./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.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 f3090fd14639372da088dcbc149768c93516e312be941c28b3a0b4b80aaee842 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 15:40:04,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 15:40:04,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 15:40:04,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 15:40:04,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 15:40:04,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 15:40:04,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 15:40:04,899 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 15:40:04,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 15:40:04,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 15:40:04,906 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 15:40:04,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 15:40:04,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 15:40:04,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 15:40:04,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 15:40:04,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 15:40:04,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 15:40:04,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 15:40:04,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 15:40:04,924 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 15:40:04,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 15:40:04,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 15:40:04,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 15:40:04,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 15:40:04,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 15:40:04,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 15:40:04,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 15:40:04,937 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 15:40:04,938 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 15:40:04,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 15:40:04,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 15:40:04,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 15:40:04,942 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 15:40:04,943 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 15:40:04,944 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 15:40:04,945 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 15:40:04,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 15:40:04,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 15:40:04,946 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 15:40:04,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 15:40:04,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 15:40:04,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 15:40:04,990 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 15:40:04,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 15:40:04,990 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 15:40:04,991 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 15:40:04,991 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 15:40:04,991 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 15:40:04,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 15:40:04,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 15:40:04,992 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 15:40:04,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 15:40:04,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 15:40:04,993 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 15:40:05,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 15:40:05,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 15:40:05,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 15:40:05,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 15:40:05,003 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 15:40:05,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 15:40:05,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 15:40:05,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 15:40:05,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 15:40:05,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:40:05,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 15:40:05,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 15:40:05,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 15:40:05,005 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 15:40:05,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 15:40:05,006 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 15:40:05,006 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 15:40:05,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 15:40:05,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 15:40:05,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f3090fd14639372da088dcbc149768c93516e312be941c28b3a0b4b80aaee842 [2021-12-21 15:40:05,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 15:40:05,221 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 15:40:05,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 15:40:05,224 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 15:40:05,225 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 15:40:05,226 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-12-21 15:40:05,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55dcdcb13/36bd8aff71c64dafbb850eb5d28f9bd0/FLAG3e88c8d64 [2021-12-21 15:40:05,994 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 15:40:05,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.0/usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-12-21 15:40:06,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55dcdcb13/36bd8aff71c64dafbb850eb5d28f9bd0/FLAG3e88c8d64 [2021-12-21 15:40:06,109 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55dcdcb13/36bd8aff71c64dafbb850eb5d28f9bd0 [2021-12-21 15:40:06,111 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 15:40:06,113 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 15:40:06,116 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 15:40:06,116 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 15:40:06,120 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 15:40:06,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:40:06" (1/1) ... [2021-12-21 15:40:06,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@191a3146 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:06, skipping insertion in model container [2021-12-21 15:40:06,122 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 03:40:06" (1/1) ... [2021-12-21 15:40:06,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 15:40:06,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 15:40:07,225 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-misc-iowarrior.ko.cil.out.i[159323,159336] [2021-12-21 15:40:07,257 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:40:07,301 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 15:40:07,462 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-misc-iowarrior.ko.cil.out.i[159323,159336] [2021-12-21 15:40:07,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 15:40:07,550 INFO L208 MainTranslator]: Completed translation [2021-12-21 15:40:07,552 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:07 WrapperNode [2021-12-21 15:40:07,552 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 15:40:07,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 15:40:07,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 15:40:07,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 15:40:07,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:07" (1/1) ... [2021-12-21 15:40:07,620 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:07" (1/1) ... [2021-12-21 15:40:07,707 INFO L137 Inliner]: procedures = 131, calls = 748, calls flagged for inlining = 45, calls inlined = 42, statements flattened = 2145 [2021-12-21 15:40:07,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 15:40:07,709 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 15:40:07,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 15:40:07,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 15:40:07,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:07" (1/1) ... [2021-12-21 15:40:07,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:07" (1/1) ... [2021-12-21 15:40:07,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:07" (1/1) ... [2021-12-21 15:40:07,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:07" (1/1) ... [2021-12-21 15:40:07,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:07" (1/1) ... [2021-12-21 15:40:07,839 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:07" (1/1) ... [2021-12-21 15:40:07,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:07" (1/1) ... [2021-12-21 15:40:07,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 15:40:07,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 15:40:07,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 15:40:07,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 15:40:07,886 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:07" (1/1) ... [2021-12-21 15:40:07,893 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 15:40:07,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:40:07,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 15:40:07,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 15:40:07,972 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-12-21 15:40:07,973 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-12-21 15:40:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-21 15:40:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-21 15:40:07,973 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-21 15:40:07,973 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2021-12-21 15:40:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2021-12-21 15:40:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-21 15:40:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-21 15:40:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 15:40:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_int [2021-12-21 15:40:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_int [2021-12-21 15:40:07,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-21 15:40:07,974 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-21 15:40:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-21 15:40:07,975 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-21 15:40:07,975 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-21 15:40:08,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-21 15:40:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 15:40:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 15:40:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-21 15:40:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-21 15:40:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2021-12-21 15:40:08,019 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2021-12-21 15:40:08,019 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 15:40:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 15:40:08,020 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_init [2021-12-21 15:40:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_init [2021-12-21 15:40:08,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 15:40:08,020 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-21 15:40:08,020 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-21 15:40:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2021-12-21 15:40:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2021-12-21 15:40:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_assume_stop [2021-12-21 15:40:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_assume_stop [2021-12-21 15:40:08,021 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2021-12-21 15:40:08,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2021-12-21 15:40:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-12-21 15:40:08,022 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-12-21 15:40:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-21 15:40:08,022 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-21 15:40:08,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 15:40:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_exit [2021-12-21 15:40:08,023 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_exit [2021-12-21 15:40:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure iowarrior_delete [2021-12-21 15:40:08,023 INFO L138 BoogieDeclarations]: Found implementation of procedure iowarrior_delete [2021-12-21 15:40:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2021-12-21 15:40:08,024 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2021-12-21 15:40:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 15:40:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure poll_wait [2021-12-21 15:40:08,024 INFO L138 BoogieDeclarations]: Found implementation of procedure poll_wait [2021-12-21 15:40:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-21 15:40:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 15:40:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-21 15:40:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_report [2021-12-21 15:40:08,025 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_report [2021-12-21 15:40:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-12-21 15:40:08,026 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-12-21 15:40:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 15:40:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2021-12-21 15:40:08,028 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2021-12-21 15:40:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-12-21 15:40:08,028 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-12-21 15:40:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-12-21 15:40:08,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-12-21 15:40:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-21 15:40:08,028 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-21 15:40:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2021-12-21 15:40:08,029 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2021-12-21 15:40:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2021-12-21 15:40:08,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2021-12-21 15:40:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 15:40:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 15:40:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2021-12-21 15:40:08,030 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2021-12-21 15:40:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait [2021-12-21 15:40:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait [2021-12-21 15:40:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-21 15:40:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-21 15:40:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-21 15:40:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-21 15:40:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-12-21 15:40:08,032 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-12-21 15:40:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-12-21 15:40:08,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-12-21 15:40:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-21 15:40:08,032 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-21 15:40:08,032 INFO L130 BoogieDeclarations]: Found specification of procedure read_index [2021-12-21 15:40:08,033 INFO L138 BoogieDeclarations]: Found implementation of procedure read_index [2021-12-21 15:40:08,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undefined_pointer [2021-12-21 15:40:08,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undefined_pointer [2021-12-21 15:40:08,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 15:40:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-21 15:40:08,034 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-21 15:40:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-21 15:40:08,035 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-21 15:40:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2021-12-21 15:40:08,035 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2021-12-21 15:40:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-21 15:40:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-12-21 15:40:08,036 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-12-21 15:40:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 15:40:08,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 15:40:08,502 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 15:40:08,507 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 15:40:08,768 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-21 15:40:08,775 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !false; [2021-12-21 15:40:08,775 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume false; [2021-12-21 15:40:08,890 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_assume_stopFINAL: assume true; [2021-12-21 15:40:08,945 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-21 15:40:08,952 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-21 15:40:08,958 WARN L813 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-12-21 15:40:10,095 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##275: assume !false; [2021-12-21 15:40:10,095 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##274: assume false; [2021-12-21 15:40:10,095 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##36: assume !false; [2021-12-21 15:40:10,096 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume false; [2021-12-21 15:40:10,096 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##154: assume !false; [2021-12-21 15:40:10,096 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##153: assume false; [2021-12-21 15:40:10,156 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 15:40:10,178 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 15:40:10,179 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2021-12-21 15:40:10,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:40:10 BoogieIcfgContainer [2021-12-21 15:40:10,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 15:40:10,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 15:40:10,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 15:40:10,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 15:40:10,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 03:40:06" (1/3) ... [2021-12-21 15:40:10,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a58e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:40:10, skipping insertion in model container [2021-12-21 15:40:10,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 03:40:07" (2/3) ... [2021-12-21 15:40:10,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a58e7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 03:40:10, skipping insertion in model container [2021-12-21 15:40:10,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 03:40:10" (3/3) ... [2021-12-21 15:40:10,198 INFO L111 eAbstractionObserver]: Analyzing ICFG usb_urb-drivers-usb-misc-iowarrior.ko.cil.out.i [2021-12-21 15:40:10,203 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 15:40:10,203 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 15:40:10,257 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 15:40:10,263 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 15:40:10,263 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 15:40:10,294 INFO L276 IsEmpty]: Start isEmpty. Operand has 633 states, 448 states have (on average 1.4419642857142858) internal successors, (646), 471 states have internal predecessors, (646), 141 states have call successors, (141), 43 states have call predecessors, (141), 42 states have return successors, (139), 133 states have call predecessors, (139), 139 states have call successors, (139) [2021-12-21 15:40:10,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-21 15:40:10,301 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:10,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:10,302 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:10,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:10,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1746931262, now seen corresponding path program 1 times [2021-12-21 15:40:10,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:10,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830357977] [2021-12-21 15:40:10,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:10,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:10,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:40:10,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:10,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830357977] [2021-12-21 15:40:10,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830357977] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:10,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:10,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 15:40:10,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924737254] [2021-12-21 15:40:10,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:10,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 15:40:10,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:10,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 15:40:10,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:40:10,775 INFO L87 Difference]: Start difference. First operand has 633 states, 448 states have (on average 1.4419642857142858) internal successors, (646), 471 states have internal predecessors, (646), 141 states have call successors, (141), 43 states have call predecessors, (141), 42 states have return successors, (139), 133 states have call predecessors, (139), 139 states have call successors, (139) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 15:40:10,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:10,921 INFO L93 Difference]: Finished difference Result 1859 states and 2764 transitions. [2021-12-21 15:40:10,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 15:40:10,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 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 15 [2021-12-21 15:40:10,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:10,956 INFO L225 Difference]: With dead ends: 1859 [2021-12-21 15:40:10,956 INFO L226 Difference]: Without dead ends: 1227 [2021-12-21 15:40:10,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:40:10,970 INFO L933 BasicCegarLoop]: 1060 mSDtfsCounter, 851 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:10,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 1901 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:40:10,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2021-12-21 15:40:11,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1223. [2021-12-21 15:40:11,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1223 states, 868 states have (on average 1.3191244239631337) internal successors, (1145), 898 states have internal predecessors, (1145), 273 states have call successors, (273), 82 states have call predecessors, (273), 81 states have return successors, (271), 257 states have call predecessors, (271), 269 states have call successors, (271) [2021-12-21 15:40:11,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1223 states to 1223 states and 1689 transitions. [2021-12-21 15:40:11,168 INFO L78 Accepts]: Start