./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.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-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.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 d9b118296c3c6ba241fa831bfdb5289a0072e9871a56ce58ee16beb68bb5aa55 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:40:06,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:40:06,390 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:40:06,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:40:06,431 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:40:06,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:40:06,435 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:40:06,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:40:06,438 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:40:06,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:40:06,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:40:06,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:40:06,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:40:06,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:40:06,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:40:06,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:40:06,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:40:06,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:40:06,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:40:06,459 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:40:06,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:40:06,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:40:06,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:40:06,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:40:06,469 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:40:06,469 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:40:06,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:40:06,471 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:40:06,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:40:06,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:40:06,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:40:06,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:40:06,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:40:06,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:40:06,475 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:40:06,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:40:06,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:40:06,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:40:06,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:40:06,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:40:06,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:40:06,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 15:40:06,504 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:40:06,504 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:40:06,504 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:40:06,504 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:40:06,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:40:06,505 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:40:06,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:40:06,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:40:06,506 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:40:06,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:40:06,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:40:06,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:40:06,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:40:06,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:40:06,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:40:06,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:40:06,508 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:40:06,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:40:06,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:40:06,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:40:06,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:40:06,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:40:06,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:40:06,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:40:06,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:40:06,509 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:40:06,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:40:06,510 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:40:06,510 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:40:06,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:40:06,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:40:06,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9b118296c3c6ba241fa831bfdb5289a0072e9871a56ce58ee16beb68bb5aa55 [2021-12-21 15:40:06,675 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:40:06,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:40:06,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:40:06,703 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:40:06,704 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:40:06,705 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2021-12-21 15:40:06,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a1d57417/68b978e4462e47ff963f28efd29b7fe4/FLAG695450cca [2021-12-21 15:40:07,341 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:40:07,341 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2021-12-21 15:40:07,361 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a1d57417/68b978e4462e47ff963f28efd29b7fe4/FLAG695450cca [2021-12-21 15:40:07,785 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a1d57417/68b978e4462e47ff963f28efd29b7fe4 [2021-12-21 15:40:07,787 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:40:07,788 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:40:07,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:40:07,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:40:07,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:40:07,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:40:07" (1/1) ... [2021-12-21 15:40:07,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@349e5043 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:07, skipping insertion in model container [2021-12-21 15:40:07,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:40:07" (1/1) ... [2021-12-21 15:40:07,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:40:07,858 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:40:08,438 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-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i[146121,146134] [2021-12-21 15:40:08,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:40:08,505 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:40:08,650 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-3.0/usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i[146121,146134] [2021-12-21 15:40:08,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:40:08,712 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:40:08,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:08 WrapperNode [2021-12-21 15:40:08,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:40:08,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:40:08,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:40:08,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:40:08,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:08" (1/1) ... [2021-12-21 15:40:08,758 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:08" (1/1) ... [2021-12-21 15:40:08,806 INFO L137 Inliner]: procedures = 81, calls = 494, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 1672 [2021-12-21 15:40:08,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:40:08,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:40:08,807 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:40:08,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:40:08,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:08" (1/1) ... [2021-12-21 15:40:08,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:08" (1/1) ... [2021-12-21 15:40:08,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:08" (1/1) ... [2021-12-21 15:40:08,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:08" (1/1) ... [2021-12-21 15:40:08,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:08" (1/1) ... [2021-12-21 15:40:08,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:08" (1/1) ... [2021-12-21 15:40:08,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:08" (1/1) ... [2021-12-21 15:40:08,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:40:08,911 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:40:08,912 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:40:08,912 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:40:08,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:08" (1/1) ... [2021-12-21 15:40:08,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:40:08,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:40:08,957 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 15:40:08,975 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 15:40:08,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:40:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure ir_init [2021-12-21 15:40:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_init [2021-12-21 15:40:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:40:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure ir_exit [2021-12-21 15:40:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_exit [2021-12-21 15:40:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:40:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 15:40:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-21 15:40:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-21 15:40:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-21 15:40:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-21 15:40:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 15:40:08,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 15:40:08,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-12-21 15:40:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-12-21 15:40:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:40:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 15:40:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 15:40:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 15:40:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:40:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2021-12-21 15:40:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2021-12-21 15:40:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-12-21 15:40:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-12-21 15:40:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 15:40:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 15:40:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure ir_xbof_change [2021-12-21 15:40:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_xbof_change [2021-12-21 15:40:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-12-21 15:40:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-12-21 15:40:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2021-12-21 15:40:08,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2021-12-21 15:40:08,989 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:40:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:40:08,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:40:08,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:40:09,225 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:40:09,227 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:40:09,230 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-21 15:40:09,281 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2021-12-21 15:40:09,281 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2021-12-21 15:40:09,361 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-12-21 15:40:09,369 