./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--bluetooth--btmrvl_sdio.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--bluetooth--btmrvl_sdio.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 b0eb7f7856f720fe7809d2ae074eca6d5f8f52698134da2a3e5898955e84f487 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:15:54,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:15:54,551 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:15:54,579 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:15:54,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:15:54,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:15:54,591 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:15:54,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:15:54,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:15:54,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:15:54,604 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:15:54,605 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:15:54,606 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:15:54,607 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:15:54,608 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:15:54,610 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:15:54,615 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:15:54,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:15:54,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:15:54,621 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:15:54,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:15:54,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:15:54,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:15:54,626 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:15:54,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:15:54,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:15:54,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:15:54,631 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:15:54,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:15:54,632 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:15:54,632 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:15:54,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:15:54,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:15:54,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:15:54,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:15:54,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:15:54,636 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:15:54,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:15:54,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:15:54,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:15:54,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:15:54,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:15:54,663 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:15:54,664 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:15:54,664 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:15:54,664 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:15:54,665 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:15:54,665 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:15:54,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:15:54,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:15:54,666 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:15:54,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:15:54,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:15:54,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:15:54,667 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:15:54,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:15:54,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:15:54,668 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:15:54,668 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:15:54,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:15:54,668 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:15:54,669 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:15:54,669 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:15:54,669 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:15:54,669 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:15:54,669 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:15:54,669 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:15:54,669 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:15:54,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:15:54,670 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:15:54,670 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:15:54,670 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:15:54,670 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:15:54,670 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0eb7f7856f720fe7809d2ae074eca6d5f8f52698134da2a3e5898955e84f487 [2021-12-21 16:15:54,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:15:54,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:15:54,892 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:15:54,893 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:15:54,894 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:15:54,894 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--bluetooth--btmrvl_sdio.ko-entry_point.cil.out.i [2021-12-21 16:15:54,959 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19db6c61e/b3b996f63d66436f925e5e0d14a82525/FLAGa9369ed5e [2021-12-21 16:15:55,565 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:15:55,566 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--bluetooth--btmrvl_sdio.ko-entry_point.cil.out.i [2021-12-21 16:15:55,597 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19db6c61e/b3b996f63d66436f925e5e0d14a82525/FLAGa9369ed5e [2021-12-21 16:15:55,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19db6c61e/b3b996f63d66436f925e5e0d14a82525 [2021-12-21 16:15:55,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:15:55,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:15:55,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:15:55,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:15:55,979 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:15:55,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:15:55" (1/1) ... [2021-12-21 16:15:55,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9b30a8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:15:55, skipping insertion in model container [2021-12-21 16:15:55,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:15:55" (1/1) ... [2021-12-21 16:15:55,985 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:15:56,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:15:56,436 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5840] [2021-12-21 16:15:56,437 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5841-5842] [2021-12-21 16:15:56,542 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--bluetooth--btmrvl_sdio.ko-entry_point.cil.out.i[172993,173006] [2021-12-21 16:15:56,994 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:15:57,011 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:15:57,119 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [5840] [2021-12-21 16:15:57,120 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [5841-5842] [2021-12-21 16:15:57,127 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--bluetooth--btmrvl_sdio.ko-entry_point.cil.out.i[172993,173006] [2021-12-21 16:15:57,243 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:15:57,282 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:15:57,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:15:57 WrapperNode [2021-12-21 16:15:57,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:15:57,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:15:57,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:15:57,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:15:57,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:15:57" (1/1) ... [2021-12-21 16:15:57,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:15:57" (1/1) ... [2021-12-21 16:15:57,440 INFO L137 Inliner]: procedures = 156, calls = 1213, calls flagged for inlining = 65, calls inlined = 59, statements flattened = 2699 [2021-12-21 16:15:57,440 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:15:57,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:15:57,441 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:15:57,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:15:57,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:15:57" (1/1) ... [2021-12-21 16:15:57,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:15:57" (1/1) ... [2021-12-21 16:15:57,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:15:57" (1/1) ... [2021-12-21 16:15:57,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:15:57" (1/1) ... [2021-12-21 16:15:57,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:15:57" (1/1) ... [2021-12-21 16:15:57,552 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:15:57" (1/1) ... [2021-12-21 16:15:57,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:15:57" (1/1) ... [2021-12-21 16:15:57,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:15:57,584 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:15:57,584 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:15:57,584 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:15:57,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:15:57" (1/1) ... [2021-12-21 16:15:57,605 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:15:57,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:15:57,631 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 16:15:57,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 16:15:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-21 16:15:57,661 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-21 16:15:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 16:15:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_release_host [2021-12-21 16:15:57,662 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_release_host [2021-12-21 16:15:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 16:15:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 16:15:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure btmrvl_sdio_unregister_dev [2021-12-21 16:15:57,662 INFO L138 BoogieDeclarations]: Found implementation of procedure btmrvl_sdio_unregister_dev [2021-12-21 16:15:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:15:57,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:15:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:15:57,662 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_get_host_pm_caps [2021-12-21 16:15:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_get_host_pm_caps [2021-12-21 16:15:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 16:15:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 16:15:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-21 16:15:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-21 16:15:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:15:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:15:57,663 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-21 16:15:57,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-21 16:15:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:15:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:15:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:15:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:15:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:15:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-12-21 16:15:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-12-21 16:15:57,664 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:15:57,664 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:15:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure btmrvl_sdio_disable_host_int [2021-12-21 16:15:57,665 INFO L138 BoogieDeclarations]: Found implementation of procedure btmrvl_sdio_disable_host_int [2021-12-21 16:15:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:15:57,665 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:15:57,665 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_writesb [2021-12-21 16:15:57,665 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_writesb [2021-12-21 16:15:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_writeb [2021-12-21 16:15:57,666 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_writeb [2021-12-21 16:15:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:15:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:15:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_release_irq [2021-12-21 16:15:57,666 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_release_irq [2021-12-21 16:15:57,666 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_disable_func [2021-12-21 16:15:57,666 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_disable_func [2021-12-21 16:15:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-21 16:15:57,667 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-21 16:15:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 16:15:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:15:57,667 INFO L130 BoogieDeclarations]: Found specification of procedure btmrvl_sdio_resume [2021-12-21 16:15:57,668 INFO L138 BoogieDeclarations]: Found implementation of procedure btmrvl_sdio_resume [2021-12-21 16:15:57,668 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_claim_host [2021-12-21 16:15:57,668 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_claim_host [2021-12-21 16:15:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-21 16:15:57,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-21 16:15:57,669 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:15:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-21 16:15:57,670 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-21 16:15:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure hci_recv_frame [2021-12-21 16:15:57,670 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_recv_frame [2021-12-21 16:15:57,670 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_readsb [2021-12-21 16:15:57,670 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_readsb [2021-12-21 16:15:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:15:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-21 16:15:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-21 16:15:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:15:57,671 INFO L130 BoogieDeclarations]: Found specification of procedure btmrvl_sdio_verify_fw_download [2021-12-21 16:15:57,671 INFO L138 BoogieDeclarations]: Found implementation of procedure btmrvl_sdio_verify_fw_download [2021-12-21 16:15:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-12-21 16:15:57,672 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-12-21 16:15:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure btmrvl_sdio_suspend [2021-12-21 16:15:57,672 INFO L138 BoogieDeclarations]: Found implementation of procedure btmrvl_sdio_suspend [2021-12-21 16:15:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-21 16:15:57,672 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-21 16:15:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-21 16:15:57,672 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-21 16:15:57,672 INFO L130 BoogieDeclarations]: Found specification of procedure request_firmware [2021-12-21 16:15:57,673 INFO L138 BoogieDeclarations]: Found implementation of procedure request_firmware [2021-12-21 16:15:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-12-21 16:15:57,673 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-12-21 16:15:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure btmrvl_sdio_poll_card_status [2021-12-21 16:15:57,673 INFO L138 BoogieDeclarations]: Found implementation of procedure btmrvl_sdio_poll_card_status [2021-12-21 16:15:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure release_firmware [2021-12-21 16:15:57,673 INFO L138 BoogieDeclarations]: Found implementation of procedure release_firmware [2021-12-21 16:15:57,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:15:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 16:15:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-12-21 16:15:57,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-12-21 16:15:57,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:15:57,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:15:57,675 INFO L130 BoogieDeclarations]: Found specification of procedure sdio_readb [2021-12-21 16:15:57,675 INFO L138 BoogieDeclarations]: Found implementation of procedure sdio_readb [2021-12-21 16:15:58,095 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:15:58,096 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:15:58,432 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:15:59,695 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:15:59,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:15:59,704 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:15:59,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:15:59 BoogieIcfgContainer [2021-12-21 16:15:59,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:15:59,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:15:59,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:15:59,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:15:59,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:15:55" (1/3) ... [2021-12-21 16:15:59,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3565e9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:15:59, skipping insertion in model container [2021-12-21 16:15:59,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:15:57" (2/3) ... [2021-12-21 16:15:59,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3565e9f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:15:59, skipping insertion in model container [2021-12-21 16:15:59,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:15:59" (3/3) ... [2021-12-21 16:15:59,713 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--bluetooth--btmrvl_sdio.ko-entry_point.cil.out.i [2021-12-21 16:15:59,717 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:15:59,717 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:15:59,755 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:15:59,761 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 16:15:59,761 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:15:59,785 INFO L276 IsEmpty]: Start isEmpty. Operand has 668 states, 499 states have (on average 1.3727454909819639) internal successors, (685), 507 states have internal predecessors, (685), 130 states have call successors, (130), 38 states have call predecessors, (130), 37 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) [2021-12-21 16:15:59,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-21 16:15:59,801 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:15:59,802 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:15:59,803 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:15:59,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:15:59,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1756024584, now seen corresponding path program 1 times [2021-12-21 16:15:59,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:15:59,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405101772] [2021-12-21 16:15:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:15:59,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:00,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:00,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:00,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-21 16:16:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:00,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 16:16:00,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:00,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-21 16:16:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:00,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 16:16:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:00,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:16:00,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:00,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 16:16:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:00,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:16:00,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:00,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:16:00,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:00,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405101772] [2021-12-21 16:16:00,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405101772] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:00,280 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:00,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:16:00,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949174647] [2021-12-21 16:16:00,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:00,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:16:00,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:00,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:16:00,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:16:00,314 INFO L87 Difference]: Start difference. First operand has 668 states, 499 states have (on average 1.3727454909819639) internal successors, (685), 507 states have internal predecessors, (685), 130 states have call successors, (130), 38 states have call predecessors, (130), 37 states have return successors, (126), 126 states have call predecessors, (126), 126 states have call successors, (126) Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 16:16:02,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:02,045 INFO L93 Difference]: Finished difference Result 1682 states and 2401 transitions. [2021-12-21 16:16:02,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:16:02,048 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2021-12-21 16:16:02,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:02,060 INFO L225 Difference]: With dead ends: 1682 [2021-12-21 16:16:02,061 INFO L226 Difference]: Without dead ends: 994 [2021-12-21 16:16:02,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:16:02,069 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 547 mSDsluCounter, 1752 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:02,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 2719 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 16:16:02,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2021-12-21 16:16:02,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 966. [2021-12-21 16:16:02,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 966 states, 732 states have (on average 1.3633879781420766) internal successors, (998), 736 states have internal predecessors, (998), 175 states have call successors, (175), 59 states have call predecessors, (175), 58 states have return successors, (174), 173 states have call predecessors, (174), 174 states have call successors, (174) [2021-12-21 16:16:02,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 966 states to 966 states and 1347 transitions. [2021-12-21 16:16:02,183 INFO L78 Accepts]: Start accepts. Automaton has 966 states and 1347 transitions. Word has length 80 [2021-12-21 16:16:02,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:02,184 INFO L470 AbstractCegarLoop]: Abstraction has 966 states and 1347 transitions. [2021-12-21 16:16:02,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 16:16:02,184 INFO L276 IsEmpty]: Start isEmpty. Operand 966 states and 1347 transitions. [2021-12-21 16:16:02,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-21 16:16:02,189 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:02,189 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 16:16:02,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:16:02,190 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:02,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:02,190 INFO L85 PathProgramCache]: Analyzing trace with hash -488697868, now seen corresponding path program 1 times [2021-12-21 16:16:02,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:02,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135147223] [2021-12-21 16:16:02,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:02,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:02,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:02,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:02,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:02,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:02,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 