./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 839c364b 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 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 17:11:52,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 17:11:52,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 17:11:53,004 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 17:11:53,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 17:11:53,006 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 17:11:53,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 17:11:53,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 17:11:53,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 17:11:53,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 17:11:53,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 17:11:53,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 17:11:53,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 17:11:53,013 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 17:11:53,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 17:11:53,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 17:11:53,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 17:11:53,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 17:11:53,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 17:11:53,020 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 17:11:53,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 17:11:53,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 17:11:53,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 17:11:53,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 17:11:53,027 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 17:11:53,027 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 17:11:53,028 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 17:11:53,028 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 17:11:53,029 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 17:11:53,030 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 17:11:53,030 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 17:11:53,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 17:11:53,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 17:11:53,032 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 17:11:53,033 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 17:11:53,033 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 17:11:53,034 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 17:11:53,034 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 17:11:53,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 17:11:53,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 17:11:53,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 17:11:53,037 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-14 17:11:53,055 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 17:11:53,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 17:11:53,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 17:11:53,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 17:11:53,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 17:11:53,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 17:11:53,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 17:11:53,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 17:11:53,058 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 17:11:53,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 17:11:53,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 17:11:53,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 17:11:53,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 17:11:53,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 17:11:53,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 17:11:53,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 17:11:53,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 17:11:53,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 17:11:53,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 17:11:53,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 17:11:53,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 17:11:53,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:11:53,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 17:11:53,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 17:11:53,062 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 17:11:53,062 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 17:11:53,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 17:11:53,063 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 17:11:53,063 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 17:11:53,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 17:11:53,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 17:11:53,064 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d9b118296c3c6ba241fa831bfdb5289a0072e9871a56ce58ee16beb68bb5aa55 [2021-12-14 17:11:53,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 17:11:53,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 17:11:53,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 17:11:53,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 17:11:53,305 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 17:11:53,306 INFO L432 ainManager$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 [2021-12-14 17:11:53,381 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c3adc9d/cc3c9979f9d147329235bea8065f1cf7/FLAGbbcfdeb4c [2021-12-14 17:11:53,991 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 17:11:53,992 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 [2021-12-14 17:11:54,044 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c3adc9d/cc3c9979f9d147329235bea8065f1cf7/FLAGbbcfdeb4c [2021-12-14 17:11:54,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95c3adc9d/cc3c9979f9d147329235bea8065f1cf7 [2021-12-14 17:11:54,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 17:11:54,188 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 17:11:54,191 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 17:11:54,191 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 17:11:54,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 17:11:54,195 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:11:54" (1/1) ... [2021-12-14 17:11:54,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e3a891d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:54, skipping insertion in model container [2021-12-14 17:11:54,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:11:54" (1/1) ... [2021-12-14 17:11:54,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 17:11:54,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 17:11:55,009 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] [2021-12-14 17:11:55,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:11:55,103 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 17:11:55,265 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] [2021-12-14 17:11:55,276 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 17:11:55,319 INFO L208 MainTranslator]: Completed translation [2021-12-14 17:11:55,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:55 WrapperNode [2021-12-14 17:11:55,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 17:11:55,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 17:11:55,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 17:11:55,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 17:11:55,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:55" (1/1) ... [2021-12-14 17:11:55,365 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:55" (1/1) ... [2021-12-14 17:11:55,447 INFO L137 Inliner]: procedures = 81, calls = 494, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 1672 [2021-12-14 17:11:55,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 17:11:55,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 17:11:55,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 17:11:55,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 17:11:55,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:55" (1/1) ... [2021-12-14 17:11:55,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:55" (1/1) ... [2021-12-14 17:11:55,469 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:55" (1/1) ... [2021-12-14 17:11:55,469 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:55" (1/1) ... [2021-12-14 17:11:55,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:55" (1/1) ... [2021-12-14 17:11:55,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:55" (1/1) ... [2021-12-14 17:11:55,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:55" (1/1) ... [2021-12-14 17:11:55,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 17:11:55,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 17:11:55,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 17:11:55,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 17:11:55,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:55" (1/1) ... [2021-12-14 17:11:55,594 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 17:11:55,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:11:55,615 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) [2021-12-14 17:11:55,641 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 [2021-12-14 17:11:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 17:11:55,657 INFO L130 BoogieDeclarations]: Found specification of procedure ir_init [2021-12-14 17:11:55,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_init [2021-12-14 17:11:55,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-14 17:11:55,658 INFO L130 BoogieDeclarations]: Found specification of procedure ir_exit [2021-12-14 17:11:55,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_exit [2021-12-14 17:11:55,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-14 17:11:55,658 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-14 17:11:55,658 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-14 17:11:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-14 17:11:55,659 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-14 17:11:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-14 17:11:55,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-14 17:11:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-14 17:11:55,659 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-12-14 17:11:55,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-12-14 17:11:55,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-14 17:11:55,660 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-14 17:11:55,660 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-14 17:11:55,661 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-14 17:11:55,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-14 17:11:55,661 INFO L130 BoogieDeclarations]: Found specification of procedure usb_serial_deregister [2021-12-14 17:11:55,661 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_serial_deregister [2021-12-14 17:11:55,661 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-12-14 17:11:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-12-14 17:11:55,662 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-14 17:11:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-14 17:11:55,662 INFO L130 BoogieDeclarations]: Found specification of procedure ir_xbof_change [2021-12-14 17:11:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ir_xbof_change [2021-12-14 17:11:55,662 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-12-14 17:11:55,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-12-14 17:11:55,662 INFO L130 BoogieDeclarations]: Found specification of procedure __kfifo_uint_must_check_helper [2021-12-14 17:11:55,663 INFO L138 BoogieDeclarations]: Found implementation of procedure __kfifo_uint_must_check_helper [2021-12-14 17:11:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 17:11:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-14 