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-21 15:40:09,371 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-21 15:40:09,390 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-21 15:40:10,025 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume !false; [2021-12-21 15:40:10,026 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##73: assume false; [2021-12-21 15:40:10,026 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume false; [2021-12-21 15:40:10,026 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##259: assume !false; [2021-12-21 15:40:10,026 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2021-12-21 15:40:10,026 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2021-12-21 15:40:10,030 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:40:10,042 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:40:10,042 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-12-21 15:40:10,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:40:10 BoogieIcfgContainer [2021-12-21 15:40:10,045 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:40:10,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:40:10,046 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:40:10,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:40:10,049 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:40:07" (1/3) ... [2021-12-21 15:40:10,049 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc6ced1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:40:10, skipping insertion in model container [2021-12-21 15:40:10,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:08" (2/3) ... [2021-12-21 15:40:10,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc6ced1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:40:10, skipping insertion in model container [2021-12-21 15:40:10,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:40:10" (3/3) ... [2021-12-21 15:40:10,051 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2021-12-21 15:40:10,056 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:40:10,057 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:40:10,097 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:40:10,103 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 15:40:10,104 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:40:10,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 301 states, 262 states have (on average 1.5076335877862594) internal successors, (395), 272 states have internal predecessors, (395), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2021-12-21 15:40:10,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 15:40:10,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:10,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:10,130 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:10,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:10,137 INFO L85 PathProgramCache]: Analyzing trace with hash -248243768, now seen corresponding path program 1 times [2021-12-21 15:40:10,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:10,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788337513] [2021-12-21 15:40:10,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:10,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:10,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:10,582 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 15:40:10,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:10,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788337513] [2021-12-21 15:40:10,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788337513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:10,583 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:10,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:40:10,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374716337] [2021-12-21 15:40:10,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:10,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:40:10,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:10,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:40:10,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:40:10,607 INFO L87 Difference]: Start difference. First operand has 301 states, 262 states have (on average 1.5076335877862594) internal successors, (395), 272 states have internal predecessors, (395), 25 states have call successors, (25), 13 states have call predecessors, (25), 12 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 15:40:11,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:11,301 INFO L93 Difference]: Finished difference Result 845 states and 1261 transitions. [2021-12-21 15:40:11,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:40:11,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-21 15:40:11,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:11,317 INFO L225 Difference]: With dead ends: 845 [2021-12-21 15:40:11,318 INFO L226 Difference]: Without dead ends: 538 [2021-12-21 15:40:11,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:40:11,328 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 460 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:11,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 1291 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 15:40:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-12-21 15:40:11,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 528. [2021-12-21 15:40:11,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 469 states have (on average 1.3411513859275053) internal successors, (629), 478 states have internal predecessors, (629), 38 states have call successors, (38), 21 states have call predecessors, (38), 20 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2021-12-21 15:40:11,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 702 transitions. [2021-12-21 15:40:11,406 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 702 transitions. Word has length 18 [2021-12-21 15:40:11,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:11,407 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 702 transitions. [2021-12-21 15:40:11,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 15:40:11,407 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 702 transitions. [2021-12-21 15:40:11,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-21 15:40:11,408 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:11,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:11,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:40:11,409 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:11,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash -835049782, now seen corresponding path program 1 times [2021-12-21 15:40:11,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:11,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401847994] [2021-12-21 15:40:11,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:11,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:11,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:11,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,540 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 15:40:11,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:11,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401847994] [2021-12-21 15:40:11,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401847994] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:11,541 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:11,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:40:11,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142749457] [2021-12-21 15:40:11,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:11,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:40:11,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:11,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:40:11,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:40:11,544 INFO L87 Difference]: Start difference. First operand 528 states and 702 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 15:40:11,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:11,952 INFO L93 Difference]: Finished difference Result 1543 states and 2060 transitions. [2021-12-21 15:40:11,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 15:40:11,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-12-21 15:40:11,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:11,957 INFO L225 Difference]: With dead ends: 1543 [2021-12-21 15:40:11,957 INFO L226 Difference]: Without dead ends: 1033 [2021-12-21 15:40:11,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:40:11,960 INFO L933 BasicCegarLoop]: 412 mSDtfsCounter, 470 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 928 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:11,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 928 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:40:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-12-21 15:40:11,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1020. [2021-12-21 15:40:11,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1020 states, 913 states have (on average 1.343921139101862) internal successors, (1227), 926 states have internal predecessors, (1227), 69 states have call successors, (69), 38 states have call predecessors, (69), 37 states have return successors, (66), 63 states have call predecessors, (66), 66 states have call successors, (66) [2021-12-21 15:40:12,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1362 transitions. [2021-12-21 15:40:12,001 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1362 transitions. Word has length 18 [2021-12-21 15:40:12,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:12,001 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 1362 transitions. [2021-12-21 15:40:12,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 15:40:12,002 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1362 transitions. [2021-12-21 15:40:12,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-21 15:40:12,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:12,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:12,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:40:12,003 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:12,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:12,003 INFO L85 PathProgramCache]: Analyzing trace with hash -116851219, now seen corresponding path program 1 times [2021-12-21 15:40:12,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:12,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412571044] [2021-12-21 15:40:12,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:12,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:12,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:12,106 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 15:40:12,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:12,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412571044] [2021-12-21 15:40:12,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412571044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:12,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:12,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:40:12,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087432546] [2021-12-21 15:40:12,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:12,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:40:12,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:12,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:40:12,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:40:12,108 INFO L87 Difference]: Start difference. First operand 1020 states and 1362 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 15:40:12,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:12,308 INFO L93 Difference]: Finished difference Result 1022 states and 1363 transitions. [2021-12-21 15:40:12,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 15:40:12,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2021-12-21 15:40:12,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:12,313 INFO L225 Difference]: With dead ends: 