16:16:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:02,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 16:16:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:02,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 16:16:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:02,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 16:16:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:02,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 16:16:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:02,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:16:02,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:02,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 16:16:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:02,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-21 16:16:02,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:02,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1135147223] [2021-12-21 16:16:02,314 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1135147223] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:02,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:02,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:16:02,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228837539] [2021-12-21 16:16:02,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:02,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:16:02,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:02,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:16:02,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:16:02,317 INFO L87 Difference]: Start difference. First operand 966 states and 1347 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 16:16:04,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:04,205 INFO L93 Difference]: Finished difference Result 2400 states and 3354 transitions. [2021-12-21 16:16:04,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:16:04,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2021-12-21 16:16:04,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:04,215 INFO L225 Difference]: With dead ends: 2400 [2021-12-21 16:16:04,216 INFO L226 Difference]: Without dead ends: 1439 [2021-12-21 16:16:04,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:16:04,223 INFO L933 BasicCegarLoop]: 1342 mSDtfsCounter, 782 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 3227 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:04,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 3227 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 16:16:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2021-12-21 16:16:04,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1378. [2021-12-21 16:16:04,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1043 states have (on average 1.361457334611697) internal successors, (1420), 1048 states have internal predecessors, (1420), 251 states have call successors, (251), 84 states have call predecessors, (251), 83 states have return successors, (250), 249 states have call predecessors, (250), 250 states have call successors, (250) [2021-12-21 16:16:04,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1921 transitions. [2021-12-21 16:16:04,311 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1921 transitions. Word has length 92 [2021-12-21 16:16:04,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:04,311 INFO L470 AbstractCegarLoop]: Abstraction has 1378 states and 1921 transitions. [2021-12-21 16:16:04,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (13), 4 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 16:16:04,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1921 transitions. [2021-12-21 16:16:04,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 16:16:04,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:04,315 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-21 16:16:04,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:16:04,316 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:04,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:04,316 INFO L85 PathProgramCache]: Analyzing trace with hash -51397263, now seen corresponding path program 1 times [2021-12-21 16:16:04,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:04,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844596017] [2021-12-21 16:16:04,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:04,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:04,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:04,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:04,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:16:04,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:04,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 16:16:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:04,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:16:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:04,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 16:16:04,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:04,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 16:16:04,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:04,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 16:16:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:04,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 16:16:04,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:04,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 16:16:04,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:04,474 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-12-21 16:16:04,474 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:04,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844596017] [2021-12-21 16:16:04,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844596017] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:04,474 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:04,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:16:04,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474326043] [2021-12-21 16:16:04,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:04,475 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:16:04,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:04,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:16:04,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:16:04,476 INFO L87 Difference]: Start difference. First operand 1378 states and 1921 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 16:16:05,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:05,711 INFO L93 Difference]: Finished difference Result 2788 states and 3901 transitions. [2021-12-21 16:16:05,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 16:16:05,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 106 [2021-12-21 16:16:05,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:05,716 INFO L225 Difference]: With dead ends: 2788 [2021-12-21 16:16:05,717 INFO L226 Difference]: Without dead ends: 1414 [2021-12-21 16:16:05,720 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:16:05,720 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 193 mSDsluCounter, 2565 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 3456 SdHoareTripleChecker+Invalid, 1000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:05,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 3456 Invalid, 1000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 16:16:05,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1414 states. [2021-12-21 16:16:05,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1414 to 1378. [2021-12-21 16:16:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1378 states, 1043 states have (on average 1.3576222435282839) internal successors, (1416), 1048 states have internal predecessors, (1416), 251 states have call successors, (251), 84 states have call predecessors, (251), 83 states have return successors, (250), 249 states have call predecessors, (250), 250 states have call successors, (250) [2021-12-21 16:16:05,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1378 states to 1378 states and 1917 transitions. [2021-12-21 16:16:05,760 INFO L78 Accepts]: Start accepts. Automaton has 1378 states and 1917 transitions. Word has length 106 [2021-12-21 16:16:05,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:05,760 INFO L470 AbstractCegarLoop]: Abstraction has 1378 states and 1917 transitions. [2021-12-21 16:16:05,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 16:16:05,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1378 states and 1917 transitions. [2021-12-21 16:16:05,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-21 16:16:05,764 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:05,764 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-21 16:16:05,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:16:05,764 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:05,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:05,765 INFO L85 PathProgramCache]: Analyzing trace with hash -822130829, now seen corresponding path program 1 times [2021-12-21 16:16:05,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:05,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272255731] [2021-12-21 16:16:05,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:05,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:05,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:05,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:05,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:05,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:16:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:05,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 16:16:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:05,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:16:05,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:05,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 16:16:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:05,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 16:16:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:05,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 16:16:05,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:05,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 16:16:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:05,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 16:16:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-21 16:16:05,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:05,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272255731] [2021-12-21 16:16:05,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272255731] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:05,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:05,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 16:16:05,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995137605] [2021-12-21 16:16:05,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:05,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 16:16:05,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:05,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 16:16:05,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:16:05,929 INFO L87 Difference]: Start difference. First operand 1378 states and 1917 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 16:16:07,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:07,285 INFO L93 Difference]: Finished difference Result 3210 states and 4565 transitions. [2021-12-21 16:16:07,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:16:07,286 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 106 [2021-12-21 16:16:07,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:07,293 INFO L225 Difference]: With dead ends: 3210 [2021-12-21 16:16:07,293 INFO L226 Difference]: Without dead ends: 1848 [2021-12-21 16:16:07,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:16:07,297 INFO L933 BasicCegarLoop]: 1044 mSDtfsCounter, 649 mSDsluCounter, 3143 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 4187 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:07,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [668 Valid, 4187 