17:11:55,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 17:11:55,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 17:11:55,950 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 17:11:55,951 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 17:11:55,956 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 17:11:56,042 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume !false; [2021-12-14 17:11:56,043 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume false; [2021-12-14 17:11:56,150 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-12-14 17:11:56,162 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 17:11:56,166 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 17:11:56,178 WARN L815 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-14 17:11:56,983 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume !false; [2021-12-14 17:11:56,983 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##73: assume false; [2021-12-14 17:11:56,983 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##258: assume false; [2021-12-14 17:11:56,983 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##259: assume !false; [2021-12-14 17:11:56,984 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume !false; [2021-12-14 17:11:56,984 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##24: assume false; [2021-12-14 17:11:56,989 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 17:11:56,999 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 17:11:56,999 INFO L301 CfgBuilder]: Removed 23 assume(true) statements. [2021-12-14 17:11:57,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:11:57 BoogieIcfgContainer [2021-12-14 17:11:57,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 17:11:57,004 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 17:11:57,004 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 17:11:57,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 17:11:57,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:11:54" (1/3) ... [2021-12-14 17:11:57,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319c0795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:11:57, skipping insertion in model container [2021-12-14 17:11:57,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:11:55" (2/3) ... [2021-12-14 17:11:57,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@319c0795 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:11:57, skipping insertion in model container [2021-12-14 17:11:57,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:11:57" (3/3) ... [2021-12-14 17:11:57,010 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-serial-ir-usb.ko.cil.out.i [2021-12-14 17:11:57,014 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 17:11:57,015 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-14 17:11:57,063 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 17:11:57,069 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 [2021-12-14 17:11:57,069 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-14 17:11:57,086 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) [2021-12-14 17:11:57,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 17:11:57,091 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:11:57,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:11:57,092 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:11:57,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:11:57,096 INFO L85 PathProgramCache]: Analyzing trace with hash -248243768, now seen corresponding path program 1 times [2021-12-14 17:11:57,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:11:57,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855533415] [2021-12-14 17:11:57,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:11:57,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:11:57,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:57,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:11:57,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:57,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:11:57,665 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:11:57,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855533415] [2021-12-14 17:11:57,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855533415] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:11:57,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:11:57,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 17:11:57,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788482946] [2021-12-14 17:11:57,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:11:57,672 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:11:57,672 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:11:57,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:11:57,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:11:57,696 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) [2021-12-14 17:11:58,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:11:58,565 INFO L93 Difference]: Finished difference Result 845 states and 1261 transitions. [2021-12-14 17:11:58,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:11:58,568 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 [2021-12-14 17:11:58,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:11:58,581 INFO L225 Difference]: With dead ends: 845 [2021-12-14 17:11:58,582 INFO L226 Difference]: Without dead ends: 538 [2021-12-14 17:11:58,586 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 [2021-12-14 17:11:58,589 INFO L933 BasicCegarLoop]: 342 mSDtfsCounter, 460 mSDsluCounter, 949 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:11:58,589 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 1291 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 17:11:58,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2021-12-14 17:11:58,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 528. [2021-12-14 17:11:58,653 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) [2021-12-14 17:11:58,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 702 transitions. [2021-12-14 17:11:58,657 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 702 transitions. Word has length 18 [2021-12-14 17:11:58,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:11:58,657 INFO L470 AbstractCegarLoop]: Abstraction has 528 states and 702 transitions. [2021-12-14 17:11:58,658 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) [2021-12-14 17:11:58,658 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 702 transitions. [2021-12-14 17:11:58,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-14 17:11:58,659 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:11:58,659 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:11:58,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 17:11:58,660 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:11:58,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:11:58,661 INFO L85 PathProgramCache]: Analyzing trace with hash -835049782, now seen corresponding path program 1 times [2021-12-14 17:11:58,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:11:58,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876972176] [2021-12-14 17:11:58,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:11:58,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:11:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:11:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:11:58,843 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:11:58,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876972176] [2021-12-14 17:11:58,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876972176] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:11:58,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:11:58,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:11:58,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917949064] [2021-12-14 17:11:58,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:11:58,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:11:58,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:11:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:11:58,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:11:58,847 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) [2021-12-14 17:11:59,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:11:59,292 INFO L93 Difference]: Finished difference Result 1543 states and 2060 transitions. [2021-12-14 17:11:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 17:11:59,292 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 [2021-12-14 17:11:59,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:11:59,297 INFO L225 Difference]: With dead ends: 1543 [2021-12-14 17:11:59,297 INFO L226 Difference]: Without dead ends: 1033 [2021-12-14 17:11:59,299 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 [2021-12-14 17:11:59,301 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 [2021-12-14 17:11:59,302 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] [2021-12-14 17:11:59,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-12-14 17:11:59,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 1020. [2021-12-14 17:11:59,344 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) [2021-12-14 17:11:59,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1020 states to 1020 states and 1362 transitions. [2021-12-14 17:11:59,349 INFO L78 Accepts]: Start accepts. Automaton has 1020 states and 1362 transitions. Word has length 18 [2021-12-14 17:11:59,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:11:59,349 INFO L470 AbstractCegarLoop]: Abstraction has 1020 states and 1362 transitions. [2021-12-14 17:11:59,349 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) [2021-12-14 17:11:59,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1020 states and 1362 transitions. [2021-12-14 17:11:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-14 17:11:59,350 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:11:59,350 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 17:11:59,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 17:11:59,351 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:11:59,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:11:59,352 INFO L85 PathProgramCache]: Analyzing trace with hash -116851219, now seen corresponding path program 1 times [2021-12-14 17:11:59,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:11:59,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497146619] [2021-12-14 17:11:59,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:11:59,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:11:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:59,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:11:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:11:59,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:11:59,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497146619] [2021-12-14 17:11:59,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497146619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:11:59,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:11:59,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 17:11:59,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216065056] [2021-12-14 17:11:59,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:11:59,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-14 17:11:59,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:11:59,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-14 17:11:59,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-14 17:11:59,524 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) [2021-12-14 17:11:59,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:11:59,795 INFO L93 Difference]: Finished difference Result 1022 states and 1363 transitions. [2021-12-14 17:11:59,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-14 17:11:59,795 