1022 [2021-12-21 15:40:12,314 INFO L226 Difference]: Without dead ends: 1001 [2021-12-21 15:40:12,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:40:12,319 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 421 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:12,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 595 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 15:40:12,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2021-12-21 15:40:12,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2021-12-21 15:40:12,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 902 states have (on average 1.3414634146341464) internal successors, (1210), 912 states have internal predecessors, (1210), 64 states have call successors, (64), 35 states have call predecessors, (64), 34 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2021-12-21 15:40:12,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1336 transitions. [2021-12-21 15:40:12,357 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1336 transitions. Word has length 19 [2021-12-21 15:40:12,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:12,358 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1336 transitions. [2021-12-21 15:40:12,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 states have internal predecessors, (16), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 15:40:12,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1336 transitions. [2021-12-21 15:40:12,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-21 15:40:12,367 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:12,367 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:12,367 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 15:40:12,368 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:12,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:12,368 INFO L85 PathProgramCache]: Analyzing trace with hash -470649452, now seen corresponding path program 1 times [2021-12-21 15:40:12,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:12,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493993433] [2021-12-21 15:40:12,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:12,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:12,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:12,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:12,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:12,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 15:40:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:12,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:12,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:40:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:12,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 15:40:12,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:12,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493993433] [2021-12-21 15:40:12,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493993433] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:12,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:12,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:40:12,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702855819] [2021-12-21 15:40:12,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:12,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:40:12,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:12,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:40:12,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:40:12,547 INFO L87 Difference]: Start difference. First operand 1001 states and 1336 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 15:40:13,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:13,313 INFO L93 Difference]: Finished difference Result 2037 states and 2716 transitions. [2021-12-21 15:40:13,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:40:13,314 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 76 [2021-12-21 15:40:13,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:13,320 INFO L225 Difference]: With dead ends: 2037 [2021-12-21 15:40:13,321 INFO L226 Difference]: Without dead ends: 1057 [2021-12-21 15:40:13,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:40:13,323 INFO L933 BasicCegarLoop]: 329 mSDtfsCounter, 573 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:13,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 1473 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 15:40:13,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2021-12-21 15:40:13,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1001. [2021-12-21 15:40:13,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 902 states have (on average 1.3392461197339247) internal successors, (1208), 912 states have internal predecessors, (1208), 64 states have call successors, (64), 35 states have call predecessors, (64), 34 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2021-12-21 15:40:13,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1334 transitions. [2021-12-21 15:40:13,363 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1334 transitions. Word has length 76 [2021-12-21 15:40:13,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:13,363 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1334 transitions. [2021-12-21 15:40:13,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 15:40:13,363 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1334 transitions. [2021-12-21 15:40:13,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-21 15:40:13,365 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:13,365 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:13,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 15:40:13,365 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:13,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:13,366 INFO L85 PathProgramCache]: Analyzing trace with hash -26748778, now seen corresponding path program 1 times [2021-12-21 15:40:13,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:13,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884333641] [2021-12-21 15:40:13,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:13,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:13,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:13,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 15:40:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:40:13,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 15:40:13,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:13,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884333641] [2021-12-21 15:40:13,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884333641] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:13,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:13,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:40:13,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176931901] [2021-12-21 15:40:13,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:13,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:40:13,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:13,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:40:13,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:40:13,522 INFO L87 Difference]: Start difference. First operand 1001 states and 1334 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 15:40:14,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:14,184 INFO L93 Difference]: Finished difference Result 2033 states and 2706 transitions. [2021-12-21 15:40:14,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:40:14,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 76 [2021-12-21 15:40:14,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:14,189 INFO L225 Difference]: With dead ends: 2033 [2021-12-21 15:40:14,190 INFO L226 Difference]: Without dead ends: 1053 [2021-12-21 15:40:14,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:40:14,192 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 564 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:14,193 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 1476 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 15:40:14,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2021-12-21 15:40:14,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 997. [2021-12-21 15:40:14,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 900 states have (on average 1.3377777777777777) internal successors, (1204), 910 states have internal predecessors, (1204), 62 states have call successors, (62), 35 states have call predecessors, (62), 34 states have return successors, (60), 58 states have call predecessors, (60), 60 states have call successors, (60) [2021-12-21 15:40:14,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1326 transitions. [2021-12-21 15:40:14,222 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1326 transitions. Word has length 76 [2021-12-21 15:40:14,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:14,222 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1326 transitions. [2021-12-21 15:40:14,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 4 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 15:40:14,223 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1326 transitions. [2021-12-21 15:40:14,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-21 15:40:14,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:14,224 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:14,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:40:14,225 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:14,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:14,225 INFO L85 PathProgramCache]: Analyzing trace with hash -481270382, now seen corresponding path program 1 times [2021-12-21 15:40:14,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:14,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316693639] [2021-12-21 15:40:14,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:14,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 15:40:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:40:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,384 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 15:40:14,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:14,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316693639] [2021-12-21 15:40:14,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316693639] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:14,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:14,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:40:14,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083010466] [2021-12-21 15:40:14,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:14,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:40:14,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:14,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:40:14,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:40:14,387 INFO L87 Difference]: Start difference. First operand 997 states and 1326 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-21 15:40:14,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:14,908 INFO L93 Difference]: Finished difference Result 2989 states and 4048 transitions. [2021-12-21 15:40:14,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:40:14,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 76 [2021-12-21 15:40:14,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:14,915 INFO L225 Difference]: With dead ends: 2989 [2021-12-21 15:40:14,916 INFO L226 Difference]: Without dead ends: 2013 [2021-12-21 15:40:14,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:40:14,919 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 654 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 666 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:14,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 2823 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:40:14,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2021-12-21 15:40:14,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 