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 16:16:07,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2021-12-21 16:16:07,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1384. [2021-12-21 16:16:07,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1049 states have (on average 1.355576739752145) internal successors, (1422), 1052 states have internal predecessors, (1422), 251 states have call successors, (251), 84 states have call predecessors, (251), 83 states have return successors, (250), 249 states have call predecessors, (250), 250 states have call successors, (250) [2021-12-21 16:16:07,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1923 transitions. [2021-12-21 16:16:07,341 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1923 transitions. Word has length 106 [2021-12-21 16:16:07,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:07,341 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 1923 transitions. [2021-12-21 16:16:07,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 2 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-21 16:16:07,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1923 transitions. [2021-12-21 16:16:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-21 16:16:07,344 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:07,344 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-21 16:16:07,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:16:07,345 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:07,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:07,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1216880409, now seen corresponding path program 1 times [2021-12-21 16:16:07,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:07,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127729027] [2021-12-21 16:16:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:07,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:07,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:07,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:07,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:07,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:07,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:16:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:07,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 16:16:07,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:07,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 16:16:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:07,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 16:16:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:07,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 16:16:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:07,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 16:16:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:07,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:16:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:07,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 16:16:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:07,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 16:16:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:07,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 16:16:07,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:07,480 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-21 16:16:07,481 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:07,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127729027] [2021-12-21 16:16:07,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127729027] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:07,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:07,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:16:07,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287625388] [2021-12-21 16:16:07,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:07,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:16:07,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:07,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:16:07,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:16:07,482 INFO L87 Difference]: Start difference. First operand 1384 states and 1923 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:16:08,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:08,615 INFO L93 Difference]: Finished difference Result 2790 states and 3893 transitions. [2021-12-21 16:16:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:16:08,616 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2021-12-21 16:16:08,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:08,621 INFO L225 Difference]: With dead ends: 2790 [2021-12-21 16:16:08,621 INFO L226 Difference]: Without dead ends: 1422 [2021-12-21 16:16:08,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:16:08,626 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 190 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:08,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [196 Valid, 2635 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 16:16:08,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1422 states. [2021-12-21 16:16:08,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1422 to 1386. [2021-12-21 16:16:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1051 states have (on average 1.3549000951474786) internal successors, (1424), 1054 states have internal predecessors, (1424), 251 states have call successors, (251), 84 states have call predecessors, (251), 83 states have return successors, (250), 249 states have call predecessors, (250), 250 states have call successors, (250) [2021-12-21 16:16:08,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1925 transitions. [2021-12-21 16:16:08,666 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1925 transitions. Word has length 117 [2021-12-21 16:16:08,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:08,667 INFO L470 AbstractCegarLoop]: Abstraction has 1386 states and 1925 transitions. [2021-12-21 16:16:08,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:16:08,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1925 transitions. [2021-12-21 16:16:08,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-21 16:16:08,670 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:08,670 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-21 16:16:08,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 16:16:08,670 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:08,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:08,671 INFO L85 PathProgramCache]: Analyzing trace with hash 484912983, now seen corresponding path program 1 times [2021-12-21 16:16:08,671 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:08,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647702379] [2021-12-21 16:16:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:08,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:08,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:08,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:08,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:08,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:16:08,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:08,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 16:16:08,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:08,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 16:16:08,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:08,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 16:16:08,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 16:16:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:08,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 16:16:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:08,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:16:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:08,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 16:16:08,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:08,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 16:16:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:08,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 16:16:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:08,839 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-21 16:16:08,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:08,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647702379] [2021-12-21 16:16:08,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647702379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:08,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:08,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:16:08,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607064408] [2021-12-21 16:16:08,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:08,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:16:08,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:08,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:16:08,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:16:08,841 INFO L87 Difference]: Start difference. First operand 1386 states and 1925 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:16:09,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:09,479 INFO L93 Difference]: Finished difference Result 2794 states and 3897 transitions. [2021-12-21 16:16:09,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:16:09,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2021-12-21 16:16:09,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:09,485 INFO L225 Difference]: With dead ends: 2794 [2021-12-21 16:16:09,485 INFO L226 Difference]: Without dead ends: 1424 [2021-12-21 16:16:09,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:16:09,490 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 280 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:09,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 2226 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 16:16:09,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2021-12-21 16:16:09,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 1388. [2021-12-21 16:16:09,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1388 states, 1053 states have (on average 1.3542260208926875) internal successors, (1426), 1056 states have internal predecessors, (1426), 251 states have call successors, (251), 84 states have call predecessors, (251), 83 states have return successors, (250), 249 states have call predecessors, (250), 250 states have call successors, (250) [2021-12-21 16:16:09,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1388 states to 1388 states and 1927 transitions. [2021-12-21 16:16:09,540 INFO L78 Accepts]: Start accepts. Automaton has 1388 states and 1927 transitions. Word has length 117 [2021-12-21 16:16:09,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:09,540 INFO L470 AbstractCegarLoop]: Abstraction has 1388 states and 1927 transitions. [2021-12-21 16:16:09,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:16:09,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1388 states and 1927 transitions. [2021-12-21 16:16:09,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-21 16:16:09,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:09,546 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-21 16:16:09,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 16:16:09,546 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:09,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:09,547 INFO L85 PathProgramCache]: Analyzing trace with hash -412480295, now seen corresponding path program 1 times [2021-12-21 16:16:09,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:09,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542673256] [2021-12-21 16:16:09,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:09,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:09,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:09,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:09,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:09,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:09,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:16:09,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:09,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 