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 [2021-12-14 17:11:59,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:11:59,800 INFO L225 Difference]: With dead ends: 1022 [2021-12-14 17:11:59,800 INFO L226 Difference]: Without dead ends: 1001 [2021-12-14 17:11:59,801 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 [2021-12-14 17:11:59,802 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 421 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 [2021-12-14 17:11:59,802 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] [2021-12-14 17:11:59,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2021-12-14 17:11:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 1001. [2021-12-14 17:11:59,834 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) [2021-12-14 17:11:59,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1336 transitions. [2021-12-14 17:11:59,838 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1336 transitions. Word has length 19 [2021-12-14 17:11:59,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:11:59,838 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1336 transitions. [2021-12-14 17:11:59,838 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) [2021-12-14 17:11:59,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1336 transitions. [2021-12-14 17:11:59,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-14 17:11:59,843 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:11:59,844 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] [2021-12-14 17:11:59,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 17:11:59,844 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:11:59,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:11:59,845 INFO L85 PathProgramCache]: Analyzing trace with hash -470649452, now seen corresponding path program 1 times [2021-12-14 17:11:59,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:11:59,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467093902] [2021-12-14 17:11:59,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:11:59,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:11:59,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:11:59,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:11:59,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:00,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:00,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 17:12:00,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:00,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:00,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:12:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:00,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:00,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:12:00,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:00,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467093902] [2021-12-14 17:12:00,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467093902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:00,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:00,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:12:00,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595089158] [2021-12-14 17:12:00,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:00,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:12:00,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:00,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:12:00,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:12:00,043 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) [2021-12-14 17:12:00,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:00,831 INFO L93 Difference]: Finished difference Result 2037 states and 2716 transitions. [2021-12-14 17:12:00,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:12:00,832 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 [2021-12-14 17:12:00,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:00,837 INFO L225 Difference]: With dead ends: 2037 [2021-12-14 17:12:00,837 INFO L226 Difference]: Without dead ends: 1057 [2021-12-14 17:12:00,841 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 [2021-12-14 17:12:00,845 INFO L933 BasicCegarLoop]: 328 mSDtfsCounter, 573 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:00,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 1470 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 17:12:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2021-12-14 17:12:00,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1001. [2021-12-14 17:12:00,887 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) [2021-12-14 17:12:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1334 transitions. [2021-12-14 17:12:00,892 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1334 transitions. Word has length 76 [2021-12-14 17:12:00,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:00,893 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1334 transitions. [2021-12-14 17:12:00,893 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) [2021-12-14 17:12:00,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1334 transitions. [2021-12-14 17:12:00,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-14 17:12:00,897 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:00,898 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] [2021-12-14 17:12:00,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 17:12:00,898 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:00,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash -26748778, now seen corresponding path program 1 times [2021-12-14 17:12:00,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:00,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331568377] [2021-12-14 17:12:00,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:00,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:01,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:01,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 17:12:01,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:01,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:12:01,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:01,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:12:01,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:01,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331568377] [2021-12-14 17:12:01,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331568377] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:01,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:01,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 17:12:01,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211746498] [2021-12-14 17:12:01,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:01,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-14 17:12:01,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:01,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-14 17:12:01,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-14 17:12:01,105 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) [2021-12-14 17:12:01,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:01,948 INFO L93 Difference]: Finished difference Result 2033 states and 2706 transitions. [2021-12-14 17:12:01,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 17:12:01,949 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 [2021-12-14 17:12:01,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:01,955 INFO L225 Difference]: With dead ends: 2033 [2021-12-14 17:12:01,955 INFO L226 Difference]: Without dead ends: 1053 [2021-12-14 17:12:01,957 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 [2021-12-14 17:12:01,958 INFO L933 BasicCegarLoop]: 330 mSDtfsCounter, 564 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:01,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 1476 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 17:12:01,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2021-12-14 17:12:02,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 997. [2021-12-14 17:12:02,003 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) [2021-12-14 17:12:02,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1326 transitions. [2021-12-14 17:12:02,007 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1326 transitions. Word has length 76 [2021-12-14 17:12:02,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:02,008 INFO L470 AbstractCegarLoop]: Abstraction has 997 states and 1326 transitions. [2021-12-14 17:12:02,009 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) [2021-12-14 17:12:02,009 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1326 transitions. [2021-12-14 17:12:02,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-14 17:12:02,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:02,012 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] [2021-12-14 17:12:02,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 17:12:02,012 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:02,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:02,013 INFO L85 PathProgramCache]: Analyzing trace with hash -481270382, now seen corresponding path program 1 times [2021-12-14 17:12:02,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:02,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767729109] [2021-12-14 17:12:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:02,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:02,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:02,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:02,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:02,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 17:12:02,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:02,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:02,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:12:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:02,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:02,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:02,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:12:02,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:02,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767729109] [2021-12-14 17:12:02,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767729109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:02,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:02,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:12:02,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142012507] [2021-12-14 17:12:02,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:02,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:12:02,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:02,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:12:02,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:12:02,200 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) [2021-12-14 17:12:02,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:02,847 INFO L93 Difference]: Finished difference Result 2989 states and 4048 transitions. [2021-12-14 17:12:02,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 17:12:02,848 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 [2021-12-14 17:12:02,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:02,856 INFO L225 Difference]: With dead ends: 2989 [2021-12-14 17:12:02,856 INFO L226 Difference]: Without dead ends: 2013 [2021-12-14 17:12:02,858 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 [2021-12-14 17:12:02,859 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 654 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:02,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [666 Valid, 2823 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 17:12:02,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2021-12-14 17:12:02,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 973. [2021-12-14 17:12:02,906 