accepts. Automaton has 1223 states and 1689 transitions. Word has length 15 [2021-12-21 15:40:11,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:11,168 INFO L470 AbstractCegarLoop]: Abstraction has 1223 states and 1689 transitions. [2021-12-21 15:40:11,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 15:40:11,169 INFO L276 IsEmpty]: Start isEmpty. Operand 1223 states and 1689 transitions. [2021-12-21 15:40:11,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-21 15:40:11,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:11,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:11,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 15:40:11,170 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:11,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:11,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1679402514, now seen corresponding path program 1 times [2021-12-21 15:40:11,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:11,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45171884] [2021-12-21 15:40:11,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:11,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:40:11,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:11,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45171884] [2021-12-21 15:40:11,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45171884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:11,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:11,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 15:40:11,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623466397] [2021-12-21 15:40:11,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:11,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 15:40:11,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:11,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 15:40:11,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:40:11,365 INFO L87 Difference]: Start difference. First operand 1223 states and 1689 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 15:40:11,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:11,474 INFO L93 Difference]: Finished difference Result 3644 states and 5042 transitions. [2021-12-21 15:40:11,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 15:40:11,474 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 16 [2021-12-21 15:40:11,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:11,489 INFO L225 Difference]: With dead ends: 3644 [2021-12-21 15:40:11,490 INFO L226 Difference]: Without dead ends: 2424 [2021-12-21 15:40:11,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 15:40:11,500 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 841 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1824 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:11,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [841 Valid, 1824 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 15:40:11,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2021-12-21 15:40:11,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 2417. [2021-12-21 15:40:11,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2417 states, 1716 states have (on average 1.317016317016317) internal successors, (2260), 1771 states have internal predecessors, (2260), 540 states have call successors, (540), 161 states have call predecessors, (540), 160 states have return successors, (540), 512 states have call predecessors, (540), 536 states have call successors, (540) [2021-12-21 15:40:11,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2417 states to 2417 states and 3340 transitions. [2021-12-21 15:40:11,609 INFO L78 Accepts]: Start accepts. Automaton has 2417 states and 3340 transitions. Word has length 16 [2021-12-21 15:40:11,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:11,610 INFO L470 AbstractCegarLoop]: Abstraction has 2417 states and 3340 transitions. [2021-12-21 15:40:11,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-21 15:40:11,610 INFO L276 IsEmpty]: Start isEmpty. Operand 2417 states and 3340 transitions. [2021-12-21 15:40:11,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-21 15:40:11,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:11,619 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:11,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 15:40:11,619 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:11,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:11,620 INFO L85 PathProgramCache]: Analyzing trace with hash 627657167, now seen corresponding path program 1 times [2021-12-21 15:40:11,620 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:11,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175262698] [2021-12-21 15:40:11,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:11,621 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:11,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:40:11,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-21 15:40:11,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 15:40:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:11,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 15:40:11,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:11,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175262698] [2021-12-21 15:40:11,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175262698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:11,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:11,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 15:40:11,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904019778] [2021-12-21 15:40:11,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:11,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 15:40:11,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:11,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 15:40:11,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:40:11,860 INFO L87 Difference]: Start difference. First operand 2417 states and 3340 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 15:40:12,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:12,895 INFO L93 Difference]: Finished difference Result 5707 states and 8072 transitions. [2021-12-21 15:40:12,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 15:40:12,896 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 54 [2021-12-21 15:40:12,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:12,913 INFO L225 Difference]: With dead ends: 5707 [2021-12-21 15:40:12,913 INFO L226 Difference]: Without dead ends: 3301 [2021-12-21 15:40:12,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 15:40:12,920 INFO L933 BasicCegarLoop]: 905 mSDtfsCounter, 381 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 1999 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:12,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 1999 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 15:40:12,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3301 states. [2021-12-21 15:40:13,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3301 to 3209. [2021-12-21 15:40:13,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3209 states, 2300 states have (on average 1.3282608695652174) internal successors, (3055), 2363 states have internal predecessors, (3055), 748 states have call successors, (748), 161 states have call predecessors, (748), 160 states have return successors, (750), 716 states have call predecessors, (750), 744 states have call successors, (750) [2021-12-21 15:40:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3209 states to 3209 states and 4553 transitions. [2021-12-21 15:40:13,048 INFO L78 Accepts]: Start accepts. Automaton has 3209 states and 4553 transitions. Word has length 54 [2021-12-21 15:40:13,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:13,049 INFO L470 AbstractCegarLoop]: Abstraction has 3209 states and 4553 transitions. [2021-12-21 15:40:13,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 15:40:13,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3209 states and 4553 transitions. [2021-12-21 15:40:13,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-21 15:40:13,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:13,053 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] [2021-12-21 15:40:13,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 15:40:13,054 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:13,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:13,054 INFO L85 PathProgramCache]: Analyzing trace with hash -136231158, now seen corresponding path program 1 times [2021-12-21 15:40:13,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:13,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434395902] [2021-12-21 15:40:13,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:13,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:13,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-21 15:40:13,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-21 15:40:13,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 15:40:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 15:40:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-21 15:40:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-21 15:40:13,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:40:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-21 15:40:13,253 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:13,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434395902] [2021-12-21 15:40:13,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434395902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:13,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:13,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 15:40:13,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147210250] [2021-12-21 15:40:13,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:13,254 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:40:13,254 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:13,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:40:13,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:40:13,255 INFO L87 Difference]: Start difference. First operand 3209 states and 4553 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 15:40:14,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:14,376 INFO L93 Difference]: Finished difference Result 8071 states and 11813 transitions. [2021-12-21 15:40:14,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 15:40:14,376 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2021-12-21 15:40:14,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:14,404 INFO L225 Difference]: With dead ends: 8071 [2021-12-21 15:40:14,404 INFO L226 Difference]: Without dead ends: 4871 [2021-12-21 15:40:14,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 15:40:14,418 INFO L933 BasicCegarLoop]: 925 mSDtfsCounter, 700 mSDsluCounter, 1022 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1947 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:14,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [820 Valid, 1947 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-21 15:40:14,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2021-12-21 15:40:14,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 4779. [2021-12-21 15:40:14,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4779 states, 3462 states have (on average 1.36683997689197) internal successors, (4732), 3569 states have internal predecessors, (4732), 1156 states have call successors, (1156), 161 states have call predecessors, (1156), 160 states have return successors, (1160), 1104 states have call predecessors, (1160), 1152 states have call successors, (1160) [2021-12-21 15:40:14,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4779 states to 4779 