973. [2021-12-21 15:40:14,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 885 states have (on average 1.335593220338983) internal successors, (1182), 891 states have internal predecessors, (1182), 55 states have call successors, (55), 33 states have call predecessors, (55), 32 states have return successors, (53), 52 states have call predecessors, (53), 53 states have call successors, (53) [2021-12-21 15:40:14,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1290 transitions. [2021-12-21 15:40:14,958 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1290 transitions. Word has length 76 [2021-12-21 15:40:14,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:14,959 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1290 transitions. [2021-12-21 15:40:14,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-21 15:40:14,959 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1290 transitions. [2021-12-21 15:40:14,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-21 15:40:14,960 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:14,961 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] [2021-12-21 15:40:14,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 15:40:14,961 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:14,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:14,961 INFO L85 PathProgramCache]: Analyzing trace with hash -1149604904, now seen corresponding path program 1 times [2021-12-21 15:40:14,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:14,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333615064] [2021-12-21 15:40:14,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:14,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:15,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 15:40:15,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 15:40:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:40:15,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:15,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333615064] [2021-12-21 15:40:15,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333615064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:15,183 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:15,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:40:15,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664082286] [2021-12-21 15:40:15,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:15,184 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:40:15,184 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:15,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:40:15,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:40:15,185 INFO L87 Difference]: Start difference. First operand 973 states and 1290 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-21 15:40:15,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:15,741 INFO L93 Difference]: Finished difference Result 2228 states and 3006 transitions. [2021-12-21 15:40:15,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:40:15,742 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 73 [2021-12-21 15:40:15,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:15,749 INFO L225 Difference]: With dead ends: 2228 [2021-12-21 15:40:15,749 INFO L226 Difference]: Without dead ends: 1727 [2021-12-21 15:40:15,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-21 15:40:15,753 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 389 mSDsluCounter, 3500 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 4135 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:15,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 4135 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:40:15,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2021-12-21 15:40:15,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1001. [2021-12-21 15:40:15,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 905 states have (on average 1.3281767955801105) internal successors, (1202), 911 states have internal predecessors, (1202), 55 states have call successors, (55), 33 states have call predecessors, (55), 40 states have return successors, (69), 60 states have call predecessors, (69), 53 states have call successors, (69) [2021-12-21 15:40:15,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1326 transitions. [2021-12-21 15:40:15,797 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1326 transitions. Word has length 73 [2021-12-21 15:40:15,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:15,798 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1326 transitions. [2021-12-21 15:40:15,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-21 15:40:15,798 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1326 transitions. [2021-12-21 15:40:15,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-21 15:40:15,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:15,800 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] [2021-12-21 15:40:15,800 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 15:40:15,800 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:15,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:15,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1404341449, now seen corresponding path program 1 times [2021-12-21 15:40:15,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:15,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058080257] [2021-12-21 15:40:15,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:15,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:15,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:15,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 15:40:15,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:15,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:15,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 15:40:16,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:16,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:16,025 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:40:16,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:16,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058080257] [2021-12-21 15:40:16,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058080257] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:16,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:16,026 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 15:40:16,026 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803938395] [2021-12-21 15:40:16,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:16,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:40:16,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:16,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:40:16,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:40:16,027 INFO L87 Difference]: Start difference. First operand 1001 states and 1326 transitions. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-21 15:40:16,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:16,816 INFO L93 Difference]: Finished difference Result 2242 states and 3020 transitions. [2021-12-21 15:40:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 15:40:16,817 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 73 [2021-12-21 15:40:16,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:16,822 INFO L225 Difference]: With dead ends: 2242 [2021-12-21 15:40:16,823 INFO L226 Difference]: Without dead ends: 1727 [2021-12-21 15:40:16,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2021-12-21 15:40:16,825 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 1004 mSDsluCounter, 5205 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1015 SdHoareTripleChecker+Valid, 5944 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:16,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 5944 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 15:40:16,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2021-12-21 15:40:16,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1001. [2021-12-21 15:40:16,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1001 states, 905 states have (on average 1.3259668508287292) internal successors, (1200), 911 states have internal predecessors, (1200), 55 states have call successors, (55), 33 states have call predecessors, (55), 40 states have return successors, (69), 60 states have call predecessors, (69), 53 states have call successors, (69) [2021-12-21 15:40:16,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1324 transitions. [2021-12-21 15:40:16,891 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1324 transitions. Word has length 73 [2021-12-21 15:40:16,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:16,891 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1324 transitions. [2021-12-21 15:40:16,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2021-12-21 15:40:16,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1324 transitions. [2021-12-21 15:40:16,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-21 15:40:16,893 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:16,893 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] [2021-12-21 15:40:16,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 15:40:16,893 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:16,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:16,894 INFO L85 PathProgramCache]: Analyzing trace with hash -264483951, now seen corresponding path program 1 times [2021-12-21 15:40:16,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:16,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876459838] [2021-12-21 15:40:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:16,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:17,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 15:40:17,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:40:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:17,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 15:40:17,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:17,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876459838] [2021-12-21 15:40:17,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876459838] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:17,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:17,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:40:17,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343239085] [2021-12-21 15:40:17,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:17,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:40:17,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:17,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:40:17,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:40:17,053 INFO L87 Difference]: Start difference. First operand 1001 states and 1324 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 15:40:17,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:17,646 INFO L93 Difference]: Finished difference Result 1540 states and 2037 transitions. [2021-12-21 15:40:17,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 15:40:17,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) Word has length 76 [2021-12-21 15:40:17,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:17,652 INFO L225 Difference]: With dead ends: 1540 [2021-12-21 15:40:17,652 INFO L226 Difference]: Without dead ends: 1537 [2021-12-21 15:40:17,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:40:17,654 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 980 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1006 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:17,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1006 Valid, 2323 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 15:40:17,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2021-12-21 15:40:17,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1499. [2021-12-21 15:40:17,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1499 states, 1356 states have (on average 1.3281710914454277) internal successors, (1801), 1366 states have internal predecessors, (1801), 83 states have