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) [2021-12-14 17:12:02,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1290 transitions. [2021-12-14 17:12:02,910 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1290 transitions. Word has length 76 [2021-12-14 17:12:02,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:02,910 INFO L470 AbstractCegarLoop]: Abstraction has 973 states and 1290 transitions. [2021-12-14 17:12:02,910 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) [2021-12-14 17:12:02,910 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1290 transitions. [2021-12-14 17:12:02,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 17:12:02,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:02,912 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] [2021-12-14 17:12:02,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 17:12:02,912 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:02,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:02,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1149604904, now seen corresponding path program 1 times [2021-12-14 17:12:02,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:02,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113286025] [2021-12-14 17:12:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:02,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 17:12:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:12:03,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:03,146 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:12:03,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:03,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113286025] [2021-12-14 17:12:03,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113286025] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:03,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:03,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:12:03,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014151155] [2021-12-14 17:12:03,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:03,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:12:03,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:03,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:12:03,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:12:03,152 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) [2021-12-14 17:12:03,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:03,849 INFO L93 Difference]: Finished difference Result 2228 states and 3006 transitions. [2021-12-14 17:12:03,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:12:03,849 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 [2021-12-14 17:12:03,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:03,858 INFO L225 Difference]: With dead ends: 2228 [2021-12-14 17:12:03,858 INFO L226 Difference]: Without dead ends: 1727 [2021-12-14 17:12:03,859 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 [2021-12-14 17:12:03,861 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 389 mSDsluCounter, 3495 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 4129 SdHoareTripleChecker+Invalid, 618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:03,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 4129 Invalid, 618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 17:12:03,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2021-12-14 17:12:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1001. [2021-12-14 17:12:03,907 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) [2021-12-14 17:12:03,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1326 transitions. [2021-12-14 17:12:03,911 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1326 transitions. Word has length 73 [2021-12-14 17:12:03,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:03,911 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1326 transitions. [2021-12-14 17:12:03,911 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) [2021-12-14 17:12:03,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1326 transitions. [2021-12-14 17:12:03,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 17:12:03,913 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:03,913 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] [2021-12-14 17:12:03,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 17:12:03,913 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:03,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:03,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1404341449, now seen corresponding path program 1 times [2021-12-14 17:12:03,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:03,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479532381] [2021-12-14 17:12:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:03,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:04,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:04,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:04,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 17:12:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:04,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:04,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:12:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:04,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:04,110 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 17:12:04,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:04,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479532381] [2021-12-14 17:12:04,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479532381] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:04,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:04,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 17:12:04,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899918454] [2021-12-14 17:12:04,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:04,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 17:12:04,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:04,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 17:12:04,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:12:04,112 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) [2021-12-14 17:12:05,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:05,136 INFO L93 Difference]: Finished difference Result 2242 states and 3020 transitions. [2021-12-14 17:12:05,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 17:12:05,137 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 [2021-12-14 17:12:05,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:05,143 INFO L225 Difference]: With dead ends: 2242 [2021-12-14 17:12:05,144 INFO L226 Difference]: Without dead ends: 1727 [2021-12-14 17:12:05,145 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 [2021-12-14 17:12:05,146 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 1004 mSDsluCounter, 5205 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s 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, 0.8s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:05,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1015 Valid, 5944 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-14 17:12:05,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2021-12-14 17:12:05,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1001. [2021-12-14 17:12:05,196 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) [2021-12-14 17:12:05,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1001 states to 1001 states and 1324 transitions. [2021-12-14 17:12:05,200 INFO L78 Accepts]: Start accepts. Automaton has 1001 states and 1324 transitions. Word has length 73 [2021-12-14 17:12:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:05,200 INFO L470 AbstractCegarLoop]: Abstraction has 1001 states and 1324 transitions. [2021-12-14 17:12:05,200 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) [2021-12-14 17:12:05,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1001 states and 1324 transitions. [2021-12-14 17:12:05,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-14 17:12:05,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:05,202 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] [2021-12-14 17:12:05,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 17:12:05,202 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:05,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:05,203 INFO L85 PathProgramCache]: Analyzing trace with hash -264483951, now seen corresponding path program 1 times [2021-12-14 17:12:05,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:05,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512517074] [2021-12-14 17:12:05,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:05,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:05,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:05,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 17:12:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:05,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:05,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:12:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:05,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:05,405 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:12:05,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:05,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512517074] [2021-12-14 17:12:05,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512517074] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:05,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:05,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 17:12:05,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182676577] [2021-12-14 17:12:05,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:05,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:12:05,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:05,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:12:05,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 17:12:05,408 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) [2021-12-14 17:12:06,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:06,148 INFO L93 Difference]: Finished difference Result 1540 states and 2037 transitions. [2021-12-14 17:12:06,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-14 17:12:06,149 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 [2021-12-14 17:12:06,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:06,155 INFO L225 Difference]: With dead ends: 1540 [2021-12-14 17:12:06,155 INFO L226 Difference]: Without dead ends: 1537 [2021-12-14 17:12:06,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-14 17:12:06,156 INFO L933 BasicCegarLoop]: 698 mSDtfsCounter, 980 mSDsluCounter, 1625 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:06,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1006 Valid, 2323 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 17:12:06,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1537 states. [2021-12-14 17:12:06,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1537 to 1499. [2021-12-14 17:12:06,217 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) [2021-12-14 17:12:06,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1499 states to 1499 states and 1992 transitions. [2021-12-14 17:12:06,222 INFO L78 Accepts]: Start accepts. Automaton has 1499 states and 1992 transitions. Word has length 76 [2021-12-14 17:12:06,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:06,222 INFO L470 AbstractCegarLoop]: Abstraction has 1499 states and 1992 transitions. [2021-12-14 17:12:06,222 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) [2021-12-14 17:12:06,223 INFO L276 IsEmpty]: Start isEmpty. Operand 1499 states and 1992 transitions. [2021-12-14 17:12:06,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-14 17:12:06,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:06,225 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] [2021-12-14 