16:16:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:09,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 16:16:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:09,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 16:16:09,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:09,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 16:16:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 16:16:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:09,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 16:16:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:09,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 16:16:09,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:09,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 16:16:09,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:09,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 16:16:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:09,723 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-21 16:16:09,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:09,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542673256] [2021-12-21 16:16:09,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542673256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:09,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:09,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:16:09,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958053380] [2021-12-21 16:16:09,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:09,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:16:09,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:09,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:16:09,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:16:09,726 INFO L87 Difference]: Start difference. First operand 1388 states and 1927 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:16:11,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:11,406 INFO L93 Difference]: Finished difference Result 2838 states and 3961 transitions. [2021-12-21 16:16:11,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 16:16:11,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 117 [2021-12-21 16:16:11,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:11,412 INFO L225 Difference]: With dead ends: 2838 [2021-12-21 16:16:11,412 INFO L226 Difference]: Without dead ends: 1466 [2021-12-21 16:16:11,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:16:11,416 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 119 mSDsluCounter, 2926 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:11,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 3817 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-21 16:16:11,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-12-21 16:16:11,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1394. [2021-12-21 16:16:11,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1394 states, 1057 states have (on average 1.3547776726584673) internal successors, (1432), 1062 states have internal predecessors, (1432), 251 states have call successors, (251), 84 states have call predecessors, (251), 85 states have return successors, (252), 249 states have call predecessors, (252), 250 states have call successors, (252) [2021-12-21 16:16:11,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1394 states to 1394 states and 1935 transitions. [2021-12-21 16:16:11,452 INFO L78 Accepts]: Start accepts. Automaton has 1394 states and 1935 transitions. Word has length 117 [2021-12-21 16:16:11,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:11,453 INFO L470 AbstractCegarLoop]: Abstraction has 1394 states and 1935 transitions. [2021-12-21 16:16:11,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:16:11,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1394 states and 1935 transitions. [2021-12-21 16:16:11,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-21 16:16:11,456 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:11,456 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-21 16:16:11,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 16:16:11,456 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:11,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:11,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2029830177, now seen corresponding path program 1 times [2021-12-21 16:16:11,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:11,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153138308] [2021-12-21 16:16:11,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:11,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:11,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:11,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:11,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:11,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:16:11,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:11,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 16:16:11,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:11,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 16:16:11,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:11,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 16:16:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:11,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-21 16:16:11,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:11,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 16:16:11,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:11,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 16:16:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:11,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 16:16:11,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:11,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 16:16:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-21 16:16:11,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:11,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153138308] [2021-12-21 16:16:11,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153138308] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:11,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:11,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:16:11,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217007633] [2021-12-21 16:16:11,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:11,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:16:11,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:11,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:16:11,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:16:11,642 INFO L87 Difference]: Start difference. First operand 1394 states and 1935 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-21 16:16:13,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:13,186 INFO L93 Difference]: Finished difference Result 3293 states and 4604 transitions. [2021-12-21 16:16:13,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:16:13,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 118 [2021-12-21 16:16:13,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:13,195 INFO L225 Difference]: With dead ends: 3293 [2021-12-21 16:16:13,195 INFO L226 Difference]: Without dead ends: 1915 [2021-12-21 16:16:13,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:16:13,199 INFO L933 BasicCegarLoop]: 965 mSDtfsCounter, 937 mSDsluCounter, 1521 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 516 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 2486 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 516 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:13,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1034 Valid, 2486 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [516 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 16:16:13,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1915 states. [2021-12-21 16:16:13,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1915 to 1843. [2021-12-21 16:16:13,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1406 states have (on average 1.3556187766714083) internal successors, (1906), 1412 states have internal predecessors, (1906), 326 states have call successors, (326), 108 states have call predecessors, (326), 110 states have return successors, (328), 324 states have call predecessors, (328), 325 states have call successors, (328) [2021-12-21 16:16:13,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2560 transitions. [2021-12-21 16:16:13,244 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2560 transitions. Word has length 118 [2021-12-21 16:16:13,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:13,245 INFO L470 AbstractCegarLoop]: Abstraction has 1843 states and 2560 transitions. [2021-12-21 16:16:13,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-12-21 16:16:13,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2560 transitions. [2021-12-21 16:16:13,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-21 16:16:13,249 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:13,249 INFO L514 BasicCegarLoop]: trace histogram [3, 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] [2021-12-21 16:16:13,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 16:16:13,249 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:13,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:13,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1684837886, now seen corresponding path program 1 times [2021-12-21 16:16:13,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:13,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295033876] [2021-12-21 16:16:13,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:13,251 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:13,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:13,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:13,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:13,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:16:13,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:13,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 16:16:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:13,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 16:16:13,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:13,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 16:16:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:13,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 16:16:13,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:13,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-21 16:16:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:13,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-21 16:16:13,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:13,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 16:16:13,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:13,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-21 16:16:13,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:13,396 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 16:16:13,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:13,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295033876] [2021-12-21 16:16:13,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295033876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:13,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:13,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:16:13,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541195490] [2021-12-21 16:16:13,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:13,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:16:13,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:13,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:16:13,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:16:13,398 INFO L87 Difference]: Start difference. First operand 1843 states and 2560 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 16:16:15,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:15,276 INFO L93 Difference]: Finished difference Result 4298 states and 6001 transitions. [2021-12-21 16:16:15,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:16:15,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 132 [2021-12-21 16:16:15,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:15,286 INFO L225 Difference]: With dead ends: 4298 [2021-12-21 