call successors, (83), 48 states have call predecessors, (83), 59 states have return successors, (108), 91 states have call predecessors, (108), 81 states have call successors, (108) [2021-12-21 15:40:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 1992 transitions. [2021-12-21 15:40:17,731 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 1992 transitions. Word has length 76 [2021-12-21 15:40:17,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:17,732 INFO L470 AbstractCegarLoop]: Abstraction has 1499 states and 1992 transitions. [2021-12-21 15:40:17,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 5 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 4 states have call successors, (6) [2021-12-21 15:40:17,732 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 1992 transitions. [2021-12-21 15:40:17,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-21 15:40:17,734 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:17,734 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:40:17,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 15:40:17,735 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:17,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:17,735 INFO L85 PathProgramCache]: Analyzing trace with hash 299119202, now seen corresponding path program 1 times [2021-12-21 15:40:17,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:17,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706088287] [2021-12-21 15:40:17,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:17,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:17,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-21 15:40:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:40:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:17,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-21 15:40:17,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-21 15:40:17,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,918 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 15:40:17,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:17,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706088287] [2021-12-21 15:40:17,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706088287] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:17,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:17,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:40:17,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750306247] [2021-12-21 15:40:17,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:17,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:40:17,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:17,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:40:17,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:40:17,920 INFO L87 Difference]: Start difference. First operand 1499 states and 1992 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:18,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:18,609 INFO L93 Difference]: Finished difference Result 4547 states and 6038 transitions. [2021-12-21 15:40:18,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:40:18,609 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 93 [2021-12-21 15:40:18,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:18,618 INFO L225 Difference]: With dead ends: 4547 [2021-12-21 15:40:18,619 INFO L226 Difference]: Without dead ends: 3057 [2021-12-21 15:40:18,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:40:18,622 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 805 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:18,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 2034 Invalid, 592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 15:40:18,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2021-12-21 15:40:18,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 2928. [2021-12-21 15:40:18,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2646 states have (on average 1.3344671201814058) internal successors, (3531), 2671 states have internal predecessors, (3531), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-21 15:40:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 3912 transitions. [2021-12-21 15:40:18,737 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 3912 transitions. Word has length 93 [2021-12-21 15:40:18,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:18,737 INFO L470 AbstractCegarLoop]: Abstraction has 2928 states and 3912 transitions. [2021-12-21 15:40:18,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:18,737 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 3912 transitions. [2021-12-21 15:40:18,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-21 15:40:18,740 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:18,740 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:40:18,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 15:40:18,740 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:18,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:18,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1102442664, now seen corresponding path program 1 times [2021-12-21 15:40:18,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:18,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786904671] [2021-12-21 15:40:18,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:18,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:18,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:18,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-21 15:40:18,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 15:40:18,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:40:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 15:40:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:18,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:18,974 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 15:40:18,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:18,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786904671] [2021-12-21 15:40:18,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786904671] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:18,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:18,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:40:18,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558569441] [2021-12-21 15:40:18,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:18,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:40:18,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:18,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:40:18,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:40:18,978 INFO L87 Difference]: Start difference. First operand 2928 states and 3912 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:19,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:19,672 INFO L93 Difference]: Finished difference Result 5994 states and 7973 transitions. [2021-12-21 15:40:19,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:40:19,673 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 94 [2021-12-21 15:40:19,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:19,684 INFO L225 Difference]: With dead ends: 5994 [2021-12-21 15:40:19,684 INFO L226 Difference]: Without dead ends: 3075 [2021-12-21 15:40:19,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:40:19,690 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 804 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:19,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 2034 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:40:19,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2021-12-21 15:40:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 2931. [2021-12-21 15:40:19,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2931 states, 2649 states have (on average 1.332955832389581) internal successors, (3531), 2674 states have internal predecessors, (3531), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-21 15:40:19,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2931 states to 2931 states and 3912 transitions. [2021-12-21 15:40:19,806 INFO L78 Accepts]: Start accepts. Automaton has 2931 states and 3912 transitions. Word has length 94 [2021-12-21 15:40:19,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:19,806 INFO L470 AbstractCegarLoop]: Abstraction has 2931 states and 3912 transitions. [2021-12-21 15:40:19,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:19,807 INFO L276 IsEmpty]: Start isEmpty. Operand 2931 states and 3912 transitions. [2021-12-21 15:40:19,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-21 15:40:19,809 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:19,809 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:40:19,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 15:40:19,809 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:19,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:19,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1030544549, now seen corresponding path program 1 times [2021-12-21 15:40:19,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:19,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971314644] [2021-12-21 15:40:19,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:19,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:19,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-21 15:40:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 15:40:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-21 15:40:19,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 15:40:19,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:19,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 15:40:19,996 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:19,996 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971314644] [2021-12-21 15:40:19,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971314644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:19,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:19,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:40:19,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987852482] [2021-12-21 15:40:19,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:19,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:40:19,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:19,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:40:19,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:40:19,998 INFO L87 Difference]: Start difference. First operand 2931 states and 3912 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:20,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:20,656 INFO L93 Difference]: Finished difference Result 5994 states and 7967 transitions. [2021-12-21 15:40:20,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:40:20,657 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 95 [2021-12-21 15:40:20,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:20,667 INFO L225 Difference]: With dead ends: 5994 [2021-12-21 15:40:20,667 INFO L226 Difference]: Without dead ends: 3072 [2021-12-21 15:40:20,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:40:20,674 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 798 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:20,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 2034 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:40:20,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-12-21 15:40:20,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 2925. [2021-12-21 15:40:20,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2643 states have (on average 1.3325766174801361) internal successors, (3522), 2668 states have internal predecessors, (3522), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-21 15:40:20,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 3903 transitions. [2021-12-21 15:40:20,829 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 3903 transitions. Word has length 95 [2021-12-21 15:40:20,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:20,829 INFO L470 AbstractCegarLoop]: Abstraction has 2925 states