states and 7048 transitions. [2021-12-21 15:40:14,641 INFO L78 Accepts]: Start accepts. Automaton has 4779 states and 7048 transitions. Word has length 82 [2021-12-21 15:40:14,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:14,641 INFO L470 AbstractCegarLoop]: Abstraction has 4779 states and 7048 transitions. [2021-12-21 15:40:14,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-21 15:40:14,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4779 states and 7048 transitions. [2021-12-21 15:40:14,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-21 15:40:14,646 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:14,646 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:14,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 15:40:14,647 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:14,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:14,647 INFO L85 PathProgramCache]: Analyzing trace with hash 948538537, now seen corresponding path program 1 times [2021-12-21 15:40:14,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:14,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474076172] [2021-12-21 15:40:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:14,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:14,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:40:14,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 15:40:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 15:40:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 15:40:14,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:40:14,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:40:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:14,814 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-21 15:40:14,815 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:14,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474076172] [2021-12-21 15:40:14,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474076172] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:14,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:14,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:40:14,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811266304] [2021-12-21 15:40:14,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:14,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:40:14,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:14,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:40:14,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:40:14,817 INFO L87 Difference]: Start difference. First operand 4779 states and 7048 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 15:40:16,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:16,782 INFO L93 Difference]: Finished difference Result 13013 states and 19322 transitions. [2021-12-21 15:40:16,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:40:16,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2021-12-21 15:40:16,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:16,838 INFO L225 Difference]: With dead ends: 13013 [2021-12-21 15:40:16,838 INFO L226 Difference]: Without dead ends: 8245 [2021-12-21 15:40:16,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:40:16,861 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 1001 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 803 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 2645 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 803 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:16,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 2645 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 803 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-12-21 15:40:16,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8245 states. [2021-12-21 15:40:17,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8245 to 7955. [2021-12-21 15:40:17,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7955 states, 5782 states have (on average 1.3778969214804566) internal successors, (7967), 5977 states have internal predecessors, (7967), 1896 states have call successors, (1896), 277 states have call predecessors, (1896), 276 states have return successors, (1920), 1772 states have call predecessors, (1920), 1892 states have call successors, (1920) [2021-12-21 15:40:17,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7955 states to 7955 states and 11783 transitions. [2021-12-21 15:40:17,241 INFO L78 Accepts]: Start accepts. Automaton has 7955 states and 11783 transitions. Word has length 88 [2021-12-21 15:40:17,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:17,242 INFO L470 AbstractCegarLoop]: Abstraction has 7955 states and 11783 transitions. [2021-12-21 15:40:17,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-21 15:40:17,243 INFO L276 IsEmpty]: Start isEmpty. Operand 7955 states and 11783 transitions. [2021-12-21 15:40:17,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-21 15:40:17,247 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:17,248 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:17,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 15:40:17,248 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:17,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:17,249 INFO L85 PathProgramCache]: Analyzing trace with hash 455912363, now seen corresponding path program 1 times [2021-12-21 15:40:17,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:17,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471994459] [2021-12-21 15:40:17,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:17,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:17,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:17,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:17,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:40:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 15:40:17,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-21 15:40:17,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-21 15:40:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:40:17,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 15:40:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-21 15:40:17,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:17,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471994459] [2021-12-21 15:40:17,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471994459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:17,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:17,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 15:40:17,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530162133] [2021-12-21 15:40:17,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:17,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 15:40:17,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:17,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 15:40:17,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-21 15:40:17,502 INFO L87 Difference]: Start difference. First operand 7955 states and 11783 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 15:40:18,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:18,592 INFO L93 Difference]: Finished difference Result 16157 states and 24013 transitions. [2021-12-21 15:40:18,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 15:40:18,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 88 [2021-12-21 15:40:18,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:18,726 INFO L225 Difference]: With dead ends: 16157 [2021-12-21 15:40:18,728 INFO L226 Difference]: Without dead ends: 8175 [2021-12-21 15:40:18,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-21 15:40:18,753 INFO L933 BasicCegarLoop]: 849 mSDtfsCounter, 341 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:18,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 2674 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 15:40:18,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8175 states. [2021-12-21 15:40:19,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8175 to 7917. [2021-12-21 15:40:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7917 states, 5768 states have (on average 1.3774271844660195) internal successors, (7945), 5969 states have internal predecessors, (7945), 1869 states have call successors, (1869), 280 states have call predecessors, (1869), 279 states have return successors, (1893), 1739 states have call predecessors, (1893), 1865 states have call successors, (1893) [2021-12-21 15:40:19,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7917 states to 7917 states and 11707 transitions. [2021-12-21 15:40:19,059 INFO L78 Accepts]: Start accepts. Automaton has 7917 states and 11707 transitions. Word has length 88 [2021-12-21 15:40:19,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:19,059 INFO L470 AbstractCegarLoop]: Abstraction has 7917 states and 11707 transitions. [2021-12-21 15:40:19,060 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 4 states have internal predecessors, (65), 3 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-21 15:40:19,060 INFO L276 IsEmpty]: Start isEmpty. Operand 7917 states and 11707 transitions. [2021-12-21 15:40:19,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-21 15:40:19,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:19,068 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:19,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 15:40:19,068 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:19,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:19,069 INFO L85 PathProgramCache]: Analyzing trace with hash 973286060, now seen corresponding path program 1 times [2021-12-21 15:40:19,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:19,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143976317] [2021-12-21 15:40:19,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:19,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:19,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:40:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:40:19,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-21 15:40:19,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 15:40:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:19,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 15:40:19,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-21 15:40:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 15:40:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 15:40:19,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 15:40:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-21 15:40:19,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:19,363 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-12-21 15:40:19,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:19,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143976317] [2021-12-21 15:40:19,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143976317] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:19,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:19,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 15:40:19,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089051853] [2021-12-21 15:40:19,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:19,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 15:40:19,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:19,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 15:40:19,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 15:40:19,366 INFO L87 Difference]: Start difference. First operand 7917 states and 11707 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-21 15:40:20,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:20,632 INFO L93 Difference]: Finished difference Result 14741 states and 21681 transitions. [2021-12-21 