17:12:06,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 17:12:06,225 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:06,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:06,226 INFO L85 PathProgramCache]: Analyzing trace with hash 299119202, now seen corresponding path program 1 times [2021-12-14 17:12:06,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:06,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659359623] [2021-12-14 17:12:06,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:06,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:06,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:06,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:06,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:06,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-14 17:12:06,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:06,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:06,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-14 17:12:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:06,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:06,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:06,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-14 17:12:06,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:06,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-12-14 17:12:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:06,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:06,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:06,449 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:12:06,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:06,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659359623] [2021-12-14 17:12:06,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659359623] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:06,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:06,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:12:06,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058950677] [2021-12-14 17:12:06,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:06,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:12:06,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:06,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:12:06,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:12:06,451 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) [2021-12-14 17:12:07,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:07,225 INFO L93 Difference]: Finished difference Result 4547 states and 6038 transitions. [2021-12-14 17:12:07,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:12:07,226 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 [2021-12-14 17:12:07,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:07,237 INFO L225 Difference]: With dead ends: 4547 [2021-12-14 17:12:07,238 INFO L226 Difference]: Without dead ends: 3057 [2021-12-14 17:12:07,242 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 [2021-12-14 17:12:07,243 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 [2021-12-14 17:12:07,244 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] [2021-12-14 17:12:07,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2021-12-14 17:12:07,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 2928. [2021-12-14 17:12:07,422 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) [2021-12-14 17:12:07,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 3912 transitions. [2021-12-14 17:12:07,428 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 3912 transitions. Word has length 93 [2021-12-14 17:12:07,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:07,428 INFO L470 AbstractCegarLoop]: Abstraction has 2928 states and 3912 transitions. [2021-12-14 17:12:07,428 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) [2021-12-14 17:12:07,428 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 3912 transitions. [2021-12-14 17:12:07,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-14 17:12:07,432 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:07,432 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] [2021-12-14 17:12:07,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 17:12:07,433 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:07,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:07,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1102442664, now seen corresponding path program 1 times [2021-12-14 17:12:07,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:07,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884293545] [2021-12-14 17:12:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:07,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:07,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:07,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:07,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-14 17:12:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:07,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:07,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:07,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-14 17:12:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:07,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:07,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:07,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-14 17:12:07,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:07,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-14 17:12:07,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:07,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:12:07,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:07,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884293545] [2021-12-14 17:12:07,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884293545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:07,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:07,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:12:07,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238660994] [2021-12-14 17:12:07,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:07,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:12:07,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:07,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:12:07,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:12:07,648 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) [2021-12-14 17:12:08,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:08,467 INFO L93 Difference]: Finished difference Result 5994 states and 7973 transitions. [2021-12-14 17:12:08,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:12:08,468 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 [2021-12-14 17:12:08,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:08,480 INFO L225 Difference]: With dead ends: 5994 [2021-12-14 17:12:08,480 INFO L226 Difference]: Without dead ends: 3075 [2021-12-14 17:12:08,485 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 [2021-12-14 17:12:08,486 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 804 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:08,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [826 Valid, 2034 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 17:12:08,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3075 states. [2021-12-14 17:12:08,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3075 to 2931. [2021-12-14 17:12:08,610 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) [2021-12-14 17:12:08,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2931 states to 2931 states and 3912 transitions. [2021-12-14 17:12:08,616 INFO L78 Accepts]: Start accepts. Automaton has 2931 states and 3912 transitions. Word has length 94 [2021-12-14 17:12:08,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:08,616 INFO L470 AbstractCegarLoop]: Abstraction has 2931 states and 3912 transitions. [2021-12-14 17:12:08,616 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) [2021-12-14 17:12:08,617 INFO L276 IsEmpty]: Start isEmpty. Operand 2931 states and 3912 transitions. [2021-12-14 17:12:08,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-14 17:12:08,619 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:08,619 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] [2021-12-14 17:12:08,620 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 17:12:08,620 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:08,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:08,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1030544549, now seen corresponding path program 1 times [2021-12-14 17:12:08,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:08,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992423262] [2021-12-14 17:12:08,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:08,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:08,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:08,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:08,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:08,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-14 17:12:08,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:08,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:08,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:08,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-14 17:12:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:08,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:08,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-14 17:12:08,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:08,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-14 17:12:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:08,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:12:08,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:08,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992423262] [2021-12-14 17:12:08,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992423262] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:08,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:08,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:12:08,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521843048] [2021-12-14 17:12:08,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:08,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:12:08,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:08,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:12:08,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:12:08,892 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) [2021-12-14 17:12:09,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:09,704 INFO L93 Difference]: Finished difference Result 5994 states and 7967 transitions. [2021-12-14 17:12:09,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:12:09,705 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 [2021-12-14 17:12:09,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:09,722 INFO L225 Difference]: With dead ends: 5994 [2021-12-14 17:12:09,722 INFO L226 Difference]: Without dead ends: 3072 [2021-12-14 17:12:09,728 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 [2021-12-14 17:12:09,729 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 798 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:09,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 2034 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 17:12:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-12-14 17:12:09,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 2925. [2021-12-14 17:12:09,876 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) [2021-12-14 17:12:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 3903 transitions. [2021-12-14 17:12:09,883 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 3903 transitions. Word has length 95 [2021-12-14 17:12:09,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:09,883 