and 3903 transitions. [2021-12-21 15:40:20,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:20,830 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 3903 transitions. [2021-12-21 15:40:20,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-21 15:40:20,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:20,832 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:40:20,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 15:40:20,833 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:20,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:20,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1961803849, now seen corresponding path program 1 times [2021-12-21 15:40:20,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:20,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778886033] [2021-12-21 15:40:20,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:20,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:20,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-21 15:40:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:20,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 15:40:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:20,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:20,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:40:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:40:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,015 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 15:40:21,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:21,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778886033] [2021-12-21 15:40:21,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778886033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:21,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:21,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:40:21,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713466174] [2021-12-21 15:40:21,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:21,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:40:21,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:21,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:40:21,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:40:21,017 INFO L87 Difference]: Start difference. First operand 2925 states and 3903 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:21,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:21,691 INFO L93 Difference]: Finished difference Result 5988 states and 7955 transitions. [2021-12-21 15:40:21,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:40:21,691 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 96 [2021-12-21 15:40:21,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:21,700 INFO L225 Difference]: With dead ends: 5988 [2021-12-21 15:40:21,701 INFO L226 Difference]: Without dead ends: 3072 [2021-12-21 15:40:21,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:40:21,706 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 800 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:21,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 2034 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:40:21,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-12-21 15:40:21,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 2928. [2021-12-21 15:40:21,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2928 states, 2646 states have (on average 1.3310657596371882) internal successors, (3522), 2671 states have internal predecessors, (3522), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-21 15:40:21,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 3903 transitions. [2021-12-21 15:40:21,824 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 3903 transitions. Word has length 96 [2021-12-21 15:40:21,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:21,824 INFO L470 AbstractCegarLoop]: Abstraction has 2928 states and 3903 transitions. [2021-12-21 15:40:21,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 5 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:21,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 3903 transitions. [2021-12-21 15:40:21,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-21 15:40:21,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:21,826 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:40:21,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 15:40:21,827 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:21,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:21,827 INFO L85 PathProgramCache]: Analyzing trace with hash -400625242, now seen corresponding path program 1 times [2021-12-21 15:40:21,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:21,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670529290] [2021-12-21 15:40:21,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:21,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-21 15:40:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-21 15:40:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-21 15:40:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-21 15:40:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 15:40:21,986 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:21,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670529290] [2021-12-21 15:40:21,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670529290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:21,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:21,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:40:21,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659789291] [2021-12-21 15:40:21,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:21,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:40:21,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:21,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:40:21,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:40:21,988 INFO L87 Difference]: Start difference. First operand 2928 states and 3903 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:22,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:22,647 INFO L93 Difference]: Finished difference Result 5988 states and 7949 transitions. [2021-12-21 15:40:22,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:40:22,647 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), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 97 [2021-12-21 15:40:22,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:22,656 INFO L225 Difference]: With dead ends: 5988 [2021-12-21 15:40:22,656 INFO L226 Difference]: Without dead ends: 3069 [2021-12-21 15:40:22,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:40:22,662 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 794 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:22,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 2034 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:40:22,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-12-21 15:40:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2922. [2021-12-21 15:40:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2922 states, 2640 states have (on average 1.330681818181818) internal successors, (3513), 2665 states have internal predecessors, (3513), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-21 15:40:22,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 3894 transitions. [2021-12-21 15:40:22,769 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 3894 transitions. Word has length 97 [2021-12-21 15:40:22,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:22,770 INFO L470 AbstractCegarLoop]: Abstraction has 2922 states and 3894 transitions. [2021-12-21 15:40:22,770 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), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:22,770 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 3894 transitions. [2021-12-21 15:40:22,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-21 15:40:22,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:22,772 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:40:22,772 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 15:40:22,773 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:22,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:22,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1958173396, now seen corresponding path program 1 times [2021-12-21 15:40:22,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:22,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787471921] [2021-12-21 15:40:22,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:22,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:22,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:22,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 15:40:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:22,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:22,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-21 15:40:22,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:22,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:22,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:22,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:40:22,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:22,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-21 15:40:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:22,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:22,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:22,921 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 15:40:22,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:22,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787471921] [2021-12-21 15:40:22,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787471921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:22,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:22,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:40:22,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350538833] [2021-12-21 15:40:22,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:22,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:40:22,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:22,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:40:22,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:40:22,923 INFO L87 Difference]: Start difference. First operand 2922 states and 3894 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:23,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:23,647 INFO L93 Difference]: Finished difference Result 5970 states and 7925 transitions. [2021-12-21 15:40:23,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:40:23,647 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 98 [2021-12-21 15:40:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:23,658 INFO L225 Difference]: With dead ends: 5970 [2021-12-21 15:40:23,658 INFO L226 Difference]: Without dead ends: 3057 [2021-12-21 15:40:23,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:40:23,663 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 787 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:23,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 2034 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 15:40:23,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2021-12-21 15:40:23,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 2919. [2021-12-21 15:40:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2919 states, 2637 states have (on average 1.329920364050057) internal successors, (3507), 2662 states have internal predecessors, (3507), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-21 15:40:23,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2919 states to 2919 states and 3888 transitions. [2021-12-21 15:40:23,776 INFO L78 Accepts]: Start accepts. Automaton has 2919 states and 3888 transitions. Word has length 98 [2021-12-21 15:40:23,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:23,776 INFO L470 AbstractCegarLoop]: Abstraction has 2919 states and 3888 transitions. [2021-12-21 15:40:23,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:23,777 