16:16:15,286 INFO L226 Difference]: Without dead ends: 2471 [2021-12-21 16:16:15,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:16:15,291 INFO L933 BasicCegarLoop]: 1387 mSDtfsCounter, 883 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 3357 SdHoareTripleChecker+Invalid, 1485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:15,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 3357 Invalid, 1485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 16:16:15,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2471 states. [2021-12-21 16:16:15,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2471 to 2388. [2021-12-21 16:16:15,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2388 states, 1828 states have (on average 1.3550328227571116) internal successors, (2477), 1835 states have internal predecessors, (2477), 417 states have call successors, (417), 139 states have call predecessors, (417), 142 states have return successors, (420), 415 states have call predecessors, (420), 416 states have call successors, (420) [2021-12-21 16:16:15,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2388 states to 2388 states and 3314 transitions. [2021-12-21 16:16:15,352 INFO L78 Accepts]: Start accepts. Automaton has 2388 states and 3314 transitions. Word has length 132 [2021-12-21 16:16:15,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:15,352 INFO L470 AbstractCegarLoop]: Abstraction has 2388 states and 3314 transitions. [2021-12-21 16:16:15,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-21 16:16:15,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2388 states and 3314 transitions. [2021-12-21 16:16:15,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-21 16:16:15,357 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:15,357 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:16:15,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 16:16:15,357 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:15,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:15,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1894180193, now seen corresponding path program 1 times [2021-12-21 16:16:15,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:15,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98481240] [2021-12-21 16:16:15,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:15,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:16:15,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 16:16:15,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 16:16:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 16:16:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 16:16:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 16:16:15,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:16:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:16:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 16:16:15,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-21 16:16:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-21 16:16:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 16:16:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 16:16:15,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-21 16:16:15,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:15,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98481240] [2021-12-21 16:16:15,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98481240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:15,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:15,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:16:15,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252499858] [2021-12-21 16:16:15,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:15,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:16:15,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:15,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:16:15,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:16:15,569 INFO L87 Difference]: Start difference. First operand 2388 states and 3314 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-21 16:16:16,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:16,821 INFO L93 Difference]: Finished difference Result 4894 states and 6827 transitions. [2021-12-21 16:16:16,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:16:16,821 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 137 [2021-12-21 16:16:16,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:16,830 INFO L225 Difference]: With dead ends: 4894 [2021-12-21 16:16:16,831 INFO L226 Difference]: Without dead ends: 2522 [2021-12-21 16:16:16,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:16:16,837 INFO L933 BasicCegarLoop]: 904 mSDtfsCounter, 211 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 761 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 761 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:16,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [219 Valid, 3476 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 761 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 16:16:16,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2021-12-21 16:16:16,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2404. [2021-12-21 16:16:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2404 states, 1840 states have (on average 1.3527173913043478) internal successors, (2489), 1847 states have internal predecessors, (2489), 421 states have call successors, (421), 139 states have call predecessors, (421), 142 states have return successors, (424), 419 states have call predecessors, (424), 420 states have call successors, (424) [2021-12-21 16:16:16,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2404 states to 2404 states and 3334 transitions. [2021-12-21 16:16:16,900 INFO L78 Accepts]: Start accepts. Automaton has 2404 states and 3334 transitions. Word has length 137 [2021-12-21 16:16:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:16,901 INFO L470 AbstractCegarLoop]: Abstraction has 2404 states and 3334 transitions. [2021-12-21 16:16:16,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 4 states have internal predecessors, (89), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-21 16:16:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 2404 states and 3334 transitions. [2021-12-21 16:16:16,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-21 16:16:16,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:16,906 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:16:16,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 16:16:16,906 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:16,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash -27763530, now seen corresponding path program 1 times [2021-12-21 16:16:16,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:16,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695340052] [2021-12-21 16:16:16,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:16,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:16,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:16,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:17,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:16:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 16:16:17,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 16:16:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 16:16:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 16:16:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 16:16:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:16:17,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:16:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 16:16:17,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-21 16:16:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 16:16:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-21 16:16:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 16:16:17,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:17,078 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-21 16:16:17,078 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:17,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695340052] [2021-12-21 16:16:17,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695340052] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:17,078 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:17,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 16:16:17,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93190177] [2021-12-21 16:16:17,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:17,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 16:16:17,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:17,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 16:16:17,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:16:17,080 INFO L87 Difference]: Start difference. First operand 2404 states and 3334 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-21 16:16:18,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:18,944 INFO L93 Difference]: Finished difference Result 5704 states and 8057 transitions. [2021-12-21 16:16:18,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:16:18,945 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 138 [2021-12-21 16:16:18,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:18,960 INFO L225 Difference]: With dead ends: 5704 [2021-12-21 16:16:18,961 INFO L226 Difference]: Without dead ends: 3316 [2021-12-21 16:16:18,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:16:18,968 INFO L933 BasicCegarLoop]: 1036 mSDtfsCounter, 561 mSDsluCounter, 3651 mSDsCounter, 0 mSdLazyCounter, 1144 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 582 SdHoareTripleChecker+Valid, 4687 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 1144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:18,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [582 Valid, 4687 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 1144 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-12-21 16:16:18,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3316 states. [2021-12-21 16:16:19,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3316 to 2400. [2021-12-21 16:16:19,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2400 states, 1836 states have (on average 1.3534858387799564) internal successors, (2485), 1847 states have internal predecessors, (2485), 421 states have call successors, (421), 139 states have call predecessors, (421), 142 states have return successors, (424), 419 states have call predecessors, (424), 420 states have call successors, (424) [2021-12-21 16:16:19,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2400 states to 2400 states and 3330 transitions. [2021-12-21 16:16:19,049 INFO L78 Accepts]: Start accepts. Automaton has 2400 states and 3330 transitions. Word has length 138 [2021-12-21 16:16:19,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:19,050 INFO L470 AbstractCegarLoop]: Abstraction has 2400 states and 3330 transitions. [2021-12-21 16:16:19,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (18), 5 states have call predecessors, (18), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-21 16:16:19,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2400 states and 3330 transitions. [2021-12-21 16:16:19,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-12-21 16:16:19,054 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:19,054 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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] [2021-12-21 16:16:19,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 16:16:19,055 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:19,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:19,055 INFO L85 PathProgramCache]: Analyzing trace with hash -543443527, now seen corresponding path program 1 times [2021-12-21 16:16:19,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:19,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266245370] [2021-12-21 16:16:19,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:19,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:19,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:16:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:19,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:16:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:19,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 