15:40:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 15:40:20,633 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 124 [2021-12-21 15:40:20,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:20,663 INFO L225 Difference]: With dead ends: 14741 [2021-12-21 15:40:20,664 INFO L226 Difference]: Without dead ends: 6815 [2021-12-21 15:40:20,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:40:20,693 INFO L933 BasicCegarLoop]: 840 mSDtfsCounter, 258 mSDsluCounter, 2842 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 3682 SdHoareTripleChecker+Invalid, 948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:20,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 3682 Invalid, 948 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-21 15:40:20,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6815 states. [2021-12-21 15:40:20,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6815 to 6570. [2021-12-21 15:40:20,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6570 states, 4775 states have (on average 1.3608376963350786) internal successors, (6498), 4929 states have internal predecessors, (6498), 1516 states have call successors, (1516), 279 states have call predecessors, (1516), 278 states have return successors, (1529), 1417 states have call predecessors, (1529), 1511 states have call successors, (1529) [2021-12-21 15:40:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6570 states to 6570 states and 9543 transitions. [2021-12-21 15:40:20,997 INFO L78 Accepts]: Start accepts. Automaton has 6570 states and 9543 transitions. Word has length 124 [2021-12-21 15:40:20,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:20,999 INFO L470 AbstractCegarLoop]: Abstraction has 6570 states and 9543 transitions. [2021-12-21 15:40:20,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 5 states have internal predecessors, (86), 4 states have call successors, (17), 4 states have call predecessors, (17), 1 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-21 15:40:21,000 INFO L276 IsEmpty]: Start isEmpty. Operand 6570 states and 9543 transitions. [2021-12-21 15:40:21,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-21 15:40:21,003 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:21,003 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:21,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 15:40:21,004 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:21,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:21,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1605305614, now seen corresponding path program 1 times [2021-12-21 15:40:21,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:21,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971510032] [2021-12-21 15:40:21,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:21,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:21,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:40:21,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:40:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 15:40:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 15:40:21,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 15:40:21,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:40:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:40:21,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 15:40:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:40:21,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:21,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 15:40:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-21 15:40:21,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:21,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971510032] [2021-12-21 15:40:21,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971510032] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:40:21,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462108248] [2021-12-21 15:40:21,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:21,573 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:40:21,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:40:21,575 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:40:21,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 15:40:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:22,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 1980 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-21 15:40:22,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:40:22,761 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-21 15:40:22,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 15:40:22,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-21 15:40:22,937 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 15:40:22,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-21 15:40:23,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-21 15:40:23,106 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 15:40:23,161 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-21 15:40:23,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 15:40:23,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 15:40:23,319 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 15:40:23,426 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2021-12-21 15:40:23,462 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-21 15:40:23,505 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 2 refuted. 4 times theorem prover too weak. 17 trivial. 0 not checked. [2021-12-21 15:40:23,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:40:23,577 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1727 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_iowarrior_probe_~dev~8#1.base| v_ArrVal_1727) |c_~#debug~0.base|) |c_~#debug~0.offset|) 0)) is different from false [2021-12-21 15:40:23,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462108248] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:40:23,590 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-21 15:40:23,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-12-21 15:40:23,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992133801] [2021-12-21 15:40:23,590 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-21 15:40:23,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-21 15:40:23,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:23,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-21 15:40:23,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=662, Unknown=22, NotChecked=52, Total=812 [2021-12-21 15:40:23,592 INFO L87 Difference]: Start difference. First operand 6570 states and 9543 transitions. Second operand has 27 states, 27 states have (on average 5.925925925925926) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (34), 8 states have call predecessors, (34), 11 states have return successors, (30), 10 states have call predecessors, (30), 5 states have call successors, (30) [2021-12-21 15:40:31,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:31,622 INFO L93 Difference]: Finished difference Result 13575 states and 19795 transitions. [2021-12-21 15:40:31,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-21 15:40:31,622 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.925925925925926) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (34), 8 states have call predecessors, (34), 11 states have return successors, (30), 10 states have call predecessors, (30), 5 states have call successors, (30) Word has length 125 [2021-12-21 15:40:31,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:31,653 INFO L225 Difference]: With dead ends: 13575 [2021-12-21 15:40:31,654 INFO L226 Difference]: Without dead ends: 7008 [2021-12-21 15:40:31,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 164 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=321, Invalid=2079, Unknown=54, NotChecked=96, Total=2550 [2021-12-21 15:40:31,674 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 1280 mSDsluCounter, 9925 mSDsCounter, 0 mSdLazyCounter, 7799 mSolverCounterSat, 914 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1351 SdHoareTripleChecker+Valid, 10760 SdHoareTripleChecker+Invalid, 9744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 914 IncrementalHoareTripleChecker+Valid, 7799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1031 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:31,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1351 Valid, 10760 Invalid, 9744 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [914 Valid, 7799 Invalid, 0 Unknown, 1031 Unchecked, 6.9s Time] [2021-12-21 15:40:31,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7008 states. [2021-12-21 15:40:31,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7008 to 6756. [2021-12-21 15:40:31,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6756 states, 4909 states have (on average 1.353025056019556) internal successors, (6642), 5076 states have internal predecessors, (6642), 1528 states have call successors, (1528), 283 states have call predecessors, (1528), 318 states have return successors, (1701), 1452 states have call predecessors, (1701), 1523 states have call successors, (1701) [2021-12-21 15:40:32,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6756 states to 6756 states and 9871 transitions. [2021-12-21 15:40:32,024 INFO L78 Accepts]: Start accepts. Automaton has 6756 states and 9871 transitions. Word has length 125 [2021-12-21 15:40:32,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:32,024 INFO L470 AbstractCegarLoop]: Abstraction has 6756 states and 9871 transitions. [2021-12-21 15:40:32,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.925925925925926) internal successors, (160), 16 states have internal predecessors, (160), 5 states have call successors, (34), 8 states have call predecessors, (34), 11 states have return successors, (30), 10 states have call predecessors, (30), 5 states have call successors, (30) [2021-12-21 15:40:32,025 INFO L276 IsEmpty]: Start isEmpty. Operand 6756 states and 9871 transitions. [2021-12-21 15:40:32,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-21 15:40:32,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:32,028 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:32,062 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 15:40:32,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:40:32,256 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:32,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:32,256 INFO L85 PathProgramCache]: Analyzing trace with hash -666773999, now seen corresponding path program 1 times [2021-12-21 15:40:32,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:32,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823430565] [2021-12-21 15:40:32,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:32,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:32,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:40:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:40:32,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:32,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 15:40:32,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 15:40:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 15:40:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:40:32,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:40:32,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 15:40:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:40:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:32,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 15:40:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:32,871 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 15:40:32,871 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:32,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823430565] [2021-12-21 