INFO L276 IsEmpty]: Start isEmpty. Operand 2919 states and 3888 transitions. [2021-12-21 15:40:23,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-21 15:40:23,779 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:23,779 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:40:23,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 15:40:23,779 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:23,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:23,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2000823641, now seen corresponding path program 1 times [2021-12-21 15:40:23,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:23,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719199486] [2021-12-21 15:40:23,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:23,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 15:40:23,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 15:40:23,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-21 15:40:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 15:40:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:23,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:23,927 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 15:40:23,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:23,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719199486] [2021-12-21 15:40:23,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719199486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:23,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:23,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:40:23,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903868046] [2021-12-21 15:40:23,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:23,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:40:23,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:23,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:40:23,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:40:23,929 INFO L87 Difference]: Start difference. First operand 2919 states and 3888 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:24,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:24,622 INFO L93 Difference]: Finished difference Result 5964 states and 7913 transitions. [2021-12-21 15:40:24,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:40:24,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 99 [2021-12-21 15:40:24,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:24,630 INFO L225 Difference]: With dead ends: 5964 [2021-12-21 15:40:24,630 INFO L226 Difference]: Without dead ends: 3054 [2021-12-21 15:40:24,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:40:24,636 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 785 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 807 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:24,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 2034 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 15:40:24,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2021-12-21 15:40:24,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 2916. [2021-12-21 15:40:24,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 2634 states have (on average 1.3291571753986333) internal successors, (3501), 2659 states have internal predecessors, (3501), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-21 15:40:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 3882 transitions. [2021-12-21 15:40:24,752 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 3882 transitions. Word has length 99 [2021-12-21 15:40:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:24,752 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 3882 transitions. [2021-12-21 15:40:24,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 3882 transitions. [2021-12-21 15:40:24,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-21 15:40:24,755 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:24,756 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:40:24,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 15:40:24,756 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:24,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:24,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1968688333, now seen corresponding path program 1 times [2021-12-21 15:40:24,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:24,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531517027] [2021-12-21 15:40:24,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:24,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:24,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:24,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:24,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-21 15:40:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:24,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:24,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-21 15:40:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:24,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:24,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:24,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:40:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:24,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 15:40:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:24,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-21 15:40:24,935 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:24,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531517027] [2021-12-21 15:40:24,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531517027] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:24,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:24,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 15:40:24,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832361082] [2021-12-21 15:40:24,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:24,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 15:40:24,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:24,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 15:40:24,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:40:24,937 INFO L87 Difference]: Start difference. First operand 2916 states and 3882 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:25,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:25,638 INFO L93 Difference]: Finished difference Result 5958 states and 7901 transitions. [2021-12-21 15:40:25,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:40:25,639 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 100 [2021-12-21 15:40:25,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:25,645 INFO L225 Difference]: With dead ends: 5958 [2021-12-21 15:40:25,646 INFO L226 Difference]: Without dead ends: 3051 [2021-12-21 15:40:25,650 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:40:25,651 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 783 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 2034 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:25,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 2034 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 15:40:25,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2021-12-21 15:40:25,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2913. [2021-12-21 15:40:25,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2913 states, 2631 states have (on average 1.3283922462941846) internal successors, (3495), 2656 states have internal predecessors, (3495), 160 states have call successors, (160), 91 states have call predecessors, (160), 121 states have return successors, (221), 178 states have call predecessors, (221), 158 states have call successors, (221) [2021-12-21 15:40:25,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 3876 transitions. [2021-12-21 15:40:25,764 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 3876 transitions. Word has length 100 [2021-12-21 15:40:25,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:25,764 INFO L470 AbstractCegarLoop]: Abstraction has 2913 states and 3876 transitions. [2021-12-21 15:40:25,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:25,765 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 3876 transitions. [2021-12-21 15:40:25,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-21 15:40:25,767 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:25,767 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:40:25,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 15:40:25,767 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:25,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:25,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1466210216, now seen corresponding path program 1 times [2021-12-21 15:40:25,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:25,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064009562] [2021-12-21 15:40:25,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:25,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:25,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:25,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-21 15:40:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:25,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 15:40:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:25,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:25,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-21 15:40:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:25,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:25,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-21 15:40:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:25,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:40:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:25,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:25,997 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:40:25,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:25,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064009562] [2021-12-21 15:40:25,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064009562] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:40:25,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728499511] [2021-12-21 15:40:25,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:25,998 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:40:25,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:40:26,000 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:40:26,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:40:26,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:26,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-21 15:40:26,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:40:26,849 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 15:40:26,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:40:26,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728499511] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:26,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:40:26,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2021-12-21 15:40:26,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849175284] [2021-12-21 15:40:26,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:26,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:40:26,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:26,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:40:26,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-12-21 15:40:26,852 INFO L87 Difference]: Start difference. First operand 2913 states and 3876 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 15:40:26,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:26,971 INFO L93 Difference]: Finished difference Result 5809 states and 7733 transitions. [2021-12-21 15:40:26,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:40:26,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2021-12-21 15:40:26,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:26,978 INFO L225 Difference]: With dead ends: 5809 [2021-12-21 15:40:26,978 INFO L226 Difference]: Without dead ends: 2908 [2021-12-21 15:40:26,983 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2021-12-21 15:40:26,984 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 2 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:26,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 1878 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:40:26,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2021-12-21 15:40:27,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2908. [2021-12-21 15:40:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2628 states have (on average 1.3280060882800608) internal successors, (3490), 2652 states have internal predecessors, (3490), 159 states have call successors, (159), 90 states have call predecessors, (159), 120 states have return successors, (220), 177 states have call predecessors, (220), 157 states have call successors, (220) [2021-12-21 15:40:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 3869 transitions. [2021-12-21 15:40:27,104 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 3869 transitions. Word has length 101 [2021-12-21 15:40:27,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:27,104 INFO L470 AbstractCegarLoop]: Abstraction has 2908 states and 3869 transitions. [2021-12-21 15:40:27,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 15:40:27,104 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 3869 transitions. [2021-12-21 15:40:27,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-21 15:40:27,109 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:27,109 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:40:27,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-21 15:40:27,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-21 15:40:27,330 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:27,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:27,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1414387121, now seen corresponding path program 1 times [2021-12-21 15:40:27,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:27,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161885358] [2021-12-21 15:40:27,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:27,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:27,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:27,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:27,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:40:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:27,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 15:40:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:27,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:27,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:40:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:27,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:27,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 15:40:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:27,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 15:40:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:27,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:27,567 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:40:27,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:27,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161885358] [2021-12-21 15:40:27,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161885358] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:40:27,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475114593] [2021-12-21 15:40:27,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:27,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:40:27,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:40:27,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:40:27,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:40:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:28,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 2155 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-21 15:40:28,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:40:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:40:28,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:40:28,666 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-21 15:40:28,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475114593] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:40:28,667 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:40:28,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 23 [2021-12-21 15:40:28,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352014956] [2021-12-21 15:40:28,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:40:28,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-21 15:40:28,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:28,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-21 15:40:28,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2021-12-21 15:40:28,669 INFO L87 Difference]: Start difference. First operand 2908 states and 3869 transitions. Second operand has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 16 states have internal predecessors, (110), 5 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-21 15:40:30,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:30,384 INFO L93 Difference]: Finished difference Result 6365 states and 8552 transitions. [2021-12-21 15:40:30,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 15:40:30,385 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 16 states have internal predecessors, (110), 5 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) Word has length 103 [2021-12-21 15:40:30,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:30,392 INFO L225 Difference]: With dead ends: 6365 [2021-12-21 15:40:30,392 INFO L226 Difference]: Without dead ends: 3473 [2021-12-21 15:40:30,398 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=1394, Unknown=0, NotChecked=0, Total=1560 [2021-12-21 15:40:30,398 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 2069 mSDsluCounter, 11696 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 12427 SdHoareTripleChecker+Invalid, 1951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:30,398 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2069 Valid, 12427 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-21 15:40:30,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2021-12-21 15:40:30,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 2033. [2021-12-21 15:40:30,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2033 states, 1822 states have (on average 1.3117453347969266) internal successors, (2390), 1837 states have internal predecessors, (2390), 121 states have call successors, (121), 76 states have call predecessors, (121), 89 states have return successors, (153), 127 states have call predecessors, (153), 119 states have call successors, (153) [2021-12-21 15:40:30,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 2664 transitions. [2021-12-21 15:40:30,531 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 2664 transitions. Word has length 103 [2021-12-21 15:40:30,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:30,531 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 2664 transitions. [2021-12-21 15:40:30,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 4.782608695652174) internal successors, (110), 16 states have internal predecessors, (110), 5 states have call successors, (18), 5 states have call predecessors, (18), 7 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-21 15:40:30,532 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 2664 transitions. [2021-12-21 15:40:30,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-21 15:40:30,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:30,534 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 15:40:30,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-21 15:40:30,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:40:30,756 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:30,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:30,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1722415670, now seen corresponding path program 1 times [2021-12-21 15:40:30,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:30,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35084654] [2021-12-21 15:40:30,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:30,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:30,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-21 15:40:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:30,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-21 15:40:30,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:40:30,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:30,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:30,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 15:40:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:30,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-21 15:40:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:30,964 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-21 15:40:30,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:30,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35084654] [2021-12-21 15:40:30,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35084654] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:30,966 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:30,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:40:30,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405696934] [2021-12-21 15:40:30,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:30,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:40:30,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:30,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:40:30,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:40:30,968 INFO L87 Difference]: Start difference. First operand 2033 states and 2664 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:31,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:31,498 INFO L93 Difference]: Finished difference Result 2165 states and 2792 transitions. [2021-12-21 15:40:31,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 15:40:31,498 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 105 [2021-12-21 15:40:31,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:31,499 INFO L225 Difference]: With dead ends: 2165 [2021-12-21 15:40:31,499 INFO L226 Difference]: Without dead ends: 0 [2021-12-21 15:40:31,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:40:31,502 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 594 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 606 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:31,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [606 Valid, 1630 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 15:40:31,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-21 15:40:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-21 15:40:31,502 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 15:40:31,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-21 15:40:31,503 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2021-12-21 15:40:31,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:31,503 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-21 15:40:31,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 7 states have internal predecessors, (82), 5 states have call successors, (10), 5 states have call predecessors, (10), 2 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2021-12-21 15:40:31,503 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-21 15:40:31,503 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-21 15:40:31,505 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 15:40:31,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 15:40:31,507 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-21 15:41:00,979 WARN L227 SmtUtils]: Spent 5.47s on a formula simplification that was a NOOP. DAG size: 88 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)