:58,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331765129] [2022-07-21 11:03:58,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331765129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:03:58,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:03:58,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 11:03:58,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211963521] [2022-07-21 11:03:58,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:03:58,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 11:03:58,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:03:58,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 11:03:58,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:03:58,814 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) [2022-07-21 11:04:01,186 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:04:03,230 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:04:12,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:04:12,711 INFO L93 Difference]: Finished difference Result 86177 states and 125263 transitions. [2022-07-21 11:04:12,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 11:04:12,713 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 [2022-07-21 11:04:12,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:04:12,864 INFO L225 Difference]: With dead ends: 86177 [2022-07-21 11:04:12,864 INFO L226 Difference]: Without dead ends: 45485 [2022-07-21 11:04:12,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2022-07-21 11:04:12,977 INFO L413 NwaCegarLoop]: 1921 mSDtfsCounter, 1083 mSDsluCounter, 5509 mSDsCounter, 0 mSdLazyCounter, 5010 mSolverCounterSat, 633 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 7430 SdHoareTripleChecker+Invalid, 5645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 633 IncrementalHoareTripleChecker+Valid, 5010 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-07-21 11:04:12,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 7430 Invalid, 5645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [633 Valid, 5010 Invalid, 2 Unknown, 0 Unchecked, 12.4s Time] [2022-07-21 11:04:13,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45485 states. [2022-07-21 11:04:14,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45485 to 40736. [2022-07-21 11:04:14,653 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) [2022-07-21 11:04:14,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40736 states to 40736 states and 58413 transitions. [2022-07-21 11:04:14,797 INFO L78 Accepts]: Start accepts. Automaton has 40736 states and 58413 transitions. Word has length 206 [2022-07-21 11:04:14,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:04:14,800 INFO L495 AbstractCegarLoop]: Abstraction has 40736 states and 58413 transitions. [2022-07-21 11:04:14,801 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) [2022-07-21 11:04:14,801 INFO L276 IsEmpty]: Start isEmpty. Operand 40736 states and 58413 transitions. [2022-07-21 11:04:14,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-21 11:04:14,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:04:14,814 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:04:14,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 11:04:14,815 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:04:14,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:04:14,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1772476026, now seen corresponding path program 1 times [2022-07-21 11:04:14,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:04:14,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703824588] [2022-07-21 11:04:14,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:14,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:04:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:15,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:04:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:04:15,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:04:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:04:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:04:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:04:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:04:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:04:15,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:04:15,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:04:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:04:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:04:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:04:15,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:04:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 11:04:15,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-21 11:04:15,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 11:04:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 11:04:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 11:04:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-21 11:04:15,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-21 11:04:15,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-21 11:04:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-21 11:04:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-21 11:04:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:15,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-21 11:04:15,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:04:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-21 11:04:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-07-21 11:04:15,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:04:15,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703824588] [2022-07-21 11:04:15,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703824588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:04:15,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:04:15,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:04:15,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585104794] [2022-07-21 11:04:15,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:04:15,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:04:15,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:04:15,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:04:15,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:04:15,177 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, (36), 6 states have call predecessors, (36), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-21 11:04:17,400 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:04:19,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:04:28,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:04:28,673 INFO L93 Difference]: Finished difference Result 107390 states and 154137 transitions. [2022-07-21 11:04:28,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 11:04:28,675 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, (36), 6 states have call predecessors, (36), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 224 [2022-07-21 11:04:28,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:04:28,957 INFO L225 Difference]: With dead ends: 107390 [2022-07-21 11:04:28,958 INFO L226 Difference]: Without dead ends: 66701 [2022-07-21 11:04:29,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:04:29,083 INFO L413 NwaCegarLoop]: 2135 mSDtfsCounter, 3565 mSDsluCounter, 3505 mSDsCounter, 0 mSdLazyCounter, 3727 mSolverCounterSat, 2449 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3774 SdHoareTripleChecker+Valid, 5640 SdHoareTripleChecker+Invalid, 6178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2449 IncrementalHoareTripleChecker+Valid, 3727 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:04:29,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3774 Valid, 5640 Invalid, 6178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2449 Valid, 3727 Invalid, 2 Unknown, 0 Unchecked, 11.3s Time] [2022-07-21 11:04:29,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66701 states. [2022-07-21 