15:40:32,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823430565] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:40:32,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1425654240] [2021-12-21 15:40:32,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:32,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:40:32,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:40:32,873 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:40:32,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 15:40:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:33,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1989 conjuncts, 57 conjunts are in the unsatisfiable core [2021-12-21 15:40:33,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:40:33,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:40:33,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-21 15:40:33,934 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-21 15:40:33,938 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-21 15:40:34,036 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-21 15:40:34,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:40:34,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1425654240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:34,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:40:34,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [18] total 27 [2021-12-21 15:40:34,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450769293] [2021-12-21 15:40:34,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:34,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:40:34,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:34,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:40:34,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=641, Unknown=0, NotChecked=0, Total=702 [2021-12-21 15:40:34,038 INFO L87 Difference]: Start difference. First operand 6756 states and 9871 transitions. Second operand has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 15:40:34,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:34,959 INFO L93 Difference]: Finished difference Result 6965 states and 10133 transitions. [2021-12-21 15:40:34,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-21 15:40:34,961 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 125 [2021-12-21 15:40:34,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:34,990 INFO L225 Difference]: With dead ends: 6965 [2021-12-21 15:40:34,990 INFO L226 Difference]: Without dead ends: 6804 [2021-12-21 15:40:34,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 146 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2021-12-21 15:40:34,998 INFO L933 BasicCegarLoop]: 855 mSDtfsCounter, 16 mSDsluCounter, 7412 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 8267 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 68 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:34,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 8267 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 293 Invalid, 0 Unknown, 68 Unchecked, 0.7s Time] [2021-12-21 15:40:35,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6804 states. [2021-12-21 15:40:35,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6804 to 6756. [2021-12-21 15:40:35,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6756 states, 4909 states have (on average 1.3505805663067834) internal successors, (6630), 5076 states have internal predecessors, (6630), 1532 states have call successors, (1532), 283 states have call predecessors, (1532), 314 states have return successors, (1699), 1452 states have call predecessors, (1699), 1527 states have call successors, (1699) [2021-12-21 15:40:35,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6756 states to 6756 states and 9861 transitions. [2021-12-21 15:40:35,301 INFO L78 Accepts]: Start accepts. Automaton has 6756 states and 9861 transitions. Word has length 125 [2021-12-21 15:40:35,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:35,302 INFO L470 AbstractCegarLoop]: Abstraction has 6756 states and 9861 transitions. [2021-12-21 15:40:35,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 8.2) internal successors, (82), 8 states have internal predecessors, (82), 5 states have call successors, (18), 5 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 15:40:35,302 INFO L276 IsEmpty]: Start isEmpty. Operand 6756 states and 9861 transitions. [2021-12-21 15:40:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-21 15:40:35,305 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:35,306 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:35,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 15:40:35,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-21 15:40:35,531 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:35,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:35,533 INFO L85 PathProgramCache]: Analyzing trace with hash -733780752, now seen corresponding path program 1 times [2021-12-21 15:40:35,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:35,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475745149] [2021-12-21 15:40:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:35,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:35,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:40:35,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:40:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:35,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:35,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 15:40:35,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 15:40:35,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 15:40:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:40:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:40:35,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 15:40:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:40:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:35,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 15:40:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:35,858 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-21 15:40:35,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:35,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475745149] [2021-12-21 15:40:35,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475745149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:35,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:35,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 15:40:35,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522070188] [2021-12-21 15:40:35,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:35,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:40:35,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:35,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:40:35,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:40:35,861 INFO L87 Difference]: Start difference. First operand 6756 states and 9861 transitions. Second operand has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-21 15:40:38,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:38,260 INFO L93 Difference]: Finished difference Result 10278 states and 15072 transitions. [2021-12-21 15:40:38,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-21 15:40:38,261 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2021-12-21 15:40:38,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:38,290 INFO L225 Difference]: With dead ends: 10278 [2021-12-21 15:40:38,290 INFO L226 Difference]: Without dead ends: 6868 [2021-12-21 15:40:38,303 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2021-12-21 15:40:38,304 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 329 mSDsluCounter, 4900 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 5717 SdHoareTripleChecker+Invalid, 1981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:38,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 5717 Invalid, 1981 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-21 15:40:38,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2021-12-21 15:40:38,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 6796. [2021-12-21 15:40:38,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6796 states, 4941 states have (on average 1.3483100586925723) internal successors, (6662), 5100 states have internal predecessors, (6662), 1532 states have call successors, (1532), 283 states have call predecessors, (1532), 322 states have return successors, (1719), 1468 states have call predecessors, (1719), 1527 states have call successors, (1719) [2021-12-21 15:40:38,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6796 states to 6796 states and 9913 transitions. [2021-12-21 15:40:38,628 INFO L78 Accepts]: Start accepts. Automaton has 6796 states and 9913 transitions. Word has length 125 [2021-12-21 15:40:38,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:38,629 INFO L470 AbstractCegarLoop]: Abstraction has 6796 states and 9913 transitions. [2021-12-21 15:40:38,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.545454545454546) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-21 15:40:38,629 INFO L276 IsEmpty]: Start isEmpty. Operand 6796 states and 9913 transitions. [2021-12-21 15:40:38,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-21 15:40:38,633 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:38,633 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:38,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 15:40:38,634 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:38,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:38,634 INFO L85 PathProgramCache]: Analyzing trace with hash -382980815, now seen corresponding path program 1 times [2021-12-21 15:40:38,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:38,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632703016] [2021-12-21 15:40:38,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:38,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:38,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:40:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:40:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 15:40:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 15:40:38,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 15:40:38,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:40:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:40:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 15:40:38,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:40:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:38,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:38,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 15:40:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-21 15:40:39,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:39,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632703016] [2021-12-21 15:40:39,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632703016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:39,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:39,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-21 15:40:39,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729427409] [2021-12-21 15:40:39,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:39,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-21 15:40:39,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:39,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-21 15:40:39,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:40:39,005 INFO L87 Difference]: Start difference. First operand 6796 states and 9913 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-21 15:40:41,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:41,656 INFO L93 Difference]: Finished difference Result 13637 