16:16:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:19,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 16:16:19,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:19,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 16:16:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:19,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:16:19,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:19,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 16:16:19,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:19,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 16:16:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:19,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-21 16:16:19,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:19,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-21 16:16:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:19,263 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2021-12-21 16:16:19,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:19,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266245370] [2021-12-21 16:16:19,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266245370] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:19,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:19,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:16:19,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837595894] [2021-12-21 16:16:19,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:19,265 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:16:19,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:19,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:16:19,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:16:19,266 INFO L87 Difference]: Start difference. First operand 2400 states and 3330 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:16:21,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:21,139 INFO L93 Difference]: Finished difference Result 5326 states and 7431 transitions. [2021-12-21 16:16:21,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:16:21,141 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 146 [2021-12-21 16:16:21,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:21,152 INFO L225 Difference]: With dead ends: 5326 [2021-12-21 16:16:21,152 INFO L226 Difference]: Without dead ends: 2942 [2021-12-21 16:16:21,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:16:21,159 INFO L933 BasicCegarLoop]: 1367 mSDtfsCounter, 871 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:21,159 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 3337 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 1090 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 16:16:21,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2021-12-21 16:16:21,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2848. [2021-12-21 16:16:21,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2848 states, 2184 states have (on average 1.3543956043956045) internal successors, (2958), 2197 states have internal predecessors, (2958), 497 states have call successors, (497), 162 states have call predecessors, (497), 166 states have return successors, (501), 495 states have call predecessors, (501), 496 states have call successors, (501) [2021-12-21 16:16:21,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2848 states to 2848 states and 3956 transitions. [2021-12-21 16:16:21,237 INFO L78 Accepts]: Start accepts. Automaton has 2848 states and 3956 transitions. Word has length 146 [2021-12-21 16:16:21,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:21,238 INFO L470 AbstractCegarLoop]: Abstraction has 2848 states and 3956 transitions. [2021-12-21 16:16:21,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:16:21,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2848 states and 3956 transitions. [2021-12-21 16:16:21,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-21 16:16:21,243 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:21,243 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 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] [2021-12-21 16:16:21,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 16:16:21,244 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:21,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:21,244 INFO L85 PathProgramCache]: Analyzing trace with hash 916287682, now seen corresponding path program 1 times [2021-12-21 16:16:21,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:21,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369498013] [2021-12-21 16:16:21,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:21,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:21,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:21,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:21,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:21,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:21,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:16:21,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:21,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:16:21,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 16:16:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:21,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 16:16:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:21,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 16:16:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:21,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-21 16:16:21,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:21,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-21 16:16:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-21 16:16:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:21,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 16:16:21,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:21,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-21 16:16:21,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:21,377 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-21 16:16:21,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:21,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369498013] [2021-12-21 16:16:21,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369498013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:21,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:21,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:16:21,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214199233] [2021-12-21 16:16:21,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:21,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:16:21,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:21,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:16:21,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:16:21,380 INFO L87 Difference]: Start difference. First operand 2848 states and 3956 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:16:23,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:23,437 INFO L93 Difference]: Finished difference Result 6233 states and 8701 transitions. [2021-12-21 16:16:23,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:16:23,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 157 [2021-12-21 16:16:23,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:23,449 INFO L225 Difference]: With dead ends: 6233 [2021-12-21 16:16:23,450 INFO L226 Difference]: Without dead ends: 3401 [2021-12-21 16:16:23,456 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:16:23,457 INFO L933 BasicCegarLoop]: 1368 mSDtfsCounter, 869 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 3342 SdHoareTripleChecker+Invalid, 1589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 498 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:23,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [966 Valid, 3342 Invalid, 1589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [498 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 16:16:23,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2021-12-21 16:16:23,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 3296. [2021-12-21 16:16:23,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3296 states, 2532 states have (on average 1.3550552922590837) internal successors, (3431), 2547 states have internal predecessors, (3431), 573 states have call successors, (573), 185 states have call predecessors, (573), 190 states have return successors, (578), 571 states have call predecessors, (578), 572 states have call successors, (578) [2021-12-21 16:16:23,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3296 states to 3296 states and 4582 transitions. [2021-12-21 16:16:23,537 INFO L78 Accepts]: Start accepts. Automaton has 3296 states and 4582 transitions. Word has length 157 [2021-12-21 16:16:23,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:23,537 INFO L470 AbstractCegarLoop]: Abstraction has 3296 states and 4582 transitions. [2021-12-21 16:16:23,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 3 states have internal predecessors, (107), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:16:23,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3296 states and 4582 transitions. [2021-12-21 16:16:23,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-21 16:16:23,544 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:23,544 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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] [2021-12-21 16:16:23,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 16:16:23,544 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:23,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:23,545 INFO L85 PathProgramCache]: Analyzing trace with hash -984489700, now seen corresponding path program 1 times [2021-12-21 16:16:23,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:23,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225406698] [2021-12-21 16:16:23,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:23,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:23,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:23,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:23,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:23,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:23,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:23,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:16:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:23,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:16:23,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:23,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 16:16:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:23,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:16:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:23,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-21 16:16:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:23,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 16:16:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:23,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 16:16:23,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:23,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-21 16:16:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:23,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-21 16:16:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:23,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-21 16:16:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-12-21 16:16:23,669 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:23,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225406698] [2021-12-21 16:16:23,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225406698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:23,669 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:23,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 16:16:23,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835574350] [2021-12-21 16:16:23,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:23,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:16:23,670 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:23,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:16:23,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 