11:04:31,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66701 to 61984. [2022-07-21 11:04:31,271 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) [2022-07-21 11:04:31,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61984 states to 61984 states and 88082 transitions. [2022-07-21 11:04:31,492 INFO L78 Accepts]: Start accepts. Automaton has 61984 states and 88082 transitions. Word has length 224 [2022-07-21 11:04:31,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:04:31,492 INFO L495 AbstractCegarLoop]: Abstraction has 61984 states and 88082 transitions. [2022-07-21 11:04:31,493 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, (36), 6 states have call predecessors, (36), 1 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-21 11:04:31,493 INFO L276 IsEmpty]: Start isEmpty. Operand 61984 states and 88082 transitions. [2022-07-21 11:04:31,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-21 11:04:31,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:04:31,509 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] [2022-07-21 11:04:31,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 11:04:31,510 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:04:31,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:04:31,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1813652058, now seen corresponding path program 1 times [2022-07-21 11:04:31,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:04:31,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371515409] [2022-07-21 11:04:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:04:31,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:04:31,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:04:31,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:04:31,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:04:31,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:04:31,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:04:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:04:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:04:31,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:04:31,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:04:31,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:04:31,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:04:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:04:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:04:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:04:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:04:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:04:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:04:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:31,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:04:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 11:04:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-21 11:04:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 11:04:31,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-21 11:04:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-21 11:04:31,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 11:04:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:31,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 11:04:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 11:04:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:04:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:04:32,062 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-07-21 11:04:32,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:04:32,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371515409] [2022-07-21 11:04:32,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371515409] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:04:32,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:04:32,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 11:04:32,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163202149] [2022-07-21 11:04:32,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:04:32,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 11:04:32,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:04:32,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 11:04:32,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:04:32,064 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) [2022-07-21 11:04:34,644 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:04:38,635 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:04:47,913 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:04:50,757 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:04:56,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:04:56,602 INFO L93 Difference]: Finished difference Result 148009 states and 221643 transitions. [2022-07-21 11:04:56,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 11:04:56,603 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 [2022-07-21 11:04:56,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:04:57,263 INFO L225 Difference]: With dead ends: 148009 [2022-07-21 11:04:57,264 INFO L226 Difference]: Without dead ends: 107911 [2022-07-21 11:04:57,364 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 [2022-07-21 11:04:57,371 INFO L413 NwaCegarLoop]: 3839 mSDtfsCounter, 2922 mSDsluCounter, 20957 mSDsCounter, 0 mSdLazyCounter, 10683 mSolverCounterSat, 1770 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3211 SdHoareTripleChecker+Valid, 24796 SdHoareTripleChecker+Invalid, 12457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1770 IncrementalHoareTripleChecker+Valid, 10683 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:04:57,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3211 Valid, 24796 Invalid, 12457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1770 Valid, 10683 Invalid, 4 Unknown, 0 Unchecked, 21.2s Time] [2022-07-21 11:04:57,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107911 states. [2022-07-21 11:05:00,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107911 to 60089. [2022-07-21 11:05:00,511 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) [2022-07-21 11:05:00,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60089 states to 60089 states and 85315 transitions. [2022-07-21 11:05:00,911 INFO L78 Accepts]: Start accepts. Automaton has 60089 states and 85315 transitions. Word has length 214 [2022-07-21 11:05:00,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:05:00,912 INFO L495 AbstractCegarLoop]: Abstraction has 60089 states and 85315 transitions. [2022-07-21 11:05:00,912 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) [2022-07-21 11:05:00,912 INFO L276 IsEmpty]: Start isEmpty. Operand 60089 states and 85315 transitions. [2022-07-21 11:05:00,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-21 11:05:00,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:05:00,957 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] [2022-07-21 11:05:00,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 11:05:00,958 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:05:00,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:05:00,971 INFO L85 PathProgramCache]: Analyzing trace with hash -2088411672, now seen corresponding path program 1 times [2022-07-21 11:05:00,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:05:00,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291214798] [2022-07-21 11:05:00,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:05:00,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:05:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:05:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:05:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:05:01,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:05:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:05:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:05:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:05:01,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:05:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:05:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:05:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:05:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:05:01,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:05:01,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:05:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:05:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:05:01,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:05:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:01,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:05:01,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 