states and 19949 transitions. [2021-12-21 15:40:41,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-21 15:40:41,657 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 125 [2021-12-21 15:40:41,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:41,690 INFO L225 Difference]: With dead ends: 13637 [2021-12-21 15:40:41,691 INFO L226 Difference]: Without dead ends: 6852 [2021-12-21 15:40:41,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2021-12-21 15:40:41,709 INFO L933 BasicCegarLoop]: 823 mSDtfsCounter, 328 mSDsluCounter, 6920 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 7743 SdHoareTripleChecker+Invalid, 2627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:41,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [332 Valid, 7743 Invalid, 2627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-21 15:40:41,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2021-12-21 15:40:41,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6788. [2021-12-21 15:40:41,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6788 states, 4933 states have (on average 1.3464423271842691) internal successors, (6642), 5096 states have internal predecessors, (6642), 1532 states have call successors, (1532), 283 states have call predecessors, (1532), 322 states have return successors, (1719), 1464 states have call predecessors, (1719), 1527 states have call successors, (1719) [2021-12-21 15:40:41,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6788 states to 6788 states and 9893 transitions. [2021-12-21 15:40:41,948 INFO L78 Accepts]: Start accepts. Automaton has 6788 states and 9893 transitions. Word has length 125 [2021-12-21 15:40:41,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:41,948 INFO L470 AbstractCegarLoop]: Abstraction has 6788 states and 9893 transitions. [2021-12-21 15:40:41,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 7 states have internal predecessors, (83), 3 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2021-12-21 15:40:41,949 INFO L276 IsEmpty]: Start isEmpty. Operand 6788 states and 9893 transitions. [2021-12-21 15:40:41,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-21 15:40:41,952 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:41,953 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:41,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 15:40:41,953 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:41,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:41,954 INFO L85 PathProgramCache]: Analyzing trace with hash -935119689, now seen corresponding path program 1 times [2021-12-21 15:40:41,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:41,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756452002] [2021-12-21 15:40:41,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:41,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:42,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:40:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 15:40:42,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:40:42,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:42,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:40:42,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:40:42,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 15:40:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-21 15:40:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:40:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-21 15:40:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-21 15:40:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 15:40:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,251 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 15:40:42,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:42,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756452002] [2021-12-21 15:40:42,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756452002] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:40:42,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870497880] [2021-12-21 15:40:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:42,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:40:42,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:40:42,254 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:40:42,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 15:40:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:42,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 1779 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 15:40:42,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:40:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 15:40:43,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 15:40:43,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870497880] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:43,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 15:40:43,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-21 15:40:43,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788842481] [2021-12-21 15:40:43,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:43,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 15:40:43,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:43,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 15:40:43,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:40:43,066 INFO L87 Difference]: Start difference. First operand 6788 states and 9893 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-21 15:40:43,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:43,326 INFO L93 Difference]: Finished difference Result 13699 states and 19950 transitions. [2021-12-21 15:40:43,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 15:40:43,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 119 [2021-12-21 15:40:43,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:43,354 INFO L225 Difference]: With dead ends: 13699 [2021-12-21 15:40:43,355 INFO L226 Difference]: Without dead ends: 6898 [2021-12-21 15:40:43,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-21 15:40:43,373 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 25 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:43,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 3436 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 15:40:43,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6898 states. [2021-12-21 15:40:43,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6898 to 6803. [2021-12-21 15:40:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6803 states, 4936 states have (on average 1.3456239870340356) internal successors, (6642), 5102 states have internal predecessors, (6642), 1544 states have call successors, (1544), 283 states have call predecessors, (1544), 322 states have return successors, (1731), 1473 states have call predecessors, (1731), 1539 states have call successors, (1731) [2021-12-21 15:40:43,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6803 states to 6803 states and 9917 transitions. [2021-12-21 15:40:43,598 INFO L78 Accepts]: Start accepts. Automaton has 6803 states and 9917 transitions. Word has length 119 [2021-12-21 15:40:43,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:43,599 INFO L470 AbstractCegarLoop]: Abstraction has 6803 states and 9917 transitions. [2021-12-21 15:40:43,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-21 15:40:43,599 INFO L276 IsEmpty]: Start isEmpty. Operand 6803 states and 9917 transitions. [2021-12-21 15:40:43,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-12-21 15:40:43,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:43,603 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:43,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 15:40:43,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:40:43,828 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:43,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:43,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1967238524, now seen corresponding path program 1 times [2021-12-21 15:40:43,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:43,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622939836] [2021-12-21 15:40:43,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:43,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:43,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:43,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-21 15:40:43,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:43,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-21 15:40:43,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:43,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-21 15:40:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:43,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-21 15:40:43,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:43,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-21 15:40:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:43,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-12-21 15:40:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:43,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-21 15:40:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:44,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 15:40:44,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:44,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-21 15:40:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:44,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-21 15:40:44,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:44,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-21 15:40:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:44,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 15:40:44,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:44,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-21 15:40:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:44,031 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-12-21 15:40:44,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:44,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622939836] [2021-12-21 15:40:44,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622939836] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 15:40:44,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051073325] [2021-12-21 15:40:44,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:44,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:40:44,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 15:40:44,033 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 15:40:44,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 15:40:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:44,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 1835 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 15:40:44,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 15:40:44,866 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 5 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-21 15:40:44,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-21 15:40:45,125 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-21 15:40:45,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051073325] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-21 15:40:45,125 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-21 15:40:45,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 11 [2021-12-21 15:40:45,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16567949] [2021-12-21 15:40:45,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-21 15:40:45,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 15:40:45,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:45,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 15:40:45,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-21 15:40:45,129 INFO L87 Difference]: Start difference. First operand 6803 states and 9917 transitions. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 8 states have internal predecessors, (150), 4 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) [2021-12-21 15:40:47,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:47,430 INFO L93 Difference]: Finished difference Result 18490 states and 27594 transitions. [2021-12-21 15:40:47,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 15:40:47,430 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 8 states have internal predecessors, (150), 4 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) Word has length 125 [2021-12-21 15:40:47,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:47,480 INFO L225 Difference]: With dead ends: 18490 [2021-12-21 15:40:47,481 INFO L226 Difference]: Without dead ends: 11689 [2021-12-21 15:40:47,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 274 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-12-21 15:40:47,507 INFO L933 BasicCegarLoop]: 1014 mSDtfsCounter, 1412 mSDsluCounter, 5467 mSDsCounter, 0 mSdLazyCounter, 1756 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 6481 SdHoareTripleChecker+Invalid, 2233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 1756 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:47,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1633 Valid, 6481 Invalid, 2233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 1756 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-21 15:40:47,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11689 states. [2021-12-21 15:40:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11689 to 11495. [2021-12-21 15:40:47,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11495 states, 8542 states have (on average 1.3728634980098338) internal successors, (11727), 8732 states have internal predecessors, (11727), 2630 states have call successors, (2630), 283 states have call predecessors, (2630), 322 states have return successors, (2970), 2535 states have call predecessors, (2970), 2625 states have call successors, (2970) [2021-12-21 15:40:47,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11495 states to 11495 states and 17327 transitions. [2021-12-21 15:40:47,937 INFO L78 Accepts]: Start accepts. Automaton has 11495 states and 17327 transitions. Word has length 125 [2021-12-21 15:40:47,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:47,937 INFO L470 AbstractCegarLoop]: Abstraction has 11495 states and 17327 transitions. [2021-12-21 15:40:47,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 8 states have internal predecessors, (150), 4 states have call successors, (43), 4 states have call predecessors, (43), 3 states have return successors, (38), 5 states have call predecessors, (38), 4 states have call successors, (38) [2021-12-21 15:40:47,938 INFO L276 IsEmpty]: Start isEmpty. Operand 11495 states and 17327 transitions. [2021-12-21 15:40:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-21 15:40:47,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:47,943 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:47,974 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-21 15:40:48,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 15:40:48,162 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:48,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:48,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1936255599, now seen corresponding path program 1 times [2021-12-21 15:40:48,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:48,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555660848] [2021-12-21 15:40:48,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:48,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:48,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:48,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:40:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:40:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 15:40:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 15:40:48,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 15:40:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:40:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:40:48,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 15:40:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:40:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 15:40:48,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:48,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-21 15:40:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:48,535 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-12-21 15:40:48,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:48,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555660848] [2021-12-21 15:40:48,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555660848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:48,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:48,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-21 15:40:48,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115710140] [2021-12-21 15:40:48,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:48,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 15:40:48,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:48,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 15:40:48,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-21 15:40:48,538 INFO L87 Difference]: Start difference. First operand 11495 states and 17327 transitions. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 6 states have internal predecessors, (84), 6 states have call successors, (19), 7 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-21 15:40:52,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 15:40:52,910 INFO L93 Difference]: Finished difference Result 17414 states and 26455 transitions. [2021-12-21 15:40:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-21 15:40:52,910 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 6 states have internal predecessors, (84), 6 states have call successors, (19), 7 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) Word has length 138 [2021-12-21 15:40:52,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 15:40:52,968 INFO L225 Difference]: With dead ends: 17414 [2021-12-21 15:40:52,968 INFO L226 Difference]: Without dead ends: 17409 [2021-12-21 15:40:52,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-12-21 15:40:52,978 INFO L933 BasicCegarLoop]: 1546 mSDtfsCounter, 3220 mSDsluCounter, 3203 mSDsCounter, 0 mSdLazyCounter, 3053 mSolverCounterSat, 1662 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3450 SdHoareTripleChecker+Valid, 4749 SdHoareTripleChecker+Invalid, 4715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1662 IncrementalHoareTripleChecker+Valid, 3053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-21 15:40:52,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3450 Valid, 4749 Invalid, 4715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1662 Valid, 3053 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-21 15:40:52,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17409 states. [2021-12-21 15:40:53,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17409 to 17261. [2021-12-21 15:40:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17261 states, 12818 states have (on average 1.3746294273677642) internal successors, (17620), 13108 states have internal predecessors, (17620), 3956 states have call successors, (3956), 419 states have call predecessors, (3956), 486 states have return successors, (4562), 3817 states have call predecessors, (4562), 3951 states have call successors, (4562) [2021-12-21 15:40:53,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17261 states to 17261 states and 26138 transitions. [2021-12-21 15:40:53,667 INFO L78 Accepts]: Start accepts. Automaton has 17261 states and 26138 transitions. Word has length 138 [2021-12-21 15:40:53,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 15:40:53,667 INFO L470 AbstractCegarLoop]: Abstraction has 17261 states and 26138 transitions. [2021-12-21 15:40:53,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 6 states have internal predecessors, (84), 6 states have call successors, (19), 7 states have call predecessors, (19), 2 states have return successors, (16), 4 states have call predecessors, (16), 5 states have call successors, (16) [2021-12-21 15:40:53,667 INFO L276 IsEmpty]: Start isEmpty. Operand 17261 states and 26138 transitions. [2021-12-21 15:40:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-21 15:40:53,674 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 15:40:53,674 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 15:40:53,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 15:40:53,675 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 15:40:53,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 15:40:53,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2115047114, now seen corresponding path program 1 times [2021-12-21 15:40:53,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 15:40:53,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873547199] [2021-12-21 15:40:53,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 15:40:53,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 15:40:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-21 15:40:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 15:40:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-21 15:40:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-21 15:40:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 15:40:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-21 15:40:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-21 15:40:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 15:40:53,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-21 15:40:53,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 15:40:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 15:40:53,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-21 15:40:53,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-21 15:40:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-21 15:40:53,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 15:40:53,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-21 15:40:53,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 15:40:53,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:53,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-21 15:40:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 15:40:54,002 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-12-21 15:40:54,003 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 15:40:54,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873547199] [2021-12-21 15:40:54,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873547199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 15:40:54,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 15:40:54,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 15:40:54,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217789969] [2021-12-21 15:40:54,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 15:40:54,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 15:40:54,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 15:40:54,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 15:40:54,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-21 15:40:54,005 INFO L87 Difference]: Start difference. First operand 17261 states and 26138 transitions. Second operand has 9 states, 9 states have (on average 10.444444444444445) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (22), 6 states have call predecessors, (22), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19)