INFO L470 AbstractCegarLoop]: Abstraction has 2925 states and 3903 transitions. [2021-12-14 17:12:09,884 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) [2021-12-14 17:12:09,884 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 3903 transitions. [2021-12-14 17:12:09,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-14 17:12:09,886 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:09,886 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] [2021-12-14 17:12:09,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 17:12:09,887 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:09,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:09,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1961803849, now seen corresponding path program 1 times [2021-12-14 17:12:09,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:09,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095470133] [2021-12-14 17:12:09,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:09,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:10,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:10,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:10,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-14 17:12:10,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:10,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:10,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-14 17:12:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:10,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:10,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-14 17:12:10,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:10,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-14 17:12:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:10,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:10,086 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:12:10,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:10,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095470133] [2021-12-14 17:12:10,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095470133] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:10,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:10,087 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:12:10,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111601448] [2021-12-14 17:12:10,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:10,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:12:10,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:10,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:12:10,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:12:10,088 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) [2021-12-14 17:12:10,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:10,869 INFO L93 Difference]: Finished difference Result 5988 states and 7955 transitions. [2021-12-14 17:12:10,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:12:10,870 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 [2021-12-14 17:12:10,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:10,879 INFO L225 Difference]: With dead ends: 5988 [2021-12-14 17:12:10,880 INFO L226 Difference]: Without dead ends: 3072 [2021-12-14 17:12:10,884 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 [2021-12-14 17:12:10,885 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 800 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:10,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 2034 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 17:12:10,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2021-12-14 17:12:11,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 2928. [2021-12-14 17:12:11,021 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) [2021-12-14 17:12:11,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2928 states to 2928 states and 3903 transitions. [2021-12-14 17:12:11,027 INFO L78 Accepts]: Start accepts. Automaton has 2928 states and 3903 transitions. Word has length 96 [2021-12-14 17:12:11,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:11,027 INFO L470 AbstractCegarLoop]: Abstraction has 2928 states and 3903 transitions. [2021-12-14 17:12:11,028 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) [2021-12-14 17:12:11,028 INFO L276 IsEmpty]: Start isEmpty. Operand 2928 states and 3903 transitions. [2021-12-14 17:12:11,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-14 17:12:11,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:11,030 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] [2021-12-14 17:12:11,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 17:12:11,031 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:11,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:11,031 INFO L85 PathProgramCache]: Analyzing trace with hash -400625242, now seen corresponding path program 1 times [2021-12-14 17:12:11,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:11,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620060291] [2021-12-14 17:12:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:11,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:11,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:11,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:11,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:11,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:11,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-14 17:12:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:11,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:11,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:11,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-14 17:12:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:11,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:11,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-14 17:12:11,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:11,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-14 17:12:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:11,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:11,224 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:12:11,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:11,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620060291] [2021-12-14 17:12:11,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620060291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:11,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:11,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:12:11,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462247115] [2021-12-14 17:12:11,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:11,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:12:11,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:11,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:12:11,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:12:11,227 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) [2021-12-14 17:12:12,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:12,022 INFO L93 Difference]: Finished difference Result 5988 states and 7949 transitions. [2021-12-14 17:12:12,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:12:12,022 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 [2021-12-14 17:12:12,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:12,034 INFO L225 Difference]: With dead ends: 5988 [2021-12-14 17:12:12,034 INFO L226 Difference]: Without dead ends: 3069 [2021-12-14 17:12:12,039 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 [2021-12-14 17:12:12,040 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 794 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:12,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 2034 Invalid, 616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 17:12:12,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2021-12-14 17:12:12,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2922. [2021-12-14 17:12:12,161 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) [2021-12-14 17:12:12,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2922 states to 2922 states and 3894 transitions. [2021-12-14 17:12:12,167 INFO L78 Accepts]: Start accepts. Automaton has 2922 states and 3894 transitions. Word has length 97 [2021-12-14 17:12:12,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:12,167 INFO L470 AbstractCegarLoop]: Abstraction has 2922 states and 3894 transitions. [2021-12-14 17:12:12,167 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) [2021-12-14 17:12:12,167 INFO L276 IsEmpty]: Start isEmpty. Operand 2922 states and 3894 transitions. [2021-12-14 17:12:12,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-14 17:12:12,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:12,170 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] [2021-12-14 17:12:12,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 17:12:12,170 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:12,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:12,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1958173396, now seen corresponding path program 1 times [2021-12-14 17:12:12,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:12,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049017447] [2021-12-14 17:12:12,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:12,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:12,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-14 17:12:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-14 17:12:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-14 17:12:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-14 17:12:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:12,384 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:12:12,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:12,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049017447] [2021-12-14 17:12:12,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049017447] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:12,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:12,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:12:12,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856316815] [2021-12-14 17:12:12,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:12,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:12:12,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:12,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:12:12,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:12:12,398 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) [2021-12-14 17:12:13,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:13,150 INFO L93 Difference]: Finished difference Result 5970 states and 7925 transitions. [2021-12-14 17:12:13,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:12:13,151 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 [2021-12-14 17:12:13,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:13,161 INFO L225 Difference]: With dead ends: 5970 [2021-12-14 17:12:13,161 INFO L226 Difference]: Without dead ends: 3057 [2021-12-14 17:12:13,166 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 [2021-12-14 17:12:13,167 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 [2021-12-14 17:12:13,167 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] [2021-12-14 17:12:13,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2021-12-14 17:12:13,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 2919. [2021-12-14 17:12:13,286 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) [2021-12-14 17:12:13,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2919 states to 2919 states and 3888 transitions. [2021-12-14 17:12:13,292 INFO L78 Accepts]: Start accepts. Automaton has 2919 states and 3888 transitions. Word has length 98 [2021-12-14 17:12:13,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:13,292 INFO L470 AbstractCegarLoop]: Abstraction has 2919 