11:05:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-21 11:05:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 11:05:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-21 11:05:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-21 11:05:01,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 11:05:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:01,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 11:05:01,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-21 11:05:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:01,484 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-07-21 11:05:01,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:05:01,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291214798] [2022-07-21 11:05:01,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291214798] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:05:01,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:05:01,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 11:05:01,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799606989] [2022-07-21 11:05:01,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:05:01,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 11:05:01,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:05:01,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 11:05:01,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:05:01,518 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) [2022-07-21 11:05:03,861 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:05:07,576 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:05:14,945 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 [] [2022-07-21 11:05:35,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:05:35,343 INFO L93 Difference]: Finished difference Result 101668 states and 147966 transitions. [2022-07-21 11:05:35,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 11:05:35,345 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 [2022-07-21 11:05:35,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:05:35,980 INFO L225 Difference]: With dead ends: 101668 [2022-07-21 11:05:35,980 INFO L226 Difference]: Without dead ends: 101665 [2022-07-21 11:05:36,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-07-21 11:05:36,020 INFO L413 NwaCegarLoop]: 3528 mSDtfsCounter, 6226 mSDsluCounter, 9792 mSDsCounter, 0 mSdLazyCounter, 13520 mSolverCounterSat, 2868 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6674 SdHoareTripleChecker+Valid, 13320 SdHoareTripleChecker+Invalid, 16391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2868 IncrementalHoareTripleChecker+Valid, 13520 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:05:36,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6674 Valid, 13320 Invalid, 16391 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2868 Valid, 13520 Invalid, 3 Unknown, 0 Unchecked, 29.6s Time] [2022-07-21 11:05:36,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101665 states. [2022-07-21 11:05:39,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101665 to 90303. [2022-07-21 11:05:39,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90303 states, 65458 states have (on average 1.3208011243851019) internal successors, (86457), 67019 states have internal predecessors, (86457), 18542 states have call successors, (18542), 5540 states have call predecessors, (18542), 6302 states have return successors, (23470), 18443 states have call predecessors, (23470), 18538 states have call successors, (23470) [2022-07-21 11:05:40,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90303 states to 90303 states and 128469 transitions. [2022-07-21 11:05:40,469 INFO L78 Accepts]: Start accepts. Automaton has 90303 states and 128469 transitions. Word has length 214 [2022-07-21 11:05:40,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:05:40,469 INFO L495 AbstractCegarLoop]: Abstraction has 90303 states and 128469 transitions. [2022-07-21 11:05:40,470 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-07-21 11:05:40,470 INFO L276 IsEmpty]: Start isEmpty. Operand 90303 states and 128469 transitions. [2022-07-21 11:05:40,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-07-21 11:05:40,511 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:05:40,511 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 3, 3, 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] [2022-07-21 11:05:40,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 11:05:40,511 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:05:40,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:05:40,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1754366035, now seen corresponding path program 1 times [2022-07-21 11:05:40,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:05:40,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727313793] [2022-07-21 11:05:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:05:40,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:05:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:05:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:05:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:05:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:05:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:05:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:05:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:05:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:05:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:05:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:05:40,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:05:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:05:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:05:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:05:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:05:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:05:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:05:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:05:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 11:05:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-21 11:05:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 11:05:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-21 11:05:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-21 11:05:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-21 11:05:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-21 11:05:40,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:05:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 11:05:40,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-21 11:05:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:05:40,966 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2022-07-21 11:05:40,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:05:40,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727313793] [2022-07-21 11:05:40,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727313793] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:05:40,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:05:40,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 11:05:40,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099232276] [2022-07-21 11:05:40,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:05:40,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 