16:16:23,671 INFO L87 Difference]: Start difference. First operand 3296 states and 4582 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:16:26,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:26,258 INFO L93 Difference]: Finished difference Result 7140 states and 9971 transitions. [2021-12-21 16:16:26,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:16:26,258 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 161 [2021-12-21 16:16:26,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:26,270 INFO L225 Difference]: With dead ends: 7140 [2021-12-21 16:16:26,270 INFO L226 Difference]: Without dead ends: 3860 [2021-12-21 16:16:26,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:16:26,279 INFO L933 BasicCegarLoop]: 1368 mSDtfsCounter, 779 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 3872 SdHoareTripleChecker+Invalid, 2059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:26,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 3872 Invalid, 2059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-21 16:16:26,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3860 states. [2021-12-21 16:16:26,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3860 to 3744. [2021-12-21 16:16:26,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3744 states, 2880 states have (on average 1.3555555555555556) internal successors, (3904), 2897 states have internal predecessors, (3904), 649 states have call successors, (649), 208 states have call predecessors, (649), 214 states have return successors, (655), 647 states have call predecessors, (655), 648 states have call successors, (655) [2021-12-21 16:16:26,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3744 states to 3744 states and 5208 transitions. [2021-12-21 16:16:26,369 INFO L78 Accepts]: Start accepts. Automaton has 3744 states and 5208 transitions. Word has length 161 [2021-12-21 16:16:26,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:26,370 INFO L470 AbstractCegarLoop]: Abstraction has 3744 states and 5208 transitions. [2021-12-21 16:16:26,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 5 states have call predecessors, (16), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-21 16:16:26,370 INFO L276 IsEmpty]: Start isEmpty. Operand 3744 states and 5208 transitions. [2021-12-21 16:16:26,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-21 16:16:26,376 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:26,376 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:16:26,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 16:16:26,377 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:26,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:26,377 INFO L85 PathProgramCache]: Analyzing trace with hash -324362303, now seen corresponding path program 1 times [2021-12-21 16:16:26,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:26,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141344964] [2021-12-21 16:16:26,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:26,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:16:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 16:16:26,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 16:16:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 16:16:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 16:16:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 16:16:26,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:16:26,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 16:16:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:16:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 16:16:26,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 16:16:26,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:16:26,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:16:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 16:16:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 16:16:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 16:16:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 16:16:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-21 16:16:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:26,623 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-21 16:16:26,623 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:26,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141344964] [2021-12-21 16:16:26,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141344964] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:26,624 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:26,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:16:26,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668054913] [2021-12-21 16:16:26,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:26,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:16:26,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:26,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:16:26,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:16:26,625 INFO L87 Difference]: Start difference. First operand 3744 states and 5208 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 16:16:28,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:28,602 INFO L93 Difference]: Finished difference Result 7644 states and 10657 transitions. [2021-12-21 16:16:28,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 16:16:28,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 172 [2021-12-21 16:16:28,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:28,614 INFO L225 Difference]: With dead ends: 7644 [2021-12-21 16:16:28,615 INFO L226 Difference]: Without dead ends: 3916 [2021-12-21 16:16:28,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:16:28,622 INFO L933 BasicCegarLoop]: 861 mSDtfsCounter, 147 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:28,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 2902 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 16:16:28,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3916 states. [2021-12-21 16:16:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3916 to 3751. [2021-12-21 16:16:28,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3751 states, 2887 states have (on average 1.3546934534118462) internal successors, (3911), 2904 states have internal predecessors, (3911), 649 states have call successors, (649), 208 states have call predecessors, (649), 214 states have return successors, (655), 647 states have call predecessors, (655), 648 states have call successors, (655) [2021-12-21 16:16:28,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3751 states to 3751 states and 5215 transitions. [2021-12-21 16:16:28,718 INFO L78 Accepts]: Start accepts. Automaton has 3751 states and 5215 transitions. Word has length 172 [2021-12-21 16:16:28,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:28,718 INFO L470 AbstractCegarLoop]: Abstraction has 3751 states and 5215 transitions. [2021-12-21 16:16:28,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (23), 6 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 16:16:28,719 INFO L276 IsEmpty]: Start isEmpty. Operand 3751 states and 5215 transitions. [2021-12-21 16:16:28,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-21 16:16:28,725 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:16:28,725 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:16:28,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 16:16:28,725 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:16:28,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:16:28,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1345430657, now seen corresponding path program 1 times [2021-12-21 16:16:28,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:16:28,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78911968] [2021-12-21 16:16:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:16:28,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:16:28,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:16:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 16:16:28,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:16:28,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 16:16:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 16:16:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 16:16:28,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 16:16:28,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 16:16:28,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:16:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 16:16:28,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:16:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 16:16:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-21 16:16:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 16:16:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:28,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 16:16:28,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-21 16:16:29,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:29,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-21 16:16:29,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:29,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 16:16:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:29,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-21 16:16:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:29,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-21 16:16:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:16:29,027 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-12-21 16:16:29,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:16:29,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78911968] [2021-12-21 16:16:29,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78911968] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:16:29,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:16:29,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:16:29,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327351637] [2021-12-21 16:16:29,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:16:29,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:16:29,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:16:29,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:16:29,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:16:29,030 INFO L87 Difference]: Start difference. First operand 3751 states and 5215 transitions. Second operand has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 16:16:30,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:16:30,895 INFO L93 Difference]: Finished difference Result 3916 states and 5459 transitions. [2021-12-21 16:16:30,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:16:30,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 172 [2021-12-21 16:16:30,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:16:30,896 INFO L225 Difference]: With dead ends: 3916 [2021-12-21 16:16:30,897 INFO L226 Difference]: Without dead ends: 0 [2021-12-21 16:16:30,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-21 16:16:30,903 INFO L933 BasicCegarLoop]: 858 mSDtfsCounter, 1029 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 2162 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 16:16:30,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 2162 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 16:16:30,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-21 16:16:30,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-21 16:16:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 16:16:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-21 16:16:30,905 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2021-12-21 16:16:30,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:16:30,905 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 16:16:30,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.142857142857142) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (23), 7 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-21 16:16:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-21 16:16:30,905 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-21 16:16:30,907 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 16:16:30,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 16:16:30,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.