states and 3888 transitions. [2021-12-14 17:12:13,292 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) [2021-12-14 17:12:13,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2919 states and 3888 transitions. [2021-12-14 17:12:13,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-14 17:12:13,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:13,295 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] [2021-12-14 17:12:13,295 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 17:12:13,295 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:13,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:13,296 INFO L85 PathProgramCache]: Analyzing trace with hash -2000823641, now seen corresponding path program 1 times [2021-12-14 17:12:13,296 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:13,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141731265] [2021-12-14 17:12:13,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:13,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:13,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:13,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:13,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:13,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:13,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-14 17:12:13,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:13,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:13,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-14 17:12:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:13,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:13,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-14 17:12:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:13,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-14 17:12:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:13,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:13,503 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:12:13,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:13,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141731265] [2021-12-14 17:12:13,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141731265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:13,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:13,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:12:13,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789599781] [2021-12-14 17:12:13,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:13,506 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:12:13,506 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:13,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:12:13,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:12:13,506 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) [2021-12-14 17:12:14,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:14,315 INFO L93 Difference]: Finished difference Result 5964 states and 7913 transitions. [2021-12-14 17:12:14,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:12:14,316 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 [2021-12-14 17:12:14,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:14,336 INFO L225 Difference]: With dead ends: 5964 [2021-12-14 17:12:14,337 INFO L226 Difference]: Without dead ends: 3054 [2021-12-14 17:12:14,342 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 [2021-12-14 17:12:14,343 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 785 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:14,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [807 Valid, 2034 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 17:12:14,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3054 states. [2021-12-14 17:12:14,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3054 to 2916. [2021-12-14 17:12:14,460 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) [2021-12-14 17:12:14,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 3882 transitions. [2021-12-14 17:12:14,466 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 3882 transitions. Word has length 99 [2021-12-14 17:12:14,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:14,466 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 3882 transitions. [2021-12-14 17:12:14,467 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) [2021-12-14 17:12:14,467 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 3882 transitions. [2021-12-14 17:12:14,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-14 17:12:14,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:14,469 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] [2021-12-14 17:12:14,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 17:12:14,470 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:14,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:14,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1968688333, now seen corresponding path program 1 times [2021-12-14 17:12:14,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:14,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812271950] [2021-12-14 17:12:14,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:14,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:14,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:14,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:14,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:14,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-14 17:12:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:14,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:14,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-14 17:12:14,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:14,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:14,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:14,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-14 17:12:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:14,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-14 17:12:14,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:14,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-14 17:12:14,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:14,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812271950] [2021-12-14 17:12:14,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812271950] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:14,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:14,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 17:12:14,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652576480] [2021-12-14 17:12:14,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:14,703 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 17:12:14,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:14,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 17:12:14,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 17:12:14,703 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) [2021-12-14 17:12:15,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:15,473 INFO L93 Difference]: Finished difference Result 5958 states and 7901 transitions. [2021-12-14 17:12:15,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 17:12:15,473 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 [2021-12-14 17:12:15,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:15,481 INFO L225 Difference]: With dead ends: 5958 [2021-12-14 17:12:15,481 INFO L226 Difference]: Without dead ends: 3051 [2021-12-14 17:12:15,486 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 [2021-12-14 17:12:15,489 INFO L933 BasicCegarLoop]: 367 mSDtfsCounter, 783 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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 [2021-12-14 17:12:15,489 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] [2021-12-14 17:12:15,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2021-12-14 17:12:15,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2913. [2021-12-14 17:12:15,641 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) [2021-12-14 17:12:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 3876 transitions. [2021-12-14 17:12:15,646 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 3876 transitions. Word has length 100 [2021-12-14 17:12:15,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:15,647 INFO L470 AbstractCegarLoop]: Abstraction has 2913 states and 3876 transitions. [2021-12-14 17:12:15,647 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) [2021-12-14 17:12:15,647 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 3876 transitions. [2021-12-14 17:12:15,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-14 17:12:15,650 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:15,650 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] [2021-12-14 17:12:15,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 17:12:15,650 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:15,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:15,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1466210216, now seen corresponding path program 1 times [2021-12-14 17:12:15,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:15,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065412392] [2021-12-14 17:12:15,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:15,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:15,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:15,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-14 17:12:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:15,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-14 17:12:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:15,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:15,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-14 17:12:15,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:15,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:15,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-14 17:12:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:15,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-14 17:12:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:15,906 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:12:15,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:15,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065412392] [2021-12-14 17:12:15,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065412392] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:12:15,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922685291] [2021-12-14 17:12:15,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:15,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:12:15,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:12:15,909 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) [2021-12-14 17:12:15,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 17:12:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:16,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 2108 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-14 17:12:16,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:12:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-14 17:12:16,841 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-14 17:12:16,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922685291] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:16,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-14 17:12:16,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2021-12-14 17:12:16,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145815048] [2021-12-14 17:12:16,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:16,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 17:12:16,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:16,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 17:12:16,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2021-12-14 17:12:16,843 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) [2021-12-14 