11:05:40,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:05:40,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 11:05:40,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:05:40,968 INFO L87 Difference]: Start difference. First operand 90303 states and 128469 transitions. Second operand has 8 states, 8 states have (on average 13.375) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (33), 7 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-21 11:05:43,224 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 [] [2022-07-21 11:05:46,601 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:05:48,894 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-21 11:06:04,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:06:04,698 INFO L93 Difference]: Finished difference Result 236345 states and 339461 transitions. [2022-07-21 11:06:04,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 11:06:04,700 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (33), 7 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 222 [2022-07-21 11:06:04,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:06:05,612 INFO L225 Difference]: With dead ends: 236345 [2022-07-21 11:06:05,612 INFO L226 Difference]: Without dead ends: 146101 [2022-07-21 11:06:05,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-07-21 11:06:05,807 INFO L413 NwaCegarLoop]: 2868 mSDtfsCounter, 4123 mSDsluCounter, 6021 mSDsCounter, 0 mSdLazyCounter, 5447 mSolverCounterSat, 2603 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4413 SdHoareTripleChecker+Valid, 8889 SdHoareTripleChecker+Invalid, 8053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2603 IncrementalHoareTripleChecker+Valid, 5447 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:06:05,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4413 Valid, 8889 Invalid, 8053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2603 Valid, 5447 Invalid, 3 Unknown, 0 Unchecked, 17.3s Time] [2022-07-21 11:06:05,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146101 states. [2022-07-21 11:06:11,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146101 to 132865. [2022-07-21 11:06:11,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132865 states, 96472 states have (on average 1.3209946927605938) internal successors, (127439), 98775 states have internal predecessors, (127439), 27110 states have call successors, (27110), 8154 states have call predecessors, (27110), 9282 states have return successors, (34338), 26973 states have call predecessors, (34338), 27106 states have call successors, (34338) [2022-07-21 11:06:12,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132865 states to 132865 states and 188887 transitions. [2022-07-21 11:06:12,575 INFO L78 Accepts]: Start accepts. Automaton has 132865 states and 188887 transitions. Word has length 222 [2022-07-21 11:06:12,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:06:12,576 INFO L495 AbstractCegarLoop]: Abstraction has 132865 states and 188887 transitions. [2022-07-21 11:06:12,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.375) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (33), 7 states have call predecessors, (33), 1 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-21 11:06:12,576 INFO L276 IsEmpty]: Start isEmpty. Operand 132865 states and 188887 transitions. [2022-07-21 11:06:12,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2022-07-21 11:06:12,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:06:12,597 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 3, 3, 3, 3, 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, 1] [2022-07-21 11:06:12,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 11:06:12,598 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:06:12,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:06:12,598 INFO L85 PathProgramCache]: Analyzing trace with hash 366470254, now seen corresponding path program 1 times [2022-07-21 11:06:12,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:06:12,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129426211] [2022-07-21 11:06:12,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:06:12,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:06:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:06:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:06:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:06:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:06:13,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:06:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:06:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:06:13,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:06:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:06:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 11:06:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 11:06:13,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:06:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-21 11:06:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 11:06:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 11:06:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:06:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:06:13,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:06:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-21 11:06:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-21 11:06:13,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-21 11:06:13,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 11:06:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-21 11:06:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-21 11:06:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-21 11:06:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:06:13,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-21 11:06:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-21 11:06:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-21 11:06:13,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:13,297 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-07-21 11:06:13,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:06:13,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129426211] [2022-07-21 11:06:13,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129426211] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:06:13,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976783646] [2022-07-21 11:06:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:06:13,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:06:13,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:06:13,300 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:06:13,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 11:06:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:06:14,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 6089 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 11:06:14,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:06:14,704 INFO L134 CoverageAnalysis]: Checked inductivity of 567 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2022-07-21 11:06:14,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:06:14,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976783646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:06:14,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:06:14,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2022-07-21 11:06:14,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702775736] [2022-07-21 11:06:14,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:06:14,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:06:14,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:06:14,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:06:14,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:06:14,707 INFO L87 Difference]: Start difference. First operand 132865 states and 188887 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 4 states have internal predecessors, (113), 3 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29)