17:12:17,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:17,000 INFO L93 Difference]: Finished difference Result 5809 states and 7733 transitions. [2021-12-14 17:12:17,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-14 17:12:17,000 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 [2021-12-14 17:12:17,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:17,008 INFO L225 Difference]: With dead ends: 5809 [2021-12-14 17:12:17,008 INFO L226 Difference]: Without dead ends: 2908 [2021-12-14 17:12:17,013 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 [2021-12-14 17:12:17,013 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 [2021-12-14 17:12:17,014 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] [2021-12-14 17:12:17,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2021-12-14 17:12:17,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2908. [2021-12-14 17:12:17,190 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) [2021-12-14 17:12:17,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 3869 transitions. [2021-12-14 17:12:17,198 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 3869 transitions. Word has length 101 [2021-12-14 17:12:17,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:17,198 INFO L470 AbstractCegarLoop]: Abstraction has 2908 states and 3869 transitions. [2021-12-14 17:12:17,199 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) [2021-12-14 17:12:17,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 3869 transitions. [2021-12-14 17:12:17,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-14 17:12:17,202 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:17,202 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] [2021-12-14 17:12:17,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-14 17:12:17,428 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 [2021-12-14 17:12:17,428 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:17,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:17,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1414387121, now seen corresponding path program 1 times [2021-12-14 17:12:17,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:17,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775340485] [2021-12-14 17:12:17,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:17,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:17,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:17,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:17,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:17,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:12:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:17,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 17:12:17,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:17,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:17,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:12:17,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:17,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:17,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:12:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:17,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-14 17:12:17,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:17,693 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:12:17,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:17,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775340485] [2021-12-14 17:12:17,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775340485] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 17:12:17,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163753942] [2021-12-14 17:12:17,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:17,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 17:12:17,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 17:12:17,696 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) [2021-12-14 17:12:17,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-14 17:12:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:18,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 2155 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-14 17:12:18,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 17:12:18,685 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:12:18,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 17:12:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-14 17:12:18,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163753942] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 17:12:18,952 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 17:12:18,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 23 [2021-12-14 17:12:18,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415904955] [2021-12-14 17:12:18,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 17:12:18,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-14 17:12:18,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:18,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-14 17:12:18,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2021-12-14 17:12:18,954 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) [2021-12-14 17:12:20,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:20,839 INFO L93 Difference]: Finished difference Result 6365 states and 8552 transitions. [2021-12-14 17:12:20,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-14 17:12:20,840 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 [2021-12-14 17:12:20,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:20,848 INFO L225 Difference]: With dead ends: 6365 [2021-12-14 17:12:20,848 INFO L226 Difference]: Without dead ends: 3473 [2021-12-14 17:12:20,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=1394, Unknown=0, NotChecked=0, Total=1560 [2021-12-14 17:12:20,854 INFO L933 BasicCegarLoop]: 731 mSDtfsCounter, 2069 mSDsluCounter, 11696 mSDsCounter, 0 mSdLazyCounter, 1724 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2021-12-14 17:12:20,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2069 Valid, 12427 Invalid, 1951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1724 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-14 17:12:20,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2021-12-14 17:12:20,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 2033. [2021-12-14 17:12:20,945 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) [2021-12-14 17:12:20,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2033 states to 2033 states and 2664 transitions. [2021-12-14 17:12:20,949 INFO L78 Accepts]: Start accepts. Automaton has 2033 states and 2664 transitions. Word has length 103 [2021-12-14 17:12:20,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:20,950 INFO L470 AbstractCegarLoop]: Abstraction has 2033 states and 2664 transitions. [2021-12-14 17:12:20,950 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) [2021-12-14 17:12:20,950 INFO L276 IsEmpty]: Start isEmpty. Operand 2033 states and 2664 transitions. [2021-12-14 17:12:20,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-14 17:12:20,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 17:12:20,955 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] [2021-12-14 17:12:20,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-14 17:12:21,171 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 [2021-12-14 17:12:21,171 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-14 17:12:21,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 17:12:21,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1722415670, now seen corresponding path program 1 times [2021-12-14 17:12:21,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 17:12:21,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106650121] [2021-12-14 17:12:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 17:12:21,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 17:12:21,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:21,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-14 17:12:21,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:21,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-14 17:12:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:21,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-14 17:12:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:21,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-14 17:12:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:21,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-14 17:12:21,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:21,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-14 17:12:21,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:21,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-14 17:12:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:21,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-14 17:12:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:21,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-14 17:12:21,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 17:12:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-14 17:12:21,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 17:12:21,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106650121] [2021-12-14 17:12:21,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106650121] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 17:12:21,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 17:12:21,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-14 17:12:21,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532497049] [2021-12-14 17:12:21,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 17:12:21,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 17:12:21,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 17:12:21,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 17:12:21,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-14 17:12:21,446 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) [2021-12-14 17:12:21,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 17:12:21,992 INFO L93 Difference]: Finished difference Result 2165 states and 2792 transitions. [2021-12-14 17:12:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 17:12:21,993 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 [2021-12-14 17:12:21,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 17:12:21,994 INFO L225 Difference]: With dead ends: 2165 [2021-12-14 17:12:21,994 INFO L226 Difference]: Without dead ends: 0 [2021-12-14 17:12:21,998 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 [2021-12-14 17:12:21,998 INFO L933 BasicCegarLoop]: 357 mSDtfsCounter, 594 mSDsluCounter, 1273 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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 [2021-12-14 17:12:21,998 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] [2021-12-14 17:12:21,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-14 17:12:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-14 17:12:21,999 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) [2021-12-14 17:12:21,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-14 17:12:21,999 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 105 [2021-12-14 17:12:22,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 17:12:22,000 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-14 17:12:22,000 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) [2021-12-14 17:12:22,000 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-14 17:12:22,000 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-14 17:12:22,002 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-14 17:12:22,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 17:12:22,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-12-14 17:12:51,726 WARN L227 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 89 (called from [L 182] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.or)